CN212821679U - Waste gas filtering system for medicine synthesis - Google Patents
Waste gas filtering system for medicine synthesis Download PDFInfo
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- CN212821679U CN212821679U CN202021675188.7U CN202021675188U CN212821679U CN 212821679 U CN212821679 U CN 212821679U CN 202021675188 U CN202021675188 U CN 202021675188U CN 212821679 U CN212821679 U CN 212821679U
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Abstract
The application relates to a waste gas filtering system used in medicine synthesis, which comprises a gas collecting hood, an exhaust pipe with one end connected with the upper end of the gas collecting hood, a liquid storage cylinder connected with the other end of the exhaust pipe, a filter cylinder fixedly connected with the top surface of the liquid storage cylinder, a circulating liquid pump connected with the liquid storage cylinder, a liquid supply pipe connected with a liquid outlet of the circulating liquid pump and with one end extending into the filter cylinder from the side surface along the radial direction, a plurality of spray branch pipes positioned at the top in the filter cylinder and communicated with the liquid supply pipe, a first filter layer arranged near the bottom of the filter cylinder, a demister arranged above the spray branch pipes in the filter cylinder, a fan with an air inlet end connected with the top of the filter cylinder; the liquid storage cylinder is communicated with the filter cylinder. The application belongs to the field of waste gas treatment equipment in medicine synthesis, and has the advantage that the filtering effect of organic waste gas is better so as to reduce the pollution of exhaust gas to the environment.
Description
Technical Field
The application relates to the field of waste gas treatment equipment in medicine synthesis, in particular to a waste gas filtering system used in medicine synthesis.
Background
At present, waste gas in drug synthesis is mainly divided into inorganic waste gas and organic waste gas, wherein the inorganic waste gas mainly comprises gases such as nitric oxide, hydrogen sulfide and ammonia gas, and the organic waste gas mainly comprises volatile gases such as amines, aldehydes, ethanol and acetone.
At present, common pharmaceutical manufacturers can use a simple liquid washing tower to filter the waste gas generated in the pharmaceutical synthesis. The axial flow fan and the exhaust pipeline inject the collected waste gas from the liquid tank at the bottom of the liquid washing tower, and the waste gas is discharged from the opening end at the top of the liquid washing tower after sequentially passing through the waste gas reaction solution in the liquid tank and the adsorption layer filled in the middle.
In view of the above-mentioned related art, the inventors consider that there is a drawback that the filtering effect of the organic exhaust gas is poor so that the discharged gas causes environmental pollution.
SUMMERY OF THE UTILITY MODEL
In order to improve the filtering effect of organic waste gas and reduce the pollution of the discharged gas to the environment, the application provides a waste gas filtering system used in medicine synthesis.
The application provides a waste gas filtration system for in medicine synthesis adopts following technical scheme:
a waste gas filtering system for medicine synthesis comprises a gas collecting hood, an exhaust pipe with one end connected with the upper end of the gas collecting hood, a liquid storage cylinder connected with the other end of the exhaust pipe, a filter cylinder fixedly connected with the top surface of the liquid storage cylinder, a circulating liquid pump connected with the liquid storage cylinder, a liquid supply pipe connected with a liquid outlet of the circulating liquid pump and with one end extending into the filter cylinder from the side along the radial direction, a plurality of spray branch pipes positioned at the top in the filter cylinder and communicated with the liquid supply pipe, a first filter layer arranged near the bottom of the filter cylinder, a demister arranged in the filter cylinder and positioned above the spray branch pipes, a fan with an air inlet end connected with the top of the filter cylinder and a;
the liquid storage cylinder is communicated with the filter cylinder.
Through adopting above-mentioned technical scheme, the gas collecting channel is arranged in collecting the waste gas in the medicine synthesis and is taken out under the effect that the fan increases atmospheric pressure and leaves, gets into from the liquid storage cylinder behind the blast pipe, then rises and gets into the cartridge filter, is filtered when passing through first filter layer and adsorbs partly. The circulating liquid pump sends the liquid in the liquid storage cylinder to the liquid supply pipe, the liquid is lifted to the spraying branch pipe, in the spraying process, the liquid reacts with the gas in the rising process, most of the gas is absorbed or reacts to generate non-pollution gas such as carbon dioxide, hydrochloric acid and the like, and the non-pollution gas is discharged out of the filter cylinder together with the air after passing through the demister, and finally is discharged from the chimney, so that the filtering effect of the organic waste gas is better to reduce the pollution of the finally discharged gas to the environment.
Preferably, the device also comprises an activated carbon box, and two ends of the activated carbon box are communicated with the exhaust pipe.
By adopting the technical scheme, the activated carbon filled in the activated carbon box can adsorb organic waste gases such as formaldehyde, acetaldehyde and the like in waste gases in medicine synthesis, so that the organic waste gas filtering effect of the waste gas filtering system is better.
Preferably, the size of the openings at the two ends of the activated carbon box is smaller than that of the opening at the middle of the activated carbon box.
Through adopting above-mentioned technical scheme, activated carbon box both ends opening is big, and middle opening is little, according to the venturi effect, can reduce the gas velocity of flow of waste gas in activated carbon box to make the more abundant partial organic waste gas in the absorption waste gas of activated carbon.
Preferably, a plurality of spray heads are arranged on the spray branch pipe.
Through adopting above-mentioned technical scheme, the setting of shower nozzle for liquid atomization effect is better, can increase solution and organic waste gas fully contact. In addition, the atomized liquid falls at a slower speed, so that the reaction time of the solution and the organic waste gas can be prolonged, the organic waste gas is filtered more, and the filtering effect of the waste gas filtering system is better.
Preferably, the device also comprises a plurality of shunting layers which are arranged in the filter cylinder and positioned between the first filter layer and the spray branch pipe;
and the shunting layer is uniformly provided with shunting holes communicated with the top surface and the bottom surface of the shunting layer.
Through adopting above-mentioned technical scheme, the reposition of redundant personnel hole in the reposition of redundant personnel layer can be with gas and liquid reposition of redundant personnel, makes fluidic velocity of flow more stable, and then makes waste gas by more abundant absorption in the cartridge filter.
Preferably, the central axes of the shunt holes in every two adjacent shunt layers are mutually obliquely intersected.
Through adopting above-mentioned technical scheme, when waste gas and liquid flow between the reposition of redundant personnel layer, the fluid flow direction can change, consequently the velocity of flow also can change thereupon to make waste gas and liquid fully contact and react in the reposition of redundant personnel hole, make waste gas by filterable effect better.
Preferably, a transparent observation window is arranged on the side face of the filter cylinder, and a thermometer is arranged on the inner wall of the transparent observation window.
Through adopting above-mentioned technical scheme, be convenient for the temperature of manual observation cartridge filter, when like summer, the temperature of the liquid in the filter cartridge generally can be higher than 25, and exceed 25, can influence the filter effect of some organic waste gas like acetone, therefore the thermometer in case the temperature that shows in the filter cartridge is too high, can add liquid and improve the velocity of flow of circulating fluid pump in the case filter cartridge filter at any time to make the temperature of liquid reduce, make acetone by filterable effect better.
Preferably, the height of the chimney from the ground is 15 meters to 20 meters.
Through adopting above-mentioned technical scheme, the chimney is higher apart from the emission that highly is favorable to tail gas on ground, prevents that waste gas from discharging the place that the crowd easily absorbed, causes the influence to people's health.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the gas collecting hood is used for collecting waste gas in medicine synthesis and is pumped away under the action of the blower for increasing the atmospheric pressure, the waste gas enters the liquid storage cylinder through the exhaust pipe, then rises into the filter cartridge, and part of organic waste gas is filtered and adsorbed when passing through the first filter layer. The circulating liquid pump sends the liquid in the liquid storage cylinder to the liquid supply pipe, the liquid is lifted to the spraying branch pipe, the liquid reacts with the gas in the rising process in the spraying process, most of the gas is absorbed or reacts to generate non-pollution gas such as carbon dioxide, hydrochloric acid and the like, and the gas are discharged out of the filter cylinder after passing through the demister and finally discharged from a chimney, so that the filtering effect of the organic waste gas is better to reduce the pollution of the finally discharged gas to the environment;
2. the activated carbon filled in the carbon box can adsorb organic waste gas such as formaldehyde, acetaldehyde and the like in waste gas in medicine synthesis, so that the organic waste gas filtering effect of the waste gas filtering system is better.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is a structural schematic diagram of a filter cartridge and a liquid storage cylinder in a cutaway mode in the embodiment of the application.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Description of reference numerals: 11. a gas-collecting hood; 21. an exhaust pipe; 31. a liquid storage cylinder; 41. a filter cartridge; 51. a circulating liquid pump; 52. a liquid supply tube; 53. spraying branch pipes; 42. a first filter layer; 61. a demister; 71. a fan; 81. a chimney; 22. an activated carbon box; 531. a spray head; 43. a shunt layer; 431. a shunt hole; 44. a transparent viewing window; 45. a thermometer.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 1 and 2, an exhaust gas filtering system for use in medical synthesis disclosed in the embodiments of the present application mainly includes a gas collecting hood 11, an exhaust pipe 21, a liquid storage cylinder 31, a filter cylinder 41, a first filter layer 42, a circulating liquid pump 51, a liquid supply pipe 52, a spray branch pipe 53, a demister 61, a fan 71, and a chimney 81.
The gas-collecting hood 11 can be a conical hood body, the opening size of the bottom end of the gas-collecting hood 11 is larger than that of the top end, and the top end of the gas-collecting hood 11 is in threaded connection with one end of the exhaust pipe 21 and communicated with the exhaust pipe. The gas-collecting hood 11 collects the exhaust gas generated in the medicine synthesis under the action of the air pressure difference.
Referring to fig. 1, the exhaust pipe 21 may be made of a metal pipe, and the other end of the exhaust pipe 21 is connected to the side surface of the liquid storage cylinder 31 by welding or screwing. Still set up activated carbon box 22 on blast pipe 21's the installation route, filled activated carbon in activated carbon box 22, activated carbon box 22's both ends all communicate with blast pipe 21, and the in-process that waste gas passed through can pass activated carbon box 22 in blast pipe 21, and the granule in partly organic waste gas such as acetaldehyde and some air in the waste gas can be adsorbed by the activated carbon in activated carbon box 22 to play preliminary filtration's effect.
Further, the size of the openings at the two ends of the activated carbon box 22 is smaller than the size of the opening at the middle thereof, that is, the two ends of the activated carbon box 22 have smaller cross sections and the middle cross section is larger. According to the venturi effect, the flow rate of the exhaust gas passing through the activated carbon tank 22 is slowed, thereby allowing the exhaust gas to be more sufficiently adsorbed by the activated carbon in the activated carbon tank 22.
Referring to fig. 1 and 2, the liquid storage cylinder 31 is a cylinder with an opening at the upper end, the liquid storage cylinder 31 is filled with an absorption liquid formed by mixing an absorbent and water, the absorbent mainly comprises a surfactant such as sodium citrate, epoxidized soybean oil, special oligomer and the like, an emulsifier, a coagulant and the like, and the content of the absorbent is 0.5 to 1 percent of the absorption liquid. The organic waste gas enters the liquid storage cylinder 31 from the exhaust port of the exhaust pipe 21, and finally enters the filter cylinder 41 from the top end of the liquid storage cylinder 31.
The filter cylinder 41 is a cylindrical cylinder, the bottom end of the filter cylinder 41 and the top end of the liquid storage cylinder 31 can be in threaded connection or welded, the top of the filter cylinder 41 is provided with an exhaust port, and the exhaust port of the filter cylinder 41 is communicated with the fan 71 through a PVC pipe.
Referring to fig. 2, the first filter layer 42 is disposed in the filter cartridge 41 near the bottom, the first filter layer 42 includes two horizontally spaced apart clamping plates welded to the inner wall of the filter cartridge 41, and the filter material disposed in the two clamping plates, which may be pall ring packing. The organic waste gas passes through the first filter layer 42 and is sufficiently contacted with the absorption liquid, and the absorption liquid is used for dissolving the organic waste gas by utilizing a similar compatibility principle.
In addition, the position that is located in the cartridge filter 41 between first filter layer 42 and spray branch 53 has still set up a plurality of diversion layers 43, and diversion layer 43 can be the cylinder that plastics were made in this application embodiment, and diversion layer 43 and the inner wall of cartridge filter 41 can be bolted connection, and the equipartition has on the diversion layer 43 with the communicating reposition of redundant personnel hole 431 of diversion layer 43 top surface and bottom surface, and reposition of redundant personnel hole 431 supplies organic waste gas and solution to pass through.
In addition, the distributing holes 431 on every two adjacent distributing layers 43 are arranged in a staggered manner, that is, the central axes of the distributing holes 431 on two adjacent distributing layers 43 are mutually obliquely intersected. This can increase the flow path and flow time of the organic exhaust gas and the absorption liquid between the flow dividing layers 43, so that the organic exhaust gas is filtered more effectively.
Referring to fig. 2 and 3, the supply rate of the circulating liquid pump and the addition of the absorption liquid are adjusted in time to facilitate observation of the ambient temperature in the filter cartridge 41. The side of the filter cartridge 41 is also provided with a transparent viewing window 44, and the transparent viewing window 44 can be bonded in a hole formed in the side wall of the filter cartridge 41 by using transparent plastic. The thermometer 45 is also screwed to the surface of the transparent window 44 on the inner side of the filter cartridge 41, and the temperature in the filter cartridge 41 can be visually reflected by observing the value on the thermometer 45.
The liquid inlet of the circulating liquid pump 51 is communicated with the liquid outlet of the liquid storage cylinder 31 through a water pipe, and the liquid outlet of the circulating liquid pump 51 is communicated with the liquid supply pipe 52. For pumping the absorption liquid in the liquid storage cylinder 31 into the liquid supply pipe 52.
Referring to fig. 1 and 2, the liquid supply pipe 52 may be a metal pipe, and one end of the liquid supply pipe 52 is upwardly routed in a vertical upward direction, and finally protrudes into the filter cartridge 41 from a position near the top of the filter cartridge 41, and is a closed end.
One end of the spraying branch pipe 53 is vertically communicated with the side surface of the liquid supply pipe 52, the other end of the spraying branch pipe 53 is closed, the side surface of the spraying branch pipe 53 is downward provided with a plurality of liquid spraying holes, the number of the spraying branch pipes 53 is multiple, and in the embodiment of the application, the number of the spraying branch pipes 53 is 4. In addition, the liquid spraying holes of each spraying branch pipe 53 are also in threaded connection with a spray head 531, and the spray heads 531 can atomize the absorption liquid into water mist to be sprayed out, so that the organic waste gas is better filtered.
Referring to fig. 2, the demister 61 is mainly composed of a plate, a supporting device, and the plate is usually made of a polymer material such as polypropylene PP, FRP, or the like. The device can collect and discharge the fog particles carried in the organic waste gas, and prevent acidic gas from being discharged from the filter cylinder 41 along with atomized liquid and finally entering the atmosphere to pollute the environment.
Referring to fig. 1, the blower 71 may be a suction fan, in this embodiment, the blower 71 is a centrifugal blower, an air inlet of the blower 71 is communicated with an air outlet at the top of the filter cartridge 41 through a PVC pipe or hose, and the other end of the blower 71 is communicated with a chimney 81.
The chimney 81 can be made of plastic pipe, and the top of the chimney 81 is also provided with a conical rain cover. In order to discharge the filtered exhaust air as high as possible from the floor to reduce the impact on the air quality of the human activity area, the height of the chimney 81 from the floor is typically 15 to 20 meters.
The implementation principle of the waste gas filtering system used in the medicine synthesis is as follows:
when a large amount of waste gas is generated in the medicine synthesis, the fan 71 and the circulating liquid pump 51 are firstly powered on, the gas collecting hood 11 collects the waste gas under the action of the fan 71 and enters the activated carbon box 22 through the exhaust pipe 21, and the activated carbon in the activated carbon box 22 primarily filters a part of organic waste gas and particles in the waste gas.
Then the residual waste gas enters the liquid storage cylinder 31 from the exhaust pipe 21, then enters the filter cylinder 41, sequentially passes through the first filter layer 42 and the flow dividing layer 43, meanwhile, the absorption liquid in the liquid storage cylinder 31 comes to a position close to the top of the filter cylinder 41 from the liquid supply pipe 52 under the action of the circulating liquid pump 51, and forms absorption liquid spray through the spraying branch pipe 53, the absorption liquid moves downwards under the action of gravity, is dissolved with the organic waste gas, and is filtered again for the organic waste gas, and finally the filtered waste gas passes through the demister 61 and the chimney 81 under the action of the fan 71 and then is discharged into the air.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. An exhaust gas filtration system for use in medical synthesis, comprising: the device comprises a gas collecting hood (11), an exhaust pipe (21) with one end connected with the upper end of the gas collecting hood (11), a liquid storage cylinder (31) connected with the other end of the exhaust pipe (21), a filter cylinder (41) fixedly connected with the top surface of the liquid storage cylinder (31), a circulating liquid pump (51) connected with the liquid storage cylinder (31), a liquid supply pipe (52) connected with a liquid discharge port of the circulating liquid pump (51) and with one end extending into the filter cylinder (41) from the side surface along the radial direction, a plurality of spraying branch pipes (53) positioned at the top in the filter cylinder (41) and communicated with the liquid supply pipe (52), a first filter layer (42) arranged at the bottom of the filter cylinder (41), a demister (61) arranged in the filter cylinder (41) and positioned above the spraying branch pipes (53), a fan (71) with a gas inlet end communicated with the top of the filter cylinder (41) and a;
the liquid storage cylinder (31) is communicated with the filter cylinder (41).
2. An exhaust gas filtering system for use in medical synthesis as claimed in claim 1, wherein: and the device also comprises an activated carbon box (22) with two ends communicated with the exhaust pipe (21).
3. An exhaust gas filtering system for use in medical synthesis according to claim 2, wherein: the size of the openings at the two ends of the activated carbon box (22) is smaller than that of the opening at the middle of the activated carbon box.
4. An exhaust gas filtering system for use in medical synthesis as claimed in claim 1, wherein: and a plurality of spray heads (531) are arranged on the spray branch pipe (53).
5. An exhaust gas filtering system for use in medical synthesis as claimed in claim 1, wherein: also comprises a plurality of diversion layers (43) which are arranged in the filter cylinder (41) and positioned between the first filter layer (42) and the spray branch pipes (53);
and the shunting layer (43) is uniformly provided with shunting holes (431) communicated with the top surface and the bottom surface of the shunting layer.
6. An exhaust gas filtering system for use in medical synthesis according to claim 5, wherein: the central axes of the shunting holes (431) on every two adjacent shunting layers (43) are mutually obliquely intersected.
7. An exhaust gas filtering system for use in medical synthesis according to claim 1 or 5, wherein: and a transparent observation window (44) is arranged on the side surface of the filter cylinder (41), and a thermometer (45) is arranged on the inner wall of the transparent observation window (44).
8. An exhaust gas filtering system for use in medical synthesis as claimed in claim 1, wherein: the height of the chimney (81) from the ground is 15-20 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021675188.7U CN212821679U (en) | 2020-08-12 | 2020-08-12 | Waste gas filtering system for medicine synthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021675188.7U CN212821679U (en) | 2020-08-12 | 2020-08-12 | Waste gas filtering system for medicine synthesis |
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| Publication Number | Publication Date |
|---|---|
| CN212821679U true CN212821679U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021675188.7U Expired - Fee Related CN212821679U (en) | 2020-08-12 | 2020-08-12 | Waste gas filtering system for medicine synthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117085450A (en) * | 2023-10-19 | 2023-11-21 | 上海依可美节能技术有限公司 | Efficient recycling treatment equipment and treatment method for organic waste gas treatment |
-
2020
- 2020-08-12 CN CN202021675188.7U patent/CN212821679U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117085450A (en) * | 2023-10-19 | 2023-11-21 | 上海依可美节能技术有限公司 | Efficient recycling treatment equipment and treatment method for organic waste gas treatment |
| CN117085450B (en) * | 2023-10-19 | 2023-12-15 | 上海依可美节能技术有限公司 | Efficient recycling treatment equipment and treatment method for organic waste gas treatment |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210330 Termination date: 20210812 |
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| CF01 | Termination of patent right due to non-payment of annual fee |