Device, process and test system for gasifying coke powder in coke oven

Abstract

The invention discloses a coke powder gasification device for a coke oven, which comprises the coke oven, a conveying pipeline is arranged on a water seal seat at the top of the coke oven, a storage hopper and a mixer are arranged at the top of the coke oven, the bottom of the storage hopper is connected with the mixer through a coke powder pipeline, and the mixer is also connected with a steam pipeline and a compressed air pipeline. And a feeding hole of the mixer is connected with the conveying pipeline. The invention also provides a test system for coke powder gasification of the coke oven, which is used for detecting coal gas after gasification of the coke oven. The invention also provides a process for gasifying coke powder by using the coke oven, which specifically comprises the following steps: mixing coke powder, steam, compressed air or oxygen according to the ratio of 1: (5-10): (0.1-1.5), blowing the mixed coke powder into the top space of a coke oven carbonization chamber by using the pressure of the steam and the compressed air, and gasifying the coke powder by using the coke oven at the temperature of 750-850 DEG C in the top space at the final stage of coking, the carbon element in the coke powder reacts with the water vapor and the oxygen to generate hydrogen and carbon monoxide gas. The method is low in cost and simple to operate.

Description

Technical Field

[0001] The invention belongs to the field of coke powder gasification, and specifically relates to a device for gasifying coke powder in a coke oven. The invention also provides a process and a test system for gasifying coke powder in a coke oven. Background Art

[0002] Coke powder is coke powder produced by coking enterprises in the coke production process, and its composition index is basically the same as coke. Because the particle size of coke powder is small and does not meet the index requirements of metallurgical coke, a large amount of coke powder is processed cheaply. Therefore, exploring the processing technology of coke powder and improving the utilization value of coke powder are of great practical significance for improving the economic benefits of enterprises.

[0003] Coke powder gasification technology is a technology that uses fixed carbon as raw material, gasifies it under high temperature conditions with water vapor and oxygen as gasifying agents, and produces CO and H2 as the main components. Traditional gasification technology is to react in a fixed gasifier, but the process is complicated and the investment is too large. Summary of the invention

[0004] In order to overcome the defects of the prior art such as complex process and high cost, the present invention provides a coke oven gasification coke powder device which can reasonably utilize the top space of the coke oven carbonization chamber at the end of coking and is easy to operate.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: A device for gasifying coke powder in a coke oven comprises a coke oven, a conveying pipeline for spraying coke powder into a carbonization chamber is installed on a dust removal water seal seat on the top of the coke oven, a storage hopper for storing coke powder and a mixer for mixing coke powder, water vapor and compressed air are arranged on the top of the coke oven, the bottom of the storage hopper is connected to the first section of the mixer through a coke powder pipeline, the first section of the mixer is also connected to a compressed air pipeline, the second section of the mixer is connected to the water vapor pipeline, the feed port of the mixer is connected to the conveying pipeline, the mixed materials are sprayed under pressure by water vapor and compressed air into the top space of the coke carbonization chamber, so that the coke powder reacts at the top of the carbonization chamber to produce coal gas.

[0006] Furthermore, one end of the conveying pipeline is buried into the feed pipe from the mounting hole or the side of the dust removal water seal seat on the top of the coke oven, and the conveying pipeline is a stainless steel pipeline or other high temperature resistant pipeline.

[0007] Furthermore, a level meter for measuring the amount of ejected material is installed on the inner side of the storage hopper, a quantitative feeding valve is installed at the bottom of the storage hopper, and the coke powder enters the mixer after passing through the quantitative feeding valve. A first operating platform for convenient operation and observation of the feeding situation is also provided next to the storage hopper; the level meter is connected to the program control in the central control room.

[0008] Furthermore, a flow meter and a pressure gauge are installed on the water steam pipeline, and the steam in the water steam pipeline is connected to the superheated steam; the flow meter and the pressure gauge are connected to the program control in the central control room, which can be displayed on site and transmitted to the central control room with historical curves and cumulative amounts to measure the amount of steam used and the change in pressure regulation. The temperature of the superheated steam is 160-300℃.

[0009] Furthermore, a flow meter and a pressure gauge are installed on the compressed air duct, and the compressed air in the compressed air duct is connected to the heated air or oxygen; the flow meter and the pressure gauge are connected to the program control in the central control room, which can be displayed on site and transmitted to the central control room with historical curves and cumulative amounts to measure the compressed air volume used and the pressure adjustment changes. The heating temperature of the air or oxygen is 160-300℃.

[0010] Furthermore, a detachable gas outlet cooling and release test system is also installed on the furnace top riser water seal seat at the top of the coke oven; the detachable gas outlet cooling and release test system includes an ammonia cooling spray structure and a sampling and release structure, one end of the cooling spray structure is connected to the top of the furnace top riser water seal seat through a gas outlet bend, and the gas cooled by the cooling spray structure enters the sampling and release structure.

[0011] The gas outlet elbow connecting the riser and the gas outlet cooling and release test system is detachable. The elbow is connected at the end of coking to start the coke powder test. After the test, the elbow is removed to resume normal production of the coke oven.

[0012] Furthermore, a heat-insulating layer is cast inside the gas outlet elbow, one end of the gas outlet elbow is directly mounted on the second riser water seal seat, and the other end is flange-connected to the ammonia water cooling spray structure.

[0013] Preferably, the ammonia water cooling spraying structure includes an ammonia water cooler, in which a partition is vertically provided in the middle of the top of the ammonia water cooler, and ammonia water nozzles are respectively installed on both sides of the top of the partition. The coal gas is cooled from the coal gas temperature of 800°C (±50°C) to 75°C (±5°C) by spraying ammonia water. The sprayed ammonia water is laid into the coke oven tar box along the gas collecting pipe bracket through a pipeline or directly enters the gas collecting pipe through a water seal.

[0014] Furthermore, the sampling and dispersing structure includes a gas dispersing pipeline, on which a flow meter, a thermometer, a sampling point and a dispersing valve are installed, and a gas composition sampling and testing and automatic detection instrument is connected to the sampling point. The gas dispersing pipe is connected to the gas collecting pipe dispersing pipe of the coke oven, and ignition and dispersing are carried out through the gas collecting pipe dispersing pipe. The gas dispersing pipeline and the gas collecting pipe dispersing pipe are connected by a dispersing valve, and the gas composition sampling and testing and automatic detection instrument is electrically connected to the central control room. A second operating platform for convenient operation is also provided next to the sampling and dispersing structure, and a single-arm crane is also provided on the second operating platform, and the single-arm crane is connected to the top of the fixed ring on the gas dispersing pipe through a pin shaft. The gas sampling and testing pipeline and the gas dispersing pipeline are connected by a dispersing valve, so that the gas in the laboratory does not cross each other, and the component analysis does not interfere with each other; the gas composition (O2, H2, CO, CO2, N2, dust content) detection values ​​are remotely transmitted to the central control room, and there is a historical curve display value.

[0015] The coal gas produced by the reaction of coke powder at the top of the carbonization chamber directly enters the gas collecting pipe and the negative pressure pipe. An ammonia spraying device is added to the gas-liquid separator and the negative pressure pipe to reduce the dust content in the coal gas. The coal gas enters the methanol and LNG production system after purification.

[0016] The device of the present invention simplifies the operation, reduces the investment, and reasonably utilizes the original equipment of the coke oven to carry out partial transformation without changing the original function of the coke oven, so that the coke powder gasification reaches the maximum conversion rate.

[0017] The present invention also provides a process for gasifying coke powder in a coke oven, which uses the above-mentioned device and specifically includes the following steps: mixing coke powder, steam, compressed air or oxygen at a ratio of 1: (5-10): (0.1-1.5), spraying the mixed coke powder into the top space of the coke square in the coke oven carbonization chamber by using steam and compressed air pressure, and using the top space temperature of 750-850°C in the coke oven at the end of coking to make the carbon element in the coke powder react with water vapor and oxygen to generate hydrogen and carbon monoxide gas, so as to increase the content of hydrogen and carbon monoxide in coal gas and achieve the purpose of increasing the yield of methanol and LNG.

[0018] The process of the present invention is to use the top space (about 16m long, 400-500mm high, 530mm wide) and temperature (750-850℃) of the carbonization chamber as a closed space for the gasification reaction of coke powder at the end of the coking process of the coke oven, when the coke is mature and very little coal gas is produced, so that the fixed carbon in the coke powder reacts with air and water vapor at high temperature.

[0019] Chemical reaction principle: C+O2=CO2+Q CO2+C=2CO+Q H2O+C=H2+CO+Q At present, the main components of the company's coke powder are approximately: fixed carbon 86%, moisture 0.2%, ash 12.76%, volatile matter 1.0%, and sulfur 0.79%.

[0020] The process produces the highest amount of CO and H2 in the above ratios. The main components of the raw gas produced by the coke oven increase from H260% to about 62%, and CO6% to about 10%, which increases the output of methanol and LNG, the deep-processing products of coal gas. In order to improve the utilization value of coke powder, the top space of the coke oven carbonization chamber is reasonably utilized, which is easy to operate and low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings, in which: Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the disassembly test system structure; Explanation of the accompanying reference numerals: 1. coke oven, 2. carbonization chamber, 3. coke oven top, 4. first operating platform, 5. dust removal water seal seat on the top, 6. conveying pipeline, 7. mixer, 8. steam pipeline, 9. compressed air duct, 10. flow meter, 11. pressure gauge, 12. storage hopper, 13. material level meter, 14. quantitative feeding valve, 15. coke powder, 16. water seal seat of the riser on the top, 17. gas collecting pipe, 18. gas outlet elbow, 19. insulation layer, 20. ammonia cooler, 21. partition, 22. ammonia nozzle, 23. gas release pipe, 24. sampling point, 25. release valve, 26. thermometer, 27. ammonia, 28. second operating platform, 29. single-arm crane. DETAILED DESCRIPTION Example 1

[0022] like Figure 1 As shown, the device for gasifying coke powder in a coke oven of this embodiment comprises a coke oven 1, a conveying pipeline 6 for spraying coke powder 15 into a carbonization chamber 2 is installed on a dust removal water seal seat 5 on the top of the coke oven top 3, a storage hopper 12 for storing coke powder and a mixer 7 for mixing coke powder, water vapor and compressed air are arranged on the top 3 of the coke oven, the bottom of the storage hopper 12 is connected to the first section of the mixer 7 through a coke powder pipeline, the first section of the mixer 7 is also connected to a compressed air pipeline 8, the second section of the mixer 7 is connected to a water vapor pipeline 9, the feed port of the mixer 7 is connected to the conveying pipeline, and the mixed materials are pressurized and blown into the top space of the coke carbonization chamber by water vapor and compressed air, so that the coke powder 15 reacts at the top of the carbonization chamber 2 to produce coal gas.

[0023] Furthermore, one end of the conveying pipe 6 is buried in the feed pipe from the top or side of the coke oven (the feed pipe is in the top space of the carbonization chamber), and the other end of the conveying pipe 6 passes through the mounting hole on the furnace top dust removal water seal seat 5; the conveying pipe 6 is a stainless steel pipe or other high temperature resistant pipe.

[0024] Furthermore, a level meter 13 for measuring the amount of ejected material is installed on the inner side of the storage hopper 12, and a quantitative feeding valve 14 is installed at the bottom of the storage hopper 12. The coke powder 15 enters the mixer 7 after passing through the quantitative feeding valve 14. A first operating platform 4 for convenient operation and observation of the feeding situation is also provided next to the storage hopper 12; the level meter 13 is electrically connected to the central control room.

[0025] Furthermore, a flow meter 10 and a pressure gauge 11 are installed on the water steam pipe 8, and the steam in the water steam pipe 8 is connected to the superheated steam; the flow meter 10 and the pressure gauge 11 are electrically connected to the central control room, and can be displayed on site, and also transmit the historical curve and cumulative amount to the central control room to measure the amount of steam used and the change of pressure regulation. The temperature of the superheated steam is 160-300℃.

[0026] Furthermore, a flow meter 10 and a pressure gauge 11 are installed on the compressed air duct 9, and the compressed air duct 9 contains heated air or oxygen; the flow meter 10 and the pressure gauge 11 are electrically connected to the central control room, and can be displayed on site, and also transmit historical curves and cumulative amounts to the central control room to measure the compressed air volume used and the pressure adjustment changes. The heating temperature of the air or oxygen is 160-300℃. Example 2

[0027] like Figure 1 , 2 As shown, the device for gasifying coke powder in a coke oven of this embodiment comprises a coke oven 1, a conveying pipeline 6 for spraying coke powder 15 into a carbonization chamber 2 is installed on a dust removal water seal seat 5 on the top of the coke oven top 3, a storage hopper 12 for storing coke powder and a mixer 7 for mixing coke powder, water vapor and compressed air are arranged on the top 3 of the coke oven, the bottom of the storage hopper 12 is connected to the first section of the mixer 7 through a coke powder pipeline, the first section of the mixer 7 is also connected to a compressed air pipeline 8, the second section of the mixer 7 is connected to a steam pipeline, the feed port of the mixer 7 is connected to a conveying pipeline, the mixed materials are pressurized and blown into the top space of the coke carbonization chamber by water vapor and compressed air, so that the coke powder 15 reacts at the top of the carbonization chamber 2 to produce coal gas.

[0028] Furthermore, one end of the conveying pipe 6 is buried in the feed pipe from the top or side of the coke oven (the feed pipe is in the top space of the carbonization chamber), and the other end of the conveying pipe 6 passes through the mounting hole on the furnace top dust removal water seal seat 5; the conveying pipe 6 is a stainless steel pipe or other high temperature resistant pipe.

[0029] Furthermore, a level meter 13 for measuring the amount of ejected material is installed on the inner side of the storage hopper 12, and a quantitative feeding valve 14 is installed at the bottom of the storage hopper 12. The coke powder 15 enters the mixer 7 after passing through the quantitative feeding valve 14. An operating platform 4 is also provided next to the storage hopper 12 for convenient operation and observation of the feeding situation; the level meter 13 is electrically connected to the central control room.

[0030] Furthermore, a flow meter 10 and a pressure gauge 11 are installed on the water steam pipe 8, and the steam in the water steam pipe 8 is connected to the superheated steam; the flow meter 10 and the pressure gauge 11 are electrically connected to the central control room, and can be displayed on site, and also transmit the historical curve and cumulative amount to the central control room to measure the amount of steam used and the change of pressure regulation. The temperature of the superheated steam is 160-300℃.

[0031] Furthermore, a flow meter 10 and a pressure gauge 11 are installed on the compressed air duct 9, and the compressed air duct 9 contains heated air or oxygen; the flow meter 10 and the pressure gauge 11 are electrically connected to the central control room, and can be displayed on site, and also transmit historical curves and cumulative amounts to the central control room to measure the compressed air volume used and the pressure adjustment changes. The heating temperature of the air or oxygen is 160-300℃.

[0032] Furthermore, a detachable gas outlet cooling and release test system is also installed on the roof riser water seal seat 16 of the coke oven roof 3; the detachable gas outlet cooling and release test system includes an ammonia cooling spray structure and a sampling and release structure, one end of the cooling spray structure is connected to the top of the roof riser water seal seat 16 through the gas outlet elbow 18, and the gas cooled by the cooling spray structure enters the sampling and release structure. The gas outlet elbow 18 connecting the roof riser water seal seat 16 and the gas outlet cooling and release test system in the present invention is detachable, and the elbow is connected at the end of coking to start the coke powder experiment. After the test, the elbow is removed to resume normal production of the coke oven.

[0033] Furthermore, a heat insulating layer 19 is cast inside the gas outlet elbow 18, one end of the gas outlet elbow 18 is directly mounted on the furnace top riser water seal seat 16, and the other end is flange-connected to the ammonia water cooling spray structure.

[0034] Preferably, the ammonia water cooling spraying structure includes an ammonia water cooler 20, in which a partition 21 is vertically provided in the middle of the top of the ammonia water cooler 20, and ammonia water nozzles 22 are respectively installed on both sides of the top of the partition 21. The coal gas temperature of 800°C (±50°C) is cooled to 75°C (±5°C) by spraying ammonia water 27. The sprayed ammonia water 27 is laid into the coke oven tar box along the gas collecting pipe bracket through a pipeline.

[0035] Furthermore, the sampling and dispersing structure includes a gas dispersing pipe 23, on which a dispersing valve 25, a sampling point 24, and a thermometer 26 are installed. The sampling point 24 is provided with a gas composition sampling and testing and automatic detection instrument. The gas dispersing pipe is connected to the gas collecting pipe dispersing pipe of the coke oven, and ignition and dispersing are performed through the gas collecting pipe dispersing pipe. The gas dispersing pipe 23 is connected to the gas collecting pipe dispersing pipe by a dispersing valve 25, and the gas composition sampling and testing and automatic detection instrument is electrically connected to the central control room. A second operating platform 28 for convenient operation is also provided next to the sampling and dispersing structure, and a single-arm crane 29 is also provided on the second operating platform 28, and the single-arm crane 29 is connected to the top of the fixing ring on the gas dispersing pipe through a pin shaft. The gas sampling point and the gas release pipeline are connected with a release valve, so that the gas in the laboratory will not be mixed and the component analysis will not interfere with each other; the gas composition (O2, H2, CO, CO2, N2, dust) detection values ​​are transmitted remotely to the central control room, and there is a historical curve display value.

[0036] The coal gas generated by the reaction of coke powder at the top of the carbonization chamber 2 directly enters the gas collecting pipe and the negative pressure pipe. An ammonia water spraying device is added to the gas-liquid separator and the negative pressure pipe to reduce the dust content in the coal gas. The coal gas enters the methanol and LNG production system after purification.

[0037] The device of the present invention simplifies the operation, reduces the investment, and reasonably utilizes the original equipment of the coke oven to carry out partial transformation without changing the original function of the coke oven, so that the coke powder gasification reaches the maximum conversion rate. Example 3

[0038] This embodiment provides a process for gasifying coke powder in a coke oven, using the above-mentioned device, specifically including the following steps: mixing coke powder, steam, compressed air or oxygen at a flow rate of 1:5:0.1, spraying the mixed coke powder into the top space of the coke square of the coke oven carbonization chamber by using steam and compressed air pressure, and using the top space temperature of 750°C at the end of coking to make the carbon element in the coke powder react with water vapor and oxygen to generate hydrogen and carbon monoxide gas, so as to increase the content of hydrogen and carbon monoxide in coal gas and achieve the purpose of increasing the yield of synthesis gas.

[0039] The process of the present invention is to use the top space of the carbonization chamber, which is about 16m long, 400mm high, 530mm wide and 750°C in temperature, as a closed space for the gasification reaction of coke powder at the end of the coking process in the coke oven, when the coke is mature and very little coal gas is produced, so that the fixed carbon in the coke powder reacts with air and water vapor at high temperature. Example 4

[0040] This embodiment provides a process for gasifying coke powder in a coke oven, using the above-mentioned device, specifically including the following steps: mixing coke powder, steam, compressed air or oxygen at a flow rate of 1:7:1, spraying the mixed coke powder into the top space of the coke square of the coke oven carbonization chamber by using steam and compressed air pressure, and using the top space temperature of 800°C at the end of coking to make the carbon element in the coke powder react with water vapor and oxygen to generate hydrogen and carbon monoxide gas, so as to increase the content of hydrogen and carbon monoxide in coal gas and achieve the purpose of increasing the yield of synthesis gas.

[0041] The process of the present invention is to use the top space of the carbonization chamber with a length of 16m, a height of 450mm, a width of 530mm and a temperature of 800°C as a closed space for the gasification reaction of coke powder at the end of the coking process in the coke oven, when the coke is mature and very little coal gas is produced, so that the fixed carbon in the coke powder reacts with air and water vapor at high temperature. Example 5

[0042] This embodiment provides a process for gasifying coke powder in a coke oven, using the above-mentioned device, specifically including the following steps: mixing coke powder, steam, compressed air or oxygen at a flow rate of 1:10:1.5, spraying the mixed coke powder into the top space of the coke square of the coke oven carbonization chamber by using steam and compressed air pressure, and using the top space temperature of 850°C at the end of coking to make the carbon element in the coke powder react with water vapor and oxygen to generate hydrogen and carbon monoxide gas, so as to increase the content of hydrogen and carbon monoxide in coal gas and achieve the purpose of increasing the yield of synthesis gas.

[0043] The process of the present invention is to use the top space of the carbonization chamber with a length of 16m, a height of 500mm, a width of 530mm and a temperature of 850°C as a closed space for the gasification reaction of coke powder at the end of the coking process in the coke oven, when the coke is mature and very little coal gas is produced, so that the fixed carbon in the coke powder reacts with air and water vapor at high temperature.

[0044] At present, the main components of the company's coke powder are approximately: fixed carbon 86%, moisture 0.2%, ash 12.76%, volatile matter 1.0%, and sulfur 0.79%.

[0045] Chemical reaction principle: C+O2=CO2+Q CO2+C=2CO+Q H2O+C=H2+CO+Q Test plan and data: Unit: Kg / h

[0046] The process produces the highest amounts of CO and H2 in the above ratios. The main components of the raw gas produced by the coke oven increase from H260% to about 62%, and CO6% to about 10%, thereby increasing the output of methanol and LNG, the deep-processing products of coal gas.

[0047] The coke oven described in the present invention is a ramming coke oven or a top-loading coke oven.

Claims

1. A device for gasifying coke powder in a coke oven, comprising a coke oven, characterized in that: A conveying pipeline for spraying coke powder into the carbonization chamber is installed on the top dust removal water seal seat of the coke oven top, and a storage hopper for storing coke powder and a mixer for mixing coke powder, water vapor and compressed air are arranged on the top of the coke oven. The bottom of the storage hopper is connected to the first section of the mixer through a coke powder pipeline, the first section of the mixer is also connected to a compressed air pipeline, the second section of the mixer is connected to the water vapor pipeline, and the feed port of the mixer is connected to the conveying pipeline. The mixed materials are sprayed under pressure by water vapor and compressed air into the top space of the coke carbonization chamber, so that the coke powder reacts at the top of the carbonization chamber to produce coal gas.

2. The device for gasifying coke powder in a coke oven according to claim 1, characterized in that: One end of the conveying pipeline is buried in the feed pipe from the top or side of the coke oven, and the other end of the conveying pipeline passes through the installation hole on the furnace top dust removal water seal seat; the conveying pipeline is a stainless steel pipeline or other high temperature resistant pipeline.

3. The device for gasifying coke powder in a coke oven according to claim 1, characterized in that: A level meter for measuring the amount of ejected material is installed inside the storage hopper, and a quantitative feeding valve is installed at the bottom of the storage hopper. The coke powder enters the mixer after passing through the quantitative feeding valve. A first operating platform for convenient operation and observation of the feeding situation is also provided next to the storage hopper. The level meter is connected to the program control in the central control room.

4. The device for gasifying coke powder in a coke oven according to claim 1, characterized in that: A flow meter and a pressure gauge are installed on the water steam pipeline, and the steam in the water steam pipeline is superheated steam; the flow meter and the pressure gauge are connected to the program control in the central control room; the temperature of the superheated steam is 160-300°C.

5. The device for gasifying coke powder in a coke oven according to claim 1, characterized in that: A flow meter and a pressure gauge are installed on the compressed air duct, and the compressed air in the compressed air duct is connected to the heated oxygen or air; the flow meter and the pressure gauge are connected to the program control in the central control room; the heating temperature of the oxygen or air is 160-300°C.

6. The device for gasifying coke powder in a coke oven according to claim 1, characterized in that: A detachable gas outlet cooling and release test system is also installed on the furnace top riser water seal seat at the top of the coke oven; the detachable gas outlet cooling and release test system includes an ammonia cooling spray structure and a sampling and release structure, one end of the ammonia cooling spray structure is connected to the top of the furnace top riser water seal seat through a gas outlet bend, and the gas cooled by the cooling spray structure enters the sampling and release structure.

7. The device for gasifying coke powder in a coke oven according to claim 6, characterized in that: The gas outlet elbow is cast with a heat insulation layer inside, one end of the gas outlet elbow is directly installed on the second riser water seal seat, and the other end is flange-connected to the ammonia water cooling spray structure.

8. The device for gasifying coke powder in a coke oven according to claim 7, characterized in that: The ammonia water cooling and spraying structure comprises an ammonia water cooler, in which a partition is vertically arranged in the middle of the top of the ammonia water cooler, and ammonia water nozzles are respectively installed on both sides of the top of the partition. The coal gas is cooled from the coal gas temperature of 800°C (±50°C) to 75°C (±5°C) by spraying ammonia water. The sprayed ammonia water is laid into the coke oven tar box along the gas collecting pipe bracket through a pipeline or directly enters the gas collecting pipe after water sealing.

9. The device for gasifying coke powder in a coke oven according to claim 6, characterized in that: The sampling and releasing structure comprises a gas releasing pipe, on which a flow meter, a sampling point, a thermometer and a releasing valve are installed, the sampling point is equipped with a gas composition sampling and testing and automatic detection instrument, the gas releasing pipe is connected to the gas collecting pipe releasing pipe of the coke oven, ignited and released through the gas collecting pipe releasing pipe, the gas releasing pipe and the gas collecting pipe releasing pipe are connected with the releasing valve, a second operating platform for convenient operation and observation of the loading situation is also provided next to the sampling and releasing structure, a single-arm crane is also provided on the second operating platform, the single-arm crane is connected to the top of the fixing ring on the gas releasing pipe through a pin shaft; the gas composition sampling and testing and automatic detection instrument is connected to the program control in the central control room.

10. The device for gasifying coke powder in a coke oven according to claim 1, characterized in that: The coke oven is a ramming coke oven or a top-loading coke oven.

11. A process for gasifying coke powder in a coking furnace, using the device according to any one of claims 1 to 10, specifically comprising the following steps: Coke powder, water vapor, compressed air or oxygen are mixed at a flow rate of 1: (5-10): (0.1-1.5), and the mixed coke powder is sprayed into the top space of the coke cube in the carbonization chamber of the coke oven using water vapor and compressed air pressure. The top space temperature of the coke oven at the end of coking is 750-850°C, so that the carbon element in the coke powder reacts with water vapor and oxygen to generate hydrogen and carbon monoxide gas.

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