A gasifier fly ash recycling system capable of recovering coal gas and a working method thereof

Abstract

The present invention discloses a fly ash recycling system for a gasifier capable of recovering coal gas and a working method thereof, which belongs to the technical field of gasifiers. The coal gas remover is connected to the waste boiler outlet and the fly ash storage tank respectively, the fly ash storage tank is connected to the fly ash lock bucket, the fly ash lock bucket is connected to the fly ash gas lift tank, the fly ash lock bucket and the fly ash gas lift tank are respectively connected to the first exhaust filter, the fly ash gas lift tank is connected to the fly ash acceleration unit, the fly ash acceleration unit is connected to the coal powder conveying unit; the first exhaust filter is connected to the desulfurization unit, the desulfurization unit is connected to the hot blast furnace unit, the hot blast furnace unit is connected to the pulverized coal drying device, the pulverized coal drying device is connected to the second exhaust filter, the second exhaust filter is respectively connected to the coal powder conveying unit and the hot blast furnace unit; the coal powder conveying unit is connected to the burner of the gasifier. The system can make full use of the fly ash residual carbon and the coal gas carried, improve the utilization rate of energy, and has good application prospects.

Description

Technical Field

[0001] The invention belongs to the technical field of gasifiers, and in particular relates to a gasifier fly ash recycling system capable of recovering coal gas and a working method thereof. Background Art

[0002] Coal gasification technology is the core technology for clean and efficient utilization of coal. It is also the key technology for developing advanced clean coal power generation, coal chemical industry, coal-based polygeneration and other energy systems. It has an important impact on the operational reliability and economy of each system. Driven by the rapid development of modern coal chemical projects, coal gasification technology is developing in the direction of large-scale, clean and efficient, and adaptable to a wide range of coal types. The development of coal gasification technology presents a situation of flourishing, but at this stage, there are still many problems to be solved in the development of efficient and clean coal gasification technology.

[0003] In the existing gasification furnace system, the gas in the fly ash is replaced, the fly ash is sent out of the gasifier, and the gas is sent to the flare. This measure, on the one hand, directly sends the fly ash with high residual carbon content out of the gasifier, resulting in energy waste; on the other hand, the gas carried in the fly ash cannot be effectively utilized, and the low-grade gas needs to be burned with a co-burner to be ignited and burned, and the burning of low-grade gas causes additional energy waste. The residual carbon in the fly ash and the gas carried in the fly ash cannot be effectively utilized, resulting in energy waste. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a gasifier fly ash recycling system capable of recovering coal gas and a working method thereof, which can fully utilize the fly ash carbon residue and the coal gas carried therein to improve the utilization rate of energy.

[0005] The present invention is achieved through the following technical solutions:

[0006] The invention discloses a fly ash recycling system for a gasifier capable of recovering coal gas, comprising a coal gas ash remover, a fly ash storage tank, a fly ash lock hopper, a fly ash gas lift tank, a first exhaust filter, a desulfurization unit, a hot blast furnace unit, a fly ash acceleration unit, a coal grinding drying device, a second exhaust filter and a coal powder conveying unit;

[0007] The inlet of the coal gas dust remover is connected to the waste boiler outlet of the gasifier, the bottom outlet of the coal gas dust remover is connected to the fly ash storage tank, the fly ash storage tank is connected to a pressurized nitrogen inlet pipe, the fly ash storage tank is connected to a fly ash lock hopper, the fly ash lock hopper is connected to a high-pressure nitrogen inlet pipe, the fly ash lock hopper is connected to a fly ash air lift tank, the fly ash air lift tank is connected to a low-pressure nitrogen inlet pipe, the fly ash lock hopper and the fly ash air lift tank are respectively connected to the first exhaust filter, the fly ash air lift tank is connected to a fly ash acceleration unit, and the fly ash acceleration unit is connected to a pulverized coal conveying unit;

[0008] The first exhaust filter is connected to the desulfurization unit, the desulfurization unit is connected to the hot blast stove unit, the hot blast stove unit is connected to the pulverized coal drying device, the pulverized coal drying device is connected to the second exhaust filter, the second exhaust filter is respectively connected to the pulverized coal conveying unit and the hot blast stove unit; the pulverized coal conveying unit is connected to the burner of the gasifier.

[0009] Preferably, the hot blast furnace unit includes a hot blast furnace and a hot blast furnace circulating fan, the desulfurization unit is connected to the fuel inlet of the hot blast furnace, the hot air outlet of the hot blast furnace is connected to the coal grinding drying device, the coal grinding drying device is connected to the second exhaust filter, the gas outlet of the second exhaust filter is connected to the hot blast furnace circulating fan, and the hot blast furnace circulating fan is connected to the air inlet of the hot blast furnace.

[0010] Preferably, the coal powder conveying unit includes a coal powder conveying atmospheric pressure tank, a coal powder conveying pressure transformer tank and a coal powder conveying high-pressure tank; the inlet of the coal powder conveying atmospheric pressure tank is respectively connected to the fly ash acceleration unit and the second exhaust filter, the outlet of the coal powder conveying atmospheric pressure tank is connected to the coal powder conveying pressure transformer tank, the coal powder conveying pressure transformer tank is connected to a pressed nitrogen inlet pipe, the coal powder conveying pressure transformer tank is connected to the coal powder conveying high-pressure tank, the coal powder conveying high-pressure tank is connected to the burner of the gasifier, and the coal powder conveying high-pressure tank is connected to a high-pressure nitrogen inlet pipe.

[0011] Further preferably, valves are provided on the connecting pipeline between the fly ash acceleration unit and the pulverized coal conveying atmospheric pressure tank and on the connecting pipeline between the second exhaust filter and the pulverized coal conveying atmospheric pressure tank.

[0012] Further preferably, the valves on the connecting pipeline between the fly ash acceleration unit and the coal powder conveying atmospheric pressure tank and the connecting pipeline between the second exhaust filter and the coal powder conveying atmospheric pressure tank are connected with anti-bridging blockage devices.

[0013] Preferably, the fly ash acceleration unit includes a fly ash buffer tank and a pressurized nitrogen system. The fly ash buffer tank is connected to the pressurized nitrogen system. A regulating valve is provided on the connecting pipeline between the fly ash buffer tank and the pressurized nitrogen system. The inlet of the fly ash buffer tank is connected to the fly ash gas lifting tank, and the outlet of the fly ash buffer tank is connected to the coal powder conveying unit.

[0014] Further preferably, the fly ash buffer tank is connected to an online fly ash carbon residue detection device, which is connected to a controller, and the outlet of the fly ash buffer tank is connected to two branches, one branch is connected to the coal powder conveying unit, and the other branch is connected to the fly ash bin. Valves are provided on both branches, and the two valves are respectively connected to the controller.

[0015] Preferably, the first exhaust filter is connected to a back-blowing nitrogen buffer tank.

[0016] Preferably, the coal gas dust remover adopts a cyclone separator, which has high separation efficiency and is simple to control and maintain.

[0017] The working method of the gasifier fly ash recycling system capable of recovering coal gas disclosed in the present invention comprises:

[0018] The ash-containing synthesis gas enters the gas ash remover from the waste boiler outlet of the gasifier, and after separation and treatment by the gas ash remover, the clean synthesis gas is discharged from the upper outlet of the gas ash remover, and the fly ash enters the fly ash storage tank from the bottom outlet of the gas ash remover. Under the action of the pressurized nitrogen, the fly ash enters the fly ash lock hopper and the fly ash air lift tank in turn. Under the action of high-pressure nitrogen and low-pressure nitrogen, the coal gas carried in the fly ash is displaced and enters the first exhaust filter. The filtered particles return to the fly ash air lift tank and enter the pulverized coal conveying unit together with the fly ash after being accelerated by the fly ash acceleration unit;

[0019] The filtered coal gas enters the desulfurization unit for desulfurization and then enters the hot blast furnace unit for combustion as fuel. The hot air produced by the hot blast furnace unit enters the coal grinding and drying device as drying air. The pulverized coal enters the second exhaust filter from the coal grinding and drying device. The gas discharged from the second exhaust filter enters the hot blast furnace unit for heating. The pulverized coal enters the pulverized coal conveying unit and is mixed with fly ash and then enters the gasifier furnace through the gasifier burner.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] The present invention discloses a fly ash recycling system for a gasifier capable of recovering coal gas. After the ash-containing synthetic gas is separated and treated by a coal gas deasher from the waste boiler outlet of the gasifier, it enters a fly ash storage tank, a fly ash lock bucket and a fly ash gas lift tank in sequence. The coal gas carried in the fly ash is displaced, and after filtering and desulfurization, it enters a hot blast furnace unit to be burned as fuel, recovering energy and achieving the purpose of energy saving. The gas discharged from the second exhaust filter is also fully utilized as the air intake of the hot blast furnace unit. The fly ash enters the coal powder conveying unit together with the coal powder, and finally enters the gasifier furnace through the gasifier burner to perform another combustion cycle. In addition, the displaced coal gas goes to the hot blast furnace, which also saves the energy consumption of the flare co-burner and reduces the flare load. The structural design of the gasifier is reasonable, and the residual carbon in the fly ash and the coal gas carried in the fly ash are fully utilized, thereby improving the overall efficiency of the gasifier and the comprehensive utilization rate of energy.

[0022] Furthermore, the fly ash from the fly ash acceleration unit enters the pulverized coal conveying atmospheric pressure tank, and there is no need to set up a separate fly ash silo, which simplifies the system and reduces the design, manufacturing and maintenance costs.

[0023] Furthermore, valves are provided on the connecting pipeline between the fly ash acceleration unit and the coal powder conveying atmospheric pressure tank and on the connecting pipeline between the second exhaust filter and the coal powder conveying atmospheric pressure tank. The control system can control the intermittent entry of coal powder and fly ash into the coal powder conveying atmospheric pressure tank, with a high degree of automation.

[0024] Furthermore, the anti-bridging device can prevent fly ash and coal powder from clogging the valve, improving the safety and stability of the system.

[0025] Furthermore, the fly ash in the fly ash buffer tank is transported through a pressurized nitrogen system, and the regulating valve adjusts the transport pressure in real time according to the operating conditions of the system, thereby improving efficiency while ensuring the stability of the system.

[0026] Furthermore, the fly ash carbon residue online detection device can detect the fly ash carbon residue in real time. When the fly ash carbon residue is high, the fly ash is controlled by a valve to enter the pulverized coal conveying unit for subsequent combustion and reuse; when the fly ash carbon residue is low, the fly ash is controlled by a valve to enter the fly ash bin as a by-product discharge system. While rationally utilizing energy, the overall efficiency of the gasification rate is guaranteed.

[0027] Furthermore, the first exhaust filter is connected to a back-blowing nitrogen buffer tank to prevent clogging and improve the safety and stability of the system.

[0028] The working method of the gasifier fly ash recycling system capable of recovering coal gas disclosed in the present invention can fully utilize the fly ash carbon residue and the coal gas carried therein, improve the utilization rate of energy, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] In the figure: 1-coal gas ash remover, 2-fly ash storage tank, 3-fly ash lock hopper, 4-fly ash gas lift tank, 5-first exhaust filter, 6-desulfurization unit, 7-fly ash acceleration unit, 8-coal grinding and drying device, 9-second exhaust filter, 10-hot blast furnace, 11-hot blast furnace circulating fan, 12-coal powder conveying atmospheric pressure tank, 13-coal powder conveying transformer tank, 14-coal powder conveying high-pressure tank, 15-backblowing nitrogen buffer tank. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings, the contents of which are intended to explain the present invention rather than to limit it:

[0032] like Figure 1 , which is a fly ash recycling system for a gasifier capable of recovering coal gas according to the present invention, comprises a coal gas ash remover 1, a fly ash storage tank 2, a fly ash lock hopper 3, a fly ash gas lift tank 4, a first exhaust filter 5, a desulfurization unit 6, a hot blast furnace unit, a fly ash acceleration unit 7, a coal grinding drying device 8, a second exhaust filter 9 and a coal powder conveying unit. The coal gas ash remover 1 is preferably a cyclone separator.

[0033] The inlet of the coal gas dust remover 1 is connected to the waste boiler outlet of the gasifier, the bottom outlet of the coal gas dust remover 1 is connected to the fly ash storage tank 2, the fly ash storage tank 2 is connected to a pressurized nitrogen inlet pipe, the fly ash storage tank 2 is connected to a fly ash lock hopper 3, the fly ash lock hopper 3 is connected to a high-pressure nitrogen inlet pipe, the fly ash lock hopper 3 is connected to a fly ash air lift tank 4, the fly ash air lift tank 4 is connected to a low-pressure nitrogen inlet pipe, the fly ash lock hopper 3 and the fly ash air lift tank 4 are respectively connected to the first exhaust filter 5, and the first exhaust filter 5 is connected to a backflush nitrogen buffer tank 15; the fly ash air lift tank 4 is connected to a fly ash acceleration unit 7, and the fly ash acceleration unit 7 is connected to a coal powder conveying unit;

[0034] The first exhaust filter 5 is connected to the desulfurization unit 6. The hot blast furnace unit includes a hot blast furnace 10 and a hot blast furnace circulating fan 11. The desulfurization unit 6 is connected to the fuel inlet of the hot blast furnace 10. The hot blast outlet of the hot blast furnace 10 is connected to the pulverized coal drying device 8. The pulverized coal drying device 8 is connected to the second exhaust filter 9. The gas outlet of the second exhaust filter 9 is connected to the hot blast furnace circulating fan 11. The hot blast furnace circulating fan 11 is connected to the air inlet of the hot blast furnace 10. The pulverized coal drying device 8 is connected to the second exhaust filter 9. The second exhaust filter 9 is connected to the pulverized coal conveying unit and the hot blast furnace unit respectively. The pulverized coal conveying unit includes a pulverized coal conveying atmospheric pressure tank 12, a pulverized coal conveying transformer tank 13 and a pulverized coal conveying high-pressure tank 14. The inlet of the pulverized coal conveying atmospheric pressure tank 12 is connected to the fly ash acceleration unit 7 and the second exhaust filter 9 respectively. Valves are provided on the connecting pipeline between the fly ash acceleration unit 7 and the pulverized coal conveying atmospheric pressure tank 12 and the connecting pipeline between the second exhaust filter 9 and the pulverized coal conveying atmospheric pressure tank 12. The valves on the connecting pipeline between the fly ash acceleration unit 7 and the pulverized coal conveying atmospheric pressure tank 12 and the connecting pipeline between the second exhaust filter 9 and the pulverized coal conveying atmospheric pressure tank 12 are connected with an anti-bridging blocking device. The outlet of the pulverized coal conveying atmospheric pressure tank 12 is connected with the pulverized coal conveying pressure transformer tank 13, the pulverized coal conveying pressure transformer tank 13 is connected with a pressurized nitrogen inlet pipe, the pulverized coal conveying pressure transformer tank 13 is connected with a pulverized coal conveying high-pressure tank 14, the pulverized coal conveying high-pressure tank 14 is connected with the burner of the gasifier, and the pulverized coal conveying high-pressure tank 14 is connected with a high-pressure nitrogen inlet pipe.

[0035] The fly ash acceleration unit 7 includes a fly ash buffer tank and a pressurized nitrogen system. The fly ash buffer tank is connected to the pressurized nitrogen system. A regulating valve is provided on the connecting pipeline between the fly ash buffer tank and the pressurized nitrogen system. The inlet of the fly ash buffer tank is connected to the fly ash gas lift tank 4. The outlet of the fly ash buffer tank is connected to the pulverized coal conveying unit. The fly ash buffer tank is connected to an online detection device for residual carbon in fly ash. The online detection device for residual carbon in fly ash is connected to a controller. The outlet of the fly ash buffer tank is connected to two branches, one of which is connected to the pulverized coal conveying unit and the other is connected to the fly ash bin. Valves are provided on both branches, and the two valves are respectively connected to the controller.

[0036] The working method of the above-mentioned gasifier fly ash recycling system capable of recovering coal gas comprises:

[0037] The ash-containing synthesis gas enters the coal gas ash remover 1 from the waste boiler outlet of the gasifier, and after separation and treatment by the coal gas ash remover 2, the clean synthesis gas is discharged from the upper outlet of the coal gas ash remover 1, and the fly ash enters the fly ash storage tank 2 from the bottom outlet of the coal gas ash remover 1. Under the action of the pressurized nitrogen, the fly ash enters the fly ash lock hopper 3 and the fly ash air lift tank 4 in turn. Under the action of the high-pressure nitrogen and the low-pressure nitrogen, the coal gas carried in the fly ash is replaced and enters the first exhaust filter 5. The back-flushing nitrogen buffer tank 15 regularly purges the first exhaust filter 5, and the filtered particles return to the fly ash air lift tank 4 and enter the fly ash buffer tank of the fly ash acceleration unit 7 together with the fly ash, and enter the coal powder conveying atmospheric pressure tank 12 after being accelerated by the pressurized nitrogen system;

[0038] The filtered coal gas enters the desulfurization unit 6 for desulfurization and then enters the hot blast furnace 10 for fuel combustion. The hot air produced by the hot blast furnace 10 enters the coal grinding drying device 8 as drying air. The coal powder enters the second exhaust filter 9 from the coal grinding drying device 8. The gas discharged from the second exhaust filter 9 enters the hot blast furnace 10 for heating through the hot blast furnace circulating fan 11. The coal powder enters the coal powder conveying atmospheric pressure tank 12 and mixes with the fly ash and then enters the gasifier furnace through the gasifier burner. The fly ash residual carbon online detection device can detect the fly ash residual carbon content in real time. When the fly ash residual carbon is high, the fly ash is controlled by a valve to enter the coal powder conveying unit for subsequent combustion and reuse; when the fly ash residual carbon is low, the fly ash is controlled by a valve to enter the fly ash bin as a by-product discharge system.

[0039] The above is only part of the embodiments of the present invention. Although some terms are used in the present invention, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present invention. It is contrary to the spirit of the present invention to interpret them as any additional restrictions. The above is only to further illustrate the content of the present invention with examples for easier understanding, but it does not mean that the embodiments of the present invention are limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention.

Claims

1. A gasifier fly ash recycling system capable of recovering coal gas, characterized in that: It comprises a coal gas ash remover (1), a fly ash storage tank (2), a fly ash lock hopper (3), a fly ash gas lift tank (4), a first exhaust filter (5), a desulfurization unit (6), a hot air furnace unit, a fly ash acceleration unit (7), a coal grinding drying device (8), a second exhaust filter (9) and a coal powder conveying unit; The inlet of the coal gas dust remover (1) is connected to the waste boiler outlet of the gasifier, the bottom outlet of the coal gas dust remover (1) is connected to the fly ash storage tank (2), the fly ash storage tank (2) is connected to a pressurized nitrogen inlet pipe, the fly ash storage tank (2) is connected to a fly ash lock hopper (3), the fly ash lock hopper (3) is connected to a high-pressure nitrogen inlet pipe, the fly ash lock hopper (3) is connected to a fly ash air lift tank (4), the fly ash air lift tank (4) is connected to a low-pressure nitrogen inlet pipe, the fly ash lock hopper (3) and the fly ash air lift tank (4) are respectively connected to a first exhaust filter (5), the fly ash air lift tank (4) is connected to a fly ash acceleration unit (7), and the fly ash acceleration unit (7) is connected to a pulverized coal conveying unit; The first exhaust filter (5) is connected to the desulfurization unit (6), the desulfurization unit (6) is connected to the hot blast furnace unit, the hot blast furnace unit is connected to the pulverized coal drying device (8), the pulverized coal drying device (8) is connected to the second exhaust filter (9), the second exhaust filter (9) is respectively connected to the pulverized coal conveying unit and the hot blast furnace unit; the pulverized coal conveying unit is connected to the burner of the gasifier; The hot blast furnace unit comprises a hot blast furnace (10) and a hot blast furnace circulating fan (11); the desulfurization unit (6) is connected to the fuel inlet of the hot blast furnace (10); the hot blast outlet of the hot blast furnace (10) is connected to the pulverized coal drying device (8); the pulverized coal drying device (8) is connected to the second exhaust filter (9); the gas outlet of the second exhaust filter (9) is connected to the hot blast furnace circulating fan (11); and the hot blast furnace circulating fan (11) is connected to the air inlet of the hot blast furnace (10); The pulverized coal conveying unit comprises a pulverized coal conveying atmospheric pressure tank (12), a pulverized coal conveying pressure-changing tank (13) and a pulverized coal conveying high-pressure tank (14); the inlet of the pulverized coal conveying atmospheric pressure tank (12) is respectively connected to the fly ash acceleration unit (7) and the second exhaust filter (9); the outlet of the pulverized coal conveying atmospheric pressure tank (12) is connected to the pulverized coal conveying pressure-changing tank (13); the pulverized coal conveying pressure-changing tank (13) is connected to a pressurized nitrogen inlet pipe; the pulverized coal conveying pressure-changing tank (13) is connected to the pulverized coal conveying high-pressure tank (14); the pulverized coal conveying high-pressure tank (14) is connected to the burner of the gasifier; and the pulverized coal conveying high-pressure tank (14) is connected to a high-pressure nitrogen inlet pipe.

2. The gasifier fly ash recycling system capable of recovering coal gas according to claim 1, characterized in that: Valves are provided on the connecting pipeline between the fly ash acceleration unit (7) and the coal powder conveying atmospheric pressure tank (12) and on the connecting pipeline between the second exhaust filter (9) and the coal powder conveying atmospheric pressure tank (12).

3. The gasifier fly ash recycling system capable of recovering coal gas according to claim 2, characterized in that: The connecting pipeline between the fly ash acceleration unit (7) and the coal powder conveying atmospheric pressure tank (12) and the valve on the connecting pipeline between the second exhaust filter (9) and the coal powder conveying atmospheric pressure tank (12) are connected with an anti-bridging blockage device.

4. The gasifier fly ash recycling system capable of recovering coal gas according to claim 1, characterized in that: The fly ash acceleration unit (7) comprises a fly ash buffer tank and a pressurized nitrogen system. The fly ash buffer tank is connected to the pressurized nitrogen system. A regulating valve is provided on the connecting pipeline between the fly ash buffer tank and the pressurized nitrogen system. The inlet of the fly ash buffer tank is connected to the fly ash gas lift tank (4), and the outlet of the fly ash buffer tank is connected to the pulverized coal conveying unit.

5. The gasifier fly ash recycling system capable of recovering coal gas according to claim 4, characterized in that: The fly ash buffer tank is connected to an online fly ash carbon residue detection device, which is connected to a controller. The outlet of the fly ash buffer tank is connected to two branches, one branch is connected to the coal powder conveying unit, and the other branch is connected to the fly ash bin. Valves are provided on both branches, and the two valves are respectively connected to the controller.

6. The gasifier fly ash recycling system capable of recovering coal gas according to claim 1, characterized in that: The first exhaust filter (5) is connected to a backflush nitrogen buffer tank (15).

7. The gasifier fly ash recycling system capable of recovering coal gas according to claim 1, characterized in that: The coal gas dust remover (1) is a cyclone separator.

8. The working method of the gasifier fly ash recycling system capable of recovering coal gas according to any one of claims 1 to 7, characterized in that: include: The ash-containing synthesis gas enters the coal gas ash remover (1) from the waste boiler outlet of the gasifier and is separated and treated by the coal gas ash remover (1). The clean synthesis gas is discharged from the upper outlet of the coal gas ash remover (1). The fly ash enters the fly ash storage tank (2) from the bottom outlet of the coal gas ash remover (1). Under the action of the pressurized nitrogen, the fly ash enters the fly ash lock hopper (3) and the fly ash air lift tank (4) in sequence. Under the action of the high-pressure nitrogen and the low-pressure nitrogen, the coal gas carried in the fly ash is displaced and enters the first exhaust filter (5). The filtered particles return to the fly ash air lift tank (4) and enter the coal powder conveying unit after being accelerated by the fly ash acceleration unit (7) together with the fly ash. The filtered coal gas enters the desulfurization unit (6) for desulfurization and then enters the hot blast furnace unit for combustion as fuel. The hot air produced by the hot blast furnace unit enters the coal grinding and drying device (8) as drying air. The pulverized coal enters the second exhaust filter (9) from the coal grinding and drying device (8). The gas discharged from the second exhaust filter (9) enters the hot blast furnace unit for heating. The pulverized coal enters the pulverized coal conveying unit for mixing with fly ash and then enters the furnace of the gasifier through the burner of the gasifier.

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