Catalyst filter tube denitration efficiency detection device

Abstract

The utility model discloses a denitration efficiency detection device for a catalyst filter tube. The denitration efficiency detection device comprises a cylinder body, the catalyst filter tube, an inlet pipeline and an outlet pipeline, the catalyst filter tube is detachably arranged in the cylinder body; the outlet end of the inlet pipeline penetrates through the barrel to be connected with the catalyst filter pipe, the inlet end of the inlet pipeline is connected with a flue gas pipeline, and the part, located on the outer side of the barrel, of the inlet pipeline is sequentially connected with a heater, a mixing pipe, an inlet air flow meter and an inlet nitrogen oxide concentration detector in the flue gas flowing direction; the inlet end of the outlet pipeline is connected with the barrel, and the part, located on the outer side of the barrel, of the outlet pipeline is sequentially connected with an outlet nitrogen oxide concentration detector and an outlet air flow meter in the flue gas flowing direction; when in use, the detection device is moved to a proper position of a flue gas pipeline at an outlet of a furnace, so that the flue gas can be quickly communicated, and the denitration efficiency of the catalyst filter pipe of the model in different temperature intervals can be quickly detected.

Description

Technical Field

[0001] The utility model relates to the technical field of denitration, in particular to a device for detecting the denitration efficiency of a catalyst filter tube Background Art

[0002] At present, the means for domestic enterprises producing catalyst filter tubes to detect denitration efficiency are relatively primitive and lack corresponding devices

[0003] The current common detection method is to install the produced filter tubes in old equipment for in-and-out testing. The old equipment usually has relatively large specifications. Replacing the newly produced and trial-produced filter tubes often consumes hundreds or thousands of filter tubes, which is costly and troublesome; or negotiating with the owner to build a set of devices with dozens of filter tubes at one's own expense and install them beside the furnace for detection. In summary, there is currently a lack of a flexible and effective detection device for detecting whether the quality of catalyst filter tubes meets the standards Summary of the Utility Model

[0004] In view of the above technical problems, the utility model discloses a device for detecting the denitration efficiency of a catalyst filter tube, comprising: a cylinder body, a catalyst filter tube, an inlet pipeline and an outlet pipeline

[0005] The catalyst filter tube is detachably arranged in the cylinder body, and a sealing cover plate is detachably connected to the open end of the cylinder body

[0006] The outlet end of the inlet pipeline passes through the cylinder body and is connected to the catalyst filter tube. The inlet end of the inlet pipeline is connected to a flue gas pipeline, and the part of the inlet pipeline outside the cylinder body is sequentially connected with a heater, a mixing pipe, an inlet air flow meter and an inlet nitrogen oxide concentration detector along the flue gas flow direction

[0007] The inlet end of the outlet pipeline is connected to the cylinder body, and the part of the outlet pipeline outside the cylinder body is sequentially connected with an outlet nitrogen oxide concentration detector and an outlet air flow meter along the flue gas flow direction

[0008] The inlet pipeline and the outlet pipeline are respectively connected to both ends of the cylinder body

[0009] In some embodiments, an inlet pressure transmitter and an inlet temperature transmitter are respectively connected to the cylinder body at a position near the inlet pipeline

[0010] An outlet pressure transmitter and an outlet temperature transmitter are respectively connected to the cylinder body at a position near the outlet pipeline

[0011] In some embodiments, an ammonia injection port is arranged at one end of the mixing pipe near the heater

[0012] In some of these embodiments, an ammonia electromagnetic flowmeter is provided on the ammonia injection pipe.

[0013] In some of these embodiments, the catalyst filter tube is a catalyst ceramic fiber filter tube.

[0014] In some of these embodiments, a quick connector adapted to the outlet end of the flue gas pipe is connected to the inlet end of the inlet pipe.

[0015] In some of these embodiments, a control cabinet is provided on the cylinder body, and the control cabinet is connected to the heater.

[0016] In some of these embodiments, a negative pressure centrifugal fan is connected to the outlet end of the outlet pipe.

[0017] In some of these embodiments, a partition is provided on the cylinder body near the sealing cover plate, and a filter tube perforation is provided on the partition. The outlet end of the catalyst filter tube passes through the partition through the filter tube perforation;

[0018] A pressing plate is provided outside the outlet end of the catalyst filter tube, and the pressing plate and the partition are fixedly connected together by bolts.

[0019] In some of these embodiments, the detection device is installed on a movable platform.

[0020] Compared with the prior art, the present utility model has one of the following advantages or beneficial effects:

[0021] The present utility model discloses a detection device for the denitration efficiency of a catalyst filter tube, which is used to quickly detect the denitration efficiency of the catalyst filter tube to improve the production quality of the catalyst filter tube, and further ensure that the delivered products meet the process requirements of customers. The detection device is small in size and can be installed on a movable platform, so as to be conveniently and flexibly moved to the furnaces of different industries to collect different flue gases. When in use, the detection device is moved to a suitable position of the flue gas pipe at the outlet of the furnace to quickly connect the flue gas and detect the denitration efficiency of the catalyst filter tube of this type. Moreover, the catalyst filter tube is convenient to replace and has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, the present invention and its features, shapes and advantages will become more obvious. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on showing the gist of the present invention.

[0023] Figure 1 It is a schematic structural diagram of the detection device for the denitration efficiency of the catalyst filter tube in the embodiment of the present invention;

[0024] Among them, 1. Cylinder body; 2. Partition board; 3. Sealing cover plate; 4. Catalyst filter tube; 5. Pressing plate; 6. Inlet pressure transmitter; 7. Inlet temperature transmitter; 8. Outlet pressure transmitter; 9. Outlet temperature transmitter; 10. Inlet nitrogen oxide concentration detector; 11. Inlet air flow meter; 12. Inlet pipeline; 13. Mixing pipe; 14. Ammonia injection port; 15. Heater; 16. Outlet nitrogen oxide concentration detector; 17. Outlet air flow meter; 18. Outlet pipeline; 19. Negative pressure centrifugal fan; 20. Control cabinet. Detailed implementation mode

[0025] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present utility model.

[0026] As Figure 1 shown, the present utility model discloses a device for detecting the denitration efficiency of a catalyst filter tube, including: a cylinder body 1, a catalyst filter tube 4, an inlet pipeline 12 and an outlet pipeline 18; the catalyst filter tube 4 is detachably arranged in the cylinder body 1, and a support point is arranged at the tail of the catalyst filter tube 4 to prevent the filter tube from breaking due to gravity, and a sealing cover plate 3 is detachably connected to the opening end of the cylinder body 1 so that the cylinder body 1 can be sealed; the outlet end of the inlet pipeline 12 is connected to the cylinder body 1 (flue gas enters the cylinder body 1 from the inlet pipeline 12), the inlet end of the inlet pipeline 12 is connected to a flue gas pipeline, and the part of the inlet pipeline 12 outside the cylinder body 1 is sequentially connected with a heater 15, a mixing pipe 13, an inlet air flow meter 11 and an inlet nitrogen oxide concentration detector 10 along the direction of flue gas flow; the inlet end of the outlet pipeline 18 is connected to the cylinder body 1 (the outlet pipeline 18 is arranged near the second end of the catalyst filter tube 4), and the part of the outlet pipeline 18 outside the cylinder body 1 is sequentially connected with an outlet nitrogen oxide concentration detector 16 and an outlet air flow meter 17 along the direction of flue gas flow; the inlet pipeline 12 and the outlet pipeline 18 are respectively connected to both ends of the cylinder body 1; a control cabinet 20 is arranged on the above-mentioned cylinder body 1, and the control cabinet 20 is connected to the heater 15; when the heating function needs to be turned on under working conditions, the temperature can be freely adjusted through the control cabinet 20, and the heater 15 can be started and stopped on the control cabinet. For different types of filter tubes, the flue gas needs to be adjusted to different temperature ranges to test the denitration efficiency of the catalyst filter tube 4, so that the temperature of the flue gas for testing the catalyst filter tube can be adjusted through the heater; the present utility model is sequentially provided with nitrogen oxide concentration detectors and air flow meters in the inlet pipeline 12 and the outlet pipeline 18 to be able to obtain the nitrogen oxide concentration and flow data before and after the denitration of the catalyst filter tube 4.

[0027] Specifically, an inlet pressure transmitter 6 and an inlet temperature transmitter 7 are respectively connected to the cylinder body 1 near the inlet pipeline 12; an outlet pressure transmitter 8 and an outlet temperature transmitter 9 are respectively connected to the cylinder body 1 near the outlet pipeline 18; in this application, the temperature transmitter can obtain the temperature data inside the cylinder body 1; and the pressure transmitter can be used to read the pressure data to test the filter tube resistance; specifically, the average value of the detection values of the inlet temperature transmitter 7 and the outlet temperature transmitter 9 can be taken to obtain the temperature of the flue gas inside the cylinder body 1, because various catalyst filter tubes have different applicable temperature ranges. Regardless of the test result of the detection device, we need to know the actual temperature range of the flue gas inside the cylinder body 1; in this application, by setting a heater and a temperature transmitter, different temperature ranges can be obtained to test the denitration efficiency of the catalyst filter tube 4 of this model.

[0028] In an embodiment of the present utility model, an ammonia injection port 14 is provided at one end of the mixing pipe 13 near the heater 15 for injecting ammonia into the mixing pipe 13 through the ammonia injection port 14; specifically, the mixing pipe 13 is a DN80 pipeline, which can reduce the flow rate to vaporize ammonia and mix it evenly with the flue gas, and an ammonia electromagnetic flowmeter is provided on the ammonia injection port 14 for reading the flow rate of ammonia in real time. Since the mixing pipe 13 is arranged near the heater 15, the heater 15 heats the air, which can vaporize the phase change of ammonia. The gaseous NH4 mixes with the flue gas after entering through the ammonia injection pipe 14 and then enters the catalyst filter tube 4 with the flue gas, and denitration occurs under the action of the catalyst in the catalyst filter tube 4.

[0029] In an embodiment of the present utility model, the catalyst filter tube 4 is a catalyst ceramic fiber filter tube (that is, the catalyst ceramic fiber filter tube is a ceramic fiber filter tube implanted with a catalyst), and the ceramic fiber filter tube is the core filtering component of this detection device, and the flue gas passes through the ceramic fiber filter tube to complete filtration and purification.

[0030] In an embodiment of the present utility model, a quick connector adapted to the outlet end of the flue gas pipeline is connected to the inlet end of the inlet pipeline 12; thus, the quick connector can be used to quickly connect to the furnace flue gas. And a negative pressure centrifugal fan 19 is connected to the outlet end of the outlet pipeline 18.

[0031] In an embodiment of the present utility model, a partition plate 2 is provided at the position of the cylinder body 1 near the sealing cover plate 3, and a filter tube perforation is provided on the partition plate 2; the outlet end of the catalyst filter tube 4 passes through the partition plate 2 through the filter tube mounting hole; a pressing plate 5 is arranged outside the outlet end of the catalyst filter tube 4, and the pressing plate 5 and the partition plate 2 are fixedly connected together by bolts, so that the catalyst filter tube 4 inside the cylinder body 1 can be easily replaced.

[0032] In an embodiment of the present utility model, the above detection device is installed on a movable platform, so as to facilitate flexible movement to furnaces in different industries to collect different flue gases.

[0033] Here, it should be noted that after the ammonia injection port, it is necessary to maintain a relatively low flue gas flow rate, and the flue gas flow rate in the cylinder should be controlled within 1 m / s.

[0034] The preferred embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific implementation manners, and the equipment and structures not described in detail should be understood to be implemented in a common manner in the art; any person skilled in the art can, without departing from the scope of the technical solution of the present utility model, make many possible changes and modifications to the technical solution of the present utility model by using the methods and technical contents disclosed above, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essence of the present utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A device for detecting the denitration efficiency of a catalyst filter tube, characterized in that, Including: A cylinder body, catalyst filter tubes, an inlet pipeline, and an outlet pipeline; The catalyst filter tubes are detachably arranged inside the cylinder body, and a sealing cover plate is detachably connected to the open end of the cylinder body; The outlet end of the inlet pipeline passes through the cylinder body and is connected to the catalyst filter tubes. The inlet end of the inlet pipeline is connected to a flue gas pipeline, and the part of the inlet pipeline outside the cylinder body is sequentially connected with a heater, a mixing pipe, an inlet air flow meter, and an inlet nitrogen oxide concentration detector along the flue gas flow direction; The inlet end of the outlet pipeline is connected to the cylinder body, and the part of the outlet pipeline outside the cylinder body is sequentially connected with an outlet nitrogen oxide concentration detector and an outlet air flow meter along the flue gas flow direction; The inlet pipeline and the outlet pipeline are respectively connected to both ends of the cylinder body.

2. The catalyst filter tube denitration efficiency detection device according to claim 1, wherein, An inlet pressure transmitter and an inlet temperature transmitter are respectively connected to the cylinder body at a position close to the inlet pipeline; An outlet pressure transmitter and an outlet temperature transmitter are respectively connected to the cylinder body at a position close to the outlet pipeline.

3. The catalyst filter tube denitration efficiency detection device according to claim 1, wherein, An ammonia injection port is arranged at one end of the mixing pipe close to the heater.

4. The catalyst filter tube denitration efficiency detection device according to claim 3, characterized in that An ammonia electromagnetic flow meter is arranged on the ammonia injection pipe.

5. The catalyst filter tube denitration efficiency detection device according to claim 1, characterized in that The catalyst filter tubes are catalyst ceramic fiber filter tubes.

6. The catalyst filter tube denitration efficiency detection device according to claim 1, wherein A quick connector adapted to the outlet end of the flue gas pipeline is connected to the inlet end of the inlet pipeline.

7. The catalyst filter tube denitration efficiency detection device according to claim 1, characterized in that, A control cabinet is arranged on the cylinder body, and the control cabinet is connected to the heater.

8. The catalyst filter tube denitration efficiency detection device according to claim 1, characterized in that, A negative pressure centrifugal fan is connected to the outlet end of the outlet pipeline.

9. The catalyst filter tube denitration efficiency detection device according to claim 1, characterized in that, A partition plate is arranged on the cylinder body at a position close to the sealing cover plate, and a filter tube installation hole is arranged on the partition plate. The catalyst filter tubes pass through the partition plate installation hole; A pressing plate is arranged outside the outlet end of the catalyst filter tube, and the pressing plate and the partition plate are fixedly connected together by bolts.

10. The catalyst filter tube denitration efficiency detection device according to claim 1, wherein, The detection device is installed on a movable platform.

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