Gas-solid combined sampling gun, sampling device and reactor for chemical-looping fluidized bed

Abstract

The utility model discloses a gas-solid combined sampling gun for a chemical looping fluidized bed, a sampling device and a reactor, the gas-solid combined sampling gun comprises a sampling pipe, a pipeline control valve, a gas blowing pipeline and a gas blowing control valve, the sampling pipe is used for stretching into the reactor for sampling, the pipeline control valve, the gas blowing pipeline and the gas blowing control valve are arranged on the sampling pipe, and the pipeline control valve is used for controlling the on-off of the sampling pipe. The air blowing pipeline is communicated with the sampling pipe, and the air blowing control valve is used for controlling opening and closing of the air blowing pipeline; wherein the gas-solid combined sampling gun is set to have a solid sampling mode and a gas sampling mode, in the solid sampling mode, the pipeline control valve and the gas blowing control valve are both opened, so that the gas blowing pipeline introduces inert gas into the sampling pipe while the sampling pipe obtains flue gas from the reactor, and in the gas sampling mode, the pipeline control valve is opened, and the gas blowing pipeline introduces inert gas into the sampling pipe while the sampling pipe obtains the flue gas from the reactor. And the blowing control valve is closed. According to the scheme provided by the utility model, a solid sampling mode and a gas sampling mode can be realized, and the detection accuracy of the obtained solid sample can be improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, and more specifically, to a gas-solid combined sampling gun, sampling device and reactor for a chemical chain fluidized bed. Background Technology

[0002] In chemical loop combustion technology, the fluidized bed reactor, as the core equipment, primarily functions in the redox cycle of the oxygen carrier. Therefore, investigating the reaction status of the oxygen carrier within the reactor is crucial. Conventional sampling devices are limited by the complex environmental factors inside the reactor in chemical loop combustion systems, such as high temperatures, solid materials (e.g., oxygen carrier powder), dust, and water vapor, making direct sampling of the oxygen carrier inside the reactor impossible. Furthermore, if samples are taken from the flue gas in the reactor and then separated from the flue gas, the oxygen carrier continues to react during the sampling process, leading to inaccurate detection and analysis of the oxygen carrier. Utility Model Content

[0003] This invention provides a gas-solid combined sampling gun, sampling device, and reactor for a chemical chain fluidized bed, to solve the current problem of not being able to obtain accurately detectable solid reactants from the reactor.

[0004] An embodiment of this application provides a gas-solid combined sampling gun for a chemical loop fluidized bed, including a sampling tube for extending into the reactor to take samples, and a pipeline control valve, a blowing pipeline, and a blowing control valve disposed on the sampling tube. The pipeline control valve is configured to control the opening and closing of the sampling tube, the blowing pipeline is configured to communicate with the sampling tube, and the blowing control valve is configured to control the opening and closing of the blowing pipeline.

[0005] The gas-solid combined sampling gun is configured to have a solid sampling mode and a gas sampling mode. In the solid sampling mode, both the pipeline control valve and the gas blowing control valve are open, so that while the sampling tube obtains flue gas from the reactor, the gas blowing pipeline introduces inert gas into the sampling tube. In the gas sampling mode, the pipeline control valve is open and the gas blowing control valve is closed.

[0006] In one embodiment, at least two air blowing lines are provided at intervals along the length of the sampling tube, and each air blowing line is provided with an air blowing control valve.

[0007] In one embodiment, two air blowing lines are provided, one of which is located upstream of the pipeline control valve, and the other of which is located downstream of the pipeline control valve.

[0008] In one embodiment, two pipeline control valves are provided at intervals along the length of the sampling tube between the two air blowing pipelines.

[0009] In one embodiment, the system further includes a dredging pipeline connected to the sampling tube and a dredging control valve for controlling the switching of the dredging pipeline.

[0010] An embodiment of this application also provides a sampling device, including the gas-solid combined sampling gun as described above and a flue gas treatment module connected to the gas-solid combined sampling gun, wherein the flue gas treatment module is configured to perform gas-solid separation on the flue gas obtained by the gas-solid combined sampling gun.

[0011] In one embodiment, the flue gas treatment module includes a gas-solid separator and a gas cooler. The gas-solid separator is configured to perform gas-solid separation on the flue gas sampled by the gas-solid combined sampling gun, and the gas cooler cools the separated gas before outputting it.

[0012] In one embodiment, the flue gas treatment module further includes a filter between the gas-solid separator and the gas cooler.

[0013] In one embodiment, the flue gas treatment module is configured to be detachably connected to the gas-solid combined sampling gun, and the flue gas treatment module is configured to be movable.

[0014] An embodiment of this application also provides a reactor, including a reactor body and a plurality of gas-solid combined sampling guns as described above. The reactor body is provided with a plurality of openings at different height positions, and the plurality of gas-solid combined sampling guns are respectively installed in the plurality of openings.

[0015] The gas-solid combined sampling gun is configured to be detachably connected to the flue gas treatment module, and the flue gas treatment module is configured to process the flue gas acquired by the gas-solid combined sampling gun.

[0016] In the technical solution provided by the embodiments of this application, the gas-solid combined sampling gun can realize two working modes: solid sampling and gas sampling. During the solid sampling process, an inert gas is introduced to stop the reaction of the solid sample in the flue gas obtained from the reactor, thereby enabling the effective collection of solid samples inside the reactor in the anti-chemical loop combustion, ensuring the authenticity and integrity of the obtained solid samples, and thus improving the accuracy of subsequent detection and analysis of solid samples.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0019] Figure 1 This is a schematic diagram of a gas-solid combined sampling gun for a chemical chain fluidized bed according to one embodiment of this application;

[0020] Figure 2 This is a schematic diagram of a sampling device for a chemical chain fluidized bed according to one embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of a flue gas treatment module according to one embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10-Flue gas treatment module; 11-Support frame; 111-Square frame; 112-Base frame; 113-Handle; 114-Support base; 12-Gas-solid separator; 121-Cyclone separator; 122-Dust collection tank; 13-Gas cooler; 14-Filter; 15-Flue gas inlet pipe section; 16-Control valve; 17-Flue gas outlet pipe section; 18-Exhaust valve; 20-Gas-solid combined sampling gun; 21-Sampling tube; 22-Unblocking pipe; 23-First pipe control valve; 24-Second pipe control valve; 25-Unblocking control valve; 26-First blowing pipe; 27-Second blowing pipe; 28-Sealing flange; 30-Flexible pipe. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "'mouth' structure", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Embodiments of this application provide a gas-solid combined sampling gun 20 for a chemical chain fluidized bed, such as... Figure 1As shown, it includes a sampling tube 21 for extending into the reactor to take samples, and a pipeline control valve, a gas blowing pipeline and a gas blowing control valve disposed on the sampling tube 21. The pipeline control valve is configured to control the opening and closing of the sampling tube 21, the gas blowing pipeline is configured to communicate with the sampling tube 21 to introduce gas into the sampling tube 21, and the gas blowing control valve is configured to control the opening and closing of the gas blowing pipeline.

[0027] The gas-solid combined sampling gun 20 is configured to have a solid sampling mode and a gas sampling mode. In the solid sampling mode, both the pipeline control valve and the blowing control valve are open, so that while the sampling tube 21 obtains flue gas from the reactor, the blowing pipeline introduces inert gas into the sampling tube 21. In the gas sampling mode, the pipeline control valve is open and the blowing control valve is closed.

[0028] In solid sampling mode, since only solids in the flue gas need to be sampled, inert gas can be introduced through a blowing pipe. This inert gas is blown into the flue gas sampled in sampling tube 21 to stop the chemical reaction of the solid samples. Subsequently, the flue gas treatment module 10 separates the flue gas from the sampling tube 21 to obtain solid samples for analysis. In reactors using oxygen carriers for oxidation-reduction, the obtained solid samples mainly consist of oxygen carrier powder and dust. In gas sampling mode, since gas samples are required, inert gas cannot be introduced into sampling tube 21 through the blowing pipe, as this would dilute the gas in the sampled flue gas, making it impossible to obtain accurate gas detection data. Therefore, the blowing pipe needs to be shut off during sampling.

[0029] The gas-solid combined sampling gun 20 provided in the embodiments of this application can realize two working modes: solid sampling and gas sampling. During the solid sampling process, an inert gas is introduced to stop the reaction of the solid sample in the flue gas obtained from the reactor, thereby enabling the effective collection of solid samples inside the reactor in anti-chemical looping combustion, ensuring the authenticity and integrity of the obtained solid samples, and thus improving the accuracy of subsequent detection and analysis of solid samples.

[0030] In one embodiment, at least two air blowing lines are provided at intervals along the length of the sampling tube 21, and an air blowing control valve is provided for each air blowing line.

[0031] exist Figure 1 and Figure 2 In this example, two air blowing lines are provided at intervals along the length of the sampling tube 21, namely a first air blowing line 26 and a second air blowing line 27. In this example, the first air blowing line 26 is located upstream of the pipeline control valve, and the second air blowing line 27 is located downstream of the pipeline control valve.

[0032] Because a single blowing pipe is used, a large air volume is required to stop the reaction of the sampled solid. However, using a large air volume may cause the sampled flue gas to be back-blown into the reactor. Therefore, at least two blowing pipes can be set up, each with a relatively small air volume. This can solve the problem of flue gas being back-blown. Furthermore, by increasing the number of blowing pipes, even with a small air volume, the requirement to stop the reaction of the solid sample can still be met.

[0033] By placing the first air-blowing line 26 upstream of the pipeline control valve and the second air-blowing line 27 downstream of the pipeline control valve, the pipeline can be purged using the first air-blowing line 26 before sampling. Specifically, the pipeline control valve is closed, and the first air-blowing line 26 is opened, allowing inert gas to purge the pipeline upstream of the pipeline control valve, preventing dust blockage. After sampling, both air-blowing lines can be opened to clean the entire internal passage of the gas-solid combined sampling gun 20 and the pipeline control valve, preventing dust accumulation and avoiding dust jamming the pipeline control valve for future use.

[0034] exist Figure 1 and Figure 2 In the example, two pipeline control valves are spaced apart along the length of the sampling tube 21 between the two air blowing lines. These are the first pipeline control valve 23 and the second pipeline control valve 24. The two pipeline control valves and the two air blowing control valves can each be manual ball valves.

[0035] By setting two pipeline control valves, the problem of one pipeline control valve failing to close can be effectively solved. If the first pipeline control valve 23, which is close to the reactor, cannot close due to high temperature causing valve body jamming or other reasons, the second pipeline control valve 24 can be used to close the pipeline.

[0036] Figure 1 and Figure 2 In the example, the sampling tube 21 is also provided with a sealing flange 28 to seal the opening of the reactor when the sampling tube 21 extends into the reactor through the opening.

[0037] The sampling tube 21 can also be connected to a dredging pipe 22, which is equipped with a dredging control valve 25. Under normal conditions, the dredging pipe 22 is closed. When the sampling tube 21 is blocked, the dredging control valve 25 can be opened, and the dredging component can be inserted from the dredging pipe 22 to dredge the internal channel of the sampling tube 21.

[0038] Embodiments of this application also provide a sampling device for a chemical chain fluidized bed, such as... Figure 2As shown, it includes the gas-solid combined sampling gun 20 as described above and the flue gas treatment module 10 connected to the gas-solid combined sampling gun 20. The flue gas treatment module 10 is configured to perform gas-solid separation on the flue gas obtained by the gas-solid combined sampling gun 20.

[0039] In solid sampling mode, the solid separated by the flue gas treatment module 10 is used as the test sample in gas-solid combined sampling gun 20; in gas sampling mode, the gas separated by the flue gas treatment module 10 is used as the test sample.

[0040] In one embodiment, such as Figure 3 As shown, the flue gas treatment module 10 includes a gas-solid separator 12 and a gas cooler 13. The gas-solid separator is configured to perform gas-solid separation on the flue gas sampled by the gas-solid combined sampling gun 20, and the gas cooler 13 cools the separated gas before outputting it.

[0041] The gas-solid separator 12 may include a cyclone separator 121 and a dust collection tank 122 located at the bottom of the cyclone separator 121 to collect the solids separated by the cyclone separator 121. High-temperature flue gas from the reactor enters the cyclone separator 121 through the flue gas inlet pipe section 15 for deashing treatment. The separated solid dust is collected by the dust collection tank 122, and the deashed gas enters the gas cooler 13. The gas-solid separator 12 may be other forms of gas-solid separation device, and the gas cooler 13 may be a spirally wound coil or other forms of cooler, such as a pipeline placed in cooling water.

[0042] The flue gas treatment unit may also include a filter 14 located on the connecting pipeline between the gas-solid separator 12 and the gas cooler 13. The gas after being deashed by the gas-solid separator enters the filter 14 for secondary filtration and deashing, and the flue gas after secondary deashing then enters the gas cooler 13 for cooling.

[0043] In one embodiment, the flue gas treatment module 10 and the gas-solid combined sampling gun 20 are detachably connected, and the flue gas treatment module is movable. This allows the flue gas treatment module 10 to be used flexibly. For example, when multiple gas-solid combined sampling guns 20 are located at different positions on the reactor, the flue gas treatment module 10 can be moved to connect with different gas-solid combined sampling guns 20 to process the flue gas obtained by the gas-solid combined sampling guns 20 at different positions. Furthermore, when not sampling, the flue gas treatment module 10 can be detached from the gas-solid combined sampling gun 20, reducing space occupation. When needed, the flue gas treatment module 10 can be reconnected to the gas-solid combined sampling gun 20 where the desired flue gas is to be obtained, making it convenient and flexible to use.

[0044] like Figure 3In the example shown, the flue gas treatment module 10 includes a movable support frame 11, and components such as a gas-solid separator 12, a gas cooler 13, and pipelines are mounted on the support frame 11. In this way, the flue gas treatment module 10 can be moved as a whole by moving the support frame 11.

[0045] The support frame 11 can be configured as a square frame 111 and a base frame 112 at the bottom of the square frame 111. In this example, the flue gas treatment unit includes a gas-solid separator 12 and a gas cooler 13. The bottoms of the gas-solid separator 12 and the gas cooler 13 are both supported on the base frame 112 and fixed to the square frame 111 respectively. A handle 113 is provided at the top of the square frame 111, and multiple support seats 114 are provided at the bottom of the square frame 111 to support the support frame 11. It is understood that the structure of the support frame 11 can take various forms, and is not limited here.

[0046] To facilitate the movement of the flue gas treatment module 10, the support frame 11 is provided with a handle 113, which can be used to lift and move the flue gas treatment module 10. In another embodiment, rollers can also be provided at the bottom of the support frame 11, and the flue gas treatment module 10 can be moved by the rollers.

[0047] exist Figure 3 In the example, the gas inlet of the gas-solid separator 12 is connected to a flue gas inlet pipe section 15, which is detachably connected to the gas-solid combined sampling gun 20. The outlet end of the gas cooler 13 is connected to a flue gas outlet pipe section 17, which is connected to a vacuum pump.

[0048] When using the sampling device, the flue gas inlet pipe section 15 of the flue gas treatment module 10 is connected to the gas-solid combined sampling gun 20, and the flue gas outlet pipe section 17 is connected to the vacuum pump. This allows the vacuum pump to create a negative pressure within the gas-solid combined sampling gun 20 and the flue gas treatment module 10, causing the flue gas to enter under this negative pressure and then exit from the vacuum pump. Optionally, the flue gas treatment module 10 and the vacuum pump can be detachably connected, allowing for flexible use of both. Different flue gas treatment modules 10 can be used with different vacuum pumps and different gas-solid combined sampling guns 20.

[0049] It is understandable that the vacuum pump can also be mounted on the support frame 11. The vacuum pump can be part of the flue gas treatment module 10, so that it can be moved as a whole with the flue gas treatment module 10.

[0050] In one embodiment, such as Figure 1As shown, a flexible pipe section 30 is provided between the flue gas inlet pipe section 15 and the gas-solid combined sampling gun 20, and the flue gas inlet pipe section 15 and the flexible pipe section 30 are detachably connected; or, the flue gas inlet pipe section 15 includes the flexible pipe section 30, and the flexible pipe section 30 is detachably connected to the gas-solid combined sampling gun 20.

[0051] Since the flue gas obtained from the reactor by the gas-solid combined sampling gun 20 is usually at a high temperature, the flexible pipe section 30 can be a high-temperature corrugated pipe or other types of high-temperature resistant flexible pipe.

[0052] In one embodiment, a vent valve 18 is provided on the flue gas output pipe section 17, through which the flue gas in the flue gas output pipe section 17 can be vented.

[0053] The following is combined with Figures 1-3 The sampling process of the sampling device in one embodiment is described in detail.

[0054] Sampling was performed using a gas sampling mode:

[0055] Before sampling, the gas-solid combined sampling gun 20 is inserted into the sampling point inside the reactor through the opening set on the reactor, and the opening of the reactor is sealed with a sealing flange 28; the flue gas inlet pipe section 15 of the flue gas treatment module 10 is connected to the gas-solid combined sampling gun 20, and the flue gas outlet pipe section 17 is connected to the vacuum pump.

[0056] Before sampling, the first air blowing line 26 can be opened to introduce gas into the sampling tube 21 to purge the pipeline before the first pipeline control valve 23, so as to prevent dust and oxygen carrier powder inside the reactor from clogging the pipeline.

[0057] When taking samples, close the first air blowing line 26 (at the same time, the second air blowing line 27 is also closed), open the first line control valve 23 and the second line control valve 24, and check whether the connection between the pipeline and the connection between the cyclone separator 121 and the dust collection tank 122 is intact.

[0058] Turn on the vacuum pump and run it for a predetermined time (e.g., three minutes) to extract the flue gas from the flue gas treatment module 10. Then, open the control valve 16 on the flue gas inlet pipe section 15 of the flue gas treatment module 10. At this time, under the action of the vacuum pump, a negative pressure is formed in the gas-solid combined sampling gun 20 and the flue gas treatment module 10, so that the flue gas in the reactor enters the sampling device under the action of the negative pressure.

[0059] The high-temperature flue gas obtained from inside the reactor by the gas-solid combined sampling gun 20 is first de-ashed by a cyclone separator 121. The ash powder falls into the dust collection tank 122 due to the cyclone separation. The flue gas that has undergone primary de-ashing in the cyclone separator 121 enters the filter 14 from the top outlet for secondary filtration and de-ashing. The de-ashed high-temperature flue gas enters the gas cooler 13 for cooling. The cooled flue gas enters the vacuum pump through the flue gas output pipe section 17, and then is discharged through the outlet of the vacuum pump. At this time, the operator can use a gas storage bag to monitor the exhaust gas discharged from the vacuum pump. The flue gas is collected and stored. After the gas sampling operation is completed, the vacuum pump is turned off, and the control valve 16 on the flue gas inlet pipe section 15 is closed. Then, the blowing control valves of the first blowing pipe 26 and the second blowing pipe 27 are opened to backflush the channel inside the gas-solid combined sampling gun 20. The backflush gas is usually an inert gas such as carbon dioxide or nitrogen. The backflush operation lasts for about three minutes. After the backflush is completed, the first pipe control valve 23 and the second pipe control valve 24 are closed, and the blowing control valves of the first blowing pipe 26 and the second blowing pipe 27 are closed. Then, the ash collected in the ash collection tank 122 is poured out, and the cyclone separator 121 is resealed. At this point, the sampling device has completed the gas sampling operation.

[0060] Sampling was performed using a solid sampling method:

[0061] Before sampling, the gas-solid combined sampling gun 20 is inserted into the sampling point inside the reactor through the opening set on the reactor, and the opening of the reactor is sealed with a sealing flange 28; the flue gas inlet pipe section 15 of the flue gas treatment module 10 is connected to the gas-solid combined sampling gun 20, and the flue gas outlet pipe section 17 is connected to the vacuum pump.

[0062] Before sampling, the first air blowing line 26 can be opened to introduce gas into the sampling tube 21 to purge the pipeline before the first pipeline control valve 23, so as to prevent dust and oxygen carrier powder inside the reactor from clogging the pipeline.

[0063] When the sampling work begins, the first air blowing line 26 is kept open, and the second air blowing line 27 is opened, as well as the first line control valve 23 and the second line control valve 24, to check whether the connection between the pipeline and the connection between the cyclone separator 121 and the dust collection tank 122 is intact.

[0064] Turn on the vacuum pump and run it for a predetermined time (e.g., three minutes) to extract the flue gas from the flue gas treatment module 10. Then, open the control valve 16 on the flue gas inlet pipe section 15 of the flue gas treatment module 10. At this time, under the action of the vacuum pump, a negative pressure is formed in the gas-solid combined sampling gun 20 and the flue gas treatment module 10, so that the flue gas in the reactor enters the sampling device under the action of the negative pressure.

[0065] Since both the first blowing line 26 and the second blowing line 27 are open, the inert gas introduced into the sampling tube 21 from the first blowing line 26 and the second blowing line 27 will prevent the solid sample in the sampled flue gas from undergoing a chemical reaction. The inert gas introduced into the first blowing line 26 and the second blowing line 27 can be, for example, carbon dioxide, nitrogen, etc.

[0066] The high-temperature gas-solid mixture sample exiting the reactor and the inert gas introduced through the first blowing pipe 26 and the second blowing pipe 27 are first separated into solid and gas by a cyclone separator 121. The solid sample falls into the dust collection tank 122 due to the cyclone separation. The flue gas that has undergone primary ash removal in the cyclone separator 121 enters the filter 14 from the top outlet for secondary filtration and ash removal. The high-temperature flue gas after ash removal enters the gas cooler 13 for cooling. The cooled flue gas enters the vacuum pump through the flue gas output pipe section 17, and then exits through the vacuum pump. Since no gas sample is needed, the operator can directly vent the flue gas output from the vacuum pump. After the vacuum pump has been running for about three minutes, turn it off and close the control valve 16 on the flue gas inlet pipe 15. Keep the first blowing pipe 26 and the second blowing pipe 27 open to backflush the channels inside the gas-solid combined sampling gun 20. The backflushing process lasts for about three minutes. After the backflushing is completed, close the first pipe control valve 23 and the second pipe control valve 24, as well as the first blowing pipe 26 and the second blowing pipe 27. After the solid sample in the dust collection tank 122 has cooled to a suitable temperature, pour the solid sample from the dust collection tank 122 into the predetermined solid collection component. Then, clean the dust collection tank 122 and reseal it with the cyclone separator 121. At this point, the sampling device has completed the solid sampling operation and returned to its initial state before use.

[0067] Embodiments of this application also provide a reactor, including a reactor body and a plurality of gas-solid combined sampling guns 20 as described above. The reactor body has a plurality of openings at different heights, and the plurality of gas-solid combined sampling guns are respectively installed in the plurality of openings. The gas-solid combined sampling guns 20 are configured to be detachably connected to a flue gas treatment module 10, and the flue gas treatment module 10 is configured to process the flue gas acquired by the gas-solid combined sampling guns 20.

[0068] By setting up multiple gas-solid combined sampling guns 20 at different heights, samples can be taken from multiple different regions within the reactor, such as the dense phase region, the dilute phase region, and the transport region.

[0069] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0070] Although the embodiments disclosed in this utility model are as described above, the content described is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be defined by the appended claims.

Claims

1. A gas-solid combined sampling gun for a chemical chain fluidized bed, characterized in that, It includes a sampling tube for extending into the reactor to take a sample, and a pipeline control valve, a blowing pipeline and a blowing control valve disposed on the sampling tube. The pipeline control valve is configured to control the opening and closing of the sampling tube, the blowing pipeline is configured to communicate with the sampling tube, and the blowing control valve is configured to control the opening and closing of the blowing pipeline. The gas-solid combined sampling gun is configured to have a solid sampling mode and a gas sampling mode. In the solid sampling mode, both the pipeline control valve and the gas blowing control valve are open, so that while the sampling tube obtains flue gas from the reactor, the gas blowing pipeline introduces inert gas into the sampling tube. In the gas sampling mode, the pipeline control valve is open and the gas blowing control valve is closed.

2. The gas-solid combined sampling gun according to claim 1, characterized in that, At least two air blowing lines are provided at intervals along the length of the sampling tube, and each air blowing line is provided with an air blowing control valve.

3. The gas-solid combined sampling gun according to claim 2, characterized in that, There are two air blowing lines, one of which is located upstream of the pipeline control valve and the other is located downstream of the pipeline control valve.

4. The gas-solid combined sampling gun according to claim 3, characterized in that, Two pipeline control valves are provided at intervals along the length of the sampling tube between the two air blowing pipelines.

5. The gas-solid combined sampling gun according to any one of claims 1-4, characterized in that, It also includes a dredging pipeline connected to the sampling tube and a dredging control valve for controlling the opening and closing of the dredging pipeline.

6. A sampling device for a chemical chain fluidized bed, characterized in that, The system includes a gas-solid combined sampling gun according to any one of claims 1-5 and a flue gas treatment module connected to the gas-solid combined sampling gun, wherein the flue gas treatment module is configured to perform gas-solid separation on the flue gas acquired by the gas-solid combined sampling gun.

7. The sampling device according to claim 6, characterized in that, The flue gas treatment module includes a gas-solid separator and a gas cooler. The gas-solid separator is configured to perform gas-solid separation on the flue gas sampled by the gas-solid combined sampling gun, and the gas cooler cools the separated gas before outputting it.

8. The sampling device according to claim 7, characterized in that, The flue gas treatment module also includes a filter between the gas-solid separator and the gas cooler.

9. The sampling device according to any one of claims 6-8, characterized in that, The flue gas treatment module is configured to be detachably connected to the gas-solid combined sampling gun, and the flue gas treatment module is configured to be movable.

10. A reactor, characterized in that, The reactor body includes a reactor body and a plurality of gas-solid combined sampling guns according to any one of claims 1-5. The reactor body is provided with a plurality of openings at different height positions, and the plurality of gas-solid combined sampling guns are respectively installed in the plurality of openings. The gas-solid combined sampling gun is configured to be detachably connected to the flue gas treatment module, and the flue gas treatment module is configured to process the flue gas acquired by the gas-solid combined sampling gun.

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