Microwave-induced oxygen carrier heat release chemical chain gasification method

Abstract

The invention discloses a microwave-induced oxygen carrier heat release chemical looping gasification method, which is implemented by a chemical looping gasification device, and the gasification device comprises a microwave fuel reactor, an air reactor, a pyrolysis reactor and a carbon particle separator; the gasification method comprises the steps that drying and pyrolysis of biomass fuel are achieved in the pyrolysis reactor, and obtained crude pyrolysis gas is sent to the microwave fuel reactor to achieve secondary gasification reforming; chemical chain gasification and reforming of biomass coke under the action of water vapor and oxygen carrier lattice oxygen are realized in the microwave fuel reactor to obtain synthesis gas; under the action of a microwave absorbent mainly comprising an oxygen carrier, rapid heat storage and release are completed, and rapid heating and independent self-supply of heat of the microwave fuel reactor are realized; and oxidation regeneration of the reduced oxygen carrier is realized in the air reactor. Microwave heating and chemical looping gasification are coupled, and the problem that in traditional chemical looping gasification, due to the fact that heat of a microwave fuel reactor is difficult to be independent, the gasification efficiency and the gas production quality are difficult to guarantee in operation of a system is solved.

Description

Technical Field

[0001] The invention relates to a biomass chemical chain gasification method, in particular to a microwave-induced oxygen carrier heat-releasing chemical chain gasification method. Background Art

[0002] Biomass is the world's fourth largest energy source after coal, oil and natural gas, and is a renewable energy source with carbon neutral / zero carbon characteristics. Compared with traditional gasification processes, chemical chain gasification technology realizes the cascade utilization of fuel chemical energy, which can effectively improve gasification quality, reduce energy consumption, and effectively control NO x 、SO x Advantages such as the generation of harmful gases.

[0003] Conventional chemical chain gasification processes have the problem that the microwave fuel reactor cannot independently provide heat. The oxygen carrier will serve as a dual transport medium for oxygen and heat from the air reactor side, and at the same time transfer the lattice oxygen and heat required for stable reaction to the microwave fuel reactor. However, this "oxygen and heat" role positioning will make it difficult to achieve independent regulation of oxygen and heat in the microwave fuel reactor. This will greatly affect the gasification efficiency and gas production quality of the microwave fuel reactor in actual operation, which will become an important problem in the large-scale process of this technology.

[0004] Biomass microwave heating gasification can effectively increase the gasification reaction rate, gas production rate and fuel conversion rate. In addition, the rapid and uniform heating characteristics of microwave heating technology are also conducive to the heating and cracking of biomass tar, thereby further improving the gasification efficiency and gasification quality. Iron oxide is an effective microwave absorption medium, and it also has good oxygen carrying and tar catalytic cracking performance, and it is low-cost and environmentally friendly. Therefore, it is technically feasible to use iron-based oxygen carriers as microwave absorbers to carry out biomass chemical chain gasification. The new role of oxygen carriers in traditional chemical chain processes can achieve rapid heating and interphase heat transfer in microwave fuel reactors by absorbing microwaves, getting rid of the coupling relationship between oxygen and heat, so as to achieve directional regulation and matching between oxygen transport and heat supply, realize the thermal independence of microwave fuel reactors under low energy consumption, and ensure high gasification efficiency and gas production quality. Summary of the invention

[0005] Purpose of the invention: In order to solve the problem that the microwave fuel reactor of the traditional chemical chain gasification process in the prior art is difficult to achieve heat independence, resulting in the difficulty of ensuring the gasification efficiency and gas production quality during operation, the present invention couples the microwave heating technology with the chemical chain gasification technology, and proposes a microwave-induced oxygen carrier heat release chemical chain gasification method, in which the drying and pyrolysis of biomass fuel are realized in the pyrolysis reactor, and the obtained crude pyrolysis gas is sent to the microwave fuel reactor for secondary gasification reforming. In the microwave fuel reactor, the chemical chain gasification and reforming of biomass coke under the synergistic action of water vapor and oxygen carrier lattice oxygen are realized to obtain high-quality synthesis gas; at the same time, through the dielectric heat transfer effect of the microwave absorber mainly composed of oxygen carriers, rapid heat storage and release are completed, and rapid and uniform heating and independent heat self-sufficiency of the fuel reactor are realized; in the air reactor, the oxidative regeneration of the reduced oxygen carrier is realized, thereby realizing the efficient and low-cost resource utilization of biomass energy.

[0006] Technical solution: The microwave-induced oxygen carrier heat-releasing chemical chain gasification method of the present invention is implemented by a chemical chain gasification device, which includes a microwave fuel reactor, a carbon particle separator and a pyrolysis reactor; the top of the microwave fuel reactor is connected to the inlet of the carbon particle separator, and the outlet of the carbon particle separator is connected to an air reactor and a secondary cyclone separator; the air reactor is built with a plurality of air ducts; the outlet of the air reactor is connected to the inlet of the pyrolysis reactor, a pyrolysis gas branch pipe is provided on the pyrolysis reactor and is connected to the microwave fuel reactor, and a downcomer is provided below the pyrolysis reactor and is connected to the microwave fuel reactor;

[0007] The microwave-induced oxygen carrier heat release chemical chain gasification method comprises the following steps:

[0008] (1) Biomass fuel is added from the side of the pyrolysis reactor and undergoes solid-solid contact heat exchange with the hot oxygen carrier from the air reactor to obtain crude pyrolysis gas CO, H 2 , CH 3 , CO 2 and C 2 H 5 The biomass char and oxygen carrier particles are sent from the upper outlet of the pyrolysis reactor to the microwave fuel reactor for secondary gasification reforming, while the biomass coke and oxygen carrier particles enter the microwave fuel reactor from the lower outlet of the pyrolysis reactor for microwave chemical chain gasification reaction.

[0009] (2) The water vapor gasifying agent enters from the bottom of the microwave fuel reactor. The oxygen carrier and coke particles in the microwave fuel reactor move in a turbulent fluidized state under the action of the gasifying agent and undergo a gasification reaction:

[0010]

[0011] Water gas shift reaction CO+H 2 O→CO 2 +H2 ,ΔH<0

[0012]

[0013] Tar reforming reaction Tar + H 2 O→CO 2 +H 2 +CO+C m H n +…

[0014] At the same time, H in the gas product 2 and CO 2 Continue to participate in the reaction:

[0015] Hydrogenation reaction C+2H 2 →CH 4 ,ΔH<0

[0016] Methanation reaction CO + 3H 2 →CH 4 +H 2 O,ΔH<0

[0017] Carbon gasification reaction C+CO 2 →2CO,ΔH>0

[0018] Carbon dioxide reforming reaction CH 4 +CO 2 →2CO+2H 2 ,ΔH>0

[0019] (3) The synthesis gas from the microwave fuel reactor carries the reduced oxygen carrier and the residual carbon particles into the carbon particle separator, where the oxygen carrier is separated and sent to the air reactor for oxidation and regeneration, and the residual carbon particles are sent back to the microwave fuel reactor for secondary chemical chain gasification reaction to CH 3 , CO and H 2 The synthesis gas with components is output from the outlet of the secondary cyclone separator.

[0020] The microwave fuel reactor is formed by coupling a microwave heating furnace and a fuel reactor.

[0021] The air duct built into the air reactor is a single channel, and holes are distributed in the single channel.

[0022] The microwave fuel reactor is used as a riser to elevate biomass char and oxygen carrier particles.

[0023] The bed materials in the microwave fuel reactor are oxygen carriers and biomass coke particles, which move in a bubbling turbulent fluidized state under the fluidization action of the gasifying agent.

[0024] The pyrolysis reactor and the air reactor are of a downward moving bed structure.

[0025] The water vapor gasifying agent introduced into the bottom of the microwave fuel reactor includes water vapor and oxygen.

[0026] In step (1), the reaction temperature in the microwave heating coupled microwave fuel reactor is 500-700° C., which is 200° C. lower than that of conventional heating. The yield of high-quality synthesis gas s under microwave atmosphere exceeds 70%, and the tar content is controlled to be less than 10%.

[0027] In step (2), the microwave-carrying oxygen carrier releases the crystal lattice to reform the gasified synthesis gas and to thermally crack and catalytically crack the gasified tar. The oxygen carrier is a composite oxygen carrier made of iron-based material and doped with silicon carbide.

[0028] Working principle: The present invention is composed of a pyrolysis reactor, a microwave fuel reactor, an air reactor and a carbon particle separator, and the whole presents a circulating fluidized bed structure. Among them, the microwave fuel reactor is a microwave turbulent fluidized bed, which belongs to the riser of the circulating fluidized bed system. The pyrolysis reactor and the air reactor are both downward moving bed structures, located in the descending pipe section of the circulating fluidized bed system, that is, located in the descending pipe section of the microwave-induced oxygen carrier heat-releasing chemical chain gasification device of the present invention, and the pyrolysis reactor is placed at the lower end of the air reactor. The iron-based oxygen carrier is used as a microwave absorber to carry out biomass chemical chain gasification, and the microwave fuel reactor is coupled to a microwave heating furnace for secondary gasification reforming. The pyrolysis reactor is controlled to be a medium-temperature atmosphere to achieve the primary gasification of the repaired plants to obtain crude combustible gas. The microwave fuel reactor is a high-temperature atmosphere, and the lattice oxygen of the oxygen carrier is used to realize the secondary gasification reforming of the crude combustible gas; the oxidation regeneration of the oxygen-depleted oxygen carrier is realized in the air reactor. The separator and the return feeder realize the directional separation between the combustible gas, the oxygen carrier particles, and the residual carbon particles, as well as the recycling of the oxygen carrier and the residual carbon particles.

[0029] The separation system composed of a carbon particle separator and a secondary cyclone separator performs selective separation based on the difference in particle density and particle size, with the particle size being between 0.35 and 0.85 mm. The coarse oxygen carrier is first separated by the carbon particle separator, enters the air reactor for oxidation regeneration, and then falls into the pyrolysis reactor at the lower end for solid-solid heat exchange with the biomass material, and is then sent to the microwave fuel reactor through the downcomer to continue the reaction; while the fine residual carbon particles are separated in the secondary cyclone separator and sent to the microwave fuel reactor through the secondary return pipe.

[0030] The biomass fuel loop is composed of pyrolysis reactor - microwave fuel reactor - carbon particle separator - secondary cyclone separator - microwave fuel reactor.

[0031] The pyrolysis reactor - microwave fuel reactor - carbon particle separator - air reactor - pyrolysis reactor constitutes an oxygen carrier particle circulation loop.

[0032] The gasifying agent introduced into the bottom of the microwave fuel reactor is water vapor and a small amount of oxygen. The biomass material reacts with the gasifying agent to generate crude pyrolysis gas including CO, H 2 , CH 3 , CO 2 , C 2 H 5 Then, under the dielectric and heat transfer effects of microwave absorbers mainly composed of oxygen carriers h, rapid and uniform heating is achieved in the microwave fuel reactor, achieving directional regulation and matching between the required oxygen and heat; at the same time, oxygen carriers h in the microwave atmosphere release lattice oxygen to reform the gasification synthesis gas and thermal cracking and catalytic cracking of gasification tar, that is, the oxygen carrier particles entering from the turbulent fluidized bed at the bottom of the chemical chain reduction reactor contact with the crude pyrolysis gas, and the oxygen carrier particles release lattice oxygen to reform the crude combustible gas for secondary gasification, greatly improving the quality and gasification efficiency of the synthesis gas. The oxygen carrier particles are composite oxygen carriers made of iron-based materials and doped with silicon carbide with excellent microwave absorption performance, which have the integrated effect of "oxygen release-wave absorption-heat transfer-catalysis".

[0033] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0034] (1) The microwave-induced oxygen carrier heat-releasing chemical chain gasification method of the present invention realizes the directional regulation and matching between the amount of oxygen and the heat required by the microwave fuel reactor, and solves the problem that the conventional chemical chain gasification process affects the gasification efficiency and gas production quality due to the inability of the microwave fuel reactor to independently provide heat. At the same time, the cascade utilization of energy is realized through the grading of the microwave fuel reactor. Therefore, it can obtain higher gasification efficiency, thermal efficiency, combustible gas quality and tar cracking effect than the traditional gasification process and conventional chemical chain gasification technology, and achieve the coordinated consideration of reaction performance and energy utilization, thereby realizing the efficient and low-cost resource utilization of biomass energy.

[0035] (2) The microwave-induced oxygen carrier heat release chemical chain gasification method of the present invention increases the gasification reaction rate, improves the gas production rate and fuel conversion rate. In addition, the rapid and uniform heating characteristics of microwave heating technology are also conducive to the heating and cracking of biomass tar, thereby further improving the gasification efficiency and gasification quality.

[0036] (3) In the microwave chemical chaining atmosphere, the oxygen carrier not only serves as the oxygen-releasing reaction medium, but also plays the role of the main microwave absorber, thereby constructing the oxygen carrier's integrated function of "oxygen release-wave absorption-heat transfer-catalysis". It is technically feasible to use iron-based oxygen carriers as microwave absorbers to carry out biomass chemical chaining gasification. At this time, the oxygen carrier has been given a new role of "wave-absorbing heat source" on the basis of its role as an "oxygen-heat transport medium", that is, an oxygen-releasing reaction medium, in the traditional chemical chaining process. Thus, in the microwave fuel reactor, it can achieve rapid temperature rise and interphase heat transfer by absorbing microwaves, get rid of the coupling relationship between oxygen and heat, and thus achieve directional regulation and matching between oxygen transport and heat supply, thereby effectively utilizing its microwave dielectric properties to promote rapid heating of the microwave fuel reactor to achieve heat independence under low energy consumption, thereby ensuring the gasification efficiency and gas production quality of the microwave fuel reactor, and further promoting tar cracking, thereby realizing the integration of oxygen carrier oxygen release, dielectric, heat transfer, and catalytic cracking functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The present invention is a flow chart of the microwave-induced oxygen carrier heat-releasing chemical chain gasification method. DETAILED DESCRIPTION

[0038] like Figure 1 As shown, the specific connection mode of the microwave-induced oxygen carrier heat release chemical chain gasification device of the present invention is: the device is composed of a microwave fuel reactor 1, a carbon particle separator 2, an air reactor 3 and a pyrolysis reactor 6. The microwave fuel reactor 1 is formed by coupling a microwave heating furnace and a fuel reactor, and at the same time serves as a lifting pipe to lift biomass coke and oxygen carrier particles. The top of the microwave fuel reactor 1 is connected to the inlet of the carbon particle separator 2, and the outlet of the carbon particle separator 2 is connected to the air reactor 3 and the secondary cyclone separator 8 in sequence. A plurality of air ducts 4 are built in the air reactor 3, and the air flow direction in the air duct 4 is opposite to the direction of the particles, and the countercurrent achieves full contact. The small and numerous pores are larger and single-pore than the conventional container wall, thereby making the contact between the air and the particles more complete, avoiding the occurrence of airflow dead zone vortex zone. The small and numerous pores avoid the blockage of the pores by particles (most of the oxygen carrier + a small part of the carbon particles), ensuring the long-term stable operation of the equipment. The outlet of the air reactor 3 is connected to the inlet of the pyrolysis reactor 6. A pyrolysis gas branch pipe 5 is provided on the upper part of the pyrolysis reactor 6 to be connected to the microwave fuel reactor 1. The outlet of the pyrolysis reactor 6 is connected to the downcomer 7. The downcomer 7 is connected to the microwave fuel reactor 1 to form a loop.

[0039] The drying and pyrolysis of biomass fuel are realized in the pyrolysis reactor, and the obtained crude pyrolysis gas is sent to the microwave fuel reactor for secondary gasification and reforming. The chemical chain gasification and reforming of biomass coke under the synergistic effect of water vapor and oxygen carrier lattice oxygen are realized in the microwave fuel reactor to obtain high-quality synthesis gas; at the same time, through the dielectric heat transfer effect of microwave absorbers mainly composed of oxygen carriers, rapid heat storage and release are completed, and rapid and uniform heating and independent heat self-sufficiency of the microwave fuel reactor are realized. The oxidation regeneration of the reduced oxygen carrier is realized in the air reactor.

[0040] The specific steps of the microwave-induced oxygen carrier heat release chemical chain gasification method of the present invention are:

[0041] (1) In the pyrolysis reactor 6, the biomass fuel f is added from the side of the pyrolysis reactor 6, and solid-solid contact heat exchange occurs with the hot oxygen carrier h from the air reactor 3 in the pyrolysis reactor 6. On the one hand, the fuel is dried, the water content in the biomass fuel is reduced, and the pyrolysis efficiency is improved; on the other hand, the solid-solid contact heat exchange improves the heat transfer efficiency, ensures that the fuel particles are heated evenly, avoids local overheating or insufficient heating, and simplifies the equipment design, realizes the drying and pyrolysis of the fuel, and the obtained crude pyrolysis gas p is sent from the upper outlet of the pyrolysis reactor 6 to the microwave fuel reactor 1 for secondary gasification reforming. The oxygen carrier releases lattice oxygen in the microwave atmosphere to reform the gasified syngas and thermally and catalytically crack the gasified tar, greatly improving the quality of the syngas and the gasification efficiency. The biomass char g and the oxygen carrier particles h enter the microwave fuel reactor 1 from the lower outlet of the pyrolysis reactor 6 for microwave chemical chain gasification reaction.

[0042] (2) In the microwave fuel reactor 1, water vapor gasification agent A enters from the bottom, and the bed material is oxygen carrier h and coke particles g. Under the action of the gasification agent, it moves in a turbulent fluidized state and completes the gasification reaction, and a series of reactions occur:

[0043]

[0044] Water gas shift reaction CO + H 2 O→CO 2 +H 2 ,ΔH<0

[0045]

[0046] Tar reforming reaction Tar + H 2 O→CO 2 +H 2 +CO+C m H n +…

[0047] At the same time, H in the gas product 2 and CO 2Will continue to participate in the reaction:

[0048] Hydrogenation reaction C+2H 2 →CH 4 ,ΔH<0

[0049] Methanation reaction CO + 3H 2 →CH 4 +H 2 O,ΔH<0

[0050] Carbon gasification reaction C+CO 2 →2CO,ΔH>0

[0051] Carbon dioxide reforming reaction CH 4 +CO 2 →2CO+2H 2 ,ΔH>0

[0052] Under the dielectric and heat transfer effects of the microwave absorbent mainly composed of oxygen carrier h, rapid and uniform heating is achieved in the microwave fuel reactor 1, achieving directional regulation and matching between the required oxygen and heat; at the same time, the oxygen carrier h in the microwave atmosphere releases lattice oxygen to realize the reforming of the gasification synthesis gas and the thermal cracking and catalytic cracking of the gasification tar, greatly improving the synthesis gas quality and gasification efficiency.

[0053] (3) The high-quality synthesis gas s from the microwave fuel reactor 1 carries the reduced oxygen carrier h and the residual carbon particles i into the carbon particle separator 2, where the oxygen carrier h is separated and sent to the air reactor 3 for oxidation and regeneration. Assuming that the iron ore oxygen carrier is used as an example, the Fe 2 O 3 The main components are biomass and its pyrolysis products (H 2 , CO, CH 4 and tar) provide oxygen source, Fe 2 O 3 Gradually reduced to Fe 3 O 4 , and reduced to FeO. The residual carbon particles i are sent back to the microwave fuel reactor 1 for secondary chemical chain gasification reaction, and CH 3 , CO and H 2 The high-quality synthesis gas s, which is the main component, is stably output from the outlet of the secondary cyclone separator 8.

[0054] The reaction system contains biomass materials f with different particle sizes, char particles i, and oxygen-depleted oxygen carrier particles h. Among them, the bed material in the microwave fuel reactor 1 is the oxygen carrier and biomass coke particles, which are in a bubbling fluidized state under the fluidization of the gasifying agent, facilitating the full pyrolysis of biomass materials to obtain crude pyrolysis gas. The char particles i are small-sized fine particles, distributed in the microwave fuel reactor 1. The unreacted part continues to enter the secondary cyclone separator 8 via the char particle separator 2, where it is separated and returned to the microwave fuel reactor 1 for further reaction. The oxygen carrier particles h are small particles of medium size. After entering the bottom of the microwave fuel reactor 1, they only move upward and are effectively separated by the char particle separator 2 into the air reactor 3 for oxidative regeneration. After passing through the pyrolysis reactor 6 below, they then return to the bottom of the microwave fuel reactor 1 to continue participating in the chemical looping gasification reaction.

Claims

1. A microwave-induced oxygen carrier heat release chemical chain gasification method, characterized in that: The method is implemented by a chemical chain gasification device, the gasification device comprising a microwave fuel reactor (1), a carbon particle separator (2) and a pyrolysis reactor (6); the top of the microwave fuel reactor (1) is connected to the inlet of the carbon particle separator (2), and the outlet of the carbon particle separator (2) is connected to an air reactor (3) and a secondary cyclone separator (8); the air reactor (3) is internally provided with a plurality of air pipes (4); the outlet of the air reactor (3) is connected to the inlet of the pyrolysis reactor (6), a pyrolysis gas branch pipe (5) is provided on the pyrolysis reactor (6) and is connected to the microwave fuel reactor (1), and a downcomer (7) is provided below the pyrolysis reactor (6), and the downcomer (7) is connected to the microwave fuel reactor (1); The microwave-induced oxygen carrier heat release chemical chain gasification method comprises the following steps: (1) Biomass fuel (f) is added from the side of the pyrolysis reactor (6) and undergoes solid-solid contact heat exchange with the hot oxygen carrier (h) from the air reactor (3). The obtained crude pyrolysis gases CO, H2, CH3, CO2 and C2H5 are sent from the upper outlet of the pyrolysis reactor (6) to the microwave fuel reactor (1) for secondary gasification reforming, and the biomass coke (g) and the oxygen carrier particles (h) are sent from the lower outlet of the pyrolysis reactor (6) to the microwave fuel reactor (1) for microwave chemical chain gasification reaction. (2) The water vapor gasifying agent (A) enters from the bottom of the microwave fuel reactor (1), and the bed oxygen carrier (h) and coke particles (g) of the microwave fuel reactor (1) move in a turbulent fluidized state under the action of the gasifying agent and undergo a gasification reaction: Water gas shift reaction CO+H2O→CO2+H2, ΔH<0 Tar reforming reaction Tar + H2O → CO2 + H2 + CO + C m H n +… At the same time, H2 and CO2 in the gas products continue to participate in the reaction: Hydrogenation reaction C+2H2→CH4, ΔH<0 Methanation reaction CO+3H2→CH4+H2O, ΔH<0 Carbon gasification reaction C+CO2→2CO, ΔH>0 Carbon dioxide reforming reaction CH4+CO2→2CO+2H2, ΔH>0 (3) The synthesis gas (s) coming out of the microwave fuel reactor (1) carries the reduced oxygen carrier (h) and the residual carbon particles (i) into the carbon particle separator (2), wherein the oxygen carrier (h) is separated and sent to the air reactor (3) for oxidation regeneration, and the residual carbon particles (i) are sent back to the microwave fuel reactor (1) for secondary chemical chain gasification reaction, and the synthesis gas (s) with CH3, CO and H2 as components is output from the outlet of the secondary cyclone separator (8).

2. The microwave-induced oxygen carrier heat release chemical chain gasification method according to claim 1, characterized in that: The microwave fuel reactor (1) is formed by coupling a microwave heating furnace and a fuel reactor.

3. The microwave-induced oxygen carrier heat-releasing chemical chaining gasification method according to claim 1, characterized in that: The air duct (4) built into the air reactor (3) is a single channel, and holes are distributed in the single channel.

4. The microwave-induced oxygen carrier heat-releasing chemical chaining gasification method according to claim 1, characterized in that: The microwave fuel reactor (1) is used as a lifting pipe to lift biomass coke and oxygen carrier particles.

5. The microwave-induced oxygen carrier heat-releasing chemical chaining gasification method according to claim 1, characterized in that: The bed material in the microwave fuel reactor (1) is an oxygen carrier and biomass coke particles, which move in a bubbling turbulent fluidized state under the fluidization action of a gasifying agent.

6. The microwave-induced oxygen carrier heat-releasing chemical chaining gasification method according to claim 1, characterized in that: The pyrolysis reactor (5) and the air reactor (2) are of a downward moving bed structure.

7. The microwave-induced oxygen carrier heat-releasing chemical chaining gasification method according to claim 1, characterized in that: The water vapor gasifying agent (A) introduced into the bottom of the microwave fuel reactor (1) comprises water vapor and oxygen.

8. The microwave-induced oxygen carrier heat-releasing chemical chaining gasification method according to claim 1, characterized in that: In step (1), the reaction temperature in the microwave fuel reactor (1) is 500-700°C.

9. The microwave-induced oxygen carrier heat-releasing chemical chaining gasification method according to claim 1, characterized in that: In step (2), the oxygen carrier (h) releases the crystal lattice under microwave to reform the gasification synthesis gas and perform thermal cracking and catalytic cracking on the gasification tar.

10. The microwave-induced oxygen carrier heat-releasing chemical chaining gasification method according to claim 1, characterized in that: The oxygen carrier (h) is a composite oxygen carrier made of iron-based material and doped with silicon carbide.

Images