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Method and apparatus for gasification of organic waste in batches

Tue, 22 Sep 2015 08:00:00 EDT

A gasification reactor for processing organic waste in batches comprises a primary gasification reactor (62) that includes a primary gasification chamber (18) and a surrounding combustion chamber (19), a secondary gasification chamber (21), a synthesis gas decontamination unit (42) and a combustible gas selector (41). The waste is loaded into the primary gasification chamber through a latched opening and heated from the combustion of a fuel in the combustion chamber (19) to convert the waste to a synthesis gas. The gasification chamber (18) has an intake (20) for introducing pre-heated process air (1) therein. The combustion chamber operates either with a conventional fuel (9) or with the produced synthesis gas (6). The secondary gasification chamber (21) thermally treats the synthesis gas (2) to eliminate tars. The decontamination unit (42) scrubs the synthesis gas of contaminants including particulates and acid gases. The clean synthesis gas (6) is directed to the combustible gas selector (41) which selectively feeds either the combustible fluid (9) or the synthesis gas (6) to the burner (40).



Powdered fuel conversion systems and methods

Tue, 26 May 2015 08:00:00 EDT

The burner preferably exclusively burns substantially explosible solid fuels and preferably has instant ON-OFF thermostat control, wastes no energy preheating the enclosure or external air supply, achieves stable combustion the moment the powder-air mix is ignited in our burner, is used in the upward vertical mode except for oil burner retrofits, burns a solid fuel in a single-phase regime as if it were a vaporized liquid or gas, is designed to complete combustion within the burner housing itself rather than in a large, high temperature furnace enclosure which it feeds, has an ultra-short residence time requirement, is a recycle consuming burner with self-contained management of initially unburned particles, is much smaller, simpler and lower cost, has a wider dynamic range/turndown ratio, is more efficient in combustion completeness and thermal efficiency, and operates with air-fuel mix approximately at the flame speed.



Waste disposal plant with modular frame and guide assembly

Tue, 26 May 2015 08:00:00 EDT

A waste disposal plant includes a combustion chamber (2) inside which waste laid on a combustion grate (3) is burnt. The grate permits the entrance of an adequate quantity of combustion air in the chamber through it. The combustion grate includes at least a handling group formed by fire bars or plates (7), which move alternatively one with respect to the other by advancing the waste on the grate. A handling group allows the alternate movement of the fire bars (7) which are divided in movable fire bars (7a) and fixed fire bars (7b), alternately disposed one with respect to the other, on transversal rows resting one upon the other according to a longitudinal placement with alternate steps.



Grate bar for an incinerator and method for producing such a grate bar

Tue, 26 May 2015 08:00:00 EDT

A grate bar for an incinerator having a grate bar base body and a high temperature resistant cover plate covering the grate bar base body at least on a surface portion which in operation points to a combustion chamber. The cover plate is separated from the grate bar base body by a thermal insulating material. In the grate bar base body a cavity is inserted in a side pointing to the cover plate and/or in the cover plate in the side pointing to the grate bar base body, which cavity is at least partially filled with a ceramic fiber insulating material. The invention further relates to a method for producing such a grate bar.



Heating furnace and heating method employed by heating furnace

Tue, 19 May 2015 08:00:00 EDT

A hydrogen vacuum furnace (100) is provided with a process chamber (1) wherein a subject (10) to be heated is stored; a heating chamber (2) wherein a heater lamp (25) is stored; and a crystal board (3) for separating the subject (10) and the heater lamp (25) one from the other. In the hydrogen vacuum furnace (100), the subject (10) is heated by a radiant ray applied from the heater lamp (25). The process chamber (1) and the heating chamber (2) are provided with gas feed ports (11, 21) and exhaust ports (12, 22), respectively, for feeding and exhausting a gas. When the subject (10) is being heated, atmospheric pressure in each chamber is adjusted so that the heating chamber (2) is under positive pressure to the process chamber (1) by feeding or exhausting the gas.



Burner for unprocessed waste oils

Tue, 19 May 2015 08:00:00 EDT

A system and techniques for waste oil combustion are provided. The techniques include straining waste oil, separating contaminants from the strained waste oil to produce segregated layers of waste oil, selectively drawing a segregated layer of the waste oil, entraining the drawn waste oil to a burner for combustion, and regulating flow rate to produce a controllable amount of heat output. The system includes a container for straining waste oil, a storage drum for separating contaminants from the strained waste oil via gravity separation to produce segregated waste oil, an oil uptake channel for entraining the waste oil from the storage drum, a fuel regulator for controlling rate of flow of the waste oil from the storage drum to a burner head via the oil uptake channel, and a burner head control for repositioning a burner head under the input stream to produce a controllable amount of heat output.



Method for starting a burner

Tue, 19 May 2015 08:00:00 EDT

A method for starting a burner for combusting synthesis gases is provided. The burner includes first and second fuel passages, the first fuel passage encompasses the second fuel passage in a substantially concentric manner and the gas transferred to the burner is mixed with combusting air and is combusted. In order to start the burner, the second fuel passage is first loaded with a synthesis gas to a predefined burner power at a first starting phase and the first fuel passage is loaded with the synthesis gas at a second starting phase.



Burner system for consumption of waste fuel

Tue, 05 May 2015 08:00:00 EDT

A burner system for consumption of waste fuel comprises a screw conveyor having a longitudinal hollow interior for air distribution and radially disposed air intake orifices connecting the hollow interior to a plurality of combustion chambers, which includes a first combustion chamber disposed centrally around the screw conveyor and at least one orifice; a second combustion chamber disposed concentrically around the first combustion chamber, receiving burning waste fuel from the first combustion chamber, and in fluid communication with the air intake orifice to provide air from an air blower through the orifice; and a third combustion chamber disposed concentrically around the second combustion chamber, receiving waste fuel from the second combustion chamber, and in fluid communication with the air intake orifice to provide air from the air blower.



System and method for dense phase sorbent injection

Tue, 28 Apr 2015 08:00:00 EDT

The present disclosure is directed to a dense-phase additive transportation system for additive injection into a contaminated gas stream.



Oxygen enrichment of premix air-gas burners

Tue, 28 Apr 2015 08:00:00 EDT

A premix burner arrangement for safely oxygen-enriching a premix air-fuel combustion system is disclosed. In the disclosed burner arrangement, a first conduit is arranged and disposed to provide a first gas stream. The first gas stream is a self-reactive or self-flammable premixture comprising air and a combustible gas. At least one second conduit is arranged and disposed to provide a second gas stream circumferentially around the first gas stream. The second gas stream includes oxygen. The premix burner arrangement is configured to combust or react the first stream at a temperature at least 1000° F. greater than the temperature of the second stream. A method and combustion system including the premix burner arrangement are also disclosed.



Methods of combustion of powdered fuels and powdered fuel dispersions

Tue, 28 Apr 2015 08:00:00 EDT

Methods of combustion include metering a substantially explosible powder into an oxidizing gas using a positive displacement powder dispersion device to suspend the powder in the gas and directing the powder in the gas to form a controlled stream of a moving explosible powder dispersion. In some embodiments, the method further includes igniting the dispersion with an ignition source to produce a stationary deflagrating combustion wave and sustaining combustion by continuing to meter the powder into the gas. In other embodiments, the method further includes adjusting a nozzle velocity of the dispersion to reflect properties of the dispersion to create a sustainable flame and igniting the dispersion to produce a stationary deflagrating wave of the dispersion. In other embodiments, the method further includes igniting the dispersion in a combustion area to produce a stationary deflagrating wave such that a conductive heat transfer from combustion brings the powder to combustion temperature.



Solid fuel unit which burns solid fuels together with their volatile gases

Tue, 28 Apr 2015 08:00:00 EDT

The invention relates to solid fuel units having a fuel supply chamber wherein the fuel to be sent for combustion to the combustion region found in the body is placed and the feed mechanism carrying the solid fuel found in the chamber forward. It is characterized in that it includes a main burning block having a fuel and air cell connected to the solid fuel supply chamber and air outlet vents formed on the external wall surface. A preventive surface is positioned on the main burning block external wall surface in a way that it would form a closed volume in a certain distance.



Fuel preprocess system for coal combustion boiler

Tue, 14 Apr 2015 08:00:00 EDT

A fuel preprocess system for a coal combustion boiler is disclosed. The fuel preprocess system for a coal combustion boiler that dries biomass or refuse-derived fuel in accordance with the present invention can include: a dryer configured to dry the biomass or refuse-derived fuel by use of flue gas generated after combustion in the boiler; and a torrefier configured to devolatilize a fibrous component contained in the dried fuel from the fuel dried in the dryer by use of primary air that is heat-exchanged after the combustion in the boiler.



Method and apparatus for incinerating waste

Tue, 07 Apr 2015 08:00:00 EDT

The invention provides a method and apparatus for incinerating waste, wherein the waste is one or more of an organic waste and an inorganic waste. The apparatus includes a grinder for grinding a mixture of the waste and calcium carbonate. The ground mixture is then fed to a molten metal bath contained within a crucible. Thereafter, a heating member configured proximal to the crucible combusts the mixture of the waste and the calcium carbonate to form one or more of slag and one or more acidic gases. On combustion, the one or more acidic gases are neutralized by calcium hydroxide produced as a result of combusting the calcium carbonate. Additional metal compounds usable as fertilizers are also produced in response to reacting with the one or more acidic gases.



Elevated fixed-grate apparatus for use with multi-fuel furnaces

Tue, 07 Apr 2015 08:00:00 EDT

A combustion device in the form of an elevated fixed-grate that includes arcuately shaped solid refractory brick with ribs placed thereunder so as to allow horizontal air flow for fuel combustion. The brick are arranged atop one another in a stacked concentric configuration that forms a central fuel passageway and allows cascading of a fuel pile throughout the combustion stages. The device provides the benefit of proper de-ashing online while distributing the underfire air radially around the fuel pile. The elevated design of the bricks allows the air to be evenly distributed throughout the fuel pile and further allows the isolation of overfire and underfire air. Segregating overfire and underfire air in an evenly distributed manner allows the burner to combust a wide range of fuel moisture contents without modifying the mechanical components of the burner.



Slag-melting burner apparatus

Tue, 07 Apr 2015 08:00:00 EDT

A leading end located in a two-stage entrained-flow bed coal gasifier has a double-walled structure including an outer cylinder and an inner cylinder, and cooling water for cooling the leading end is supplied through an interior of the inner cylinder to cool the leading end and is then returned to a base end through a space formed between the outer cylinder and the inner cylinder. The space formed between the outer cylinder and the inner cylinder has a smaller channel area than the interior of the inner cylinder, and a swirling flow along a guide formed on an outer circumferential surface of the inner cylinder and a substantially linear flow in a longitudinal direction of the outer cylinder and the inner cylinder are applied to the cooling water returned to the base end through the space formed between the outer cylinder and the inner cylinder.



Gasification combustion system

Tue, 07 Apr 2015 08:00:00 EDT

A two stage refuse gasification combustion system for processing refuse is disclosed. The system may contain features such as an advancer, a first and second gasifier, a gas regulator, and a post combustor. Additionally, methods for regulating gas and advancing refuse through a two stage refuse gasification combustion system are disclosed.



Fluidized bed reactor

Tue, 31 Mar 2015 08:00:00 EDT

A fluidized bed reactor includes a bottom portion, a roof portion, and side walls vertically extending between the bottom portion and the roof portion, forming a reaction chamber of the reactor. At least one side wall of the reaction chamber forms at least one vertical indentation in the reaction chamber, which indentation extends from the plane of the at least one side wall towards the reaction chamber. The indentation extending from the plane of the at least one side wall towards the reaction chamber is formed of a portion of the at least one side wall, protruding from the plane of the at least one side wall towards the reaction chamber, and the portion of the at least one side wall includes at least two substantially vertical indenting wall portions deviating from the plane of the at least one side wall at vertical lines within a distance from each other.



Waste disposal plant with movable frame

Tue, 31 Mar 2015 08:00:00 EDT

A waste disposal plant includes a combustion chamber (2) inside which waste laid on a combustion grate (3) is burnt, which permits the entrance of an adequate quantity of combustion air in the chamber. The combustion grate includes at least a handling group formed by of fire bars or plates (7), which move alternatively one with respect to the other by advancing the waste on the grate. A handling group permits the alternate movement of the fire bars (7) which are divided in movable fire bars (7a) and fixed fire bars (7b), alternately disposed one with respect to the other, on transversal rows resting one upon the other according to a longitudinal placement with alternate steps.



Bladed coal diffuser and coal line balancing device

Tue, 31 Mar 2015 08:00:00 EDT

A coal nozzle assembly for a pulverized coal burner includes a diffuser. A flow conditioner also may be used with the assembly. The assembly conditions the coal/air flow before the coal/air flow is introduced to the furnace. The flow conditioner directs the coal into the diffuser where it is swirled to form a fuel rich outer ring disposed about an air rich inner portion before the fuel is delivered to the coal nozzle.



Back mixing device for pneumatic conveying systems

Tue, 24 Mar 2015 08:00:00 EDT

The present application provides a back mixing device for use with a pneumatically conveyed flow of solids having a varying flow rate. The back mixing device may include a nozzle, a chamber in communication with the nozzle, and an exit. The chamber may include an expanded area leading to a restriction such that the chamber creates a recirculation pattern in the flow of solids so as to smooth the varying flow rate though the back mixing device.



Furnace and ductwork implosion interruption air jet system

Tue, 24 Mar 2015 08:00:00 EDT

Apparatus and methods are disclosed for rapidly counteracting a transient low-pressure condition, that can occur intermittently in the exhaust section of a power plant or other such industrial facility upstream of exhaust fans as a result of an event that interrupts the generation and/or flow of exhaust gases, using jet nozzles disposed in the exhaust section and connected to a source of pressurized air or other suitable momentum material. By orienting the jet nozzles in a direction generally opposite to the flow of exhaust gas and actuating the system to release a burst of compressed air, for example in the event of a power plant interruption, the low-pressure condition can be ameliorated preventing damage to the exhaust section.



Apparatus for treating a substance with wave energy from plasma and an electrical Arc

Tue, 17 Mar 2015 08:00:00 EDT

An apparatus for synergistically combining a plasma with a comminution means such as a fluid kinetic energy mill (jet mill), preferably in a single reactor and/or in a single process step is provided by the present invention. Within the apparatus of the invention potential energy is converted into kinetic energy and subsequently into angular momentum by means of wave energy, for comminuting, reacting and separation of feed materials. Apparatuss of use of the apparatus in the practice of various processes are also provided by the present invention.



Method and multi-component nozzle for reducing unwanted substances in a flue gas

Tue, 17 Mar 2015 08:00:00 EDT

A method is illustrated and described for reducing unwanted substances by injecting a reactant into a flue gas of a steam generator. In order that the reactant can also be used in larger steam generators and/or combustion chambers, a method is proposed, in which the reactant is injected into the combustion chamber of the steam generator via a reactant opening of a multi-component nozzle, in which an enveloping medium is injected into the combustion chamber through at least one enveloping medium opening arranged outside the reactant opening, and in which the enveloping medium at least partly envelops the reactant in the combustion chamber and in this way at least partly shields the reactant from the flue gas.



Combustion process

Tue, 10 Mar 2015 08:00:00 EDT

A combustion process wherein a comburent, a fuel and the following components are fed: i) component B) sulphur or compounds containing sulphur in an amount to have a molar ration B1/C1≧0.5, wherein B1 is the sum by moles between the total amount of sulphur present in component B)+the total amount of sulphur (component B11)) contained in the fuel, C1 is the sum by moles between the total amount of alkaline and/or alkaline-earth metals contained in the fuel (component C11))+the amount (component C)) of alkaline and/or alkaline-earth metals in the form of salts and/or oxides contained in component B), ii) component A), comprising low-melting salts and/or oxides or their mixtures, having a melting temperature



Metal basket fitting inside kamado grills for removing charcoal

Tue, 10 Mar 2015 08:00:00 EDT

An ash basket can act as a sieve or strainer, allowing a user to lift out the charcoal from a kamado grill, clean out the ash, and place the ash basket back into the grill for future use. The ash basket retains larger pieces of charcoal that can be reused, while allowing the ash to pass through to a bottom plate of the grill. The bottom plate has openings to permit the ash to fall to an ash collection chamber. Without the ash basket, pieces of charcoal can block the openings in the bottom plate, making ash collection difficult. Moreover, with the openings blocked, proper air flow through the openings. Finally, the ash basket creates and additional air space that covers the entire surface of the interior walls by separating the ash from the wall, improving air flow, which is critical to the kamado grill design.



Adapting of an oxy-combustion plant to energy availability and to the amount of CO2 to be trapped

Tue, 10 Mar 2015 08:00:00 EDT

A carbon fuel combustion process, employing an air gas separation unit, a combustion unit operating either with air or with an oxidizer leaner in nitrogen than air, coming from the air gas separation unit, and a unit for compressing and/or purifying the CO2 coming from the combustion flue gas, wherein the power consumed by the air gas separation unit and/or the flow of oxygen produced by the air gas separation unit and/or the capture of the CO2 coming from the combustion flue gas are variable over time is presented.



Melters for glass forming apparatuses

Tue, 10 Mar 2015 08:00:00 EDT

Melters for glass forming apparatuses and glass forming apparatuses comprising the same are disclosed. According to one embodiment, a melter for melting glass batch materials includes a base portion and a rigid exoskeleton rigidly attached to the base portion and comprising a plurality of upright members interconnected with a plurality of cross members defining an exoskeleton interior volume. Connection nodes formed at intersections of the plurality of cross members with upper ends of the plurality of upright members are constrained from movement relative to the base portion in a longitudinal direction, a transverse direction, and a vertical direction. A tank assembly is positioned on the base portion in the exoskeleton interior volume and coupled to the rigid exoskeleton. In some embodiments, the melter has a dynamic resistance greater than 0.3.



Grain-drying facilities

Tue, 10 Mar 2015 08:00:00 EDT

The present invention provides grain-drying facilities which can effectively use the heat energy of a biomass combustion hot-air that has been generated in a biomass combustion furnace. The grain-drying facilities adopt technical means of providing the grain-drying facilities 1 which include: a biomass combustion furnace 3 provided with a heat exchanger 24 for generating hot air on the basis of a combustion heat of a biomass fuel and an outside air which has been taken in from the outside; and a circulation type grain-drying apparatus 2 provided with a grain-drying portion 7 to which the hot air that has been generated in the biomass combustion furnace 3 is supplied through a pipe 15 for supplying the hot air, wherein the above described circulation type grain-drying apparatus 2 has a grain-heating portion 6 which has a plurality of heating pipes 6a for heating the grains in the above described grain storing/circulating tank 5, and also has an air-exhaust fan 14 that is communicated with an exhaust side opening 6c that is located in one end side of each of the heating pipes 6a, and has a pipe 11 for supplying an exhaust hot-air, which communicates the exhaust hot-air sent from the above described biomass combustion furnace 3 with a supply side opening 6b that is located in the other end side of the heating pipe 6a.



Stir alarm

Tue, 03 Mar 2015 08:00:00 EST

A stir alarm device for monitoring a forced air in-bin grain stirring system and alerting an individual when the stirring system malfunctions. The stir alarm device may include a movement device which is movably secured to the stirring system, such that movement of the stirring system causes movement of the movement device. The stir alarm device may further include a detection mechanism for monitoring the movement of the movement device. The stir alarm may also include a signaling device operably attached to the detection mechanism, the signaling device for signaling a malfunction when an amount of movement detected by the movement detection mechanism is below a threshold for a predetermined period of time and may include methods or components to control the operation of the stir machine and/or drying system.



Combustion controller

Tue, 03 Mar 2015 08:00:00 EST

The combustion controller controls the fuel and air that are supplied to the combustion furnace for burning substances, and addresses the aforementioned object by including: fuel supply unit for supplying fuel and air into the combustion furnace; air supply unit for supplying air into the combustion furnace, the air supply unit being disposed downstream of the fuel supply unit in the direction of flow of combustion air; concentration measuring unit for measuring the concentration of hydrogen sulfide of the combustion air by passing a measurement beam of light through the combustion air at a measurement position downstream of the fuel supply unit in the direction of flow of the combustion air; and control unit for controlling the amount of air supplied from the fuel supply unit based on a measurement result provided by the concentration measuring unit.



Slag remover for discharging combustion residues of an incineration plant

Tue, 03 Mar 2015 08:00:00 EST

A slag remover for discharging combustion residues of an incineration plant comprises a trough, which has a trough housing having two side walls, which define the trough width, and having a trough bottom, and which is intended to collect the combustion residues evacuated from a combustion chamber of the incineration plant. The trough further comprises at least two push rams for pushing the combustion residues out of the trough, and a shaft rotatably mounted in two shaft bearings and on which at least one drive lever cooperating with a cylinder-piston unit and at least two output levers connected to respectively one of the push rams are disposed in a rotationally secure manner. The cylinder-piston unit is here designed such that the push rams move back and forth between a retracted position and an extended position. The drive lever is disposed between two output levers.



Dust coal boiler, dust coal combustion method, dust coal fuel thermal power generation system, and waste gas purification system for dust coal boiler

Tue, 24 Feb 2015 08:00:00 EST

A pulverized coal thermal power generation system that significantly reduces the amount of NOx emissions from a boiler and does not require a denitration unit is provided. When a denitration unit is not used, performance to remove mercury from a boiler waste gas is reduced. A waste gas purification system for a pulverized coal boiler, that compensates for this is provided. A pulverized coal boiler having a furnace for burning pulverized coal, burners for supplying pulverized coal and air used for combustion into the furnace so as to burn the pulverized coal in an insufficient air state and after-air ports provided on the downstream side of the burners for supplying air used for perfect combustion characterized in that, an air ratio in the furnace is 1.05 to 1.14, and the residence time of a combustion gas from the burner disposed on the uppermost stage to a main after-air port is 1.1 to 3.3 seconds. Preferably, water is mixed in advance with the air supplied from the after-air port so as to increase the specific heat. Furthermore, pulverized coal carrying air in the burner and a part of air used for combustion are mixed together in advance before they are jetted into the furnace.A waste gas purification system having a pulverized coal boiler, an air heater disposed downstream of the pulverized coal boiler for exchanging heat with a boiler waste gas to heat air used for combustion in the pulverized coal boiler, a dust removing unit, and a desulfurizing unit characterized in that, at least one of a halogen gas supply unit, a catalyst unit for oxidizing a mercury gas, and a mercury adsorbent blowing device is provided so as to oxidize mercury included in the waste gas.



System and method for cogeneration from mixed oil and inert solids, furnace and fuel nozzle for the same

Tue, 24 Feb 2015 08:00:00 EST

This invention provides a system and method for efficiently and completely combusting oil in mixture with particulate solids. A furnace (kiln) having a feed nozzle with a lead screw drives the mixture from a feed hopper. This nozzle includes forced-air jets/ports at its tip providing makeup air and allowing atomization of the mixture. The nozzle thereby directs the mixture into a rotating combustion chamber that is tilted downwardly from the front toward a solid waste outlet port at the rear. Uncombusted fuel and air backflow to an upper, secondary chamber near the primary chamber front, and are completely combusted at a high temperature. Gasses exit a flue that can include a heat exchanger. This heat exchanger can be operatively connected to a heating device or other mechanism that converts the heat into usable energy. The nozzle can include a cone with axially tilted air ports about its perimeter.



Apparatus for turbulent combustion of fly ash

Tue, 24 Feb 2015 08:00:00 EST

An apparatus for processing fly ash comprising a heated refractory-lined vessel having a series of spaced angled rows of swirl-inducing nozzles which cause cyclonic and/or turbulent air flow of the fly ash when introduced in the vessel, thus increasing the residence time of airborne particles. Also disclosed is a method of fly ash beneficiation using the apparatus.



Method of processing waste material

Tue, 17 Feb 2015 08:00:00 EST

An aspect of the present invention is a method of processing a waste material that contains mercury or a mercury compound, and chlorine or a mercury chloride, the method including a step of adding a chlorine scavenger to the waste material, and stowing the waste material in a treatment vessel; and a step of subjecting the waste material to a blasting treatment by fitting an explosive to the treatment vessel and detonating the explosive inside a pressure-proof container.



Method of constructing a stationary coal nozzle

Tue, 17 Feb 2015 08:00:00 EST

Disclosed herein is an apparatus and method of constructing a stationary wear-resistant stationary nozzle 200 and/or nozzle liner 230 for solid fueled furnaces. A transition section 210 is constructed from several flat pieces 211-218 several that may have identical starting shapes. This reduces manufacturing complexity and costs. All pieces 211-218 have a high-wear weld overlay on their inner surface 316, 416. Corner pieces 215-218 are folded into a corner shape at an outlet edge 412 and rolled into a curved shape at an inlet edge 411. Horizontal 211, 212 and vertical pieces 213, 214 are only rolled at an inlet edge 311. The pieces have seam tab 240 along longitudinal edges that are welded together to construct a transition section 210. The transition section 210 may be used as a liner to reduce wear in an existing stationary nozzle or may be constructed to be connected to an inlet piece 220 to form a strong, wear-resistant coal nozzle 200.



Pulverized coal burner and pulverized coal boiler having it

Tue, 10 Feb 2015 08:00:00 EST

A pulverized coal burner and a pulverized coal boiler. The coal burner comprises a primary air cylinder (111) and a pulverized coal concentration device (112). The coal concentration device (112) makes the concentration of the coal flow gradually decrease from inside to outside along the radial direction, with respect to an axis (100) of the primary air cylinder (111). The coal burner further comprises a coal separating cylinder (113) and a coal guiding cylinder (114) located downstream of the device (112), the rear end of the cylinder (113) is connected with the front end of the coal guiding cylinder (114). The outlet of the cylinder (114) has a conical expansion portion (1141). The coal burner further comprises a divergent nozzle (115) connected with the rear end of the primary air cylinder (111) and whose cross-sectional area gradually increases along the flow direction of the coal flow.



Methods and apparatus for the improved treatment of carbonaceous fuel and/or feedstocks

Tue, 03 Feb 2015 08:00:00 EST

The inventive technology includes methods and apparatus for the generation and application of segregated catalytic additives for the pre-combustion treatment of carbonaceous fuel and/or feedstocks. The application of such segregated additives results in the reduction of environmentally harmful emissions during combustion as well as gasification processes. Specifically, pre-combustion treatment of carbonaceous materials with the inventive additives results in the reduction of NOx and/or mercury emissions by least 20% and 40% respectively.



Wall lining of industrial ovens

Tue, 03 Feb 2015 08:00:00 EST

A wall lining of industrial ovens for protecting from corrosion, in particular, a heat-resistant wall made of concrete, steel, sheet metal, or the like. The lining of the wall is made of at least two layers, wherein a layer is pressurized as a blocking layer.



Pipe connecting structure of water heater

Tue, 03 Feb 2015 08:00:00 EST

A pipe connecting structure of a water heater. Individual parts in the water heater are integrally coupled with a pipe body, which is injection-molded, provides paths of tap water and hot water, reduces the number of pipes connecting the individual parts, and simplifies the connection structure of the pipes. The pipe connecting structure of the water heater includes a tap water inlet pipe connected from a tap water inlet to a heat exchanger; a hot water supply pipe connected from the heat exchanger to a hot water outlet; a flow sensor for measuring the flow rate of the tap water introduced via the tap water inlet; and a flow control valve for controlling the flow rate of the hot water discharged via the hot water outlet. The pipe body connects and is integral with the tap water inlet, the tap water inlet pipe, the hot water supply pipe, and the hot water outlet.



Incineration plant and method for controlling an incineration plant

Tue, 27 Jan 2015 08:00:00 EST

The invention relates to an incineration plant with a furnace, a device for feeding back incineration residues into the furnace, a device for measuring at least one parameter of the incineration, and devices for controlling the incineration. Moreover, the invention relates to a method for controlling an incineration plant.



Boiler grate and a boiler

Tue, 27 Jan 2015 08:00:00 EST

A boiler grate including air channels for supplying primary air to a furnace of a boiler. At least one channel, which is open on top, is arranged to collect ash and material from the furnace. At least one removal element is arranged in the channel and to mechanically move ash and material along the channel. A boiler includes a grate, a furnace which is limited by the walls of the furnace and the grate, and an ash chute, which is arranged to remove ash and material from the furnace. The ash removal elements is arranged to move ash and material towards the air chute.



Apparatus and methods for large particle ash separation from flue gas using screens having semi-elliptical cylinder surfaces

Tue, 20 Jan 2015 08:00:00 EST

Apparatus for separating ash particles from a flue gas. The apparatus includes a screen that has a plurality of semi-elliptical cylinder surfaces. The semi-elliptical cylinder surfaces having holes through which said flue gas flows and through which the ash particles will not pass. The screen has a single layer for performing the separation in a manner such that the ash particles fall away from the screen and collect outside of the screen. A method of reducing velocity of a flue gas passing through screening apparatus for separating flue gas from ash particles. The method includes replacing a first screen of the screening apparatus with a second screen that has a plurality of semi-elliptical cylinder surfaces.



Steam generation system

Tue, 13 Jan 2015 08:00:00 EST

A steam generation system delivers heats water and carbon dioxide at high temperatures in the presence of one or more plasma arc torches and converts the materials into hydrogen and carbon monoxide. The converted gas is delivered to a heat recovery steam generator (“HRSG”) to produce steam, which may be used to power a steam turbine. Depending on the amount of steam and/or power desired, the system may use a control system to vary the flow, temperature and pressure of the gas delivered to the HRSG. The control system may do this by bringing additional torches on-line or off-line in the processing chamber, by adding unheated gas directly from a supply source, shunting the gas from the HRSG, and varying the flow of water delivered to the HRSG.



Induced-draft injection systems and methods

Tue, 06 Jan 2015 08:00:00 EST

An exemplary embodiment of the present invention provides an induced-draft injection system comprising an injection line in fluid communication with a duct under negative pressure, a particulate storage containing particulate, and a feeder receiving the particulate from the particulate storage and feeding the particulate to the injection line. The negative pressure in the duct supports the transportation of at least a portion of the particulate through the injection line and into the duct. Inside the duct, a binding portion of the particulate is bound to a portion of mercury in a flue gas passing through the duct, thus enabling a portion of the mercury to be filtered out of the flue gas.



Reducing mercury emissions from the burning of coal

Tue, 30 Dec 2014 08:00:00 EST

Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components: reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or CI in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.



Low sulfur coal additive for improved furnace operation

Tue, 30 Dec 2014 08:00:00 EST

The present invention is directed to additives for coal-fired furnaces, particularly furnaces using a layer of slag to capture coal particles for combustion. The additive(s) include iron, mineralizer(s), handling aid(s), flow aid(s), and/or abrasive material(s). The iron and mineralizers can lower the melting temperature of ash in low-iron, high alkali coals, leading to improved furnace performance.



Gasifier having a slag breaker and method of operating the same

Tue, 30 Dec 2014 08:00:00 EST

A gasifier comprises an internal chamber, a slag collection region, a slag passageway, a slag breaker, and an actuator. The internal chamber comprises a main combustion region that is configured and adapted to gasify fuel. The slag collection region is located beneath the main combustion region. The slag passageway operatively connects the main combustion region to the slag collection region. The slag breaker comprises a face that is movable relative to the internal chamber. The face is configured and adapted to move within the slag passageway in a manner such that the face contacts and mechanically breaks solidified slag into chunks of solidified slag that then fall into the slag collection region. The actuator is connected to the slag breaker and is configured and adapted to move the face of the slag breaker.



Flameless combustion burner

Tue, 23 Dec 2014 08:00:00 EST

A burner has a fuel/oxidant nozzles and a pair of dynamical lances spaced on either side thereof that inject a jet of fuel and primary oxidant along a fuel injection axis, and jets of secondary oxidant, respectively. Jets of actuating fluid impinge against the jets of secondary oxidant to fluidically angle the jets of secondary oxidant away from the fuel injection axis. The action of the angling away together with staging of the oxidant between primary and secondary oxidant injections allows achievement of distributed combustion conditions.