A microwave heating catalytic biomass gasification reaction device

Abstract

This invention relates to the field of biomass gasification equipment technology, specifically to a microwave-heated catalytic biomass gasification reactor, comprising a gasification furnace body, a pulverizing mechanism, and an air distribution mechanism. The gasification furnace body includes a feed inlet, a gasification furnace chamber, a grate, and a gas outlet pipe. A microwave heating source for microwave heating is provided on the inner wall of the top of the gasification furnace body. This invention enables autonomous feeding and automatic temperature control. In the pyrolysis reaction, a catalyst can be added to achieve targeted production of high-yield biomass gas. The introduction of microwave heating, a novel heating method, results in a pollution-free reaction process with low energy consumption and a fast reaction rate. The produced gas has a high calorific value, with the main components being CH, H, CH4, CO, etc., and a gas value of 20-30 MJ / m³. 3 It can be used as a gaseous fuel.

Description

Technical Field

[0001] This invention relates to the field of biomass gasification equipment technology, specifically to a microwave-heated catalytic biomass gasification reaction device. Background Technology

[0002] Biomass energy is a vital energy source for human survival, ranking fourth in global energy consumption after coal, oil, and natural gas, and holding a crucial position in the overall energy system. Given my country's abundant biomass resources, converting biomass rich in cellulose, hemicellulose, and lignin into biomass gas energy products through methods such as pyrolysis is of practical significance. Therefore, strengthening the comprehensive utilization of biomass resources and producing high-value-added products to ensure their effective use is essential.

[0003] In recent years, to address the energy shortages and environmental degradation caused by the heavy reliance on fossil fuels such as coal and oil, biomass energy has gained widespread attention worldwide as a new clean energy source. Extensive research has been conducted on biomass carbon and biomass gas in the utilization of biomass energy, with the acquisition of high-quality gaseous fuels through thermochemical conversion technology becoming a new research hotspot. Microwaves, as a novel heating method, have attracted increasing attention due to their rapid heating, ease of control, and pollution-free characteristics. Introducing microwaves into the biomass pyrolysis process can achieve advantages such as rapid reaction and easy control.

[0004] Many factors influence the thermal pyrolysis process, and the complexity of the resulting bio-oil products and the difficulty in achieving high-value utilization are major bottlenecks hindering the commercial development of rapid biomass pyrolysis. This patent, based on resource and economic feasibility, utilizes microwave rapid pyrolysis of biomass to produce biomass gas, achieving comprehensive utilization of the gaseous products and resulting in high-performance products.

[0005] Traditional biomass gasification devices primarily rely on heat transfer between materials to raise their temperature. Since the temperature of the small material particles rises from the outside in, a "cold center" problem may exist. Furthermore, the large quantity of material within the device leads to slow heating rates and incomplete reactions. Traditional biomass gasification devices use conventional fuels for heating, which typically suffers from thermal lag and produces polluting gases after combustion, negatively impacting environmental protection. Summary of the Invention

[0006] This invention addresses the shortcomings of biomass gasification furnace pyrolysis technology, such as high cost, severe pollution, "cold center," and low biomass gasification efficiency. It provides a microwave-heated catalytic biomass gasification device with a novel heating method that can efficiently and directionally generate biomass gas.

[0007] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0008] A microwave-heated catalytic biomass gasification reactor is characterized by comprising a gasification furnace body, a pulverizing mechanism, and an air distribution mechanism. The gasification furnace body includes a feed inlet, a gasification furnace chamber, a grate, and a gas outlet pipe. The inner wall of the top of the gasification furnace body is provided with a microwave heating source for microwave heating.

[0009] The bottom end of the crushing mechanism is provided with a discharge port, which is fixedly connected and communicated with the feed port provided at the top of the gasifier body through a pipe. The pipe is provided with a closed air vent to prevent hot air inside the gasifier body from affecting the material entry. The crushing mechanism is provided with a control component for controlling and adjusting the crushing degree and the feeding degree.

[0010] The air distribution device includes an air distribution pipe and a blower. The air distribution pipe consists of a main air inlet pipe and multiple branch air inlet pipes. The gas outlet pipe of the gasifier body is equipped with a condenser for separating biomass gas into biomass oil and biomass gas.

[0011] Preferably, the main air inlet pipe enters from one side of the top of the gasifier body, bends downward at the central axis of the gasifier body, and extends to 1 / 3 of the height of the gasifier body. The bottom wall of the main air inlet pipe is provided with 2 to 6 evenly distributed branch air inlet pipes. The 2 to 6 branch air inlet pipes are divided by the main air inlet pipe into multiple semi-circular air ducts at evenly spaced angles. The rotation diameter of each group of branch air inlet pipes is smaller than the radius of the gasifier body. There are multiple evenly distributed small holes at the end of the branch air inlet pipes, and the size of the small holes is 1.5 to 2.5 cm. The branch air inlet pipes are evenly distributed at 120° at the bottom of the main air inlet pipe.

[0012] Preferably, the microwave heating source is located at the center of the top of the gasification furnace body.

[0013] Preferably, the feed inlet at the top of the gasifier is directly connected to the discharge outlet of the pulverizer and is adjacent to the microwave heating source.

[0014] Preferably, the condenser connected to the outlet pipe has a temperature of -10℃ to 0℃.

[0015] Preferably, the gasifier body, feeding mechanism, and discharging mechanism are separated by a conveyor belt, which controls the material transfer components of different mechanisms. The conveyor belt is equipped with a track motor for providing power.

[0016] Preferably, the microwave heating source is equipped with a control and adjustment component for setting the microwave power and heating time according to the amount of material, and the control and adjustment component is equipped with a monitoring component for monitoring the stopping of microwave penetration after the material is dried, and the monitoring component is electrically connected to the control and adjustment component.

[0017] Preferably, the microwave heating source is equipped with an infrared thermometer, a temperature display component, and a temperature control signal transmission component. By using an infrared thermometer for temperature measurement, the required process temperature is reached and then maintained to meet the process requirements.

[0018] Preferably, the material being crushed by the crusher has a particle size of 3 to 10 mm.

[0019] Preferably, the gasifier body heats the material at a temperature of 400℃ to 700℃ and holds it at that temperature for 30 minutes to 120 minutes.

[0020] Preferably, the condensation mechanism is a condenser, which is fixedly connected and communicates with the air outlet pipe on the side of the furnace body through the air inlet provided at the top.

[0021] Preferably, both the air outlet pipe and the air inlet pipe are equipped with duct valves.

[0022] Preferably, the outlet of the condenser is equipped with a hydraulic valve.

[0023] Preferably, the side wall of the gasifier body is provided with an inspection port.

[0024] Preferably, the grate is a movable grate, which can be connected to the grate motor drive structure on the outer wall of the device through a transmission device, and the size of the slag outlet opening can be adjusted by the slag discharge motor.

[0025] The beneficial effects of this invention are as follows: This invention enables autonomous feeding and automatic temperature control; in the pyrolysis reaction, a catalyst can be added to achieve targeted production of high-yield biomass gas; based on microwave heating, it can heat the entire product, overcoming the "cold center" and ensuring uniform product quality; the heating speed is fast, significantly shortening the heating time and timely replenishing the energy required for the reaction, maintaining the reaction rate at a high level, thus reducing the process temperature to a certain extent; it has low thermal inertia, no heating lag, and is easy to automate and intelligently control; the produced gas has a high calorific value, with the main components being C2H2, H2, CH4, CO, etc., and a gas value of 25-30 MJ / m³. 3 It can be used as a gaseous fuel.

[0026] 1. Using biomass as raw material, high-yield biomass gas was produced for the first time under microwave catalytic pyrolysis conditions. Biomass has a wide range of sources and a large output. As a renewable biomass raw material, it can replace wood in the production of activated carbon and replace fossil fuels in the production of medium-calorific-value fuel gas, which is conducive to industrial promotion and the realization of a circular economy.

[0027] 2. This invention employs a novel microwave heating method, which significantly reduces the use of fossil fuels and coal, while also reducing corrosion of operating equipment and lowering equipment maintenance costs. Furthermore, the selective heating of microwaves allows the pyrolysis reaction to proceed rapidly. No chemical reagents are introduced during the pyrolysis process, ensuring product quality.

[0028] 3. The entire process has outstanding advantages such as clean products, high calorific value of fuel oil and gas, and environmentally friendly preparation process. It also has the advantages of high resource utilization and high product added value. The material sources of this invention are abundant, and biomass resources can be fully utilized to convert them into biomass energy products, providing a new approach for the development and utilization of biomass new energy.

[0029] 4. This equipment features a centrally located microwave heating source for efficient and uniform material drying. Traditional heating methods rely on external heat exchange, creating a "cold center" that can lead to incomplete reactions. This central heating system ensures a more thorough reaction. A central air duct in the furnace allows for even mixing and distribution of biomass and catalyst as they fall, ensuring a top-to-bottom sequential reaction. A condenser on the side of the furnace allows for direct separation of the generated gases into biomass gas and liquid, ensuring a continuous process. A grate at the bottom of the furnace allows for manual adjustment and removal of waste residue, which is then conveyed to a waste area.

[0030] 5. The calorific value of traditionally used fossil fuels and coal is generally 25.3–29.3 MJ / kg, while the calorific value of biomass gas obtained from this equipment is generally in the range of 25.7–30.5 MJ / kg. Therefore, comparing the two, it can be seen that the calorific value of biomass gas is slightly better than that of fossil fuels and coal, and it can replace traditional fossil fuels in terms of fuel calorific value.

[0031] 6. Regarding catalysts, when Zn-P / HZ was used as the catalyst, the yields of hydrocarbons and aromatics were the highest, at 86.46% and 78.29%, respectively. Zn promoted the formation of benzene, toluene, and alkylbenzenes, Mg promoted the conversion of xylene, while Cu and Ga promoted the formation of light olefins. The addition of metals significantly reduced the degree of graphitization and improved anti-coking properties. Furthermore, the addition of sodium carbonate could direct the production of alkane and hydrocarbon gases in the reaction.

[0032] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the following description of the embodiments will be briefly introduced. The accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of a microwave-heated catalytic biomass gasification reactor according to an embodiment of the present invention;

[0035] Figure 2 This is a partial cross-sectional view of a microwave-heated catalytic biomass gasification reactor according to an embodiment of the present invention;

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Feed inlet, 2. Microwave heating source, 3. Air duct valve, 4. Blower, 5. Main air inlet pipe, 6. Inspection port, 7. Slag discharge motor, 8. Conveyor belt, 9. Condenser, 11. Temperature display component, 12. Infrared thermometer, 13. Gasification furnace chamber, 14. Liquid outlet pipe, 15. Gas outlet pipe, 17. Liquid outlet valve, 18. Grate, 19. Temperature control signal transmission component, 20. Gasification furnace body, 21. Crushing mechanism, 22. Track motor, 23. Air inlet branch pipe. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1

[0040] like Figure 1 and Figure 2The microwave-heated catalytic biomass gasification reactor shown includes a pulverizing mechanism 21, a gasifier body 20, a condenser 9, a slag feeding mechanism, and an air distribution mechanism. The upper part of the main body of the microwave gasifier body has a feed inlet 1, and a gas outlet on the side. The gasifier body 20 is equipped with a grate 18. The gasifier body 20 has a gas outlet on one side and an inspection port 6 on the other side. A blower 4 is connected to an air inlet branch pipe 23 via a main air inlet pipe 5, and an air duct valve 3 is installed on the main air inlet pipe 5. The furnace wall of the gasifier body 20 is made of high-temperature resistant cement. The pulverizing mechanism 21 is located at the upper part of the gasifier body 20. The pulverizing mechanism 21 is connected to the gasifier body 20. A feed inlet 1 is provided between 0 and 0. The air outlet on the side of the gasifier body 20 is connected to the condenser 9 through the air outlet pipe 15. Two sets of air pipe valves 3 are provided on the air outlet pipe 15. The condenser 9 is provided with an air outlet and a liquid outlet, which are connected to the air outlet pipe 15 and the liquid outlet pipe 14 respectively. The air outlet pipe 15 and the liquid outlet pipe 14 are respectively provided with air pipe valve 3 and liquid outlet valve 17. The lower part of the gasifier body 20 is provided with a grate 18 driven by the slag discharge motor 7. The size of the grate 18 opening can be adjusted according to the amount of waste slag in the gasifier body 20. The discharged waste slag can be transported to the required location by the conveyor belt 8. The conveying speed of the conveyor belt 8 can be adjusted by the conveyor motor 22.

[0041] The working process is as follows: after impurity removal, the biomass material is crushed to a particle size of 3mm by the feeding crushing mechanism 21 and then enters the gasifier body 20. After being mixed evenly by the high-pressure air generated by the blower 4 through the three air inlet pipes 23, it falls into the gasifier chamber 13. In the gasifier chamber 13, it is microwave heated to 550°C by the microwave heating source 2. The temperature display component 11 of the microwave heating can display the temperature in the gasifier chamber 13 through the infrared thermometer 12. The infrared thermometer 12 can transmit and receive temperature information to the microwave heating source 2, thereby realizing the control of the temperature in the gasifier chamber 13, so as to achieve the goal of maintaining the temperature for 30 minutes after reaching the target temperature. Biomass reacts with a solid catalyst in the gasifier chamber 13. The biomass gas produced by the reaction in the gasifier chamber 13 reaches the condenser 9 through the gas outlet pipe 15. In the condenser 9, some of the gas condenses into liquid, which is discharged and collected through the liquid outlet pipe 14. The remaining gas is discharged and collected through the exhaust pipe, and is biomass gas with a high calorific value. The residue after the biomass reaction can be conveyed by the conveyor belt 8 to a designated collection point after the grate 18 driven by the slag discharge motor 7 is opened.

[0042] The conveyor belt 8 uses a motor as the track power to make the material move on the conveyor belt 8, and the waste slag is conveyed to the waste slag area through the conveyor belt 8.

[0043] The microwave heater needs to be set with microwave power and drying time according to the amount of material. After heating is completed, microwave intrusion can be stopped and the slag can be discharged.

[0044] The water vapor and gas generated after the reaction in the gasifier chamber 13 enter the condenser 9 through the gas outlet pipe 15. The gas with a relatively high liquefaction temperature is condensed into liquid and discharged through the liquid outlet pipe 14.

[0045] The microwave heating is carried out inside the gasification furnace body 20. The insulation layer is made of non-transparent high-temperature resistant material. The microwave power is configured after calculating the power density of the equipment according to the required calcination temperature. The temperature is measured by an infrared thermometer 12, and then the insulation is carried out to meet the requirements of the process conditions.

[0046] The gasifier body 20 contains 2 to 6 air inlet pipes 23.

[0047] Example 2

[0048] like Figure 1 and Figure 2 The microwave-heated catalytic biomass gasification reactor shown includes a pulverizing mechanism 21, a gasifier body 20, a condenser 9, a slag feeding mechanism, and an air distribution mechanism. The upper part of the main body of the microwave gasifier body has a feed inlet 1, and a gas outlet on the side. The gasifier body 20 is equipped with a grate 18. The gasifier body 20 has a gas outlet on one side and an inspection port 6 on the other side. A blower 4 is connected to four semi-circular air inlet branches 23 at the corners via a main air inlet pipe 5, and air duct valves 3 are installed on the main air inlet pipe 5. The furnace wall of the gasifier body 20 is made of high-temperature resistant cement. The pulverizing mechanism 21 is located at the upper part of the gasifier body 20. The pulverizing mechanism 21 is connected to the gasifier... A feed inlet 1 is provided between the gasifier bodies 20. The air outlet on the side of the gasifier body 20 is connected to the condenser 9 through the air outlet pipe 15. Two sets of air pipe valves 3 are provided on the air outlet pipe 15. The condenser 9 is provided with an air outlet and a liquid outlet, which are connected to the air outlet pipe 15 and the liquid outlet pipe 14 respectively. The air outlet pipe 15 and the liquid outlet pipe 14 are respectively provided with air pipe valve 3 and liquid outlet valve 17. A grate 18 driven by a slag discharge motor 7 is provided at the lower part of the gasifier body 20. The size of the grate 18 opening can be adjusted according to the amount of waste slag in the gasifier body 20. The discharged waste slag can be conveyed to the required location by the conveyor belt 8. The conveying speed of the conveyor belt 8 can be adjusted by the conveyor belt motor 22.

[0049] The working process is as follows: after impurity removal, the biomass material is crushed to a particle size of 3mm by the feeding crushing mechanism 21 and then enters the gasifier body 20. After being mixed evenly by the high-pressure air generated by the blower 4 through the four air inlet pipes 23, it falls into the gasifier chamber 13. In the gasifier chamber 13, it is microwave heated to 550°C by the microwave heating source 2. The temperature display component 11 of the microwave heating can display the temperature in the gasifier chamber 13 through the infrared thermometer 12. The infrared thermometer 12 can transmit and receive temperature information to the microwave heating source 2, thereby realizing the control of the temperature in the gasifier chamber 13, so as to achieve the goal of maintaining the temperature for 30 minutes after reaching the target temperature. Biomass reacts with a solid catalyst in the gasifier chamber 13. The biomass gas produced by the reaction in the gasifier chamber 13 reaches the condenser 9 through the gas outlet pipe 15. In the condenser 9, some of the gas condenses into liquid, which is discharged and collected through the liquid outlet pipe 14. The remaining gas is discharged and collected through the exhaust pipe, and is biomass gas with a high calorific value. The residue after the biomass reaction can be conveyed by the conveyor belt 8 to a designated collection point after the grate 18 driven by the slag discharge motor 7 is opened.

[0050] The conveyor belt 8 uses a motor as the track power to make the material move on the conveyor belt 8, and the waste slag is conveyed to the waste slag area through the conveyor belt 8.

[0051] The microwave heater needs to be set with microwave power and drying time according to the amount of material. After heating is completed, microwave intrusion can be stopped and the slag can be discharged.

[0052] The water vapor and gas generated after the reaction in the gasifier chamber 13 enter the condenser 9 through the gas outlet pipe 15. The gas with a relatively high liquefaction temperature is condensed into liquid and discharged through the liquid outlet pipe 14.

[0053] The microwave heating is carried out inside the gasification furnace body 20. The insulation layer is made of non-transparent high-temperature resistant material. The microwave power is configured after calculating the power density of the equipment according to the required calcination temperature. The temperature is measured by an infrared thermometer 12, and then the insulation is carried out to meet the requirements of the process conditions.

[0054] The gasifier body 20 contains 2 to 6 air inlet pipes 23.

[0055] Example 3

[0056] like Figure 1 and Figure 2The microwave-heated catalytic biomass gasification reactor shown includes a pulverizing mechanism 21, a gasifier body 20, a condenser 9, a slag feeding mechanism, and an air distribution mechanism. The upper part of the main body of the microwave gasifier body has a feed inlet 1, and a gas outlet on the side. The gasifier body 20 is equipped with a grate 18. The gasifier body 20 has a gas outlet on one side and an inspection port 6 on the other side. A blower 4 is connected to a triangular air inlet branch pipe 23 via a main air inlet pipe 5, and an air duct valve 3 is installed on the main air inlet pipe 5. The furnace wall of the gasifier body 20 is made of high-temperature resistant cement. The pulverizing mechanism 21 is located at the upper part of the gasifier body 20, and the pulverizing mechanism 21 is connected to the gasifier body. A feed inlet 1 is provided between the gasifier body 20 and the air outlet on the side of the gasifier body 20 is connected to the condenser 9 through the air outlet pipe 15. Two sets of air pipe valves 3 are provided on the air outlet pipe 15. The condenser 9 is provided with an air outlet and a liquid outlet, which are connected to the air outlet pipe 15 and the liquid outlet pipe 14 respectively. The air outlet pipe 15 and the liquid outlet pipe 14 are respectively provided with air pipe valve 3 and liquid outlet valve 17. A grate 18 driven by a slag discharge motor 7 is provided at the lower part of the gasifier body 20. The size of the grate 18 opening can be adjusted according to the amount of waste slag in the gasifier body 20. The discharged waste slag can be conveyed to the required location by the conveyor belt 8. The conveying speed of the conveyor belt 8 can be adjusted by the conveyor belt motor 22.

[0057] The working process is as follows: after impurity removal, the biomass material is crushed by the feeding and crushing mechanism 21 to a particle size of 3mm and then enters the gasifier body 20. After being mixed evenly by the high-pressure air generated by the blower 4 through the three air inlet pipes 23, it falls into the gasifier chamber 13. In the gasifier chamber 13, it is microwave heated to 650°C by the microwave heating source 2. The temperature display component 11 of the microwave heating can display the temperature in the gasifier chamber 13 through the infrared thermometer 12. The infrared thermometer 12 can transmit and receive temperature information to the microwave heating source 2, thereby realizing the control of the temperature in the gasifier chamber 13, so as to achieve the goal of maintaining the temperature for 30 minutes after reaching the target temperature. Biomass reacts with a solid catalyst in the gasifier chamber 13. The biomass gas produced by the reaction in the gasifier chamber 13 reaches the condenser 9 through the gas outlet pipe 15. In the condenser 9, some of the gas condenses into liquid, which is discharged and collected through the liquid outlet pipe 14. The remaining gas is discharged and collected through the exhaust pipe, and is biomass gas with a high calorific value. The residue after the biomass reaction can be conveyed by the conveyor belt 8 to a designated collection point after the grate 18 driven by the slag discharge motor 7 is opened.

[0058] The conveyor belt 8 uses a motor as the track power to make the material move on the conveyor belt 8, and the waste slag is conveyed to the waste slag area through the conveyor belt 8.

[0059] The microwave heater needs to be set with microwave power and drying time according to the amount of material. After heating is completed, microwave intrusion can be stopped and the slag can be discharged.

[0060] The water vapor and gas generated after the reaction in the gasifier chamber 13 enter the condenser 9 through the gas outlet pipe 15. The gas with a relatively high liquefaction temperature is condensed into liquid and discharged through the liquid outlet pipe 14.

[0061] The microwave heating is carried out inside the gasification furnace body 20. The insulation layer is made of non-transparent high-temperature resistant material. The microwave power is configured after calculating the power density of the equipment according to the required calcination temperature. The temperature is measured by an infrared thermometer 12, and then the insulation is carried out to meet the requirements of the process conditions.

[0062] The gasifier body 20 contains 2 to 6 air inlet pipes 23.

[0063] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A microwave heating catalytic biomass gasification reaction device, characterized in that, It includes a gasifier body (20), a crushing mechanism (21) and an air distribution mechanism. The gasifier body (20) includes a feed inlet (1), a gasifier chamber (13), a grate (18) and an exhaust pipe (15). The top inner wall of the gasifier body (20) is provided with a microwave heating source (2) for microwave heating. The bottom end of the crushing mechanism (21) is provided with a discharge port. The discharge port is fixedly connected and communicates with the feed port (1) provided at the top of the gasifier body (20) through a pipe. The pipe is provided with a closed air vent to prevent the hot air inside the gasifier body (20) from affecting the material entry. The crushing mechanism (21) is provided with a control component for controlling and adjusting the crushing degree and the feeding degree. The air distribution device includes an air distribution pipe and a blower (4). The air distribution pipe consists of a main air inlet pipe (5) and multiple air inlet branch pipes (23). The gas outlet pipe (15) of the gasifier body (20) is equipped with a condenser (9) for separating biomass gas into biomass oil and biomass gas. The main air inlet pipe (5) enters from the top side of the gasifier body (20), bends downward at the central axis of the gasifier body (20) and extends to 1 / 3 of the height of the gasifier body (20). The bottom wall of the main air inlet pipe (5) is provided with 2 to 6 evenly distributed air inlet branch pipes (23). The 2 to 6 air inlet branch pipes (23) are divided by the main air inlet pipe (5) into multiple semi-circular air pipes with uniform angle intervals. The rotation diameter of each group of air inlet branch pipes (23) is smaller than the radius of the gasifier body (20). There are multiple uniform small holes on the pipe wall at the end of the air inlet branch pipe (23). The size of the small holes is 1.5 to 2.5 cm. The air inlet branch pipes (23) are evenly distributed at 120° at the bottom of the main air inlet pipe (5). The microwave heating source (2) is located at the center of the top of the gasification furnace body (20); the feed inlet (1) at the top of the gasification furnace body (20) is directly connected to the outlet of the crushing mechanism (21) and is adjacent to the microwave heating source (2).

2. The microwave-heated catalytic biomass gasification reactor as described in claim 1, characterized in that, The gasifier body (20), the feeding mechanism and the discharging mechanism are separated by a conveyor belt (8), and the conveyor belt (8) is used to control the material transmission components of different mechanisms.

3. The microwave-heated catalytic biomass gasification reactor as described in claim 1, characterized in that, The microwave heating source (2) is equipped with a control and adjustment component for setting the microwave power and heating time according to the amount of material. The control and adjustment component is equipped with a monitoring component for stopping microwave penetration after the material is dried. The monitoring component is electrically connected to the control and adjustment component. The microwave heating source (2) is equipped with an infrared thermometer (12), a temperature display component (11), and a temperature control signal transmission component (19). After reaching the required process temperature, the infrared thermometer (12) is used to measure the temperature and the required process temperature is maintained to meet the process conditions.

4. The microwave-heated catalytic biomass gasification reactor as described in claim 1, characterized in that, The material crushing particle size of the crushing mechanism (21) is 3-10 mm; the heating temperature of the material by the gasification furnace body (20) is 400℃-700℃, and the holding temperature is 30min-120min.

5. The microwave-heated catalytic biomass gasification reactor as described in claim 1, characterized in that, The condenser (9) is fixedly connected to the gas outlet pipe on the side of the furnace body through the gas inlet provided at the top; the temperature of the condenser (9) connected to the gas outlet pipe (15) is -10℃~0℃; the liquid outlet pipe (14) of the condenser (9) is provided with a liquid outlet valve (17).

6. The microwave-heated catalytic biomass gasification reactor as described in claim 1, characterized in that, The gas outlet pipe (15) and the air inlet pipe (5) are both equipped with air pipe valves (3); the side wall of the gasifier body (20) is equipped with an inspection port (6); the grate (18) is a movable grate (18), which is connected to the grate (18) motor drive structure on the outer wall of the device through a transmission device, and the size of the slag outlet opening is adjusted by the slag discharge motor (7).

7. The microwave-heated catalytic biomass gasification reactor as described in claim 1, characterized in that: The biomass gas is used as a raw material, and the biomass gas includes one or more combinations of C2H2, H2, CH4, and CO.

8. The microwave-heated catalytic biomass gasification reactor as described in claim 7, characterized in that: The biomass gas combustion uses Zn-P / HZ as a catalyst.

Images