CN217646102U - Tail gas recovery equipment for ethylene device - Google Patents
Tail gas recovery equipment for ethylene device Download PDFInfo
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- CN217646102U CN217646102U CN202220189770.5U CN202220189770U CN217646102U CN 217646102 U CN217646102 U CN 217646102U CN 202220189770 U CN202220189770 U CN 202220189770U CN 217646102 U CN217646102 U CN 217646102U
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- active carbon
- carbon filter
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Abstract
The utility model discloses a tail gas recovery device for an ethylene device, which relates to the technical field of tail gas recovery, and comprises a particle removal tank, a gas washing mechanism, a secondary filtering tank and a connecting pipe, wherein the gas washing mechanism comprises a gas washing tank, a sealing plate, a medicine placing box, a spray head, a baffle plate and a screen; the utility model discloses earlier intercept the impurity that enters into the great granule in the granule gets rid of jar interior tail gas through first active carbon filter, prevent simultaneously that the particulate matter from depending on the adsorption effect of the first active carbon filter of surface influence of first active carbon filter, the motor rotates and drives the brush rotation, wash first active carbon filter bottom surface, improve the live time and the result of use of first active carbon filter, the preliminary purification of granule getting rid of jar interior tail gas is rotated with higher speed to the first fan of first pivot tip simultaneously, the tail gas recovery efficiency of ethylene device has been improved.
Description
Technical Field
The utility model relates to a tail gas recovery technical field specifically is a tail gas recovery plant for ethylene device.
Background
The ethylene device is a petrochemical device which takes petroleum or natural gas as raw materials, mainly produces high-purity ethylene and propylene and produces a plurality of petrochemical raw materials as byproducts, and the cracked raw materials are cracked at high temperature, compressed and separated in the ethylene device to obtain ethylene and obtain important byproducts such as propylene, butadiene, benzene, toluene, xylene and the like.
Ethylene device is when the operation, can produce a large amount of tail gases, these tail gases contain certain toxicity, if not handle direct emission, will be in serious threat operator's healthy and polluted atmosphere, mention in the utility model patent of application No. 201920795777X, utilize first baffle, second baffle and third baffle change the flow direction of tail gas air current, utilize the effect of inertia force, make the granule impurity in the tail gas sink in the hopper down, simultaneously, the impurity of being soluble in water will take place to dissolve in the tail gas, and sink in the second grade sinks indoorly, utilize the impeller to blow off the air current at last, make tail gas pass through active carbon filter screen and HEPA high efficiency filter screen in proper order and filter, the bacterium in the tail gas has been intercepted, make tail gas obtain thorough purification.
But the tail gas that the ethylene device produced when the operation lets in each clean room, and gaseous circulation rate is lower in the clean room, has prolonged the recovery time of whole device to tail gas, has reduced the overall efficiency that tail gas was retrieved, and tail gas is after the absorption of reaction medicament is washd, reentries into high-efficient filter chamber simultaneously, and the steam that mix with in the gas can influence the adsorption effect of whole active carbon plate.
To this end, we propose a tail gas recovery plant for an ethylene plant.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tail gas recovery equipment for ethylene device, through the abundant harmful substance and the bad smell interception in the tail gas of first active carbon filter, second active carbon filter and HEPA filtration membrane in the jar, solved among the traditional device tail gas recovery incomprehensive problem, the first fan of rethread and second fan rotate, have accelerateed the circulation speed of tail gas in the device, solve tail gas and handle slower problem in recovery unit.
In order to achieve the above object, the utility model provides a following technical scheme:
a tail gas recovery device for an ethylene device comprises a particle removal tank, a gas washing mechanism, a secondary filter tank and a connecting pipe, wherein the gas washing mechanism comprises a gas washing tank, a sealing plate, a pesticide discharge box, a spray nozzle, a baffle and a screen, the sealing plate is fixed on the inner wall of the gas washing tank through spot welding, the pesticide discharge box is fixed on the top of the sealing plate through a bolt, the spray nozzle is installed at the bottom of the sealing plate, and one end of the spray nozzle penetrates through the bottom of the sealing plate and is communicated with the pesticide discharge box;
baffles are symmetrically fixed on the inner walls of the two sides of the gas washing tank and positioned at the bottom of the sealing plate through spot welding, and screens are fixed on the inner walls of the gas washing tank and positioned on the opposite surfaces of the two baffles through bolts;
the outer walls of the two sides of the washing gas tank are symmetrically communicated with connecting pipes, and one end of each connecting pipe corresponds to the baffle in the washing gas tank.
Further, the one end intercommunication of gas washing jar one side connecting pipe has the granule to get rid of the jar, and is located one side intercommunication that the jar was got rid of to the granule has the intake pipe, the bottom that the jar was got rid of to the granule has seted up the slag notch.
Further, the inner wall that the jar was got rid of to the granule has first active carbon filter through the bolt fastening, the top that the jar was got rid of to the granule has the motor through the bolt fastening, and is located the output of motor and is fixed with first pivot through spot welding, the one end of first pivot runs through the top that the jar was got rid of to the granule respectively and first active carbon filter and is fixed with first fan through spot welding, the outer wall of first pivot and the bottom that is located first active carbon filter are fixed with the brush, the outer wall of first pivot and the top that is located first active carbon filter are fixed with first gear through spot welding.
Further, there is the second pivot through bearing swing joint in the connecting tube, and the one end that is located the second pivot is fixed with the second gear through spot welding, first gear is connected with the meshing of second gear, the cover is equipped with the second fan in the connecting tube and on being located the second pivot, the other end of second pivot runs through one side of two baffles and two screen clothes respectively and extends to in the connecting tube of gas washing jar opposite side, the one end intercommunication of gas washing jar one side connecting pipe has the secondary filter jar, just the one end that is located the second pivot in the connecting tube of secondary filter jar one side intercommunication is fixed with the second fan through spot welding.
Further, the inner wall of secondary filter jar and the top that is located the connecting pipe have the second active carbon filter through the bolt fastening, the inner wall of secondary filter jar and the top that is located the second active carbon filter install the heating fluorescent tube, HEPA filtration membrane is installed at the inner wall of secondary filter jar and the top that is located the heating fluorescent tube, one side top intercommunication of secondary filter jar has the outlet duct.
Compared with the prior art, the beneficial effects of the utility model are that:
1. in the utility model, the impurities with larger particles in the tail gas entering the particle removal tank are intercepted through the first active carbon filter plate, meanwhile, the surface of the particles attached to the first active carbon filter plate is prevented from influencing the adsorption effect of the first active carbon filter plate, the motor rotates to drive the brush to rotate, the surface of the bottom of the first active carbon filter plate is cleaned, the service time and the service effect of the first active carbon filter plate are improved, meanwhile, the primary purification of the tail gas in the particle removal tank is accelerated by the rotation of the first fan at the end part of the first rotating shaft, and the tail gas recovery efficiency of the ethylene device is improved;
2. in the utility model, the rotation of the second rotating shaft drives the stirring blade in the gas washing tank to rotate, so that the liquid medicine sprayed out from the spray head is fully contacted with the tail gas of the ethylene device under the beating action of the stirring blade, the soluble gas in the tail gas can be fully recovered to the pollutant storage tank by the liquid medicine, meanwhile, the rotation of the second rotating shaft also drives the second fan in the connecting pipe to rotate, the circulation speed of the tail gas in the whole device is accelerated through the rotation of the second fan, and the tail gas purification efficiency is improved;
3. the utility model discloses in, through second active carbon filter and HEPA filtration membrane in the secondary filter jar, improved the interception effect of whole device to harmful substance in the tail gas, the heat that the concurrent heating fluorescent tube produced does benefit to scattering and disappearing of moisture on the second active carbon filter for the adsorption effect of second active carbon filter is better.
Drawings
Fig. 1 is a schematic structural view of a tail gas recovery apparatus for an ethylene plant according to the present invention;
FIG. 2 is a schematic view of a cross-sectional structure of a tail gas recycling apparatus for an ethylene plant according to the present invention;
FIG. 3 is an enlarged schematic view of the structure at the position A of the present invention;
FIG. 4 is a schematic sectional view of the air washing mechanism of the present invention;
fig. 5 is a schematic view of the structure of the stirring blade of the present invention.
In the figure: 1. a particle removal tank; 2. a gas washing mechanism; 201. a scrubber tank; 202. a sealing plate; 203. a medicine placing box; 204. a spray head; 205. a baffle plate; 206. screening a screen; 3. a secondary filtration tank; 4. a connecting pipe; 5. an air inlet pipe; 6. a motor; 7. a first rotating shaft; 8. a first gear; 9. a first activated carbon filter plate; 10. a brush; 11. a first fan; 12. a slag outlet; 13. a second rotating shaft; 14. a second gear; 15. a second fan; 16. a sewage storage box; 17. a second activated carbon filter plate; 18. heating the lamp tube; 19. a HEPA filter membrane; 20. an air outlet pipe; 21. stirring the leaves.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution:
example 1:
the ethylene device is a petrochemical device which takes petroleum or natural gas as a raw material, mainly produces high-purity ethylene and propylene, and meanwhile produces a plurality of petrochemical raw materials as byproducts, ethylene is obtained by cracking, compressing and separating the cracked raw material at high temperature in the ethylene device, and important byproducts such as propylene, butadiene, benzene, toluene, xylene and the like are obtained at the same time, when the ethylene device is operated, a large amount of tail gas can be produced, the tail gas has certain toxicity, and the health of operators can be seriously threatened if the tail gas is not treated, as shown in a figure 1-2, the tail gas recovery equipment of the whole ethylene device adopts three processes for treatment, interception of large-particle impurities in the tail gas, cleaning of the tail gas and secondary filtration of the tail gas;
during specific operation, a pipeline for introducing tail gas is connected with an air inlet pipe 5, at the moment, the tail gas enters a particle removal tank 1 along the air inlet pipe 5, a motor 6 positioned at the top of the particle removal tank 1 starts to work, the motor 6 drives a first rotating shaft 7 to rotate, the first rotating shaft 7 is respectively provided with a brush 10 and a first fan 11, in order to prevent a large amount of particles from attaching to a first active carbon filter plate 9, the brush 10 is arranged to clean the bottom surface of the first active carbon filter plate 9, the service time and the service effect of the first active carbon filter plate 9 are improved, meanwhile, the first rotating shaft 7 rotates to drive the first fan 11 to rotate, the first fan 11 rotates to blow the tail gas positioned at the bottom of the particle removal tank 1 to the surface of the first active carbon filter plate 9, the filtering of the tail gas on the first active carbon filter plate 9 is accelerated, and the tail gas recovery efficiency of the whole ethylene device is improved;
when partial tail gas comes to the upper position of the particle removal tank 1 after being preliminarily filtered by the first activated carbon filter plate 9, because the first gear 8 is further installed on the first rotating shaft 7, the second rotating shaft 13 is installed in the connecting pipe 4 between the tank body and the tank body, the second gear 14 is installed at one end of the second rotating shaft 13, the first gear 8 is meshed with the second gear 14, meanwhile, the rotating speed ratio of the first gear 8 to the second gear 14 is 1.
Example 2:
when the primarily treated tail gas enters the gas washing mechanism 2 along the connecting pipe 4 as shown in fig. 4, the tail gas firstly contacts the baffle 205 in the gas washing tank 201, the baffle 205 is arranged to prevent the liquid medicine sprayed out of the spray nozzle 204 from entering the connecting pipe 4, the liquid medicine enters the first active carbon filter plate 9 along the connecting pipe 4 to affect the adsorption effect of the first active carbon filter plate 9, the tail gas of the ethylene device can be stored in the medicine discharge box 203 arranged on the sealing plate 202 at the top of the gas washing tank 201 in advance through the water pump, and when the tail gas enters the gas washing tank 201, the spray nozzle 204 at the bottom of the sealing plate 202 starts to work to spray the medicine in the medicine discharge box 203;
when the medicament contacts the rotating stirring blade 21 on the second rotating shaft 13, the soluble gas entering the periphery of the stirring blade 21 through the screen 206 can be fully fused with the medicament through the rotation and the beating of the stirring blade 21, and meanwhile, the medicament which is beaten away by the stirring blade 21 is filmed on the screen 206 at two sides, which also has the filtering effect;
the medicament absorbed with gas enters the sewage storage box 16 along the pipeline of the gas washing tank 201 for storage, so that the later-stage workers can purify and recycle the substances in the medicament conveniently, and the tail gas enters the secondary filtering tank 3 for final impurity removal and filtration through the flaring of the second fan 15 after being cleaned.
Example 3:
the second active carbon filter plate 17 and the HEPA filter membrane 19 are arranged in the whole secondary filter tank 3, moisture is attached to the surface of the gas in the tail gas after the tail gas with moisture passes through the second active carbon filter plate 17, the moisture can influence the adsorption effect of the second active carbon filter plate 17, at the moment, the heating lamp tube 18 between the tail gas with moisture and the second active carbon filter plate 17 starts to work to dry the second active carbon filter plate 17 and heat the gas in the whole secondary filter tank 3 at the same time, so that the flow rate of the heated air in the secondary filter tank 3 is higher;
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a tail gas recovery plant for ethylene device, includes that the granule gets rid of jar (1), scrubbing mechanism (2), secondary filter jar (3) and connecting pipe (4), its characterized in that: the washing mechanism (2) comprises a washing tank (201), a sealing plate (202), a medicine discharging box (203), a spray head (204), a baffle plate (205) and a screen (206), the sealing plate (202) is fixed on the inner wall of the washing tank (201) through spot welding, the medicine discharging box (203) is fixed on the top of the sealing plate (202) through bolts, the spray head (204) is installed at the bottom of the sealing plate (202), and one end of the spray head (204) penetrates through the bottom of the sealing plate (202) and is communicated with the medicine discharging box (203);
baffles (205) are symmetrically fixed on the inner walls of the two sides of the scrubbing tank (201) and at the bottom of the sealing plate (202) through spot welding, and screens (206) are fixed on the inner walls of the scrubbing tank (201) and on the opposite surfaces of the two baffles (205) through bolts;
the outer walls of the two sides of the washing gas tank (201) are symmetrically communicated with connecting pipes (4), and one end of each connecting pipe (4) corresponds to the baffle (205) in the washing gas tank (201).
2. The tail gas recovery plant for an ethylene plant of claim 1, characterized in that: one end intercommunication of washing gas jar (201) one side connecting pipe (4) has the granule to get rid of jar (1), and is located one side intercommunication that the granule got rid of jar (1) has intake pipe (5), slag notch (12) have been seted up to the bottom that the jar (1) was got rid of to the granule.
3. The tail gas recovery plant for an ethylene plant of claim 2, characterized in that: the inner wall that jar (1) was got rid of to the granule has first active carbon filter (9) through the bolt fastening, the top that jar (1) was got rid of to the granule has motor (6) through the bolt fastening, and the output that is located motor (6) is fixed with first pivot (7) through spot welding, the one end of first pivot (7) runs through the top that the granule got rid of jar (1) and first active carbon filter (9) respectively and is fixed with first fan (11) through spot welding, the outer wall of first pivot (7) and the bottom that is located first active carbon filter (9) are fixed with brush (10), the outer wall of first pivot (7) and the top that is located first active carbon filter (9) are fixed with first gear (8) through spot welding.
4. The tail gas recovery plant for an ethylene plant of claim 3, characterized in that: there is second pivot (13) through bearing swing joint in connecting pipe (4), and the one end that is located second pivot (13) is fixed with second gear (14) through spot welding, first gear (8) are connected with second gear (14) meshing, the cover is equipped with second fan (15) in connecting pipe (4) and on being located second pivot (13), the other end of second pivot (13) runs through one side of two baffles (205) and two screen cloth (206) respectively and extends to in connecting pipe (4) of washing gas jar (201) opposite side, the one end intercommunication of washing gas jar (201) one side connecting pipe (4) has secondary filter jar (3), the one end that just is located second pivot (13) in connecting pipe (4) of secondary filter jar (3) one side intercommunication is fixed with second fan (15) through spot welding.
5. The tail gas recovery plant for ethylene plants according to claim 4, characterized in that: the inner wall of secondary filter jar (3) and the top that is located connecting pipe (4) have second active carbon filter (17) through the bolt fastening, the inner wall of secondary filter jar (3) and the top that is located second active carbon filter (17) install heating fluorescent tube (18), HEPA filtration membrane (19) is installed at the inner wall of secondary filter jar (3) and the top that is located heating fluorescent tube (18), one side top intercommunication of secondary filter jar (3) has outlet duct (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220189770.5U CN217646102U (en) | 2022-01-24 | 2022-01-24 | Tail gas recovery equipment for ethylene device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220189770.5U CN217646102U (en) | 2022-01-24 | 2022-01-24 | Tail gas recovery equipment for ethylene device |
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| Publication Number | Publication Date |
|---|---|
| CN217646102U true CN217646102U (en) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220189770.5U Active CN217646102U (en) | 2022-01-24 | 2022-01-24 | Tail gas recovery equipment for ethylene device |
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| CN (1) | CN217646102U (en) |
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- 2022-01-24 CN CN202220189770.5U patent/CN217646102U/en active Active
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