CN117101387A - Polyamide resin production waste gas treatment equipment and treatment process - Google Patents
Polyamide resin production waste gas treatment equipment and treatment process Download PDFInfo
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- CN117101387A CN117101387A CN202311259605.8A CN202311259605A CN117101387A CN 117101387 A CN117101387 A CN 117101387A CN 202311259605 A CN202311259605 A CN 202311259605A CN 117101387 A CN117101387 A CN 117101387A
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- waste gas
- packing
- filler
- cavity
- pipe
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- 239000002912 waste gas Substances 0.000 title claims abstract description 70
- 229920006122 polyamide resin Polymers 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 13
- 239000000945 filler Substances 0.000 claims abstract description 89
- 238000012856 packing Methods 0.000 claims abstract description 87
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 239000007921 spray Substances 0.000 claims abstract description 38
- 239000007789 gas Substances 0.000 claims abstract description 24
- 238000010521 absorption reaction Methods 0.000 claims description 25
- 230000000670 limiting effect Effects 0.000 claims description 23
- 238000005192 partition Methods 0.000 claims description 18
- 238000005507 spraying Methods 0.000 claims description 16
- 238000007667 floating Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 8
- 235000014676 Phragmites communis Nutrition 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 7
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 239000007779 soft material Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 3
- 238000004891 communication Methods 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 description 9
- 239000012855 volatile organic compound Substances 0.000 description 6
- 230000005611 electricity Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The application relates to the technical field of waste gas treatment equipment, and particularly discloses waste gas treatment equipment for polyamide resin production, which comprises a shell, wherein a plurality of filler layer devices and spray layer devices are arranged in the shell, a plurality of filler cavities are arranged in the filler layer devices and are distributed in a stepped manner from outside to inside, spherical fillers are placed in the filler cavities, a vertical pipe is fixedly sleeved in the middle of the filler layer devices, and a notch communicated with the innermost filler cavity is formed in the vertical pipe. Through the stepwise design of the packing cavity from outside to inside, and the new spherical packing is added from the outermost packing cavity, during long-time treatment, after each spherical packing movement, the circulation paths of waste gas and solution are changed, so that the spherical packing can be contacted with liquid and generate turbulence when moving, the mixing of gas and liquid is promoted, and the problem that the single path of the circulation paths of waste gas and solution is blocked to influence the subsequent waste gas treatment efficiency is avoided.
Description
Technical Field
The application relates to the technical field of waste gas treatment equipment, in particular to waste gas treatment equipment and treatment technology for polyamide resin production.
Background
Polyamide resins are synthetic resins which are produced by polymerization of oleic acid as a main raw material and have excellent adhesive properties, and are thus often used for the production of plastic inks, and during the production of polyamide resins, exhaust gases are generated, which include harmful gases such as Volatile Organic Compounds (VOCs), nitrogen oxides, ammonia, hydrogen sulfide, and the like, and the harmful gases need to be treated.
The existing waste gas treatment generally uses a spray tower for treatment, however, when the existing spray tower is used for treating harmful gas in waste gas, the surfaces of filler balls in a filler layer are covered by pollutants in the long-time use process, the surface area and the porosity of the filler balls are affected, the path of waste gas and absorption liquid flowing through gaps among the filler balls is single, the gaps among the filler balls are blocked by particles or sediments, so that the gas-liquid flow is blocked, and the treatment efficiency of the waste gas is also affected.
Disclosure of Invention
The application provides a waste gas treatment device and a treatment process for polyamide resin production, which have the advantages of high waste gas treatment efficiency and high utilization rate of filler balls, and are used for solving the problem that a filler layer is easy to block in the existing waste gas treatment device.
In order to achieve the above purpose, the application adopts the following technical scheme: the utility model provides a polyamide resin production exhaust treatment equipment, includes the shell, and the bottom switch-on of shell side has the intake pipe, and the middle part switch-on shell top has the blast pipe, and the inside of shell is equipped with a plurality of layers packing layer device and sprays layer device, and every sprays layer device and set up respectively in the top of every packing layer device, be equipped with a plurality of packing cavities in the packing layer device, and the packing cavity is the echelonment from outer to inner and distribute, is used for placing spherical packing in the packing cavity, the fixed cover in middle part of packing layer device is equipped with the standpipe, set up the notch that communicates innermost packing cavity on the standpipe, the side switch-on of shell has the conveying pipeline that communicates outermost packing cavity, the outside movable sleeve of standpipe is equipped with the packing sleeve plate that is used for shutoff notch, the outside fixedly connected with of packing sleeve plate is used for carrying out spacing grid net to the spherical packing that moves up in the packing cavity, the fixed cover in the outside of packing sleeve plate is equipped with the kicking block that is located spacing grid net top.
Further, the packing layer device comprises supporting grating plates fixedly mounted inside the shell, the supporting grating plates are in the shape of inverted round tables, wall thickness values of all parts of the supporting grating plates are identical, a plurality of partition plates are fixedly mounted at the top of each supporting grating plate, the number of the partition plates is not less than two, the partition plates are distributed at the top of each supporting grating plate from outside to inside, a packing cavity is formed by the partition plates and the supporting grating plates, and the vertical pipes are fixedly sleeved with the supporting grating plates.
Further, the inside fixed cover of shell is equipped with the holding ring board that is located the baffle top, and the interval value of the bottom of holding ring board and support grid board top is the same with the high value of baffle, spacing grid net sets up between holding ring board and excluder cover board, and the material of spacing grid net is the soft material of high temperature and corrosion resistance.
Further, dense through holes are formed in the partition plate, and the ports of the through holes are obliquely arranged from outside to inside.
Further, the outside fixed cover of standpipe is equipped with the spacing ring piece, is equipped with two elastic devices between spacing ring piece and the kicking block, and two elastic devices divide to establish in the both sides of standpipe, elastic devices includes the body, the both ends of body all are equipped with the end cover, the top of body and the bottom fixed connection of elastic devices, and the inside movable sleeve of body is equipped with the piston, be equipped with the spring between the top of piston and the body top end cover, the bottom fixedly connected with push away the axle of piston, push away the outside of the bottom extension body bottom of axle and with the top fixed connection of kicking block.
Further, logical groove has all been seted up to the both sides of piston, and the bottom fixed mounting of one of them body top end cover has spacing axle, and spacing axle is located the inboard of spring, the bottom of spacing axle is equipped with two separate conductive terminal, and two conductive terminal electricity are connected with the wire respectively, and the wire extends the outside of shell and electricity is connected with the warning light, and the crust parcel of wire has high temperature resistant corrosion resistant's protective sheath, the top of piston is equipped with conductive reed, two wires.
Further, the number of the conveying pipes is the same as that of the packing layer devices, each conveying pipe is respectively communicated with the outermost packing cavity in the corresponding packing layer device, one end, far away from the packing cavity, of each conveying pipe is communicated with a conveying box, and a fan is arranged on one side of each conveying box.
Further, the spray layer device comprises a group of spray pipes, the number of each spray pipe is not less than two, each two spray pipes are communicated through a positioning pipe, a plurality of spray heads are arranged at the bottom of each spray pipe, the number of the spray heads is not less than six, and a plurality of spray heads are distributed at the bottom of each spray pipe in a circumferential array.
Further, the collection chamber that is located the shell inboard has been seted up at the top of base, the top fixed mounting of base has the apron, the top fixed mounting of apron has the limit cover, the middle part of limit cover cup joints with the bottom fixed of standpipe, and the inner chamber and the collection chamber intercommunication of standpipe, the top of standpipe is equipped with hemispherical sealing plug, the row's silo in the intercommunication collection chamber has been seted up to one side of base, and is equipped with the filter screen of slope in the collection chamber, the bottom of filter screen is located row's silo department, and the outside of base is equipped with the transparent lid of shutoff row's silo, the bottom switch-on of base has the collecting pipe.
A treatment process of a polyamide resin production waste gas treatment apparatus, the treatment process of the polyamide resin production waste gas treatment apparatus comprising:
s1, firstly introducing waste gas generated in the production of polyamide resin into a shell through an air inlet pipe, then introducing absorption liquid for purifying harmful gases in the waste gas through a liquid inlet pipe, namely, when the treatment equipment is used for treating volatile organic compounds in the waste gas in the process flow stage, correspondingly selectively introducing the absorption liquid for absorbing the volatile organic compounds, and treating the waste gas in the same way if ammonia in the waste gas is treated.
S2, the waste gas enters the packing cavity through the supporting grating plate, meanwhile, the waste gas absorption liquid enters the spraying pipe through the liquid inlet pipe and is finally sprayed downwards by each spray head, the absorption liquid is sprayed to the spherical packing surface in the packing cavity and flows downwards to fully contact and react with the waste gas rising in the packing cavity, and therefore harmful gas in the waste gas is purified.
S3, with the continuous proceeding of waste gas purification, after the part contacted by the spherical filler gas-liquid is blocked, the sprayed absorption liquid is converged to the innermost filler cavity under the action of gravity until the buoyancy of the absorption liquid to the floating block overcomes the elasticity of the spring, so that the floating block moves upwards, after the floating block contacts with the flange part at the top of the isolating plate, the isolating plate and the inner ring part of the limiting grid net are driven to move upwards simultaneously, thereby opening the notch, simultaneously the limiting effect of the limiting grid net at the top of the isolating plate disappears, and under the actions of rising and flowing through the through hole, the spherical filler close to the outer layer moves towards the lower inner filler cavity after being blown by the air flow, and simultaneously the conductive reed on the piston contacts with the conductive terminal below the limiting shaft, so that the warning lamp is electrified and blinks.
S4, spherical fillers in the innermost filler cavity in the shell fall into the vertical pipe through the notch and fall to the discharge groove through the filter screen, so that an operator can observe the spherical fillers falling at the discharge groove through the transparent cover, and some absorption liquid falling into the vertical pipe along with the spherical fillers falls below the filter screen.
S5, according to the flickering of the warning lamp and the spherical filler falling to the discharge groove, an operator starts a fan to convey the new spherical filler in the material conveying box to the outermost filler cavity in the corresponding filler layer device, and the new spherical filler is uniformly distributed in the filler cavity by utilizing the air flow blown by the fan, so that the operation is performed reciprocally.
The application has the beneficial effects that:
according to the equipment and the process for treating the waste gas produced by the polyamide resin, through the stepped design of the packing cavities from outside to inside, and the new spherical packing is added into the outermost packing cavity, after each spherical packing moves during long-time treatment, the circulation paths of waste gas and solution are changed, so that the spherical packing can contact with liquid and generate turbulence when moving, the mixing of the gas and the liquid is promoted, harmful gas in the gas is better dissolved into the liquid, the problem that the circulation paths of the waste gas and the solution are blocked in a single path to influence the subsequent waste gas treatment efficiency is avoided, and meanwhile, the contact position of the gas and the liquid is changed after the spherical packing moves, so that the surface of the spherical packing is fully utilized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
The application may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view showing a sectional structure of an exhaust gas treatment apparatus for polyamide resin production of the present application;
FIG. 2 is a schematic diagram of one of the packing layer device and the spray layer device in FIG. 1;
FIG. 3 is a schematic view of the elastic device in FIG. 2;
fig. 4 is a schematic view of a partial enlarged structure at a in fig. 2.
In the figure:
1. a housing; 2. a base; 3. an air inlet pipe; 4. an exhaust pipe; 5. a shower pipe; 6. positioning the catheter; 7. a spray head; 8. a liquid inlet pipe; 9. supporting the grating plate; 10. a partition plate; 101. a through hole; 11. a spacing grid mesh; 12. a standpipe; 121. a notch; 13. a packing sleeve plate; 14. a floating block; 15. positioning ring plates; 16. a limiting ring block; 17. an elastic device; 171. a tube body; 172. a piston; 173. a spring; 174. pushing the shaft; 175. a limiting shaft; 18. a material conveying pipe; 19. a feed box; 20. a blower; 21. a cover plate; 22. defining a sleeve; 23. a filter screen; 24. a discharge chute; 25. positioning a connecting shaft; 26. positioning an arc-shaped block; 27. and a warning lamp.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, an exhaust gas treatment device for polyamide resin production comprises a housing 1, wherein the housing 1 is fixedly arranged above a base 2, an air inlet pipe 3 is communicated with the bottom of the side surface of the housing 1, an air outlet pipe 4 is communicated with the middle of the top end of the housing 1, a plurality of filler layer devices are arranged in the housing 1, the number of layers of the filler layer devices is not less than two, the filler layer devices participate in fig. 2, the filler layer devices comprise support grid plates 9 fixedly arranged in the housing 1, the support grid plates 9 are in the shape of inverted truncated cones, the wall thickness values of the support grid plates 9 are the same, a plurality of baffle plates 10 are fixedly arranged at the top of the support grid plates 9, the number of the baffle plates 10 is not less than two, the baffle plates 10 and the support grid plates 9 form a filler cavity from outside to inside, the number of the filler cavity is one more than that of the baffle plates 10, the filler cavity is distributed from outside to inside in a step shape, the innermost filler cavity above the support grid plates 9 is positioned at the lowest, spherical filler cavities are placed in the filler cavity, the spherical filler cavities for reacting with a spherical exhaust gas and a spraying liquid can have a size of 38mm, a conventional size is 50mm, and the like.
The middle part of the supporting grating plate 9 is fixedly sleeved with a vertical pipe 12, a notch 121 communicated with the innermost filler cavity above the supporting grating plate 9 is formed in the vertical pipe 12, the outer side of the vertical pipe 12 is movably sleeved with a spacer plate 13, the bottom of the spacer plate 13 is designed to be an inclined plane matched with the top of the supporting grating plate 9, when the bottom of the spacer plate 13 contacts the top of the supporting grating plate 9, the spacer plate 13 seals the notch 121, and when the spacer plate 13 moves upwards to open the notch 121, spherical fillers in the filler cavity can enter the vertical pipe 12 through the notch 121 and be discharged, so that the spherical fillers can be replaced later.
The inside fixed cover of shell 1 is equipped with the holding ring board 15 that is located baffle 10 top, and the interval value of the bottom of holding ring board 15 and support grid board 9 top is the same with baffle 10's high value, fixedly connected with spacing grid net 11 between holding ring board 15 and the spacer board 13, the material of spacing grid net 11 is high temperature resistant and corrosion resistant soft material, the outside fixed cover of spacer board 13 is equipped with the kicking block 14, the material of kicking block 14 is high temperature resistant and corrosion resistant material, the outside fixed cover of standpipe 12 is equipped with spacing ring piece 16, be equipped with two elastic device 17 between spacing ring piece 16 and the kicking block 14, two elastic device 17 divide to establish in the both sides of standpipe 12.
Referring to fig. 2-3, the elastic device 17 includes a tube 171, end caps are disposed at two ends of the tube 171, the top of the tube 171 is fixedly connected with the bottom of the elastic device 17, a piston 172 is movably sleeved inside the tube 171, through slots are disposed on two sides of the piston 172 to ensure that the piston 172 is not affected by air pressure inside the tube 171 when moving up and down, a spring 173 is disposed between the top of the piston 172 and the end cap at the top of the tube 171, a pushing shaft 174 is fixedly connected to the bottom of the piston 172, the bottom of the pushing shaft 174 extends out of the bottom of the tube 171 and is fixedly connected with the top of the floating block 14, the floating block 14 always keeps a downward moving trend under the elastic force of the spring 173, and the bottom of the packing plate 13 is attached to the top of the supporting grid plate 9, so as to seal the notch 121.
The bottom fixed mounting of one of them body 171 top end cover has spacing axle 175, and spacing axle 175 is located the inboard of spring 173, the bottom of spacing axle 175 is equipped with two separation conductive terminal, and two conductive terminal electricity are connected with the wire respectively, and the wire extends the outside of shell 1 and is connected with warning light 27 (the built-in power is not drawn in the figure) electrically, the crust parcel of wire has high temperature resistant corrosion resistant's protective sheath, the top of piston 172 is equipped with conductive reed, two wires, after the piston 172 moves up to conductive reed and two conductive terminal contact, the warning light 27 in the corresponding packing layer is electrified to flash, remind the operating personnel in time to know the globular packing jam in this layer packing layer device, need change.
The partition plate 10 is provided with dense through holes 101, so that the through holes 101 are like a filter screen (in order to facilitate the cleaning of reference numerals, the through holes 101 are marked at the cut parts on two sides in the drawing, the through holes 101 are not shown on the conical surface of the partition plate 10), spherical fillers are separated to form independent filler cavities, the dense through holes 101 are started on the partition plate 10, waste gas and absorption liquid flow are not influenced, the filler cavities have good connectivity, ports of the through holes 101 are obliquely arranged from outside to inside, ascending air flow of the through holes 101 flows towards a standpipe 12 in the center of the filler cavities, after the spherical fillers are blocked, absorption liquid is gathered at the innermost filler cavities, along with the rising of the liquid level, a floating block 14 overcomes the elasticity of a spring 173, the ascending air flow is matched, the inner sides of limiting grid 11 are driven to move upwards, the notch 121 is opened, spherical fillers in the innermost filler cavities in the filler layer device slide down into the standpipe 12 through the notch 121, meanwhile, the air flow rising upwards and towards the inner sides 12 of the center of the filler cavities is not influenced, the spherical filler cavities automatically moves upwards, and the spherical filler cavities close to the inner sides of the standpipe 12 are restored by the elastic force of the adjacent filler cavities, and the elastic force of the spherical filler cavities is restored by the elastic force of the standpipe 173, and the elastic filler is restored.
The side of the shell 1 is communicated with the conveying pipes 18 with the same number as the packing layer devices, each conveying pipe 18 is respectively communicated with the outermost packing cavities in the corresponding packing layer devices, one end of each conveying pipe 18, which is far away from each packing cavity, is communicated with a conveying box 19, one side of each conveying box 19 is provided with a fan 20, spherical packing in each conveying box 19 can be conveyed to the outermost packing cavity in each packing layer device through air flow generated by the start of the fans 20, and under the blowing action of the conveying air flow, the spherical packing is uniformly distributed in the annular packing cavities.
Through the step design of the packing cavity from outside to inside, and the new spherical packing is added from the outermost packing cavity, after each spherical packing moves in the long-time treatment period, the circulation paths of waste gas and solution are changed, so that the spherical packing can be contacted with liquid and generate turbulence when moving, the mixing of gas and liquid is promoted, harmful gas in gas can be better dissolved into the liquid, the problem that the circulation paths of the waste gas and the solution are blocked in a single path to influence the subsequent waste gas treatment efficiency is avoided, and meanwhile, the contact position of the gas and the liquid is changed after the spherical packing moves, thereby fully utilizing the surface of the spherical packing.
With continued reference to fig. 1, a collecting cavity located inside the casing 1 is formed in the top of the base 2, a cover plate 21 is fixedly mounted on the top of the base 2, a limiting sleeve 22 is fixedly mounted on the top of the cover plate 21, the middle of the limiting sleeve 22 is fixedly sleeved with the bottom end of the vertical pipe 12, the vertical pipe 12 is fixed through the limiting sleeve 22, the inner cavity of the vertical pipe 12 is communicated with the collecting cavity, a semicircular sealing plug is arranged at the top end of the vertical pipe 12, a discharge groove 24 communicated with the collecting cavity is formed in one side of the base 2, an inclined filter screen 23 is arranged in the collecting cavity, the lowest part of the filter screen 23 is arranged at the discharge groove 24, a transparent cover for sealing the discharge groove 24 is arranged outside the base 2, and the bottom of the base 2 is communicated with the collecting pipe.
With continued reference to fig. 1 and 2, the inner part of the housing 1 is provided with spraying layer devices with the same number as that of the packing layer devices, each spraying layer device is correspondingly arranged right above each packing layer device, please participate in fig. 1, 2 and 4, each spraying layer device comprises a group of spraying pipes 5, a supporting grid plate 9 positioned above the highest packing layer device is fixedly arranged in the housing 1, the supporting grid plate 9 is used for fixing the uppermost group of spraying pipes 5, namely, one group of spraying pipes 5 in each spraying layer device are fixedly connected with the bottom of the supporting grid plate 9 above the spraying pipe 5 through a plurality of connecting pieces, and the number of the connecting pieces is not less than two.
The number of each group of spray pipes 5 is not less than two, each two spray pipes 5 are communicated through a positioning guide pipe 6, a plurality of spray heads 7 are arranged at the bottom of each spray pipe 5, the number of the spray heads 7 is not less than six, a plurality of spray heads 7 are circumferentially distributed at the bottom of each spray pipe 5, the side face of one spray pipe 5 is communicated with a liquid inlet pipe 8, the liquid inlet pipe 8 is used for leading the absorption liquid for purifying the waste gas into the spray pipes 5, and each spray head 7 sprays.
The connecting piece includes location even axle 25, the top of location even axle 25 and the bottom fixed connection of spacing grid net 11, and the top of location even axle 25 and the junction of spacing grid net 11 bottom be located through-hole 101 and support grid board 9 junction under for the waste gas flows through each filler chamber and receives the blocking degree less, the bottom fixedly connected with location arc piece 26 of location even axle 25, the bottom of location arc piece 26 and the top fixed connection of shower 5.
A treatment process of the polyamide resin production waste gas treatment equipment comprises the following steps:
s1, firstly introducing waste gas generated in the production of polyamide resin into the shell 1 through the air inlet pipe 3, then introducing absorption liquid for purifying harmful gases in the waste gas through the liquid inlet pipe 8, namely, when the treatment equipment is used for treating volatile organic compounds in the waste gas in the process flow stage, correspondingly selectively introducing absorption liquid for absorbing the volatile organic compounds, and treating the waste gas in the case of treating ammonia in the waste gas, and the like.
S2, the waste gas enters the packing cavity through the supporting grating plate 9, meanwhile, the waste gas absorption liquid enters the spray pipes 5 through the liquid inlet pipes 8, and finally, the waste gas absorption liquid is sprayed downwards through each spray nozzle 7, sprayed to the spherical packing surface in the packing cavity, flows downwards and fully contacts and reacts with the waste gas rising in the packing cavity, so that harmful gas in the waste gas is purified.
S3, with the continuous proceeding of waste gas purification, after the part contacted by the spherical filler gas-liquid is blocked, the sprayed absorption liquid is converged to the innermost filler cavity under the action of gravity until the buoyancy of the absorption liquid to the floating block 14 overcomes the elasticity of the spring 173, so that the floating block 14 moves upwards, after the floating block 14 contacts with the flange part at the top of the spacer bush 13, the spacer bush 13 and the inner ring part of the spacing grid 11 are driven to move upwards simultaneously, thus the notch 121 is opened, the spacing effect of the spacing grid 11 at the top of the partition board 10 disappears, under the actions of rising and airflow flowing through the through hole 101, the spherical filler at the outer layer is blown by the airflow and then moves towards the lower inner filler cavity, and meanwhile, the conductive reed on the piston 172 contacts with the conductive terminal below the spacing shaft 175, and the warning lamp 28 is electrified to flash.
S4, the spherical filler in the innermost filler cavity in the shell 1 falls into the vertical pipe 12 through the notch 121 and falls to the discharge groove 24 through the filter screen 23, so that an operator can observe the spherical filler falling at the discharge groove 24 through the transparent cover, and some absorption liquid falling into the vertical pipe 12 along with the spherical filler falls below the filter screen 23.
S5, according to the flickering of the warning lamp 27 and the spherical filler falling to the discharge groove 24, an operator starts the fan 20 to convey the new spherical filler in the material conveying box 19 into the outermost filler cavity in the corresponding filler layer device, and the new spherical filler is uniformly distributed in the filler cavity by utilizing the air flow blown by the fan 20, so that the operation is finished.
Claims (10)
1. The utility model provides a polyamide resin production exhaust-gas treatment equipment, includes shell (1), and the bottom switch-on of shell (1) side has intake pipe (3), and the middle part switch-on shell (1) top has blast pipe (4), and the inside of shell (1) is equipped with a plurality of layers packing layer device and sprays layer device, and every sprays layer device and set up respectively in the top of every packing layer device, a serial communication port, be equipped with a plurality of packing chambers in the packing layer device, and the packing chamber is the echelonment from outside to inside and distribute, be used for placing spherical packing in the packing chamber, the fixed cover in middle part of packing layer device has standpipe (12), offer notch (121) in the innermost packing chamber of intercommunication on standpipe (12), the side switch-on of shell (1) has conveying pipeline (18) in the outermost packing chamber of intercommunication, the outside movable sleeve of standpipe (12) is equipped with and is used for sealing up spacing grid (11) of notch (121), the outside fixedly connected with of sealing grid (13) is used for moving the spherical packing in the packing chamber and carries out spacing grid (11), sealing grid (13) are located spacing grid (14) on the outside fixed grid of sealing grid (13).
2. The equipment for treating waste gas generated in polyamide resin production according to claim 1, wherein the filler layer device comprises a supporting grating plate (9) fixedly installed inside the shell (1), the supporting grating plate (9) is in a shape of a reversed truncated cone, wall thickness values of all parts of the supporting grating plate (9) are the same, a plurality of partition plates (10) are fixedly installed at the top of the supporting grating plate (9), the number of the partition plates (10) is not less than two, the partition plates (10) are distributed at the top of the supporting grating plate (9) from outside to inside, the filler cavity is formed by the partition plates (10) and the supporting grating plate (9), and the vertical pipes (12) are fixedly sleeved with the supporting grating plate (9).
3. The equipment for treating waste gas generated in the production of polyamide resin according to claim 2, wherein a positioning ring plate (15) positioned above the partition plate (10) is fixedly sleeved in the shell (1), the distance between the bottom of the positioning ring plate (15) and the top of the supporting grating plate (9) is the same as the height of the partition plate (10), the limiting grating net (11) is arranged between the positioning ring plate (15) and the packing sleeve plate (13), and the limiting grating net (11) is made of soft materials with high temperature resistance and corrosion resistance.
4. The polyamide resin production waste gas treatment apparatus according to claim 1, wherein the partition plate (10) is provided with dense through holes (101), and ports of the through holes (101) are arranged obliquely from outside to inside.
5. The equipment for treating waste gas generated in polyamide resin production according to claim 1, wherein a limiting ring block (16) is fixedly sleeved on the outer side of the vertical pipe (12), two elastic devices (17) are arranged between the limiting ring block (16) and the floating block (14), the two elastic devices (17) are respectively arranged on two sides of the vertical pipe (12), each elastic device (17) comprises a pipe body (171), end covers are respectively arranged at two ends of each pipe body (171), the top of each pipe body (171) is fixedly connected with the bottom of each elastic device (17), a piston (172) is movably sleeved inside each pipe body (171), a spring (173) is arranged between the top of each piston (172) and the end cover at the top of each pipe body (171), a pushing shaft (174) is fixedly connected to the bottom of each piston (172), and the bottom of each pushing shaft (174) extends out of the bottom of each pipe body (171) and is fixedly connected with the top of each floating block (14).
6. The polyamide resin production waste gas treatment device according to claim 5, wherein through grooves are formed in two sides of the piston (172), a limiting shaft (175) is fixedly arranged at the bottom end of a top end cover of one pipe body (171), the limiting shaft (175) is located on the inner side of the spring (173), two separated conductive terminals are arranged at the bottom of the limiting shaft (175), the two conductive terminals are respectively and electrically connected with a wire, the wire extends out of the outer shell (1) and is electrically connected with a warning lamp (27), a protective sleeve with high temperature resistance and corrosion resistance is wrapped on the outer shell of the wire, and a conductive reed and two wires are arranged at the top end of the piston (172).
7. The equipment for treating waste gas generated in polyamide resin production according to claim 1, wherein the number of the conveying pipes (18) is the same as that of the packing layer devices, each conveying pipe (18) is respectively communicated with the outermost packing cavity in the corresponding packing layer device, one end of the conveying pipe (18) far away from the packing cavity is communicated with a conveying box (19), and one side of the conveying box (19) is provided with a fan (20).
8. The equipment for treating waste gas generated in the production of polyamide resin according to claim 1, wherein the spraying layer device comprises a group of spraying pipes (5), the number of the spraying pipes (5) in each group is not less than two, each two spraying pipes (5) are communicated through a positioning pipe (6), a plurality of spray heads (7) are arranged at the bottom of each spraying pipe (5), the number of the spray heads (7) is not less than six, and a plurality of spray heads (7) are circumferentially distributed at the bottom of the spraying pipe (5).
9. The polyamide resin production waste gas treatment equipment according to claim 1, wherein a collecting cavity positioned on the inner side of the shell (1) is formed in the top of the base (2), a cover plate (21) is fixedly arranged on the top of the base (2), a limiting sleeve (22) is fixedly arranged on the top of the cover plate (21), the middle part of the limiting sleeve (22) is sleeved with the bottom end of the vertical pipe (12) fixedly, the inner cavity of the vertical pipe (12) is communicated with the collecting cavity, a semicircular sealing plug is arranged at the top end of the vertical pipe (12), a discharging groove (24) communicated with the collecting cavity is formed in one side of the base (2), an inclined filter screen (23) is arranged in the collecting cavity, the lowest part of the filter screen (23) is arranged at the position of the discharging groove (24), a transparent cover for sealing the discharging groove (24) is arranged on the outer part of the base (2), and the bottom of the base (2) is communicated with the collecting pipe.
10. A treatment process of a polyamide resin production waste gas treatment apparatus, characterized in that the treatment process of the polyamide resin production waste gas treatment apparatus is as follows:
s1, firstly introducing waste gas generated in the production of polyamide resin into a shell (1) through an air inlet pipe (3), then introducing absorption liquid for purifying harmful gas in the waste gas through a liquid inlet pipe (8), namely, when the treatment equipment is used for treating volatile organic matters in the waste gas in the process flow stage, correspondingly selecting the absorption liquid for absorbing the volatile organic matters, and if ammonia in the waste gas is treated, treating the waste gas in the similar way;
s2, the waste gas enters a packing cavity through a supporting grating plate (9), and meanwhile, waste gas absorption liquid enters a spray pipe (5) through a liquid inlet pipe (8), and finally, the waste gas is sprayed downwards through each spray nozzle (7), and the absorption liquid sprays on the spherical packing surface in the packing cavity and flows downwards to fully contact and react with the waste gas rising in the packing cavity, so that harmful gas in the waste gas is purified;
s3, after the part contacted with the spherical filler gas-liquid is blocked along with the continuous exhaust gas purification, the sprayed absorption liquid is converged towards the innermost filler cavity under the action of gravity until the buoyancy of the absorption liquid to the floating block (14) overcomes the elasticity of the spring (173), so that the floating block (14) moves upwards, the floating block (14) is contacted with the flange part at the top of the sealing sleeve plate (13), the sealing sleeve plate (13) and the inner ring part of the limiting grid net (11) are driven to move upwards simultaneously, so that the notch (121) is opened, the limiting effect of the limiting grid net (11) at the top of the partition plate (10) disappears, under the actions of rising and airflow flowing through the through hole (101), the spherical filler close to the outer layer is blown by the airflow and then moves towards the lower inner filler cavity, and meanwhile, the conductive reed on the piston (172) is contacted with the conductive terminal below the limiting shaft (175), and the warning lamp (27) is electrified and blinks;
s4, spherical fillers in the innermost filler cavity in the shell (1) fall into the vertical pipe (12) through the notch (121) and fall to the discharge groove (24) through the filter screen (23), so that an operator can observe the spherical fillers falling at the discharge groove (24) through the transparent cover, and some absorption liquid falling into the vertical pipe (12) along with the spherical fillers falls below the filter screen (23);
s5, according to the flickering of the warning lamp (27) and the spherical filler falling to the discharge groove (24), an operator starts the fan (20) to convey the new spherical filler in the material conveying box (19) to the outermost filler cavity in the corresponding filler layer device, and the new spherical filler is uniformly distributed in the filler cavity by utilizing the air flow blown by the fan (20), so that the operation is finished.
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| CN202311259605.8A CN117101387B (en) | 2023-09-27 | 2023-09-27 | Polyamide resin production waste gas treatment equipment and treatment process |
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