Coal or coke fluidized bed reaction evaluation device

Abstract

The utility model discloses a reaction evaluation device for a coal or coke fluidized bed. The reaction evaluation device comprises a gas control system, a feeding system, a reaction system, a product collecting system and a cleaning system, the reaction system is respectively connected with the gas control system, the feeding system, the product collecting system and the cleaning system. The device can realize reaction evaluation of continuous feeding of the coal / coke fluidized bed, can also realize low-temperature pyrolysis of coal and gasification reaction evaluation of coal / coke in different atmospheres, and can not only collect coal tar, but also meter reaction gas.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal chemical engineering development, and in particular relates to a coal or coal coke fluidized bed reaction evaluation device. Background Art

[0002] Coal gasification technology is a key technology to achieve clean, efficient and comprehensive utilization of coal, an important way to transform coal, and one of the key technologies for synthetic chemicals, combined cycle power generation and coal-to-substitute natural gas. Achieving efficient and clean utilization of coal is the key to achieving sustainable energy development in my country, and an effective way to solve the energy and environmental problems facing the world.

[0003] At present, the most widely used technology is the entrained-bed gasification technology, which increases the carbon conversion rate at the cost of high temperature and high pressure, which brings about problems such as high energy consumption, difficult gas purification, and demanding equipment requirements. At the same time, the excessively high operating temperature of the entrained-bed slag gasification technology increases the investment, maintenance and operating costs of the entrained-bed. Existing studies have pointed out that the current industrial entrained-bed gasifier is not suitable for the gasification of high-ash and high-ash melting point coal, and the world needs industrial fluidized bed gasification technology. Fluidized bed technology has the nature of adapting to high-ash melting point and high-ash coal types, whether for combustion or gasification, and the successful combustion of coal gangue in circulating fluidized bed boilers is a clear proof of this.

[0004] At present, the coal reaction evaluation device is mainly a fixed bed. The pyrolysis and gasification evaluation devices are separate sets. There is currently no integrated pyrolysis and gasification evaluation device. In addition, the fixed bed evaluation device has problems such as low gasification efficiency, slow gasification rate, poor adaptability to coal types, single gasification material, low evaluation efficiency, and high operating intensity. Summary of the invention

[0005] In order to overcome the above technical problems, the purpose of the utility model is to provide a coal or coal char fluidized bed reaction evaluation device, which can realize the reaction evaluation of continuous feeding of coal / coal char fluidized bed, and can also realize low-temperature pyrolysis of coal and gasification reaction evaluation of coal / coal char under different atmospheres. The evaluation device can not only collect coal tar, but also measure the reaction gas.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A coal or coal coke fluidized bed reaction evaluation device comprises a gas control system, a feeding system, a reaction system, a product collection system and a cleaning system; the reaction system is connected to the gas control system, the feeding system, the product collection system and the cleaning system respectively.

[0008] The gas control system includes a mixer, a preheater, a heater, and a plunger pump;

[0009] The preheater inlet is connected to the mixer outlet, and the preheater outlet is connected to the bottom of the reactor; the plunger pump inlet is connected to the desalted water pipeline, and the plunger pump outlet is connected to the heater inlet; the heater outlet is connected to the pipeline between the preheater and the mixer; the output ends of the five pipelines, namely the N2 pipeline, the CO2 pipeline, the CH4 pipeline, the H2 pipeline, and the Air pipeline, are directly connected to the mixer inlet after being gathered together, and the output ends of the N2 pipeline are respectively connected to nitrogen pipeline one, nitrogen pipeline two, nitrogen pipeline three, and nitrogen pipeline four.

[0010] The preheater and the heater are spiral shaped.

[0011] The feeding system includes a coal hopper, a rotary feeder and a ball valve 1; the top of the coal hopper is connected to a nitrogen pipeline 4, the top of the rotary feeder is connected to the output end of the coal hopper, the outlet of the rotary feeder is connected to one end of a ball valve 1, and the other end of the ball valve 1 is connected to the reactor; a nitrogen pipeline 2 is provided on the pipeline between the ball valve 1 and the reactor, and a nitrogen pipeline 1 is provided on the pipeline between the ball valve 1 and the rotary feeder.

[0012] A coal feeding port and a pressure gauge are arranged on the top of the coal hopper, a pressure gauge and a solid flow meter are arranged on the pipeline between the rotary feeder and the ball valve 1, and a thermometer is arranged on the pipeline between the ball valve 1 and the reactor.

[0013] The reaction system comprises a reactor, a multi-point thermometer, a filter and a gas distributor are arranged in the reactor, the filter and the gas distributor are installed in the reactor, the top of the filter is respectively connected to the reactor outlet pipeline and the nitrogen pipeline three, the reactor outlet pipeline is connected to one end of the ball valve two, and a pressure gauge is arranged on the ball valve two;

[0014] The reactor is provided with a gas distribution section, a reaction section and an expansion section from bottom to top, and the feed port is arranged in the reaction section; the gas distributor is arranged in the gas distribution section, and the gas distributor has a cavity structure and small holes are arranged on the surface, and the hole diameter is 20-100 microns; a hollow casing is arranged in the reactor, and a multi-point thermometer is installed in the casing, which mainly measures the temperature of the reaction section and the expansion section.

[0015] The reactor is provided with an electric heating jacket on the outside, and the temperature can reach up to 1200°C; the heater and preheater are both electrically heated, and the temperature can reach up to 500°C.

[0016] The filter is arranged on the flange at the top of the reactor and is connected by threads. It is a combination of one or more metal sintering and ceramic filters, and the particle size of the captured particles is less than 200 μm. A differential pressure gauge is provided between the inlet and outlet pipelines of the reactor; and the pressure regulating valve is a pneumatic regulating valve.

[0017] The product collection system includes a primary cooler, a primary recovery tank, a secondary cooler, a secondary recovery tank, a three-way valve, a dryer, a pressure regulating valve, a flow meter, a gas chromatograph and a gas storage tank;

[0018] The inlet of the first-stage cooler is connected to the other end of the second ball valve, the outlet of the first-stage cooler is connected to the inlet of the first-stage recovery tank, the top of the first-stage recovery tank is connected to the inlet of the second-stage cooler, the outlet of the second-stage cooler is connected to the inlet of the top of the second-stage recovery tank, the top of the second-stage recovery tank is connected to the inlet of the three-way valve, the outlet of the three-way valve is connected to the dryer, the pressure regulating valve and the flow meter in sequence; the outlet of the flow meter is divided into two routes, one is connected to the inlet of the gas storage tank, and the other is directly connected to the flare gas pipeline; the top of the gas storage tank is connected to the flare gas pipeline; the pipeline between the outlet of the pressure regulating valve and the inlet of the flow meter is connected to the gas chromatograph.

[0019] The first-stage cooler and the second-stage cooler outlet pipelines are both provided with thermometers, and the coolers are both jacketed coolers, with the coolant flowing through the jacket layer. The coolant of the first-stage cooler is ethylene glycol, and the coolant of the second-stage cooler is ultrapure water. The cooling source and power circulation of the coolant both come from the refrigerator; the top pipelines of the first-stage recovery tank and the second-stage recovery tank directly extend into the middle position of the tank, and drain pipelines are provided at the bottom, and ball valves are provided on the pipelines.

[0020] The cleaning system includes a cleaning tank, a cleaning pump and a ball valve three; the top of the cleaning tank is connected to the bottom of the three-way valve, and the bottom of the cleaning tank is connected to the inlet of the cleaning pump; the outlet of the cleaning pump is connected to one end of the ball valve three, and the other end of the ball valve three is connected to the pipeline between the ball valve two and the primary cooler.

[0021] A cleaning agent adding port is provided on the top of the cleaning storage tank, and the cleaning agent is generally one or more combinations of dichloromethane, acetone, and petroleum ether.

[0022] Each gas pipeline of the gas control system is provided with a ball valve, a flow meter, a flow regulating valve and a one-way valve in sequence, the N2 pipeline is provided with a pressure regulating valve, the heater outlet pipeline is provided with a thermometer and a one-way valve, and the preheater outlet pipeline is provided with a thermometer.

[0023] Beneficial effects of the utility model:

[0024] 1. This device can realize the reaction evaluation of coal / coal char fluidized bed under continuous feeding state, can also realize low-temperature pyrolysis of coal to collect coal tar, and can also realize the metering and online analysis of reaction gas generated by pyrolysis or gasification. It has wide adaptability to raw materials and wide operating conditions.

[0025] 2. The internal pipes of the heater and preheater are spiral, which increases the heating area and improves the heating efficiency of water vapor and mixed gas.

[0026] 3. A multi-point thermometer is installed in the reactor, and the temperature inside the reactor is evenly controlled with a small temperature difference. At the same time, a pneumatic pressure regulating valve is installed at the outlet of the device, which is easy to operate and has a high degree of automation.

[0027] 4. A gas distributor is installed in the reactor, which allows the preheated mixed gas to be mixed twice and then flow out evenly, ensuring that the material is well fluidized in the reactor.

[0028] 5. The reactor is configured with a gas distribution section, a reaction section and an expansion section. The gas distribution section is mainly used to secondary heat the mixed gas, almost heating it to the reaction temperature. The reaction section is mainly used for material reaction. The expansion section is mainly used to reduce the flow rate of the gas out of the reactor and settle the solid particles entrained in the gas back to the reaction section, thereby improving the material conversion rate and reducing the load on the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the utility model.

[0030] Figure 2 It is a schematic diagram of the reactor of the utility model.

[0031] Figure 3 This is a schematic diagram of the gas distributor inside the distribution section of the reactor of the utility model.

[0032] In the figure: 1-N2 pipeline, 2-CO2 pipeline, 3-CH4 pipeline, 4-H2 pipeline, 5-Air pipeline, 6-desalted water pipeline, 7-N2 pipeline, 8-N2 pipeline, 9-coal hopper, 10-rotary feeder, 11-ball valve, 12-mixer, 13-plunger pump, 14-heater, 15-preheater, 16-reactor, 17-primary cooler, 18-primary recovery tank, 19-secondary cooler, 20-secondary recovery tank, 21-cleaning storage tank, 22-cleaning pump, 23-dryer, 24-gas storage tank, 25-gas chromatograph, 26-flow meter, 27-three-way valve, 28-pressure regulating valve, 29-ball valve, 30-ball valve, 31-flare gas pipeline, 32-N2 pipeline, 33-gas distributor, 34-pressure gauge, 35-multi-point thermometer, 36-filter, 37-N2 pipeline, 38-differential pressure gauge, 39-distribution section, 40-reaction section, 41-expansion section, 42-feed port. DETAILED DESCRIPTION

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0034] See also Figure 1-Figure 3 The device of the utility model includes a gas control system, a feeding system, a reaction system, a product collection system and a cleaning system; the reaction system is connected to the gas control system, the feeding system, the product collection system and the cleaning system respectively.

[0035] Among them, the gas control system includes a mixer 12, a preheater 15, a heater 14, and a plunger pump 13; the inlet of the preheater 15 is connected to the mixer 12, and the outlet is connected to the bottom of the reactor 16; the inlet of the plunger pump 13 is connected to the desalted water 6, and the outlet is connected to the inlet of the heater 14; the outlet of the heater 14 is connected to the pipeline between the preheater 15 and the mixer 12; the five pipelines of N2 1, CO2 2, CH4 3, H24, and Air 5 are directly connected to the inlet of the mixer 12 after being collected, and N2 1 is respectively connected to nitrogen pipeline one 7, nitrogen pipeline two 8, nitrogen pipeline three 32, and nitrogen pipeline four 37.

[0036] Among them, the feeding system includes a coal hopper 9, a rotary feeder 10 and a ball valve 11; the top of the coal hopper 9 is connected to N237, the rotary feeder 10 is connected to the coal hopper 9 and the ball valve 11, and the ball valve 11 is connected to the reactor 16; a N2 pipeline 8 is provided on the pipeline between the ball valve 11 and the reactor 16, and a N2 pipeline 7 is provided on the pipeline between the ball valve 11 and the rotary feeder 10.

[0037] The reaction system includes a reactor 16, in which a multi-point thermometer 35, a filter 36 and a gas distributor 33 are provided. The filter 36 and the gas distributor 33 are installed in the reactor 16. The top of the filter 36 is respectively connected to the outlet pipeline of the reactor 16 and the N2 pipeline 32. The outlet pipeline of the reactor 16 is connected to the ball valve 29, and a pressure gauge 34 is provided on it.

[0038] Wherein, the product collection system comprises a primary cooler 17, a primary recovery tank 18, a secondary cooler 19, a secondary recovery tank 20, a three-way valve 27, a dryer 23, a pressure regulating valve 28, a flow meter 26, a gas chromatograph 25 and a gas storage tank 24; the inlet of the primary cooler 17 is connected to the other end of the ball valve 29, and the outlet is connected to the inlet of the primary recovery tank 18, the top of the primary recovery tank 18 is connected to the inlet of the secondary cooler 19, the outlet of the secondary cooler 19 is connected to the secondary recovery tank 20, the top of the secondary recovery tank 20 is connected to the inlet of the three-way valve 27, and the outlet of the three-way valve 27 is connected to the dryer 23, the pressure regulating valve 28, and the flow meter 26 in sequence; the outlet of the flow meter 26 is divided into two ways, one way is connected to the inlet of the gas storage tank 24, and the other way is directly connected to the flare gas pipeline 31; the top of the gas storage tank 24 is connected to the flare gas pipeline 31; the pipeline between the outlet of the pressure regulating valve 28 and the inlet of the flow meter 26 is connected to the gas chromatograph 25.

[0039] Among them, the cleaning system includes a cleaning tank 21, a cleaning pump 22 and a ball valve three 30; the top of the cleaning tank 21 is connected to the bottom of the three-way valve 27, and the bottom is connected to the inlet of the cleaning pump 22; the outlet of the cleaning pump 22 is connected to one end of the ball valve three 30, and the other end of the ball valve three 30 is connected to the pipeline between the ball valve two 29 and the primary cooler 17.

[0040] The reactor 16 is provided with an electric heating jacket on the outside, and the temperature can reach up to 1200°C; the heater 14 and the preheater 15 are both electrically heated, and the temperature can reach up to 500°C.

[0041] The first-stage cooler 17 and the second-stage cooler 19 are both provided with thermometers on their outlet pipelines, and both coolers are jacketed coolers, with the coolant flowing through the jacket layer. The coolant in the first-stage cooler 17 is ethylene glycol, and the coolant in the second-stage cooler 19 is ultrapure water. The cooling source and power circulation of the coolant both come from the refrigerator; the top pipelines of the first-stage recovery tank 18 and the second-stage recovery tank 20 extend directly into the middle position of the tank, and drain pipelines are provided at the bottom, and ball valves are provided on the pipelines.

[0042] The top of the coal hopper 9 is provided with a coal feeding port and a pressure gauge, the pipeline between the rotary feeder 10 and the ball valve 11 is provided with a pressure gauge and a solid flow meter, and the pipeline between the ball valve 11 and the reactor 16 is provided with a thermometer.

[0043] The top of the cleaning tank 21 is provided with a cleaning agent addition port, and the cleaning agent is generally one or more combinations of dichloromethane, acetone, and petroleum ether.

[0044] The filter 36 is arranged on the flange at the top of the reactor and is threadedly connected. It is a combination of one or more metal sintering and ceramic filters, and the particle size of the captured particles is less than 200 μm. A differential pressure gauge 38 is provided between the inlet and outlet pipelines of the reactor 16. The pressure regulating valve 28 is a pneumatic regulating valve.

[0045] Each gas pipeline of the gas control system is provided with a ball valve, a flow meter, a flow regulating valve and a one-way valve in sequence, the N237 pipeline is provided with a pressure regulating valve, the heater 14 outlet pipeline is provided with a thermometer and a one-way valve, and the preheater 15 outlet pipeline is provided with a thermometer.

[0046] The reactor 16 is provided with a gas distribution section, a reaction section, and an expansion section from bottom to top, and the feed port is arranged in the reaction section; the gas distributor 33 is also arranged in the gas distribution section, and the gas distributor 33 is arranged in the gas distribution section. The gas distributor has a cavity structure and many small holes are arranged on the surface. The hole diameter is 20-100 microns; a hollow sleeve is arranged inside the reactor, and a multi-point thermometer 35 is installed in the sleeve, which mainly measures the temperature of the reaction section and the expansion section.

[0047] Working principle of this utility model:

[0048] Preparation stage: open the feed port of the coal hopper 9, add the coal / coal char, and close the feed port to keep it in a closed state; open the feed port of the cleaning tank 21, add the cleaning agent (one or more combinations of dichloromethane, acetone, petroleum ether), and close the feed port to keep it in a closed state to prevent the cleaning agent from volatilizing; open the cooling source of the primary cooler 17 and the secondary cooler 19 to put them into a normal cooling state.

[0049] Reactor temperature and pressure increase: fully open the pressure regulating valve 28 to keep the system at normal pressure; close the coal inlet pipeline ball valve 11, open the N28 pipeline manual valve, use the flow regulating valve to set an appropriate flow, and introduce nitrogen into the coal inlet pipeline to prevent the pipeline temperature from being too high during the heating process, which is not conducive to the entry of raw materials; at the same time, open the N21 pipeline manual valve, use the flow regulating valve to set an appropriate flow, and introduce nitrogen into the system; turn on the power of the heater 14, preheater 15 and reactor 16, set the heating program respectively, and heat the system; during the heating process, control the system pressure by adjusting the pressure control valve 28, and set the pressure within the experimental requirements.

[0050] Feed reaction: when the temperature of the multi-point thermometer 35 of the reactor 16 reaches the set temperature, first open the N237 pipeline manual valve, and use the pressure regulating valve to control the pressure of the coal hopper 9 to always be greater than the reactor pressure by 0.1-0.5MPa; secondly, open the N27 pipeline manual valve, use the flow regulating valve to set an appropriate flow, open the ball valve 11, start the rotary feeder 10, and transport the coal / coal char to the reaction section of the reactor 16 for reaction; finally, according to different experimental requirements, one or more combinations of N21, CO22, CH43, H24, Air5, and desalted water 6 are used. If desalted water 6 is required, the plunger pump 13 needs to be started after it is used.

[0051] Coal / coal char and gas react in the reactor 16, and the gas out of the reactor 16 passes through the primary cooler 17, the primary recovery tank 18, the secondary cooler 19, the secondary recovery tank 20, the three-way valve 27, the dryer 23, the pressure regulating valve 28, the flow meter 26 and the gas storage tank 24 in sequence and is discharged to the flare gas pipeline 31.

[0052] The primary cooler 17 and the secondary cooler 19 condense the liquid carried in the gas in the primary recovery tank 18 and the secondary recovery tank 20 respectively, and the dryer 23 dries the cooled gas again to prevent the liquid carried in the gas from clogging the pressure regulating valve 28 and damaging the online chromatograph 25; the flow meter 26 can measure the total gas volume and instantaneous flow rate during the reaction process, so that the gas production can be accurately calculated; the gas storage tank 24 does not enter the storage tank during the heating and cooling stages, and the flare gas pipeline 31 is directly released from the bypass, and the gas is all collected in the storage tank during the reaction stage. After the experiment, the gas is sampled and analyzed for product composition; the online chromatograph 25 can analyze the composition of the reactor at all times during the reaction process, which is convenient for adjusting the system working conditions at all times; when the pressure difference between the inlet and outlet of the reactor 16 is too large, the filter 36 is used to backflush N2 32 to keep the pressure difference at 10-50kPa.

[0053] Reactor cooling and depressurization: After the experimental examination is completed, first close the coal inlet pipeline ball valve 11, rotary feeder 10 and N2 7 pipeline flow regulating valve, then close the CO2 2, CH4 3, H2 4, Air 5, and desalted water 6 pipeline flow regulating valves, then close the reactor 16, heater 14, and preheater 15 electric heating jacket to stop heating, and finally increase the flow of N2 1 and N2 8, and use nitrogen to cool the system; at the same time, adjust the pressure control valve 28 to gradually reduce the system pressure until the system pressure drops to normal pressure.

[0054] System cleaning: When the system temperature drops to about 30°C, turn off N2 1 and N2 8 pipeline flow regulating valve, fully open pressure regulating valve 28, when the system pressure is normal pressure, close ball valve 29, open ball valve 30, adjust three-way valve 27 to the direction of cleaning storage tank 21, start cleaning pump 22, use cleaning agent to clean primary cooler 17, primary recovery tank 18, secondary cooler 19, secondary recovery tank 20, three-way valve 27 and pipelines therebetween; when cleaning is completed, close cleaning pump 22, open primary recovery tank 18 and secondary recovery tank 20 drain pipeline hand valve, discharge and collect all the cleaned liquid, the cleaning agent in the cleaning storage tank 21 can be used by cleaning pump 22 to be discharged to the primary recovery tank 18 intermittently for multiple times; the collected liquid can be used to recover the cleaning agent by rotary evaporator, and the related substances generated by the reaction can also be obtained (for example: when coal is pyrolyzed, pyrolysis coal tar can be obtained, and the separated coal tar can be weighed to obtain the coal tar yield, and quantitative and qualitative analysis can be performed by GC-MS after constant volume).

[0055] The bottom buckle of the reactor 16 is opened, the gas distributor is taken out, and all the solid materials inside are discharged and collected. After the collection is completed, the solids are weighed to calculate the conversion rate, and the collected solids are characterized to evaluate the reaction.

Claims

1. A coal or char fluidized bed reaction evaluation device, characterized in that: It includes a gas control system, a feed system, a reaction system, a product collection system and a cleaning system; the reaction system is connected to the gas control system, the feed system, the product collection system and the cleaning system respectively.

2. A coal or char fluidized bed reaction evaluation device according to claim 1, characterized in that: The gas control system comprises a mixer (12), a preheater (15), a heater (14), and a plunger pump (13); The inlet of the preheater (15) is connected to the outlet of the mixer (12), and the outlet of the preheater (15) is connected to the bottom of the reactor (16); the inlet of the plunger pump (13) is connected to the desalted water pipeline (6), and the outlet of the plunger pump (13) is connected to the inlet of the heater (14); the outlet of the heater (14) is connected to the pipeline between the preheater (15) and the mixer (12); the output ends of the five pipelines, namely the N2 pipeline (1), the CO2 pipeline (2), the CH4 pipeline (3), the H2 pipeline (4), and the Air pipeline (5), are directly connected to the inlet of the mixer (12) after being collected, and the output end of the N2 pipeline (1) is respectively connected to the nitrogen pipeline one (7), the nitrogen pipeline two (8), the nitrogen pipeline three (32), and the nitrogen pipeline four (37).

3. A coal or char fluidized bed reaction evaluation device according to claim 2, characterized in that: The preheater (15) and the heater (14) are spiral-shaped.

4. A coal or char fluidized bed reaction evaluation device according to claim 2, characterized in that: The feeding system comprises a coal hopper (9), a rotary feeder (10) and a ball valve (11); the top of the coal hopper (9) is connected to a nitrogen pipeline (37), the top of the rotary feeder (10) is connected to an output end of the coal hopper (9), the outlet of the rotary feeder (10) is connected to one end of the ball valve (11), and the other end of the ball valve (11) is connected to a reactor (16); a nitrogen pipeline (8) is provided on the pipeline between the ball valve (11) and the reactor (16), and a nitrogen pipeline (7) is provided on the pipeline between the ball valve (11) and the rotary feeder (10).

5. A coal or char fluidized bed reaction evaluation device according to claim 4, characterized in that: The top of the coal hopper (9) is provided with a coal feeding port and a pressure gauge, the pipeline between the rotary feeder (10) and the ball valve 1 (11) is provided with a pressure gauge and a solid flow meter, and the pipeline between the ball valve 1 (11) and the reactor (16) is provided with a thermometer.

6. A coal or char fluidized bed reaction evaluation device according to claim 4, characterized in that: The reaction system comprises a reactor (16), wherein a multipoint thermometer (35), a filter (36) and a gas distributor (33) are arranged in the reactor (16), wherein the filter (36) and the gas distributor (33) are installed in the reactor (16), wherein the top of the filter (36) is respectively connected to the reactor (16) outlet pipeline and nitrogen pipeline three (32), wherein the reactor (16) outlet pipeline is connected to one end of ball valve two (29), and a pressure gauge (34) is arranged on the ball valve two (29); The reactor (16) is provided with a gas distribution section, a reaction section, and an expansion section from bottom to top, and the feed port is arranged in the reaction section; the gas distributor (33) is arranged in the gas distribution section, and the gas distributor (33) is a cavity structure, and small holes are arranged on the surface, and the hole diameter is 20-100 microns; the reactor (16) is provided with a hollow sleeve, and a multi-point thermometer (35) is installed in the sleeve; The reactor (16) is provided with an electric heating jacket on the outside; the heater (14) and the preheater (15) are both electrically heated; The filter (36) is arranged on the flange at the top of the reactor and is connected by threads.

7. A coal or char fluidized bed reaction evaluation device according to claim 6, characterized in that: The product collection system comprises a primary cooler (17), a primary recovery tank (18), a secondary cooler (19), a secondary recovery tank (20), a three-way valve (27), a dryer (23), a pressure regulating valve (28), a flow meter (26), a gas chromatograph (25) and a gas storage tank (24); The inlet of the primary cooler (17) is connected to the other end of the second ball valve (29), the outlet of the primary cooler (17) is connected to the inlet of the primary recovery tank (18), the top of the primary recovery tank (18) is connected to the inlet of the secondary cooler (19), the outlet of the secondary cooler (19) is connected to the inlet of the top of the secondary recovery tank (20), the top of the secondary recovery tank (20) is connected to the inlet of the three-way valve (27), the outlet of the three-way valve (27) is connected to the dryer (23), the pressure regulating valve (28), and the flow meter (26) in sequence; the outlet of the flow meter (26) is divided into two paths, one is connected to the inlet of the gas storage tank (24), and the other is directly connected to the flare gas pipeline (31); the top of the gas storage tank (24) is connected to the flare gas pipeline (31); the pipeline between the outlet of the pressure regulating valve (28) and the inlet of the flow meter (26) is connected to the gas chromatograph (25).

8. A coal or char fluidized bed reaction evaluation device according to claim 7, characterized in that: The outlet pipelines of the primary cooler (17) and the secondary cooler (19) are both provided with thermometers, and the coolers are both jacketed coolers.

9. A coal or char fluidized bed reaction evaluation device according to claim 7, characterized in that: The cleaning system comprises a cleaning tank (21), a cleaning pump (22) and a ball valve (30); the top of the cleaning tank (21) is connected to the bottom of the three-way valve (27), and the bottom of the cleaning tank (21) is connected to the inlet of the cleaning pump (22); the outlet of the cleaning pump (22) is connected to one end of the ball valve (30), and the other end of the ball valve (30) is connected to the pipeline between the ball valve (29) and the primary cooler (17); The top of the cleaning tank (21) is provided with a cleaning agent adding port.

10. The coal or char fluidized bed reaction evaluation device according to claim 1, characterized in that: Each gas pipeline of the gas control system is provided with a ball valve, a flow meter, a flow regulating valve and a one-way valve in sequence.

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