A regenerative internal tar cracking gasification furnace device

Abstract

This invention discloses a regenerative tar internal pyrolysis gasification furnace device, comprising a hydraulic piston feeding system, a pyrolysis gasification furnace, a heat conduction system, a heat storage system, a heat exchange system, and a gas-phase catalytic system connected to the heat exchange system. The pyrolysis gasification furnace includes a furnace body and a slag discharge system. The furnace body includes a hopper, a pyrolysis gasification chamber, and a jacketed cavity. The hydraulic piston feeding system is connected to the hopper, which is connected to the pyrolysis gasification chamber. The slag discharge system is located at the bottom of the furnace body. The heat conduction system and the gas-phase catalytic system are located outside the pyrolysis gasification chamber. The heat storage system includes a heat storage material layer placed within the jacketed cavity. The inlet of the gas-phase catalytic system is connected to the upper part of the pyrolysis gasification chamber, and its outlet extends outside the furnace. The heat conduction system is connected to the heat storage material layer. This device can reduce heat waste, improve the temperature field distribution inside the furnace, increase the overall energy utilization rate, remove tar content from combustible gas, and improve gasification efficiency and calorific value of the gas.

Description

Technical Field

[0001] This invention relates to the technical field of combustible solid waste heat treatment equipment, and in particular to a regenerative tar internal cracking gasification furnace device. Background Technology

[0002] Combustible solid wastes such as municipal solid waste, general industrial solid waste, agricultural and forestry waste, and municipal sludge are vast "mineral resources" with high value for resource and energy utilization. Pyrolysis gasification technology can convert combustible solid wastes into biomass combustible gas, effectively reducing the consumption of fossil fuels. However, due to factors such as material composition, gasification conditions, and gasification processes, combustible gas generally contains a significant amount of tar. The presence of tar greatly reduces gasification efficiency; the energy from tar products typically accounts for 5-15% of the total energy, which is difficult to utilize at lower temperatures, resulting in significant energy waste. Furthermore, tar readily condenses into a viscous liquid at lower temperatures, dissolving with water, fly ash, and other substances, clogging gas pipelines. Tar cleaning is time-consuming and ineffective, significantly reducing the operating time of gasification equipment. In addition, uneven temperature distribution within the furnace often occurs during gasification, leading to incomplete gasification reactions. Excessively high combustible gas temperatures result in unrecovered energy waste, severe heat loss, and low utilization rates, negatively impacting the overall effectiveness of the pyrolysis gasification reaction. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a scientific, reasonable, and energy-efficient regenerative tar internal cracking gasification furnace device to reduce heat waste in the furnace, improve uneven temperature field distribution in the furnace, enhance the comprehensive energy utilization rate, remove tar content from combustible gas, and improve gasification efficiency and calorific value of the gas.

[0004] This invention is achieved through the following technical solution: a regenerative tar internal pyrolysis gasification furnace device, comprising a hydraulic piston feeding system, a pyrolysis gasification furnace, a heat conduction system, a heat storage system, a heat exchange system, and a gas-phase catalytic system connected to the heat exchange system; the pyrolysis gasification furnace includes a pyrolysis gasification furnace body and a slag discharge system, the pyrolysis gasification furnace body includes a hopper, a pyrolysis gasification chamber, and a jacketed cavity, the hopper being located at the top of the pyrolysis gasification furnace body, the pyrolysis gasification chamber being located inside the pyrolysis gasification furnace body, and the space between the outer wall of the pyrolysis gasification chamber and the inner wall of the pyrolysis gasification furnace body being the jacketed cavity; the hydraulic piston feeding system... The discharge port is connected to the feed inlet of the silo, and the discharge port of the silo is connected to the upper feed inlet of the pyrolysis gasification chamber. The slag discharge system is located at the bottom of the pyrolysis gasification furnace body and aligned with the lower discharge port of the pyrolysis gasification chamber. The heat conduction system is located in the drying pyrolysis zone of the upper section outside the pyrolysis gasification chamber. The heat storage system includes a heat storage material layer, which is placed in the interlayer cavity. The gas phase catalytic system is arranged in a rotating redox zone outside the pyrolysis gasification chamber, with its inlet connected to the upper section inside the pyrolysis gasification chamber and its outlet extending outside the pyrolysis gasification furnace. The heat conduction system is connected to the heat storage material layer.

[0005] The pyrolysis gasification chamber has a cylindrical structure, with its bottom extending outwards and connected to the interior of the pyrolysis gasification furnace. The ash removal system includes a grate and an ash chamber, with the ash chamber communicating with the pyrolysis gasification chamber. The grate is located inside the ash chamber and aligned with the lower discharge port of the pyrolysis gasification chamber. A lower furnace door is provided at the bottom of the ash chamber. A thermometer and a pressure gauge are installed inside the pyrolysis gasification chamber, and a pressure gauge is installed in the interlayer cavity. Combustible solid waste undergoes drying, pyrolysis, gasification, and combustion reactions within the pyrolysis gasification chamber. The gasification residue enters the ash chamber from the grate and is then discharged from the ash chamber through the lower furnace door.

[0006] The hydraulic piston feeding system includes a feeding system housing, within which a hydraulic cylinder, a pusher piston box, and a waste feeding hopper are installed. The waste feeding hopper is installed on the top of the feeding system housing and communicates with the interior of the housing. The pusher piston box is mounted on the telescopic rod of the hydraulic cylinder and can be controlled by it to slide along the interior of the feeding system housing. The discharge port of the hydraulic piston feeding system is connected to the feed port of the silo. The hydraulic piston feeding system is used to compress combustible solid waste and deliver it to the pyrolysis gasification chamber, reducing material volume and preventing smoke and gas leakage, thus achieving a sealing effect on the furnace body.

[0007] The gas-phase catalytic system includes a gas pipeline that spirals downwards within the oxidation-reduction zone outside the pyrolysis gasification chamber. The inlet of the upper section of the gas pipeline connects to the upper part of the pyrolysis gasification chamber via a first gas outlet pipeline. The lower section of the gas pipeline extends upwards through the heat storage material layer within the interlayer cavity and then extends outwards from the pyrolysis gasification furnace body at the upper section, forming a second gas outlet pipeline. The gas pipeline contains a porous media catalyst. Passing through the heat storage material layer, the gas pipeline absorbs the released heat and combustion heat from the heat storage material. The porous media catalyst within the gas pipeline acts as a filter, heat storage agent, and catalyst, enabling further deep cracking of the tar and purification of the combustible gas.

[0008] The heat storage system also includes a steam inlet pipe, an inlet check valve, a steam exhaust pipe, an exhaust check valve, and a steam nozzle. The steam nozzle is located within the heat storage material layer. One end of the steam inlet pipe is connected to an external steam supply device, and the other end passes through the interlayer cavity and connects to the steam nozzle. The inlet check valve is installed on the steam inlet pipe, and the exhaust check valve is installed on the steam exhaust pipe. The heat storage system is located in the redox zone of the interlayer cavity. By changing the temperature field inside the pyrolysis gasifier, the heat storage and release reactions of steam and chemical heat storage materials in the heat storage system are controlled, maintaining a stable reaction temperature inside the gasifier and deep cracking of tar in the gas phase products.

[0009] The heat conduction system includes heat-conducting fins and heat-conducting pipes. The heat-conducting fins are arranged around the upper part of the drying pyrolysis zone outside the pyrolysis gasification chamber, and the heat-conducting fins are connected to the heat storage material layer through the heat-conducting pipes. The heat-conducting fins absorb heat released from the heat storage material layer and the gas pipeline through the heat-conducting pipes to increase the temperature of the drying pyrolysis zone.

[0010] The heat exchange system includes heat exchangers and circulating water pipes. The pyrolysis gasification furnace body is also equipped with an air inlet pipe, one end of which passes sequentially through the pyrolysis gasification furnace body and the grate. The air outlet of the air inlet pipe is aligned with the pyrolysis gasification chamber. Both the second gas outlet pipe and the air inlet pipe are equipped with the heat exchangers, and the two heat exchangers are connected by the circulating water pipe. The steam exhaust pipe inlet is located within the heat storage material layer, and its outlet is connected to the air inlet pipe. The heat exchange system is placed on the second gas outlet pipe and the air inlet pipe and connected via circulating water pipes. The heat from the second gas outlet pipe is circulated through the working fluid water in the heat exchange system, heating the air in the air inlet pipe initially, and then, after secondary heating by ash and slag, it is sent to the pyrolysis gasification furnace as a gasifying agent for residual carbon combustion.

[0011] A thermometer is installed inside the interlayer cavity.

[0012] The outer surface of the pyrolysis gasification furnace is covered with heat-insulating cotton, which is made of aluminum silicate fiber; the temperature range of the pyrolysis gasification chamber is controlled between 300℃ and 800℃.

[0013] The heat storage material of the heat storage material layer is a ternary inorganic salt, which is at least one of KNO3-NaNO2-NaNO3 and Li2CO3-K2CO3-Na2CO3; the heat storage material layer adopts a honeycomb structure or a mesh structure.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This device regulates the temperature inside the pyrolysis gasification furnace through the heat storage and release reaction of the heat storage material layer, solving the problem of unstable temperature inside the pyrolysis gasification furnace; by setting up a heat conduction system and a heat exchange system inside the furnace, it solves the problems of uneven temperature distribution inside the furnace and reduces energy loss during gasification; by using a built-in tar catalyst, it performs deep cracking and filtration of tar in the gas, reducing the tar content in the combustible gas and improving gasification efficiency and calorific value of the gas; This device has the characteristics of high gas conversion rate, low tar content and easy gas production; This device reduces heat waste, improves the temperature field distribution inside the furnace and improves the comprehensive energy utilization rate, removes tar content from the combustible gas, and improves gasification efficiency and calorific value of the gas. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the hydraulic piston feeding system according to an embodiment of the present invention.

[0017] The following are the meanings of the labels in the attached diagram: 1. Upper furnace door; 2. Feed inlet of silo; 3. Silo; 4. Upper feed inlet; 5. First gas outlet pipe; 6. Gas pipe; 7. Heat-conducting fins; 8. Heat storage material layer; 9. Steam inlet pipe; 10. Inlet check valve; 11. Steam nozzle; 12. Steam outlet; 13. Air outlet; 14. Grate; 15. Second gas outlet pipe; 16. Heat exchanger; 17. Circulating water pipe; 18. Catalyst; 19. Steam exhaust pipe; 20. Air inlet pipe; 21. Ash chamber; 22. Pressure gauge; 23. Thermometer; 24. Lower furnace door; 25. Insulation cotton; 26. Heat-conducting pipe; 27. Pyrolysis gasification chamber; 28. Pusher piston box; 29. ​​Waste feed hopper; 30. Compressed fuel; 31. Hydraulic cylinder. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Example

[0020] See Figures 1 to 2This invention relates to a regenerative tar internal pyrolysis gasification furnace device, comprising a hydraulic piston feeding system, a pyrolysis gasification furnace, a heat conduction system, a heat storage system, a heat exchange system, and a gas-phase catalytic system connected to the heat exchange system. The pyrolysis gasification furnace includes a pyrolysis gasification furnace body and a slag discharge system. The pyrolysis gasification furnace body includes a hopper 3, a pyrolysis gasification chamber 27, and a jacketed cavity. The hopper 3 is located at the top of the pyrolysis gasification furnace body, and the pyrolysis gasification chamber 27 is located inside the pyrolysis gasification furnace body. The space between the outer wall of the pyrolysis gasification chamber 27 and the inner wall of the pyrolysis gasification furnace body is the jacketed cavity. The outlet of the hydraulic piston feeding system is connected to the pyrolysis gasification furnace body. The feed inlet 2 of the pyrolysis gasification chamber is connected, and the discharge outlet of the pyrolysis gasification chamber 3 is connected to the upper feed inlet 4 of the pyrolysis gasification chamber 27. The slag discharge system is located at the bottom of the pyrolysis gasification furnace body and is aligned with the lower discharge outlet of the pyrolysis gasification chamber 27. The heat conduction system is set in the drying pyrolysis zone of the upper section outside the pyrolysis gasification chamber 27. The heat storage system includes a heat storage material layer 8, which is placed in the interlayer cavity. The gas phase catalytic system is set in the oxidation-reduction zone outside the pyrolysis gasification chamber 27. Its inlet is connected to the upper section inside the pyrolysis gasification chamber 27, and its outlet extends outside the pyrolysis gasification furnace. The heat conduction system is connected to the heat storage material layer 8.

[0021] The pyrolysis gasification chamber 27 has a cylindrical structure, with its bottom extending outwards and connected to the interior of the pyrolysis gasification furnace. The ash discharge system includes a grate 14 and an ash chamber 21. The ash chamber 21 is connected to the pyrolysis gasification chamber 27, and the grate 14 is located inside the ash chamber 21 and aligned with the lower discharge port of the pyrolysis gasification chamber 27. A lower furnace door 24 is opened at the bottom of the ash chamber 21. A thermometer 23 and a pressure gauge 22 are installed inside the pyrolysis gasification chamber 27, and a pressure gauge 22 is installed in the interlayer cavity. Combustible solid waste undergoes drying, pyrolysis, gasification, and combustion reactions inside the pyrolysis gasification chamber 27. The gasification residue enters the ash chamber 21 from the grate 14 and is then discharged from the ash chamber 21 through the lower furnace door 24.

[0022] The hydraulic piston feeding system includes a feeding system housing, within which a hydraulic cylinder 31, a pusher piston housing 28, and a waste feed hopper 29 are installed. The waste feed hopper 29 is installed on the top of the feeding system housing and communicates with the interior of the housing. The pusher piston housing 28 is mounted on the telescopic rod of the hydraulic cylinder 31 and can be controlled by it to slide along the interior of the feeding system housing. The discharge port of the hydraulic piston feeding system is connected to the feed port 2 of the silo. The hydraulic piston feeding system is used to compress combustible solid waste and send it into the pyrolysis gasification chamber 27 to reduce the volume of the material and prevent smoke and gas leakage, thus achieving a sealing effect on the furnace body. The combustible solid waste is compressed in volume under the action of the pusher piston housing 28 pushed by the hydraulic cylinder 31. In detail, combustible solid waste enters the feeding system through the waste feed hopper 29. The hydraulic cylinder 31 pushes the pusher piston box 28 to compress the incoming material and reduce its volume within the limited compression chamber, forming compressed fuel 30. At this time, the feed inlet of the gasifier hopper 3 is closed. The compressed fuel 30 and the feed inlet of the hopper 3 together form a barrier to seal the furnace body. In this embodiment, the top of the hopper 3 is provided with an upper furnace door 1.

[0023] The gas-phase catalytic system includes a gas pipeline 6, which is spirally laid from top to bottom in the oxidation-reduction zone outside the pyrolysis gasification chamber 27. The inlet of the upper section of the gas pipeline 6 is connected to the upper part of the pyrolysis gasification chamber 27 through the first gas outlet pipeline 5. The lower section of the gas pipeline 6 extends from bottom to top through the heat storage material layer 8 in the interlayer cavity and then extends out of the pyrolysis gasification furnace body at the upper part of the furnace body to form the second gas outlet pipeline 15. The gas pipeline 6 is filled with a porous media catalyst 18. The gas pipeline 6 passes through the heat storage material layer 8 to absorb the heat released and combustion heat of the heat storage material. The porous media catalyst 18 inside the gas pipeline 6 plays a role in filtration, heat storage, and catalysis, further cracking the tar into combustible gas and purifying the combustible gas.

[0024] The heat storage system also includes a steam inlet pipe 9, an inlet check valve 10, a steam exhaust pipe 19, an exhaust check valve, and a steam nozzle 11. The steam nozzle 11 is located within the heat storage material layer 8. One end of the steam inlet pipe 9 is connected to an external steam supply device, and the other end passes through the interlayer cavity and connects to the steam nozzle 11. The inlet check valve 10 is installed on the steam inlet pipe 9, and the exhaust check valve is installed on the steam exhaust pipe 19. The heat storage system is located in the redox zone of the interlayer cavity. By changing the temperature field inside the pyrolysis gasifier, the heat storage and release reactions of steam and chemical heat storage materials in the heat storage system are controlled, maintaining the stability of the reaction temperature inside the gasifier and the deep cracking of tar in the gas phase products.

[0025] The heat conduction system includes heat-conducting fins 7 and heat-conducting pipes 26. The heat-conducting fins 7 are arranged around the upper part of the drying pyrolysis zone outside the pyrolysis gasification chamber 27. The heat-conducting fins 7 are connected to the heat storage material layer 8 through the heat-conducting pipes 26. The heat-conducting fins 7 absorb the heat released by the heat storage material layer 8 and the gas pipeline 6 through the heat-conducting pipes 26 to increase the temperature of the drying pyrolysis zone.

[0026] The heat exchange system includes a heat exchanger 16 and a circulating water pipe 17. The pyrolysis gasification furnace body is also equipped with an air inlet pipe 20, one end of which passes sequentially through the pyrolysis gasification furnace body and the grate 14. The air outlet 13 of the air inlet pipe 20 is aligned with the pyrolysis gasification chamber 27. Both the second gas outlet pipe 15 and the air inlet pipe 20 are equipped with heat exchangers 16, and the two heat exchangers 16 are connected by the circulating water pipe 17. The inlet of the steam exhaust pipe 19 (i.e., the steam outlet 12 of the steam exhaust pipe 19) is located within the heat storage material layer 8, and its outlet is connected to the air inlet pipe 20. The heat exchange system is placed on the second gas outlet pipe 15 and the air inlet pipe 20 and connected via a circulating water pipeline. The heat from the second gas outlet pipe 15 is circulated through the working fluid water in the heat exchange system, heating the air in the air inlet pipe 20 initially. After being discharged through the steam pipe, the air is reheated by the ash residue in the ash chamber 21 and sent to the pyrolysis gasification furnace as a gasifying agent for the combustion of residual carbon.

[0027] A thermometer 23 is installed inside the interlayer cavity.

[0028] The outer surface of the pyrolysis gasification furnace is covered with thermal insulation cotton 25, which is made of aluminum silicate fiber; the temperature range of the pyrolysis gasification chamber 27 is controlled between 300℃ and 800℃.

[0029] The heat storage material of the heat storage material layer 8 is a ternary inorganic salt, which is at least one of KNO3-NaNO2-NaNO3 and Li2CO3-K2CO3-Na2CO3; the heat storage material layer 8 adopts a honeycomb structure or a mesh structure.

[0030] In this embodiment, the grate 14 is existing equipment, so no specific structural analysis is required. The grate 14 refers to the component in a boiler or industrial furnace that holds solid fuel and enables its effective combustion. The grate can be of various shapes, including straight and irregular types, and the grate shape used varies depending on the furnace. The tower grate is the most representative irregular type and is widely used in furnaces. In this device, the slag on the grate 14 rotates and falls into the ash chamber 21, finally being discharged from the bottom furnace door 24.

[0031] In this embodiment, the combustible gas generated by the gasifier enters the gas pipeline 6 of the gas phase catalytic system through the first gas outlet pipeline 5. In the gas pipeline 6, the tar is catalyzed by the catalyst 18 and decomposed into small-molecule non-condensable combustible gas by absorbing the heat released from the combustion zone and the heat storage material layer 8. The generated gasification residue enters the ash chamber 21 from the grate 14, and then is discharged from the ash chamber 21 through the lower furnace door 24.

[0032] The heat storage material layer 8 connects the steam inlet pipe 9 and the steam outlet pipe. The gas pipeline 6 is connected to the first gas outlet pipe 5 at the top of the pyrolysis gasifier. After circling the combustion zone of the gasifier, the gas pipeline 6 passes through the heat storage material layer 8 and then connects to the second gas outlet pipe 15 at the top of the pyrolysis gasifier.

[0033] Open the upper feed port 4 of the pyrolysis gasification chamber 27, and the compressed material in the hopper 3 is fed into the pyrolysis gasification chamber 27. Close the lower furnace door 24. The material is fed into the pyrolysis gasification chamber 27, and then close the upper feed port 4 of the pyrolysis gasification chamber 27. The gasifying agent is a mixture of heated air and water vapor, which is fed into the pyrolysis gasification chamber 27 from the bottom of the furnace. The material undergoes drying, pyrolysis, gasification, and combustion processes sequentially in the pyrolysis gasification chamber 27. The generated combustible gas is discharged from the first gas outlet pipe 5 of the pyrolysis gasification chamber 27. The tar in the combustible gas in the gas pipe 6 absorbs the heat released by the combustion zone and the heat storage system, and is catalytically cracked by the catalyst 18 to generate high-calorific-value combustible gas, which is discharged from the second gas outlet pipe 15. The heat carried by the discharged combustible gas is used to heat the air in the air inlet pipe 20 through the heat exchange system.

[0034] This device monitors the temperature change of the pyrolysis gasification chamber 27 using thermometer 23. The heat storage system performs heat storage and release reactions to maintain a stable temperature field inside the gasifier. When the temperature inside the gasifier is too low, the inlet check valve 10 connected to the heat storage system is opened. Water vapor mixes with the heat storage material layer 8 through the water vapor nozzle 11, resulting in an exothermic reaction. At this time, the exhaust check valve is closed. Most of the released heat is used for pyrolysis gasification and tar cracking in the gas pipeline 6. A small portion of the heat is absorbed by the heat-conducting fins 7 installed on the upper part of the pyrolysis gasifier, increasing the temperature of the drying pyrolysis zone of the gasifier. When the temperature inside the pyrolysis gasifier is too high, the inlet check valve 10 connected to the heat storage system is closed. The heat storage material layer 8 and the gas pipeline 6 in the heat storage system absorb the excess heat inside the pyrolysis gasifier. At this time, the exhaust check valve is opened to release the water vapor. The combustible gas produced by gasification is discharged from the gasification furnace through the first gas outlet pipe 5. The gas pipe 6 is coiled and laid in the oxidation-reduction zone on the outer wall of the pyrolysis gasification chamber 27 and passes through the heat storage material layer 8. The heat storage material layer 8 absorbs or releases heat to the gas pipe 6 through heat conduction and heat radiation. The porous media catalyst 18 installed inside the gas pipe 6 causes some of the tar to be deeply cracked into combustible gas, which is discharged through the second gas outlet pipe 15.

[0035] The heat from the combustible gas in the second gas outlet pipe 15 is used to heat the air in the air inlet pipe 20 through the heat exchanger 16 in the heat exchange system and the flowing water in the circulating water pipe 17. The heated air and the discharged water vapor are then heated a second time by the ash residue in the ash chamber 21 and sent from the bottom of the furnace to the pyrolysis gasification chamber 27 as a gasifying agent. The gasifying agent spray outlet (i.e., air outlet 13) is located in the middle of the combustion zone of the pyrolysis gasification chamber 27 and is used for residual carbon combustion and gasification. The generated gasified ash residue enters the ash chamber 21 from the grate 14 and is then discharged from the ash chamber 21 through the lower furnace door 24.

[0036] The above detailed description is a specific description of feasible embodiments of the present invention. These embodiments are not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the present invention should be included in the patent scope of this case.

Claims

1. A regenerative internal tar cracking gasification furnace device, characterized in that: The system includes a hydraulic piston feeding system, a pyrolysis gasification furnace, a heat conduction system, a heat storage system, a heat exchange system, and a gas-phase catalytic system connected to the heat exchange system. The pyrolysis gasification furnace includes a pyrolysis gasification furnace body and a slag discharge system. The pyrolysis gasification furnace body includes a hopper (3), a pyrolysis gasification chamber (27), and a jacketed cavity. The hopper (3) is located at the top of the pyrolysis gasification furnace body, and the pyrolysis gasification chamber (27) is located inside the pyrolysis gasification furnace body. The space between the outer wall of the pyrolysis gasification chamber (27) and the inner wall of the pyrolysis gasification furnace body is the jacketed cavity. The outlet of the hydraulic piston feeding system is connected to the inlet (2) of the hopper, and the outlet of the hopper (3) is connected to the upper inlet (4) of the pyrolysis gasification chamber (27). The slag discharge system... The heat conduction system is located at the bottom of the pyrolysis gasification furnace body and aligned with the lower discharge port of the pyrolysis gasification chamber (27); the heat conduction system is located in the drying pyrolysis zone of the upper section outside the pyrolysis gasification chamber (27); the heat storage system includes a heat storage material layer (8), which is placed in the interlayer cavity; the gas phase catalytic system is spirally arranged in the oxidation-reduction zone outside the pyrolysis gasification chamber (27), its inlet is connected to the upper section inside the pyrolysis gasification chamber (27), and its outlet extends outside the pyrolysis gasification furnace; the heat conduction system is connected to the heat storage material layer (8); the pyrolysis gasification chamber (27) is a cylindrical structure, its bottom extends outward and is connected to the inside of the pyrolysis gasification furnace body; the slag discharge system includes a grate (14) and an ash chamber (21). The ash chamber (21) is connected to the pyrolysis gasification chamber (27), and the grate (14) is located in the ash chamber (21) and aligned with the lower discharge port of the pyrolysis gasification chamber (27); a lower furnace door (24) is provided at the bottom of the ash chamber (21); a thermometer (23) and a pressure gauge (22) are provided in the pyrolysis gasification chamber (27), and a pressure gauge (22) is provided in the interlayer cavity; the gas phase catalytic system includes a gas pipeline (6), which is coiled from top to bottom in the oxidation-reduction zone outside the pyrolysis gasification chamber (27). The inlet of the upper section of the gas pipeline (6) is connected to the upper section inside the pyrolysis gasification chamber (27) through the first gas outlet pipeline (5), and the lower section of the gas pipeline (6) is connected to the upper section inside the pyrolysis gasification chamber (27). The gas storage system extends from bottom to top through the heat storage material layer (8) and extends out of the pyrolysis gasification furnace body at the upper section of the furnace body to form a second gas outlet pipe (15); the gas pipe (6) is filled with a porous medium catalyst (18); the heat storage system also includes a steam inlet pipe (9), an inlet check valve (10), a steam exhaust pipe (19), an exhaust check valve, and a steam nozzle (11); the steam nozzle (11) is located in the heat storage material layer (8), one end of the steam inlet pipe (9) is connected to an external steam supply device, and the other end is inserted into the interlayer cavity and connected to the steam nozzle (11); the inlet check valve (10) is installed on the steam inlet pipe (9);The exhaust check valve is installed on the steam exhaust pipe (19); the heat storage system is placed in the redox zone of the interlayer cavity, and controls the heat storage and release reactions of steam and chemical heat storage materials in the heat storage system by changing the temperature field inside the pyrolysis gasifier, thereby maintaining the stability of the reaction temperature inside the gasifier and the deep cracking of tar in the gas phase products.

2. The regenerative internal tar cracking gasification furnace device according to claim 1, characterized in that: The hydraulic piston feeding system includes a feeding system housing, in which a hydraulic cylinder (31), a pusher piston box (28), and a waste hopper (29) are installed. The waste hopper (29) is installed on the top of the feeding system housing and communicates with the inside of the housing. The pusher piston box (28) is installed on the telescopic rod of the hydraulic cylinder (31) and can be controlled by it to slide along the inside of the feeding system housing. The outlet of the hydraulic piston feeding system is connected to the hopper inlet (2).

3. The regenerative internal tar cracking gasification furnace device according to claim 1, characterized in that: The heat conduction system includes heat conduction fins (7) and heat conduction pipes (26). The heat conduction fins (7) are arranged around the drying pyrolysis zone on the upper part of the outside of the pyrolysis gasification chamber (27). The heat conduction fins (7) are connected to the heat storage material layer (8) through the heat conduction pipes (26).

4. The regenerative internal tar cracking gasification furnace device according to claim 1, characterized in that: The heat exchange system includes a heat exchanger (16) and a circulating water pipe (17); the pyrolysis gasification furnace body is also equipped with an air inlet pipe (20), one end of which passes through the pyrolysis gasification furnace body and the grate (14) in sequence, and the air outlet (13) of the air inlet pipe (20) is aligned with the pyrolysis gasification chamber (27); the second gas outlet pipe (15) and the air inlet pipe (20) are both equipped with the heat exchanger (16), and the two heat exchangers (16) are connected by the circulating water pipe (17); the inlet of the steam exhaust pipe (19) is located in the heat storage material layer (8), and its outlet is connected to the air inlet pipe (20).

5. The regenerative internal tar cracking gasification furnace device according to claim 1, characterized in that: A thermometer (23) is installed inside the interlayer cavity.

6. The regenerative internal tar cracking gasification furnace device according to claim 1, characterized in that: The outer surface of the pyrolysis gasification furnace is covered with thermal insulation cotton (25), which is made of aluminum silicate fiber; the temperature range of the pyrolysis gasification chamber (27) is controlled between 300℃ and 800℃.

7. The regenerative internal tar cracking gasification furnace device according to claim 1, characterized in that: The heat storage material of the heat storage material layer (8) is a ternary inorganic salt, namely Li2CO3-K2CO3-Na2CO3; the heat storage material layer (8) adopts a honeycomb structure or a grid structure.

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