82results about How to "Increase gasification strength" patented technology

The invention relates to a gasified gas purification device, in particular to a double-flow biomass gasified gas purification device, which solves the problems of low reaction temperature of a gasification furnace, abundant generated tar and wastewater, low gas-producing efficiency and abundant impurities and low heat value of output gas, resulted from unscientific structure of the gasification furnace. The gasified gas purification device comprises a gasification furnace, a gas flow control valve, a vortex flow oxidation-assisted control valve, a gas purifier and a fan. The gasified gas purification device provided by the invention has the advantages of increasing the reaction temperature of the furnace, wherein the temperature in oxidation, reduction and pyrolysis cylinders is between 1,300 and 1,600 DEG; increasing the gasification intensity; being capable of quickly separating moisture in biomass combustible gas so that gas quality is better; ensuring greatly reduced tar content in the combustible gas, less wastewater generated, high gas-producing efficiency and low environmental pollution due to the adoption of a mesh-type catalytic cracking device; and removing tar, moisture and ash in the gas through the gas purifier so that the heat value of the gas is improved. The gasified gas purification device is widely applied in industrial and civil fields.

The invention provides a solid biomass semiwater gas generating furnace, which includes a furnace body, a transmission mechanism, a feeding mechanism and a residue discharging mechanism. A head preserving layer 2 and a fire resisting layer 3 are arranged in the furnace body, a heat exchanger pipe 4 is arranged in the fire resisting layer 3, and a material homogenizing harrow is arranged on the hearth. A clinker chamber 12 and a cooling water tank 13 are arranged on the underside of the furnace body 1, a gasification agent inlet 14 is arranged on the clinker chamber 12, and a clinker outlet 15 is arranged on the bottom of the clinker chamber which is connected with a spiral clinker discharger 17. A rotatable furnace grate is arranged on the interface of the hearth and the clinker chamber 12. The invention can feed material and discharge clinker continuously, ensures the continuous stability of the gasification process, uses the vapor generated by residual heat to participate in gasification reaction, improves the carbon utilization rate, and improves the gasification rate of the solid biomass. Compared with gasification furnace with uniform section, the gasification strength of the invention is improved by 1.5-2.0 times, and the combustible gas calorific value is doubled.

The invention provides an underground lane control gas supply side line gasification furnace. The furnace comprises a coal gas passage, multi-drill holes which are drilled directionally on the bottom of a coalbed in the coal gas passage, a gas supply lane, a gas supply pipe and a plurality of temperature pressure and flow testing instrument valves arranged in a base plate rock of the coalbed, and a gas supply branch pipe between the gas supply lane and the multi-drill holes. The system has a simple structure, easy configuration and reliable operation. The furnace capable of carrying out simultaneous multi-point gasification has the advantages of higher output, gas supply protection, controllability, adjustment as required, and the like. The furnace can solve a plurality of problems of poor gasification effect, discontinuous and unstable gas production, small gas output, low gasification rate, and the like.

The invention relates to a pressure gasification process for simultaneously gasifying powdered coal and coal water slurry. The pressure gasification process is characterized in that a purpose-made gasification furnace is used, the gasification furnace is provided with a purpose-made powdered coal burner and a start-up burner and capable of simultaneously processing the coal water slurry and the powdered coal; gasification comprises the following steps of carrying out ignition start-up, igniting the powdered coal burner, increasing the temperature and pressure of the gasification furnace and a carbon washing tower, igniting a coal water slurry burner, increasing the pressure inside a gasification chamber, and controlling continuous gasification under a specific reaction condition. The pressure gasification process disclosed by the invention can be used for solving the problems of low effective component, high requirement on the quality of coal fed into the furnace, short life of the coal water slurry burner, short operation time of a single furnace, short life of a refractory brick, low coal slurry concentration and the like of a synthetic gas obtained through the traditional coal water slurry and solving the problems of large investment, complex equipment, high comprehensive energy consumption and the like of the traditional powdered coal gasification process.

The invention provides a supercritical carbon dioxide power generation and coal gasification coupled system and method; the system comprises a supercritical carbon dioxide power generation system anda supercritical carbon dioxide coal gasification system. The supercritical carbon dioxide power generation system includes a compressor, a turbine, a power generator, a high pressure storage tank, a low pressure storage tank, a combustion chamber heat exchanger, a heat regenerator and a pre-cooler; the supercritical carbon dioxide coal gasification system includes a pulverized coal pressurizationdevice, a gasification furnace, a combustion chamber and a purifier. The system and method can adopt supercritical carbon dioxide as a gasification agent for coal gasification, and gasified coal gas is used in supercritical carbon dioxide power generation.

The invention discloses a coal gasifier for slag granulation and a coal gas preparation process. The coal gasifier is mainly composed of a pressure-bearing housing, a slag film gasification device, an annular chamber structure slag basin, a quenching chamber, a conduit, a convection cooling section and the like. The process comprises the following steps: with pulverized dry coal or coal water slurry as a raw material, feeding the raw material to a gasification chamber to burn and gasify together with a gasifying agent from a vortex gasification burner; enabling formed liquid slag to collide with the wall surface of the gasification chamber under the vortex action, and flowing from bottom to top under the action of gravity; feeding to the slag basin of the annular chamber structure, carrying out further gasification reaction together with oxygen fed from the upper part of the slag basin, and discharging from a slag discharge hole; feeding coal gas main airflow to the quenching chamber together with liquid drops, cooling to a specific temperature, and then conveying to the convection cooling section to further lower temperature through the conduit; finally removing dust, purifying and then outputting. The liquid slag drops penetrating through the slag basin are cooled to form solid particles and are collected by a dry slag collector; and the heat is recovered by a slag cooler.

The invention discloses a swirl-flow type gasification furnace and swirl-flow type gasification process. The swirl-flow type gasification furnace comprises a furnace body (1), a feeding spray gun (2), a hot coal gas outlet (3) located at the top part of the furnace body, and a slag-melting chamber (4) located at the bottom part of the furnace body. According to the invention, the feeding spray gun used for entering the gasification furnace adopts tangent feeding, and the spray gun slopes down with a certain angle, so gasification raw materials are gasified in a swirl-flow form in the furnace; relative speeds of gas and solid phases are enhanced; retention time is prolonged; and gasification intensity and carbon transformation rate of the gasification furnace are improved; meanwhile, multi-layer spray-gun feeding is adopted, so classified supply of a gasifying agent is realized; reaction of the gasification raw materials and the gasifying agent in the gasification furnace is more fully; and gasification efficiency is higher.

The invention relates to an apparatus and a method for producing methane-rich synthesis gas through efficient coal catalytic gasification. A purpose of the present invention is to solve the problems of low carbon conversion rate, low gasification intensity, low methane yield, high energy consumption and poor gasification furnace operation stability in the prior art. The apparatus comprises a fluidized bed gasification furnace and a fluidized bed pyrolysis methanation furnace, wherein a raw material inlet is positioned on the upper portion of the fluidized bed pyrolysis methanation furnace, thebottom portion of the fluidized bed pyrolysis methanation furnace is connected to the bottom portion of the fluidized bed gasification furnace, and a synthesis gas conduction pipe connected to the outlet above the fluidized bed gasification furnace extends into the bottom portion of the pyrolysis methanation furnace. The method mainly comprises that a catalyst-loading coal sample and high-temperature synthesis gas are subjected to a catalytic pyrolysis and methanation reaction in the fluidized bed pyrolysis methanation furnace, the semi-coke particles obtained after the pyrolysis and fly ashparticles enter the fluidized bed gasification furnace, and a combustion gasification reaction is performed. With the technical scheme of the present invention, the problems in the prior art are wellsolved. The apparatus and the method of the present invention can be used for the coal-to-methane-rich synthesis gas field.

The invention relates to a device and method for gasifying pulverized coal through strong rotation of gasifying agents and in particular relates to a device and method for gasifying pulverized coal through stratified strong rotation of gasifying agents along the furnace height, aiming to solve the problems in the prior art that slag adheres to the walls of gasifiers non-uniformly and temperature distribution along the directions of the furnace heights is non-uniform. The device is characterized in that a water wall is installed in a gasifier body and is formed by a plurality of vertical circular tubes; the water wall forms a rotator gasifier hearth by enclosing; a slag bath is arranged at the bottom of the gasifier body; a synthesis gas channel is inserted in the lower part of the gasifier body; a plurality of gasifying agent nozzles are uniformly formed in the upper outer side wall of the gasifier body from top to bottom in sequence and are in a same vertical plane; each gasifying agent nozzle is inserted in the gasifier hearth along the tangential direction of the gasifier hearth; a pulverized coal burner is installed at the top of the gasifier body; the axis of the pulverized coal burner coincides with that of the gasifier hearth; and a pulverized coal channel with a ring-shaped cross section is arranged in the pulverized coal burner. The device and the method are used in the field of coal gasification.

The invention discloses a coal gasification system and a coal gasification method using supercritical carbon dioxide as a gasifying agent. The coal gasification system comprises a gasification furnace system, a coal gas purification system and a carbon dioxide storage and utilization system, wherein the gasification furnace system comprises a pulverized coal pressurization device, a burner nozzle and a gasification surface; the coal gas purification system comprises a coal gas cooler, a gas purification system, a chilling gas compressor, a carbon dioxide separation system, a carbon dioxide compressor and a chilling heat exchanger. By using the system and the method, the supercritical carbon dioxide can be used as the gasifying agent for the gasification of coal.

The invention provides a gasification reduction device for co-production of yellow phosphorus and synthesis gas. The gasification reduction device comprises a phosphocoal gasification reduction unit and a chilling unit. The phosphocoal gasification reduction unit is communicated with the chilling unit vertically, and the phosphocoal gasification reduction unit is used for realizing gasification reduction reaction of all materials in the phosphocoal gasification reduction unit to obtain phosphorus-containing furnace gas; and the chilling unit is used for cooling slag formed in the phosphocoal gasification reduction reaction process into a solid state and discharging the solid state. The invention also provides a method for implementing co-production of yellow phosphorus and synthesis gas byusing the gasification reduction device. The gasification reduction device is a technology which is high in energy utilization rate, optimized in process, energy-saving, environment-friendly and lower in cost.

The invention discloses a three-layer gas supply heating self-conversion tar gasifier. The gasifier is composed of a double bell coal feeder, a gasifier body, a three-layer of gas supply heating gasifier distributor, an ash residue discharging structure and a gas supply system; the three-layer of gas supply heating gasifier distributor is provided with a coal gas delivery line in the center in themiddle of the interlayer gasifier body, and the coal inlet at the bottom of the three-layer of gas supply heating gasifier distributor is arranged between a second gas supply heating gasifier distributor and a third gas supply heating gasifier distributor; a first gas supply heating gasifier distributor is located at the upper part of the gasifier body; the second gas supply heating gasifier distributor is located on the inner side of the middle gasifier wall and the outer side of the coal gas delivery line; and the third gas supply heating gasifier distributor is located in the center at thebottom of the gasifier body. Through the structural improvement of the gasifier, a high-temperature region can be formed, so that tar can be cracked and gasified in the high-temperature region, the performance of the gasifier can be greatly enhanced, efficient cleaning conversion of coal can be realized, and powerful support can be provided for development of coal gasification technologies.

The invention relates to a fluidized bed and molten bed combined gasification apparatus and a fluidized bed and molten bed combined gasification method. A purpose of the present invention is to solvethe problems of low carbon conversion rate, low gasification intensity, low effective gas concentration, and poor operation stability and poor reliability of the gasification furnace in the prior art.The technical scheme of the present invention comprises that the fluidized bed and molten bed combined gasification apparatus comprises a fluidized bed gasification section on the upper portion and amolten bed gasification section on the lower portion, the two gasification sections are connected by using a throat, the lower portion of the fluidized bed gasification section is provided with a rawmaterial inlet and a return material inlet, and the side surface of the molten bed gasification section is provided with gasification agent spraying nozzles. The fluidized bed and molten bed combinedgasification method mainly comprises that a carbon-containing raw material and a gasification agent are subjected to a gasification reaction in the fluidized bed gasification section, the incompletely-reacted flying ash is collected by a cyclone separator and a return material device, and is cyclically introduced into the fluidized bed gasification section, and the generated coarse residue is further combusted in the molten bed gasification section. With the technical scheme of the present invention, the problem in the prior art is well solved. The apparatus and the method of the present invention can be used in the coal gasification field.

The invention discloses a biomass (especially briquette straw) gasification furnace, in particular a fixed bed gasification furnace with an anticorrosion liner which can effectively prevent corrosion of alkali metals on the furnace wall. The gasification furnace comprises a charging device (1), a gas discharge port (2), a furnace body (3), a grate (4), a dust discharge port (5), an air inlet (6) and the like. The raw material is continuously added from the upper part and moves downwards under the action of gravitation to form a stable reduction layer (completely reacts with oxygen in air), and slag is discharged from the bottom; and air enters from the lower part, and gas is discharged from the upper part. The inner diameter of the gasification furnace is 3 m, the height is more than 3 m, and the gasification intensity is at least 100 m<3>/(m<2>h). The carbon conversion rate of the gasification furnace can reach 95%, and the oxygen content of gas can be below 0.6%. The invention has the advantages of high production capacity, long operating cycle and good gas quality, and can be used for combustion or power generation.

The invention relates to a two-stage gasification method and device for coke-containing solid particles, which adopts two-stage fluidized bed reactors connected in series to realize continuous gasification, including the first-stage gasification reaction at a temperature of 800-900°C; Solid separation to obtain the first synthesis gas product and the first separated solid particles; the separated first solid particles go down to the second fluidized bed reactor through external circulation to undergo the second stage gasification reaction at 900-1000°C; Solid separation to obtain the second synthesis gas product and separated second solid particles; when the second synthesis gas product is drawn out to the outside world, part of it is introduced into the first fluidized bed reactor, or all of it is drawn out to the outside world, and the separated second solid The particles are continuously removed from the second fluidized bed reactor. The implementation of the two-stage series gasification method proposed by the invention can reduce the size of the gasification reactor, reduce investment, and produce gas products with different calorific values ​​to meet the different requirements of refineries.

The invention relates to a furnace body cooling device of coal gasifier, a feed coal inlet pipe section is arranged at the top of a furnace body, and a gasification reaction hearth is arranged in themiddle of the furnace body; a coal distribution section cooling water jacket device is arranged on the taper-pipe-shaped coal distribution section, a first water supply pipe connector is arranged on one side of the coal distribution section cooling water jacket device, and a coal distribution section steam outlet pipe is arranged on the other side; a furnace body cooling water jacket device is arranged on the outer wall of the furnace body, a second water supply pipe connector is arranged on one side of the furnace body cooling water jacket device, and a furnace body steam outlet pipe is arranged on the other side of the furnace body cooling water jacket device; the steam supply pipeline is communicated with an input port of a gasifying agent pipe at the bottom of the furnace body, and acooling water outlet pipe joint and a make-up water pipe joint are arranged at the bottom of the steam collector and respectively communicated with a first water supply pipe joint and a second water supply pipe joint through cooling water distribution pipelines.

The invention relates to a gasification-flash pyrolysis graded utilization method for biomass and low-rank coal and mainly solves the problems that the tar yield is low, the low-rank coal is difficultto use and excessively depends on heat carriers and the like in the prior art. The method adopts combination of technologies for preparing synthesis gas through gasification and preparing tar throughflash pyrolysis and mainly comprises steps as follows: a mixture of biomass and the low-rank coal enters a pyrolysis furnace through a feeding device, is heated by high-temperature circulating semi-coke from a gasifier and is subjected to flash pyrolysis at a high linear speed, volatile components are separated out, and semi-coke is obtained; the volatile components are fed into a condenser by agas-solid separation device and is condensed, a tar product with biomass oil as a main component is obtained, the semi-coke is fed into the gasifier and reacts with a gasifying agent, and the synthesis gas and the high-temperature circulating coke are produced; after separation, the synthesis gas is purified by a purification device and processed into a chemical raw material, and the high-temperature circulating semi-coke is fed into a pyrolysis furnace and supplies heat continuously to the raw materials for pyrolysis. The method can be applied to the technical field of the coal chemical industry.