CN106635177B - High-efficiency low-consumption high-hydrogen gas generation system - Google Patents
High-efficiency low-consumption high-hydrogen gas generation system Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
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- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
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- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
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- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
- C10J2300/0933—Coal fines for producing water gas
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- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched air
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
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- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
- C10J2300/1643—Conversion of synthesis gas to energy
- C10J2300/1653—Conversion of synthesis gas to energy integrated in a gasification combined cycle [IGCC]
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- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1687—Integration of gasification processes with another plant or parts within the plant with steam generation
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1884—Heat exchange between at least two process streams with one stream being synthesis gas
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- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1892—Heat exchange between at least two process streams with one stream being water/steam
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
The invention relates to a high-efficiency low-consumption high-hydrogen gas generation system. The coal storage tank is connected with the coal gas generating device. The coal gas generating device consists of a reaction section, a gas supply section, an ash discharge section, a vaporizing agent heating section, a cooling section and an ash storage cylinder; an exhaust pipe I arranged at the upper end of the reaction section is connected with a cyclone dust collector, and the bottom of the cyclone dust collector is communicated with the inner cavity of the reaction section; a fire grate is arranged between the reaction section and the gas supply section; the gas supply section is provided with an annular gas supply hole; the vaporizing agent pipeline is arranged in the vaporizing agent heating section; the cooling section is connected with the ash storage cylinder through an ash discharge valve I. The lower end of the cyclone furnace body is connected with an ash storage cylinder II through an ash discharge valve II, and a water storage tank is arranged along the inner wall of the furnace body and the outer wall of the exhaust passage; one end of the exhaust pipe II is connected with the cyclone dust collector, and the other end of the exhaust pipe II is communicated with the furnace body. One end of the water vapor pipeline is connected with the water vapor outlet, the other end of the water vapor pipeline is connected with the mixed gas chamber, and the oxygen-enriched air pipeline is connected with the mixed gas chamber. The invention has the advantages of high utilization rate of raw materials, high heat value of coal gas, high hydrogen content and high heat value utilization rate.
Description
Technical Field
The invention relates to a high-efficiency low-consumption high-hydrogen gas generation system of high-hydrogen gas, which can purify high-hydrogen gas generated by a gas generation device and then use the high-hydrogen gas for combustion.
Background
Two-stage gas furnaces are commonly used for producing semi-water gas to prepare hydrogen or synthesize urban fuel gas, and the traditional two-stage gas furnace has the problems that: the calorific value of the coal gas is low, only about 1200 calories, the hydrogen content is low, and the utilization rate of the pulverized coal is low; the heat value of the discharged gas and the heat value of the slag are not fully utilized, and energy is wasted; the phenomena of over temperature, slag bonding and furnace deflection easily occur at the local part of the furnace bottom; the furnace top carries more substances and pollutes the environment.
Disclosure of Invention
In order to solve the problems, the invention provides a high-efficiency low-consumption high-hydrogen gas generation system which has high utilization rate of raw materials, high calorific value of gas, high hydrogen content, high utilization rate of calorific value and high operation rate of equipment.
The invention adopts the technical scheme that: the high-efficiency low-consumption high-hydrogen gas generation system is formed from coal storage tank, gas generation device and waste heat utilization device.
The coal storage tank is communicated with the inner cavity of the coal gas generating device through a coal feeding valve and a feeding port.
The coal gas generating device consists of a reaction section, a gas supply section, an ash discharge section, a vaporizing agent heating section, a cooling section and an ash storage cylinder I; an exhaust pipe I is arranged at the upper end of the reaction section and connected with a cyclone dust collector, and the bottom of the cyclone dust collector is communicated with the inner cavity of the reaction section through a dust falling pipe; a funnel-shaped fire grate is arranged between the reaction section and the gas supply section; the lower end of the fire grate passes through the ash discharge section and then extends into the vaporizing agent heating section; the gas supply section is provided with an annular gas supply hole which supplies a gasifying agent to the reaction section through a plurality of branch gas passages; the gasification agent pipeline is arranged in the gasification agent heating section, one end of the gasification agent pipeline is connected with the annular gas supply hole, and the other end of the gasification agent pipeline penetrates through the gas generation device and is connected with the mixed gas chamber; the cooling section is connected with an ash storage cylinder I through an ash discharge valve I.
The waste heat utilization device is characterized in that the lower end of a furnace body of the cyclone waste heat furnace is connected with an ash storage cylinder II through an ash discharge valve II, an exhaust passage is arranged in the furnace body, a water storage tank is arranged along the inner wall of the furnace body and the outer wall of the exhaust passage, and the water storage tank is connected with a water inlet pipe arranged at the lower end of the furnace body; the upper end of the water storage tank is provided with a steam outlet.
One end of the exhaust pipe II is connected with the cyclone dust collector, and the other end of the exhaust pipe II is communicated with the inner cavity of the furnace body after penetrating through the furnace body and the water storage tank.
One end of the water vapor pipeline is connected with the water vapor outlet, the other end of the water vapor pipeline is connected with the mixed gas chamber, and the oxygen-enriched air pipeline is connected with the mixed gas chamber.
In the high-efficiency low-consumption high-hydrogen gas generation system, the outlet end of the dust falling pipe is arranged at the upper part of the feeding port in the reaction section.
In the high-efficiency low-consumption high-hydrogen gas generation system, the outlet end of the dust falling pipe is provided with the slag separating disc, the slag separating disc is provided with a plurality of dust outlet holes, and the lower end of the slag separating disc is made into a conical shape.
In the high-efficiency low-consumption high-hydrogen gas generation system, the plurality of branch gas passages are distributed on the annular gas supply hole in an upper layer and a lower layer, and the outlets of the corresponding upper layer and the lower layer of branch gas passages are arranged in a stepped manner.
In the high-efficiency low-consumption high-hydrogen gas generation system, the heat-insulating layer is built outside the refractory material layer forming the main body of the gas generation device.
In the high-efficiency low-consumption high-hydrogen gas generation system, the vaporizing agent pipelines are spirally arranged in the vaporizing agent heating section.
In the high-efficiency low-consumption high-hydrogen gas generation system, the inlet end of the exhaust pipe II is higher than the bottom end of the exhaust channel in the furnace body.
In the high-efficiency low-consumption high-hydrogen gas generation system, the bottom of the reaction section is made into a cone shape and corresponds to the upper end of the funnel-shaped fire grate.
In the high-efficiency low-consumption high-hydrogen gas generation system, a cooling water layer is arranged along the inner wall of the cylinder in the cooling section.
A high-efficiency low-consumption high-hydrogen fuel gas generation method comprises the following steps:
1) the pulverized coal stored in the coal storage tank enters the lower end of a reaction section of the coal gas generation device through a coal feeding valve through a feed inlet, and the generated coal gas rises after high-temperature heating and combustion reaction and enters a cyclone dust collector through an exhaust pipe I; the burned coal cinder enters a funnel-shaped grate, the high-temperature gasification agent supplied from an annular gas supply hole continuously heats the coal cinder in the grate, and the coal ash flows out of the grate and enters an ash storage cylinder I through an ash discharge section, a gasification agent heating section, a cooling section and an ash discharge valve I to be discharged;
2) the high-temperature coal gas entering the cyclone dust collector enters the inner cavity of the furnace body through the exhaust pipe II after dust removal, and is exhausted through the exhaust channel; the dust in the cyclone dust collector falls into the reaction section of the gas generating device through the dust falling pipe to contact with the rising high-temperature gas, and then is continuously and fully combusted;
3) the high-temperature coal gas entering the furnace body heats the water in the water storage tank, the water vapor enters the mixing air chamber through the water vapor pipeline and is mixed with the oxygen-enriched air entering through the oxygen-enriched air pipeline to form a vaporizing agent, and the vaporizing agent is heated for the first time;
4) the heated vaporizing agent enters the vaporizing agent pipeline, and after being heated for the second time in the vaporizing agent heating section, the gas is supplied to the reaction section through the annular gas supply hole.
The beneficial effects of the invention are as follows:
1. the invention saves raw materials and has high utilization rate of pulverized coal. The outlet end of the blanking pipe is arranged at the upper part of the pulverized coal material, so that when dust removed by the cyclone dust collector falls back to the reaction section again, the dust contacts with the rising high-temperature coal gas and is further fully combusted. The cinder after the combustion at the bottom of the reaction section enters a funnel-shaped grate and is further heated by the high-temperature vaporizing agent to be fully combusted, one part of heat value is supplied for the combustion of the reaction section, the other part of heat value drops along with the dust, and the vaporizing agent in the vaporizing agent pipeline is secondarily heated in the vaporizing agent heating section. The pulverized coal is fully combusted, the generated heat value is fully utilized, the raw materials are saved, the heat value is fully utilized, and the energy is saved.
2. The invention is created, a plurality of branch air passages are distributed on the annular air supply hole in an upper layer and a lower layer, and the outlets of the corresponding upper layer and lower layer of branch air passages are arranged in a stepped way with the lower layer retracted, thus preventing the falling coal ash from blocking the air outlet and influencing the supply of the gasifying agent to the reaction section.
3. The invention is characterized in that a funnel-shaped grate is arranged between the reaction section and the gas supply section, coal slag enters the grate, coal ash is discharged from the grate seam, large coke blocks are retained in the grate and continue to be combusted and reacted, and coal gangue substances are discharged from the lower end of the grate.
4. The invention reduces the environmental pollution by cyclone dust removal twice for high-temperature coal gas.
5. The invention is created, the high-temperature coal gas enters the whirlwind type waste heat utilization device, heat water, the water vapor enters the mixing air chamber through the pipeline, heat the oxygen-enriched air for the first time, has effectively utilized the calorific value of the high-temperature coal gas.
6. The invention mixes high-temperature water vapor and oxygen-enriched air to form a vaporizing agent, and further uses the vaporizing agent for air supply in a heating section and high-temperature hydrogen production, the heat value of the coal gas discharged from a waste heat utilization device reaches 2200-.
Drawings
Fig. 1 is a schematic structural diagram of the invention.
Fig. 2 is a schematic view of the structure of the grate.
Fig. 3 is a schematic diagram of the distribution structure of the annular air supply holes and the branch air passages.
Fig. 4 is an enlarged schematic view of the gas supply section.
Detailed Description
Example 1 high-efficiency low-consumption high-hydrogen gas generation system
As shown in fig. 1, the high-efficiency low-consumption high-hydrogen gas generation system is composed of a coal storage tank 1, a gas generator, and a waste heat utilization device.
The coal storage tank 1 is communicated with the inner cavity of the coal gas generating device through a coal feeding valve 2 and a feeding port 3. The coal feeding valve 2 adopts a star-shaped valve. The pulverized coal stored in the coal storage tank enters a reaction section of the coal gas generating device through a coal feeding valve and a feeding port.
The coal gas generating device is composed of a reaction section 4, a gas supply section 5, an ash discharge section 6, a vaporizing agent heating section 7, a cooling section 8 and an ash storage cylinder I9.
The reaction section 4, the gas supply section 5, the ash discharge section 6 and the vaporizing agent heating section 7 are built into an integral structure by a refractory material layer 30. For further heat preservation, a heat preservation layer 31 is built outside the refractory material layer 30. The lower end of the reaction section 4 is tapered.
The upper end of reaction section 4 is equipped with blast pipe I10, and blast pipe I10 is connected with cyclone 11, and cyclone 11's bottom is through dust fall pipe 12 and the inner chamber intercommunication of reaction section 4.
The outlet end of the dust falling pipe 12 is provided with a slag separating disc 29, the slag separating disc 29 is provided with a plurality of dust outlet holes, and the lower end of the slag separating disc is made into a cone shape. The outlet end of the dust falling pipe 12 is arranged at the upper part of the feeding port 3, so that the outlet end of the dust falling pipe is arranged above the surface of the pulverized coal material, and the falling coal ash is ensured to be continuously heated by the rising high-temperature coal gas to perform full reaction.
A grate 13 is arranged between the reaction section 4 and the gas supply section 5. As shown in fig. 2, the grate 13 is funnel-shaped. The conical part at the upper end corresponds to the conical part at the bottom of the reaction section, so that the coal slag after combustion is ensured to enter the grate 13. Thus, the coal slag falling into the grate continuously reacts in the descending process, the coal ash flows out from the holes of the grate, and the large slag is left in the grate to descend so as to prevent the furnace from being blocked by slagging.
The lower end of the grate 13 extends into the vaporizing agent heating section 7 after passing through the ash discharge section 6.
The gas supply section 5 is provided with an annular gas supply hole 14, and the annular gas supply hole 14 supplies the gasifying agent to the reaction section 4 through a plurality of branch gas passages 15. In a preferred mode, as shown in fig. 3 and 4, the plurality of branch air ducts 15 are distributed in two layers above and below the annular air supply hole 14, and the outlets of the corresponding branch air ducts 15 in the two layers above and below are arranged in a stepped manner, that is, the length of the branch air duct 15 in the upper layer is greater than that of the branch air duct 15 in the lower layer.
The vaporizing agent pipeline 16 is arranged in the vaporizing agent heating section 7 and is spirally arranged, one end of the vaporizing agent pipeline is connected with the annular gas supply hole 14, and the other end of the vaporizing agent pipeline penetrates through the gas generating device and is connected with the mixed gas chamber 17. The gasification agent pipeline 16 is spirally arranged, so that the gasification agent flowing through the gasification agent pipeline is heated for the second time in the gasification agent heating section 7, the spiral arrangement prolongs the heating time, and the heat value of the coal ash is fully utilized.
In the cooling section 8, a cooling water layer 32 is formed along the inner wall of the cylinder. And high-temperature coal ash enters the cooling section, is cooled, enters the ash storage cylinder I9 through the ash discharge valve I18 and is discharged. The ash valve I18 adopts a star-shaped valve.
The lower end of the cyclone waste heat furnace body 19 is connected with the ash storage cylinder II 21 through an ash valve II 20. The ash valve II 20 adopts a star-shaped valve.
One end of the exhaust pipe II 26 is connected with the cyclone dust collector 11, and the other end of the exhaust pipe II passes through the furnace body 19 and the water storage tank 23 and then is communicated with the inner cavity of the furnace body 19.
An exhaust passage 22 is arranged in the furnace body 19, a water storage tank 23 is arranged along the inner wall of the furnace body 19 and the outer wall of the exhaust passage 22, the water storage tank 23 is connected with a water inlet pipe 24 arranged at the lower end of the furnace body 19, and the inlet end of an exhaust pipe II 26 is higher than the bottom end of the exhaust passage 22, so that coal gas can fully flow in the furnace body, and water in the water storage tank 23 is heated; the upper end of the water storage tank 23 is provided with a steam outlet 25. High-temperature coal gas enters the furnace body in a cyclone mode and is discharged through the exhaust passage, and when the high-temperature coal gas flows through the inner cavity of the furnace body and the exhaust passage, water in the water storage tank is heated to generate water vapor.
One end of the water vapor pipeline 27 is connected with the water vapor outlet 25, and the other end is connected with the mixing air chamber 17.
An oxygen-rich air line 28 is connected to the mixing gas chamber 17. The oxygen-enriched air is mixed with the water vapor in the mixing chamber to form a vaporizing agent, and the oxygen-enriched air is heated for the first time.
Example 2 high-efficiency low-consumption high-hydrogen fuel gas generation method
The method comprises the following steps:
1) the pulverized coal stored in the coal storage tank 1 enters the lower end of a reaction section of the coal gas generation device through a coal feeding valve 2 and a feeding port 3, and the generated coal gas rises after high-temperature heating and combustion reaction and enters a cyclone dust collector 11 through an exhaust pipe I10; the burned cinder enters a funnel-shaped grate 13, a high-temperature gasification agent supplied from an annular gas supply hole 14 continuously reacts with the cinder in the grate, and the coal ash flows out of the grate and enters an ash storage cylinder I9 through an ash discharge section, a gasification agent heating section 7, a cooling section 8 and an ash discharge valve I18 to be discharged;
2) the high-temperature coal gas entering the cyclone dust collector 11 enters the inner cavity of the furnace body 19 through the exhaust pipe II 26 after dust removal, and is exhausted through the exhaust passage 22; the dust in the cyclone dust collector 11 falls into the reaction section of the gas generating device through the dust falling pipe 12 to contact with the rising high-temperature gas, and the full temperature rise reaction is continued;
3) the high-temperature coal gas entering the furnace body 19 heats the water in the water storage tank 23, the water vapor enters the mixing air chamber 17 through the water vapor pipeline 27 and is mixed with the oxygen-enriched air entering through the oxygen-enriched air pipeline 28 to form a vaporizing agent, and the vaporizing agent is heated for the first time;
4) the heated vaporizing agent enters a vaporizing agent pipeline 16, and after being heated for the second time in the vaporizing agent heating section 7, the gas is supplied to the reaction section through the annular gas supply hole 14.
Claims (6)
1. The high-efficiency low-consumption high-hydrogen gas generation system is characterized by comprising a coal storage tank (1), a gas generation device and a waste heat utilization device;
the coal storage tank (1) is communicated with the inner cavity of the coal gas generating device through a coal feeding valve (2) and a feeding port (3);
the coal gas generating device consists of a reaction section (4), a gas supply section (5), an ash discharge section (6), a vaporizing agent heating section (7), a cooling section (8) and an ash storage cylinder I (9); an exhaust pipe I (10) is arranged at the upper end of the reaction section (4), the exhaust pipe I (10) is connected with a cyclone dust collector (11), the bottom of the cyclone dust collector (11) is communicated with the inner cavity of the reaction section (4) through a dust falling pipe (12), a slag separating disc (29) is arranged at the outlet end of the dust falling pipe (12), a plurality of dust outlet holes are formed in the slag separating disc (29), and the lower end of the slag separating disc is made into a conical shape; a funnel-shaped fire grate (13) is arranged between the reaction section (4) and the gas supply section (5); the lower end of the fire grate (13) passes through the ash discharge section (6) and then extends into the vaporizing agent heating section (7); the gas supply section (5) is provided with an annular gas supply hole (14), the annular gas supply hole (14) supplies a gasifying agent to the reaction section (4) through a plurality of branch gas passages (15), the plurality of branch gas passages (15) are distributed on the annular gas supply hole (14) in an upper layer and a lower layer, and outlets of the corresponding upper layer and lower layer of branch gas passages (15) are arranged in a stepped manner with the lower layer retracted; the vaporizing agent pipeline (16) is arranged in the vaporizing agent heating section (7), one end of the vaporizing agent pipeline is connected with the annular gas supply hole (14), the other end of the vaporizing agent pipeline penetrates through the gas generating device to be connected with the mixed gas chamber (17), and the vaporizing agent pipeline (16) is spirally arranged in the vaporizing agent heating section (7); the cooling section (8) is connected with an ash storage cylinder I (9) through an ash outlet valve I (18);
the waste heat utilization device is characterized in that the lower end of a furnace body (19) is connected with an ash storage cylinder II (21) through an ash discharge valve II (20), an exhaust passage (22) is arranged in the furnace body (19), a water storage tank (23) is arranged along the inner wall of the furnace body (19) and the outer wall of the exhaust passage (22), and the water storage tank (23) is connected with a water inlet pipe (24) arranged at the lower end of the furnace body (19); the upper end of the water storage tank (23) is provided with a steam outlet (25);
one end of an exhaust pipe II (26) is connected with the cyclone dust collector (11), the other end of the exhaust pipe II (26) penetrates through the furnace body (19) and the water storage tank (23) and then is communicated with the inner cavity of the furnace body (19), and the inlet end of the exhaust pipe II (26) is higher than the bottom end of the exhaust channel (22);
one end of the water vapor pipeline (27) is connected with the water vapor outlet (25), the other end of the water vapor pipeline is connected with the mixed gas chamber (17), and the oxygen-enriched air pipeline (28) is connected with the mixed gas chamber (17).
2. The high-efficiency low-consumption high-hydrogen gas generation system according to claim 1, wherein the outlet end of the dust falling pipe (12) is arranged at the upper part of the feed inlet (3) in the reaction section (4).
3. The high-efficiency low-consumption high-hydrogen gas generation system according to claim 1, wherein a heat-insulating layer (31) is built on the outside of the refractory layer (30) constituting the gas generation device main body.
4. The high-efficiency low-consumption high-hydrogen gas generation system according to claim 1, wherein the bottom of the reaction section (4) is tapered to correspond to the upper end of the funnel-shaped grate (13).
5. The high-efficiency low-consumption high-hydrogen gas generation system according to claim 1, wherein a cooling water layer (32) is formed along the inner wall of the cylinder in the cooling section (8).
6. The high-efficiency low-consumption high-hydrogen gas generation method of any one of the systems of claims 1-5, characterized by comprising the following steps:
1) pulverized coal stored in a coal storage tank (1) enters the lower end of a reaction section of a coal gas generation device through a coal feeding valve (2) and a feeding port (3), and the generated coal gas rises after high-temperature heating and combustion reaction and enters a cyclone dust collector (11) through an exhaust pipe I (10); the burned coal cinder enters a funnel-shaped furnace grate (13), a high-temperature gasification agent supplied from an annular gas supply hole (14) continuously reacts with the coal cinder in the furnace grate, and the coal ash flows out of the furnace grate, enters an ash storage cylinder I (9) through an ash discharge section, a gasification agent heating section (7), a cooling section (8) and an ash discharge valve I (18) and is discharged;
2) the high-temperature coal gas entering the cyclone dust collector (11) enters the inner cavity of the furnace body (19) of the waste heat utilization device through the exhaust pipe II (26) after dust removal, and is exhausted through the exhaust passage (22); dust in the cyclone dust collector (11) falls into the reaction section of the gas generation device through the dust falling pipe (12) to contact with the rising high-temperature gas, and the temperature rise reaction is continued;
3) high-temperature coal gas entering the furnace body (19) heats water in the water storage tank (23), water vapor enters the mixing air chamber (17) through the water vapor pipeline (27) and is mixed with oxygen-enriched air entering through the oxygen-enriched air pipeline (28) to form a vaporizing agent, and the oxygen-enriched air is heated;
4) the heated vaporizing agent enters a vaporizing agent pipeline (16), and after being heated in the vaporizing agent heating section (7), the gas is supplied to the reaction section through an annular gas supply hole (14).
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| FI108942B (en) * | 1998-08-25 | 2002-04-30 | Valtion Teknillinen | Method for gasification of biofuel |
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