30results about How to "Improve coal adaptability" patented technology

The invention discloses a low-load stable-combustion boiler combustor which comprises combustor bodies and a hearth. The combustor body comprises a shell, a secondary air pipe arranged in the center of the shell, a primary air pipe surrounding the two sides of the secondary air pipe, a biomass fuel pipe tightly attached to the inner wall of the shell, and the combustor bodies are arranged on the four corners of the hearth. The invention further discloses a combustion method of the low-load stable-combustion boiler combustor. During full-load combustion of the hearth, a biomass fuel inlet is closed, only pulverized coal combustion is adopted for hearth combustion, biomass combustion is not adopted, and hearth slag is relieved. During low-load operation, pulverized coal entering the hearth is reduced, the temperature of the hearth is reduced, flame combustion is unstable, in order to ensure stable combustion, the biomass fuel inlet is opened for feeding biomass fuel, and it is ensured that flame combustion is stable by means of the characteristics that biomass is high in volatile component, easy to ignite and good in heating value.

The invention discloses a multi-pass industrial pulverized coal boiler with a flue gas recirculation technology and a swirl pulverized coal burner on the top, and relates to an industrial pulverized coal boiler. The multi-process industrial pulverized coal boiler aims to solve the problems that a NOx emission load is high and burnout performance is poor in the existing industrial pulverized coal boiler. The multi-pass industrial pulverized coal boiler comprises a primary air pipe, a straight-flow secondary air pipe, a swirl inner secondary air pipe and a swirl outer secondary air pipe, and a boiler body is internally provided with a zigzag channel with three flue gas passes; the primary air pipe is arranged in the straight-flow secondary air pipe, the straight-flow secondary air pipe is arranged in the swirl inner secondary air pipe, and the swirl inner secondary air pipe is arranged in the swirl outer secondary air pipe; axial swirl blades are mounted in the swirl inner secondary airpipe and the swirl outer secondary air pipe; nozzles of the primary air pipe, the straight-flow secondary air pipe, the swirl inner secondary air pipe and the swirl outer secondary air pipe are flushwith a boiler top of the boiler body; a flue gas recirculation system communicates with the straight-flow secondary air pipe, the swirl inner secondary air pipe and the swirl outer secondary air pipe;and an outlet of an air-pulverized coal system communicates with the boiler body through the primary air pipe. The multi-pass industrial pulverized coal boiler is used for the manufacturing field ofthe coal-fired industrial boiler.

The invention provides an entrained flow gasifier for swirling melt cinder solidification. The entrained flow gasifier is divided into a pressure resistant jacket and a gasifier liner, wherein a gasification chamber, a swirling cooling chamber and a cinder solidification cooling chamber form the gasifier liner and are respectively separated by virtue of segmenting conical sealing heads; a shell of the gasification chamber is sequentially provided with a thermal insulation material layer, a cooling jacket and a wear resistant material layer from outsides to insides; a cooling water inlet is formed in the bottom of the gasification chamber, and a saturated steam outlet is formed in the side surface of the top part of the gasification chamber; a top nozzle is formed in the center of the top part of the gasification chamber, and more than 3 side nozzles are uniformly formed in the upper part of the gasification chamber along the circumference; a gasification product discharge hole is formed in the center of the segmenting conical sealing head which is arranged at the bottom of the gasification chamber; an atomization water cooling sleeve is arranged at the outer side of a gasification product discharge hole in the swirling cooling chamber, and a gas outlet is formed in the upper part of the swirling cooling chamber; a solidified cinder discharge hole is formed in the center of the segmenting conical sealing head arranged at the bottom of the cooling chamber, is connected with the solidified cinder cooling chamber and is introduced into the middle of the solidified cinder cooling chamber, and a water cooling cinder discharge hole is formed in the center of the segmenting conical sealing head arranged at the bottom of the solidified cinder cooling chamber. With the adoption of the entrained flow gasifier for swirling melt cinder solidification, waste heat is fully utilized, and the difficulty of black water is eliminated.

The invention relates to a double-channel combustor with thick pulverized coal and thin pulverized coal being separated and a use method thereof. The double-channel combustor with the thick pulverizedcoal and the thin pulverized coal being separated comprises a pulverized coal supplying mechanism, a transition channel, an internal secondary air guide duct, an external secondary air guide duct, acombustion stabilizing cavity and a rectifying cavity. The external secondary air guide duct, the combustion stabilizing cavity and the rectifying cavity are sequentially connected. The pulverized coal supplying mechanism comprises an air-pulverized coal pipe and a thick and thin pulverized coal separating device. The air-pulverized coal pipe communicates with the combustion stabilizing cavity. The thick and thin pulverized coal separating device is detachably connected to the air-pulverized coal pipe. The internal secondary air guide duct is coaxially arranged in the outer secondary air guideduct in a spaced manner. The transition channel is coaxially arranged in the internal secondary air guide duct in a spaced manner. The outlet end of the internal secondary air guide duct forms an expanded opening. The angle of the expanded opening is identical with the angle of the combustion stabilizing cavity. By the adoption of the double-channel combustor with the thick pulverized coal and the thin pulverized coal being separated, air can be divided into internal secondary air and external secondary air to respectively enter the combustor, the internal secondary air is combined with the transition channel to sufficiently mix pulverized coal and air, the external secondary air can form a cooling air layer flowing along the wall face of the combustion stabilizing cavity in the combustion stabilizing cavity, and the wall face of the combustion stabilizing cavity is protected against ash accumulation and coking.

The invention provides a gasification system and method for burning combustibles mixed with pulverized coal, including a feed system, a multi-channel gasification burner and a pulverized coal gasification furnace. Wherein the multi-channel gasification burner has eight channels arranged concentrically, and the pulverized coal, blended combustibles and oxygen enter the respective channels of the multi-channel gasification burner through the feed system respectively, so that the oxygen of each layer can be adjusted separately. The proportion of coal can achieve the effect of temperature control separately, which can improve the carbon conversion rate and the composition of effective gas in the synthesis gas. Co-firing of coals with different characteristics.

The invention discloses a multistage separation center backflow axial cyclone burner. A traditional cyclone burner technology needs to further reduce NOx emission. A primary wind pipe elbow (1) is connected with a primary wind pipe horizontal section (2); a center wind pipe module (5) and a connected combustion stabilizing ring (7) are arranged in the center of the primary wind pipe horizontal section; a pulverized coal uniform distributor (3) is arranged in an inlet; a venturi pulverized coal concentrator (4) is arranged near an outlet; a secondary wind pipe (10), a secondary wind gate (13) and a secondary wind pipe expanding port (17) are arranged at the external of the primary wind pipe horizontal section; a ternary wind pipe (11), a ternary wind gate (14) and a ternary wind pipe expanding port (18) are arranged at the external of the secondary wind pipe; the ternary wind pipe is provided with a ternary wind cyclone adjusting mechanism (15); a quartic wind pipe (12) is arranged at the external of a ternary wind pipe; the quartic wind pipe is provided with a quartic wind cyclone adjusting mechanism (16); and an outlet of a quartic wind pipe is connected with a water cooling wall pipe screen (19). The invention is applied to the multistage separation center backflow axial cyclone burner.

The invention relates to the technical field of coal-fired flue gas desulfurization, in particular to a slaked lime feeding device used for semi-dry desulfurization of coal-fired flue gas, comprising a silo, a silo top dust collector arranged on the top of the silo, and a silo bottom connected to the silo. A material conveying pipeline extending downward at the end, a variable frequency flow control electric valve connected in series on the conveying pipeline, a first particle concentration detector installed in the flue gas inlet channel of the desulfurization tower, and a circulating ash return flow of the desulfurization tower The second particle concentration detector and the controller in the tank, the first particle concentration detector, the second particle concentration detector, and the variable frequency flow control electric valve are respectively electrically connected to the controller, and the outlet at the lower end of the conveying pipeline is electrically connected to the controller. An annular flow divider is arranged on the feed port, and the discharge port of the annular flow divider is connected to a plurality of feed holes for feeding materials distributed along the circumference of the desulfurization tower tower wall on the desulfurization tower. The slaked lime feeding device of the invention feeds uniformly and has high desulfurization efficiency.

The invention discloses a fan coal mill with both the coal groove angle and the motor rotating speed being capable of being adjusted. The fan coal mill comprises a coal falling pipe, a raw coal conveying pipeline, a beating cavity, a coal mill motor, a coal groove motor and a powder discharging pipe. A bottom outlet of the coal falling pipe communicates with an inlet of the raw coal conveying pipeline, and the raw coal conveying pipeline communicates with an inlet of the beating cavity. A beating wheel is arranged in the beating cavity. A coal groove is formed in the raw coal conveying pipeline. An output shaft of the coal mill motor is connected with the beating wheel. An output shaft of the coal groove motor is connected with the coal groove. An outlet of the beating cavity communicateswith the powder discharging pipe. The coal mill motor is connected with a frequency converter. The adjusting range of the fineness of pulverized coal of the coal mill is wide.

The invention relates to coalification deep processing heating equipment. The coalification deep processing heating equipment is characterized in that a cavity below a driving fire grate is divided into an area A, an area B and an area C by a separating board AB and a separating board BC, an area A air adjusting push-pull rod is arranged in the area A, an area A air door is arranged on the separating board AB opposite to the area A air adjusting push-pull rod, a double-bottom air channel is arranged below the area A, a fan connecting port is formed outside the area A, a coal inlet, a front furnace arch, a middle furnace middle arch and a rear furnace arch are arranged above the driving fire grate, heat insulating materials are arranged above the middle furnace arch, the outside of the rear furnace arch is communicated with an ash cleaning port, a fire wall is arranged in a purification room, a flame path is arranged outside the purification room, and a distillation still outer wall is arranged outside the flame path. The coalification deep processing heating equipment has the advantages that rolling wheels are arranged on the bottom portion of the coalification deep processing heating equipment, the coalification deep processing heating equipment is convenient to move, and the coalification deep processing heating equipment is small in size, small in occupied area, unique in air distribution mode, strong in coal type adaptability, sufficient in coal seam burning, low in carbon content of ash, stable in heating system, convenient to maintain and capable of solving the problems of large coal consumption of an industrial furnace, poor working conditions and the like well.

The invention provides a coal power furnace decoking agent, which is characterized by comprising the following raw material components: sodium chloride, sodium nitrate, sodium chlorate, dolomite powder, quartz powder, kaolin, magnesium oxide, iron oxide red and charcoal, and comprises the following raw materials in parts by weight: 50-65 parts of sodium chloride, 20-33 parts of sodium nitrate, 11-20 parts of sodium chlorate, 4-6.2 parts of dolomite powder, 0.4-1.1 parts of quartz powder, 1.2-3.5 parts of kaolin, 1.20-2.9 parts of magnesium oxide, 2-5.6 parts of iron oxide red and 0.3-0.9 partof charcoal. By adopting the decoking agent, coke blocks appearing in operation can be eliminated in time, so that the cleanness of a heating surface is effectively kept, and the heat efficiency of the boiler can be continuously operated at a high level.