Dust-recoverable high-temperature airflow separation device

Abstract

The utility model discloses a dust recoverable high-temperature airflow separation device which comprises a shell, an ash bucket is connected to the bottom of the shell, an airflow distributor and a gas phase filter are connected to the inner wall of the shell, the airflow distributor is arranged in the middle of the gas phase filter, a process gas inlet is formed in the side wall of the shell and connected with the airflow distributor through a flue, and the gas phase filter is arranged in the process gas inlet. A process gas outlet is formed in the top of the shell, a first nitrogen reverse blowing opening and a second nitrogen reverse blowing opening are formed in the side wall of the shell, the first nitrogen reverse blowing opening and the second nitrogen reverse blowing opening are connected with a blowing mechanism, the blowing mechanism penetrates through the side wall of the shell, and the blowing mechanism is arranged close to the gas phase filter. According to the utility model, when airflow passes through, dust is intercepted on the outer surface of the filter element, and the airflow is discharged from the exhaust port above the device, so that high-temperature airflow filtration is realized, and the dust is recycled.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas collection and treatment equipment, and particularly relates to a dust-recyclable high-temperature gas flow separation device. Background Technique

[0002] In many industrial production processes, high-temperature gas flows are generated, which often contain various impurity particles or gases with different components. When traditional separation devices are used to process high-temperature gas flows, there are often problems such as low separation efficiency, easy damage to equipment, and high operating costs.

[0003] These impurity particles are production dust formed during industrial production, which are solid particles that can float in the air for a long time. After the formation of many production dusts, other gaseous or liquid harmful substances can often be adsorbed on the surface, becoming carriers of other harmful substances. Production dust pollutes the working environment, affects the physical and mental health of workers, and in severe cases, it will cause the entire chemical production process to stagnate, pose safety hazards, and bring certain economic losses to the enterprise.

[0004] In the prior art, dust collection is usually carried out in areas with a large amount of dust, and the collected dusts are all placed in one place. Due to the different sizes of dust particles, it is difficult to collect and use dust particles with different diameters at the same time, reducing the dust recovery utilization rate. Moreover, due to incomplete dust collection, the dust emission pollution is relatively large, affecting the atmospheric environment and increasing production safety hazards. Content of the Utility Model

[0005] The purpose of the utility model is to provide a dust-recyclable high-temperature gas flow separation device, which can accurately separate high-temperature gas flows.

[0006] The technical solution adopted by the utility model is that a dust-recyclable high-temperature gas flow separation device includes a housing, a hopper is connected to the bottom of the housing, an air flow distributor and a gas phase filter are connected to the inner wall of the housing, the air flow distributor is arranged in the middle of the gas phase filter, a process gas inlet is provided on the side wall of the housing, the process gas inlet is connected to the air flow distributor through a flue, a process gas outlet is provided on the top of the housing, a first nitrogen back-blowing port and a second nitrogen back-blowing port are provided on the side wall of the housing, the first nitrogen back-blowing port and the second nitrogen back-blowing port are connected to a purging mechanism, the purging mechanism passes through the side wall of the housing, and the purging mechanism is arranged close to the gas phase filter.

[0007] The characteristics of the utility model also lie in:

[0008] The gas phase filter is connected to the inner wall of the housing through a tray, and the tray is connected to the middle of the inner wall of the housing.

[0009] The purging mechanism includes a nitrogen gas storage tank, which is connected to an inlet pipe. The nitrogen gas storage tank is also connected to a number of purging pipes, which are respectively connected to the first nitrogen gas back-blowing port and the second nitrogen gas back-blowing port. A pneumatic butterfly valve is connected to the body of each purging pipe. The inner wall of the housing is connected to a nitrogen gas collecting header, which is connected to the first nitrogen gas back-blowing port and the second nitrogen gas back-blowing port through a connecting pipe. The nitrogen gas collecting header is connected to a nozzle, which is oppositely arranged with the gas-phase filter. The nitrogen gas storage tank is also connected to a pressure transmitter.

[0010] On the side wall of the housing where the first nitrogen gas back-blowing port is opened, there are a manhole, a thermometer port and a spare port. A thermometer is connected at the thermometer port.

[0011] On the side walls of the ash hopper, there are respectively a first level gauge port and a second level gauge port. The first level gauge port is close to the bottom of the ash hopper. Level gauges are connected at both the first level gauge port and the second level gauge port. A slag discharge port is opened at the bottom of the ash hopper, and a slag discharge pipe is connected to the slag discharge port.

[0012] On the top of the housing, there are also a relief port and a first differential pressure gauge port. The process gas outlet is arranged between the relief port and the first differential pressure gauge port. A process gas outlet pipe is connected to the process gas outlet, a relief pipe is connected to the relief port, and a process gas inlet pipe is connected to the process gas inlet.

[0013] On the side wall of the housing, there is a differential pressure transmitter interface, which is connected to a differential pressure transmitter through a pipeline. The two ends of the pipeline are respectively arranged on both sides of the gas-phase filter. On the side wall of the housing, there are also a blowing port and a second differential pressure gauge port. The blowing port is arranged close to the process gas inlet.

[0014] Lifting lugs are connected to the opposite side walls of the housing, and a nameplate is also connected to the side wall of the housing.

[0015] The beneficial effects of the present utility model are as follows:

[0016] For the dust recoverable high-temperature gas separation device of the present utility model, when processing high-temperature gas, it can achieve uniform gas distribution, effectively improve the separation efficiency and has low operating cost; it can effectively intercept dust and collect and store the dust. The bottom of the device can be connected to an artificial / scraper conveyor / pneumatic ash conveying system to collect the dust that needs to be recycled and reused cleanly, achieving zero environmental pollution; during use, the filter element is timely back-blown with clean nitrogen gas to maintain the filtering performance of the filter element, improve the service life of the device, and at the same time, a nitrogen gas collecting header is set to achieve constant-pressure back-blowing of the filter element, greatly reducing the labor cost. Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of the dust recoverable high-temperature gas separation device of the present utility model;

[0018] Figure 2 It is a process flow diagram of the dust recoverable high-temperature gas separation device of the present utility model.

[0019] In the figure: 1. Process gas outlet, 2. Venting port, 3. First nitrogen back-blowing port, 4. Second nitrogen back-blowing port, 5. Lifting lug, 6. Manhole, 7. Thermometer port, 8. Spare port, 9. Ash hopper, 10. Slag discharge port, 11. First level gauge port, 12. Second level gauge port, 13. Process gas inlet, 14. Blowing port, 15. Second differential pressure gauge port, 16. Gas-phase filter, 17. Tray, 18. Nozzle, 19. Nitrogen gas collecting header, 20. Nameplate, 21. First differential pressure gauge port, 22. Inlet pipe, 23. Pressure transmitter, 24. Nitrogen gas storage tank, 25. Pneumatic butterfly valve, 26. Thermometer, 27. Slag discharge pipe, 28. Level gauge, 29. Process gas inlet pipe, 30. Differential pressure transmitter, 31. Process gas outlet pipe, 32. Venting pipe, 33. Shell, 34. Airflow distributor, 35. Connecting pipe, 36. Purge pipe. Specific embodiments

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] The present invention provides a dust-recyclable high-temperature gas flow separation device, as Figure 1-2 shown, including a shell 33, the bottom of the shell 33 is connected with an ash hopper 9, the inner wall of the shell 33 is connected with an airflow distributor 34 and a gas-phase filter 16, the airflow distributor 34 is arranged in the middle of the gas-phase filter 16, a process gas inlet 13 is opened on the side wall of the shell 33, the process gas inlet 13 is connected with the airflow distributor 34 through a flue, a process gas outlet 1 is opened at the top of the shell 33, a first nitrogen back-blowing port 3 and a second nitrogen back-blowing port 4 are opened on the side wall of the shell 33, the first nitrogen back-blowing port 3 and the second nitrogen back-blowing port 4 are connected with a purging mechanism, the purging mechanism passes through the side wall of the shell 33, and the purging mechanism is arranged close to the gas-phase filter 16. High-temperature process gas enters the flue from the process gas inlet 13, passes through the airflow distributor 34, so that the airflow is evenly distributed, effectively improving the separation efficiency. The evenly distributed airflow passes through the gas-phase filter 16 from bottom to top for filtration. The filter screen on the filter element of the gas-phase filter 16 can prevent dust from floating upward and discharging through the exhaust port. The filtered airflow is discharged from the process gas outlet 1 at the top of the device. After the airflow passing through the airflow distributor 34 has a uniform and stable flow rate, it can avoid a large amount of forward airflow from impacting the dust attached to the filter element, so that the dust is repeatedly suspended on the surface of the filter element, making the dust unable to settle by gravity and the airflow unable to pass through the filtering device efficiently. The setting of the airflow distributor 34 greatly improves the dust removal efficiency of the device. The particles in the airflow are intercepted outside the filter element, and some particles directly fall into the lower ash hopper 9 under the action of gravity, and some particles attached to the filter element are purged by the purging mechanism and thus fall off from the filter element.

[0022] Example 1

[0023] The gas-phase filter 16 is connected to the inner wall of the housing 33 through the tray 17, and the tray 17 is connected to the middle part of the inner wall of the housing 33. The gas-phase filter 16 uses a high-temperature precision filter and a heat-resistant metal filter element. The filter element is made of 316L material, and its service life is significantly higher than that of ordinary filter elements. The gas-phase filter 16 is connected to the middle of the housing 33 through the tray 17. The air flow passes through the outer surface of the filter element from bottom to top, and the filter screen on the filter element can prevent dust from floating upward and being discharged through the exhaust port.

[0024] Example 2

[0025] The purging mechanism includes a nitrogen gas storage tank 24. The nitrogen gas storage tank 24 is connected with an inlet pipe 22. The nitrogen gas storage tank 24 is also connected with a plurality of purging pipes 36. The purging pipes 36 are respectively connected with the first nitrogen gas back-blowing port 3 and the second nitrogen gas back-blowing port 4. A pneumatic butterfly valve 25 is connected to the pipe body of each purging pipe 36. The inner wall of the housing 33 is connected with a nitrogen gas collecting header 19. The nitrogen gas collecting header 19 is connected with the first nitrogen gas back-blowing port 3 and the second nitrogen gas back-blowing port 4 through a connecting pipe 35. The nitrogen gas collecting header 19 is connected with a nozzle 18. The nozzle 18 is arranged opposite to the gas-phase filter 16. The nitrogen gas storage tank 24 is also connected with a pressure transmitter 23. A plurality of nozzles 18 are provided, and the plurality of nozzles 18 are evenly connected to the nitrogen gas collecting header 19. During the use of the filter element of the gas-phase filter 16, the outer surface will be covered with dust, and it is necessary to back-blow with clean nitrogen gas in time to maintain the filtering performance of the filter element. The clean nitrogen gas used for purging is stored in the nitrogen gas storage tank, and passes through the purging pipe 36, the connecting pipe 35 and the nitrogen gas collecting header 19 to back-blow the filter element of the gas-phase filter 16.

[0026] Example 3

[0027] The side wall of the housing 33 where the first nitrogen gas back-blowing port 3 is opened is provided with a manhole 6, a thermometer port 7 and a spare port 8. A thermometer 26 is connected at the thermometer port 7. It is used to observe and measure the parameters inside the housing 33.

[0028] The side walls of the ash hopper 9 are respectively provided with a first level gauge port 11 and a second level gauge port 12. The first level gauge port 11 is close to the bottom of the ash hopper 9. Level gauges 28 are connected at both the first level gauge port 11 and the second level gauge port 12. A slag discharge port 10 is opened at the bottom of the ash hopper 9, and the slag discharge port 10 is connected with a slag discharge pipe 27. The conical ash hopper 9 is used to temporarily store ash and slag, and level gauges 28 are arranged at the level gauge ports 11 and 12 to monitor the ash and slag inventory. The slag discharge port 10 at the bottom of the ash hopper 9 can be connected to a manual / scraper conveyor / pneumatic ash conveying system to be discharged from the slag discharge pipe 27, and the dust is recycled regularly.

[0029] The top of the housing 33 is also provided with a relief opening 2 and a first differential pressure gauge port 21. The process gas outlet 1 is arranged between the relief opening 2 and the first differential pressure gauge port 21. The process gas outlet 1 is connected with a process gas outlet pipe 31. The relief opening 2 is connected with a relief pipe 32. The process gas inlet 13 is connected with a process gas inlet pipe 29. The airflow in the device is discharged from the process gas outlet 1 through the process gas outlet pipe 31.

[0030] A differential pressure transmitter interface is provided on the side wall of the housing 33. The differential pressure transmitter interface is connected with a differential pressure transmitter 30 through a pipeline. The two ends of the pipeline are respectively arranged on both sides of the gas-phase filter 16. A blowing port 14 and a second differential pressure gauge port 15 are also provided on the side wall of the housing 33. The blowing port 14 is arranged close to the process gas inlet 13. The two ends of the pipeline are respectively close to the top and the middle of the housing 33, which is convenient for the differential pressure transmitter 30 to measure the differential pressure in the device. Since the connection between the process gas inlet 13 and the flue is a dead angle, some dust will accumulate and needs to be purged regularly. The purging is carried out through the blowing port 14.

[0031] Lifting lugs 5 are connected to the opposite side walls of the housing 33. A nameplate 20 is also connected to the side wall of the housing 33. It is convenient to hoist and move the device through the lifting lugs 5.

[0032] The working principle of the dust-recyclable high-temperature airflow separation device of the present utility model is as follows:

[0033] The high-temperature process gas enters the flue from the process gas inlet 13, passes through the airflow distributor 34 to make the airflow evenly distributed, effectively improving the separation efficiency. The evenly distributed airflow passes through the gas-phase filter 16 from bottom to top for filtration. The filtered airflow is discharged from the process gas outlet 1 at the top of the device. The particles in the airflow are intercepted outside the filter element of the gas-phase filter 16. Some particles directly fall into the ash hopper 9 below under the action of gravity. The slag discharge port 10 at the bottom of the ash hopper 9 can be connected to manual / scraper / pneumatic ash conveying system to discharge from the slag discharge pipe 27, and the dust is recycled regularly. Some particles attached to the filter element are purged by the purging mechanism and thus fall off from the filter element.

[0034] For the dust-recyclable high-temperature airflow separation device of the present utility model, aiming at the high-temperature gas-phase filter, in order to ensure the efficient separation of dust in the process gas, a dust cleaning system is added to the filter element to realize the online dust cleaning function. It can ensure that when the airflow passes through, the dust is intercepted on the outer surface of the filter element, and the airflow is discharged from the exhaust port above the device, thus realizing the high-temperature airflow filtration, recycling the dust, and performing reverse blowing and dust cleaning on the filter element for periodic dust cleaning. A dust hopper, an electric slide gate valve, and a discharge valve are provided at the bottom of the device, and methods such as ton bags / scrapers / pneumatic ash conveying are set for automatic ash conveying for resource utilization.

Claims

1. Dust recyclable high-temperature gas separation device, characterized in that, It includes a housing (33), a hopper (9) is connected to the bottom of the housing (33), an air flow distributor (34) and a gas-phase filter (16) are connected to the inner wall of the housing (33), the air flow distributor (34) is arranged in the middle of the gas-phase filter (16), a process gas inlet (13) is provided on the side wall of the housing (33), the process gas inlet (13) is connected to the air flow distributor (34) through a flue, a process gas outlet (1) is provided on the top of the housing (33), a first nitrogen backflush port (3) and a second nitrogen backflush port (4) are provided on the side wall of the housing (33), the first nitrogen backflush port (3) and the second nitrogen backflush port (4) are connected with a purging mechanism, the purging mechanism penetrates through the side wall of the housing (33), and the purging mechanism is arranged close to the gas-phase filter (16).

2. The dust recoverable high-temperature gas flow separation device according to claim 1, characterized in that, The gas-phase filter (16) is connected to the inner wall of the housing (33) through a tray (17), and the tray (17) is connected to the middle of the inner wall of the housing (33).

3. The dust-recyclable high-temperature gas separation device according to claim 2, characterized in that The purging mechanism includes a nitrogen gas storage tank (24), an inlet pipe (22) is connected to the nitrogen gas storage tank (24), the nitrogen gas storage tank (24) is also connected with a plurality of purging pipes (36), the purging pipes (36) are respectively connected with the first nitrogen backflush port (3) and the second nitrogen backflush port (4), a pneumatic butterfly valve (25) is connected to the body of each purging pipe (36), a nitrogen gas collecting bag (19) is connected to the inner wall of the housing (33), the nitrogen gas collecting bag (19) is connected with the first nitrogen backflush port (3) and the second nitrogen backflush port (4) through a connecting pipe (35), a nozzle (18) is connected to the nitrogen gas collecting bag (19), the nozzle (18) is arranged opposite to the gas-phase filter (16), and a pressure transmitter (23) is also connected to the nitrogen gas storage tank (24).

4. The dust recoverable high-temperature gas flow separation device according to claim 1, wherein, A manhole (6), a thermometer port (7) and a spare port (8) are provided on the side wall of the housing (33) where the first nitrogen backflush port (3) is provided, and a thermometer (26) is connected at the thermometer port (7).

5. The dust recoverable high-temperature gas flow separation device according to claim 1, wherein, A first level gauge port (11) and a second level gauge port (12) are respectively provided on the side wall of the hopper (9), the first level gauge port (11) is close to the bottom of the hopper (9), level gauges (28) are connected at both the first level gauge port (11) and the second level gauge port (12), a slag discharge port (10) is provided at the bottom of the hopper (9), and a slag discharge pipe (27) is connected to the slag discharge port (10).

6. The dust recoverable high-temperature gas flow separation device according to claim 1, wherein A vent port (2) and a first differential pressure gauge port (21) are also provided on the top of the housing (33), the process gas outlet (1) is arranged between the vent port (2) and the first differential pressure gauge port (21), a process gas outlet pipe (31) is connected to the process gas outlet (1), a vent pipe (32) is connected to the vent port (2), and a process gas inlet pipe (29) is connected to the process gas inlet (13).

7. The dust recoverable high-temperature gas flow separation device according to claim 1, wherein A differential pressure transmitter interface is provided on the side wall of the housing (33). The differential pressure transmitter interface is connected to a differential pressure transmitter (30) through a pipeline. The two ends of the pipeline are respectively arranged on both sides of the gas-phase filter (16). A blowing port (14) and a second differential pressure gauge port (15) are also provided on the side wall of the housing (33). The blowing port (14) is arranged close to the process gas inlet (13).

8. The dust recoverable high-temperature gas flow separation device according to claim 1, wherein Lifting lugs (5) are connected to the opposite side walls of the housing (33). A nameplate (20) is also connected to the side wall of the housing (33).

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