CN211536601U - Tail gas recovery system - Google Patents
Tail gas recovery system Download PDFInfo
- Publication number
- CN211536601U CN211536601U CN201922471447.8U CN201922471447U CN211536601U CN 211536601 U CN211536601 U CN 211536601U CN 201922471447 U CN201922471447 U CN 201922471447U CN 211536601 U CN211536601 U CN 211536601U
- Authority
- CN
- China
- Prior art keywords
- tail gas
- exhaust
- condensation
- exhaust branch
- branch pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a tail gas recovery system, include: the inlet of the fan is connected with the tail gas exhaust pipeline; the condensation main machine comprises a regenerative heat exchanger, a preheater and a condensation box which are sequentially connected through pipelines, the air inlet is arranged on the regenerative heat exchanger, and tail gas entering the condensation main machine is gradually cooled through the regenerative heat exchanger, the preheater and the condensation box; and the recovery device is connected with the first outlet of the condensation tank and is used for recovering a product condensed by the condensation main machine. The utility model discloses a condensation host computer makes tail gas cooling condensation step by step, and benzene class that can effectual recovery loading in-process tank car volatilizees is gaseous, improves site environment, reduces the material leakage by a wide margin to produce certain economic benefits. Meanwhile, the uncondensed residual tail gas flows back to the regenerative heat exchanger, is subjected to heat exchange and temperature rise and then is conveyed to a torch device for combustion treatment, and pollution can be further reduced.
Description
Technical Field
The utility model relates to an environmental protection technology field, in particular to tail gas recovery system.
Background
Benzene hydrogenation products (benzene, toluene, xylene, non-aromatic hydrocarbons, C8, C9+, heavy benzene and the like) can volatilize a large amount of benzene gas in the loading process, particularly in summer, the volatilization amount of heavy benzene and heavy hydrocarbon is large, the influence on the environment is large, and the health of field workers is damaged.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that prior art exists, the embodiment of the utility model provides a tail gas recovery system can retrieve benzene hydrogenation product loading tail gas, effectively reduces pollutant concentration, environmental protection, and the guarantee personnel are healthy.
The utility model provides a tail gas recovery system, include:
the inlet of the fan is connected with the tail gas exhaust pipeline;
the condensation main machine comprises a regenerative heat exchanger, a preheater and a condensation box which are sequentially connected through pipelines, the air inlet is arranged on the regenerative heat exchanger, and tail gas entering the condensation main machine is gradually cooled through the regenerative heat exchanger, the preheater and the condensation box;
and the recovery device is connected with the first outlet of the condensation tank and is used for recovering a product condensed by the condensation main machine.
In some embodiments, the exhaust gas exhaust pipeline includes an exhaust main pipe and a plurality of exhaust branch pipes respectively connected to the exhaust main pipe, and the plurality of exhaust branch pipes are respectively connected to the plurality of exhaust gas tanks.
In some embodiments, a trapezoidal sealing cap is arranged at the tank opening of the tail gas tank, the exhaust branch pipe penetrates through the trapezoidal sealing cap to be connected with the tank opening, a stop valve is arranged at a position, close to the tank opening, of the exhaust branch pipe, and the tank opening is further connected with a feeding pipe to feed the tail gas tank.
In some embodiments, a pressure sensor is disposed on the main exhaust pipe at a position close to the main condensation unit, and the pressure sensor is connected to the fan.
In some embodiments, the tail gas recovery system further comprises a crude benzene storage tank connected to the outlet of the recovery device, and an oil pump is arranged on a connection pipeline between the crude benzene storage tank and the recovery device.
In some embodiments, the main condensing unit further includes a heat return pipeline, the second outlet of the condensing tank is connected to the recuperator through the heat return pipeline, after the multi-stage cooling of the main condensing unit, the uncondensed tail gas flows back to the recuperator through the heat return pipeline, and after the heat exchange and temperature rise in the recuperator, the uncondensed tail gas is conveyed to a flare device through a gas pipeline for combustion processing.
In some embodiments, the exhaust branch pipes include at least two of a toluene exhaust branch pipe, a non-aromatic hydrocarbon exhaust branch pipe, a residue exhaust branch pipe, a C9 exhaust branch pipe, a C8 exhaust branch pipe, a xylene exhaust branch pipe, a pure benzene exhaust branch pipe, and each exhaust branch pipe is connected to the corresponding tail gas tank.
In some embodiments, the exhaust manifold is a wire hose.
The embodiment of the utility model provides a tail gas recovery system sends into the condensation host computer through following tail gas exhaust pipe route fan with normal atmospheric temperature tail gas, and the condensation of cooling down step by step in the condensation host computer discharges the produced benzene class material of condensation to recovery unit recycle, and benzene class gas that can effectual recovery loading in-process tank car volatilizees, improves site environment, reduces the material leakage by a wide margin to produce certain economic benefits. Meanwhile, the uncondensed residual tail gas flows back to the regenerative heat exchanger, is subjected to heat exchange and temperature rise and then is conveyed to a torch device for combustion treatment, and pollution can be further reduced.
Drawings
Fig. 1 is a schematic structural diagram of an exhaust gas recovery system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an exhaust tank opening according to an embodiment of the present invention.
The reference numbers in the figures are as follows:
10-main exhaust pipe, 20-branch exhaust pipe, 301-trapezoidal sealing cap, 302-stop valve, 303-feed pipe and 40-gas pipeline;
1-fan, 2-condensation host, 201-air inlet, 21-regenerative heat exchanger, 22-preheater, 23-condensation box, 231-first outlet, 232-second outlet, 24-heat return circuit, 3-recovery device, 4-crude benzene storage tank, 5-oil pump and 6-torch device.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.
Fig. 1 shows a schematic structural diagram of an exhaust gas recovery system according to an embodiment of the present invention. As shown in fig. 1, the embodiment of the utility model provides a tail gas recovery system for retrieve the benzene class gas that the loading in-process tank car volatilizees, this tail gas recovery system includes:
the inlet of the fan 1 is connected with the tail gas exhaust pipeline;
the condensation main machine 2 is provided with an air inlet 201 connected with an outlet of the fan 1, the condensation main machine 2 comprises a regenerative heat exchanger 21, a preheater 22 and a condensation box 23 which are sequentially connected through a pipeline, the air inlet 201 is arranged on the regenerative heat exchanger 21, and tail gas entering the condensation main machine 2 from the air inlet 201 is gradually cooled through the regenerative heat exchanger 21, the preheater 22 and the condensation box 23;
and the recovery device 3 is connected with the first outlet 231 of the condensation box 23 and is used for recovering products condensed by the condensation main machine 2.
The embodiment of the utility model provides a tail gas recovery system sends into condensation host computer 2 with normal atmospheric temperature tail gas along tail gas exhaust pipe route fan 1, and the condensation of cooling down step by step in condensation host computer 2 discharges the produced benzene class material of condensation to recovery unit recycle, and benzene class gas that can effectual recovery loading in-process tank car volatilizees improves site environment, reduces the material leakage by a wide margin to produce certain economic benefits.
The tail gas is cooled in the condensing main machine 2 in a multi-stage gradient manner, is primarily cooled by the regenerative heat exchanger 21, is cooled to about 4 ℃ by the precooler 22, condenses out partial benzene substances and water, then enters the condensing box 23 to be cooled to-25 ℃, so that most of benzene components are separated, and the benzene substances separated by condensation enter the recovery device 3 for recycling.
In some embodiments, the exhaust gas exhaust pipeline includes an exhaust main pipe 10 and a plurality of exhaust branch pipes 20 respectively connected to the exhaust main pipe 10, and the plurality of exhaust branch pipes 20 are respectively connected to the plurality of exhaust gas tanks. Benzene gas volatilized from different tail gas tanks of different tank trucks can be treated in a centralized manner, and the tail gas recovery efficiency is improved.
The exhaust branch pipes 20 comprise at least two of a toluene exhaust branch pipe, a non-aromatic hydrocarbon exhaust branch pipe, a residue exhaust branch pipe, a C9 exhaust branch pipe, a C8 exhaust branch pipe, a xylene exhaust branch pipe, a pure benzene exhaust branch pipe and a pure benzene exhaust branch pipe, and each exhaust branch pipe 20 is connected with a corresponding tail gas tank.
As shown in fig. 2, a trapezoidal sealing cap 301 is arranged at the tank opening of the tail gas tank, the exhaust branch pipe 20 passes through the trapezoidal sealing cap 301 to be connected with the tank opening of the tail gas tank, and a stop valve 302 is arranged at a position of the exhaust branch pipe 20 close to the tank opening to regulate the flow of the tail gas. The trapezoidal sealing cap 301 can effectively prevent the tail gas from overflowing by matching with a tank opening of a tank tail gas tank.
Jar mouth still is connected with filling tube 303 in order to reinforced in the tail gas jar, and the feeder is connected to filling tube 303, and the feeder is opened or is closed simultaneously with the stop valve 302 that corresponds, when realizing reinforced, the tail gas treatment is carried out in the ejection of compact.
Preferably, exhaust branch 20 is the steel wire hose, improves exhaust branch 20's intensity and toughness greatly for the body is difficult to ageing fracture, and resistant negative pressure prevents effectively that gas from leaking.
In some embodiments, a pressure sensor is disposed on the main exhaust pipe 10 near the main condensing unit 2, so that the pressure of the exhaust gas entering the main condensing unit 2 can be monitored in real time, and the exhaust gas content can be detected. In addition, pressure sensor links to each other with fan 1, can be according to tail gas content automatically regulated fan frequency for fan frequency and condensation pressure phase-match of condensation host computer 2 guarantee the condensation effect.
In some embodiments, the tail gas recovery system further comprises a crude benzene storage tank 4 connected to the outlet of the recovery device 3, and an oil pump 5 is disposed on a connection pipeline between the crude benzene storage tank 4 and the recovery device 3. The tail gas is condensed to a certain temperature in the condensation main machine 2, most benzene steam is liquefied, and benzene substances generated by condensation are discharged to the recovery device 3 for recovery. When the capacity of the benzene substances in the recovery device 3 reaches a certain degree, the benzene substances are pumped to a crude benzene storage tank 4 through an oil pump 5 for storage.
In some embodiments, the main condensing unit 2 further includes a heat return pipeline 24, the second outlet 232 of the condensing tank 23 is connected to the recuperator 21 through the heat return pipeline 24, the remaining of the tail gas after the benzene substances are separated by multi-stage cooling in the main condensing unit 2 is low-temperature benzene-lean steam (uncondensed tail gas), the low-temperature benzene-lean steam flows back to the recuperator 21 through the heat return pipeline 24, and is transported to the flare apparatus 6 for combustion processing through the gas transport pipeline 40 after being subjected to heat exchange and temperature rise in the recuperator 21. Specifically, after passing through the regenerative heat exchanger 21, the preheater 22 and the condensing tank 23 in sequence, the uncondensed residual tail gas flows back to the regenerative heat exchanger 21 for regenerative heat exchange, and after being subjected to heat exchange by the regenerative heat exchanger 21 and heated to a certain temperature (for example, 25 ℃), the residual tail gas is conveyed to the torch device 6 through the gas pipeline 40, and water and carbon dioxide are generated by combustion and heat production, so that pollution can be effectively reduced. The utility model provides a tail gas recovery system not only can retrieve the condensate benzene, can also carry out effective processing with remaining tail gas, improves site environment, guarantees that personnel are healthy.
In the working process of the whole tail gas recovery system, all cold energy is completely used for overcoming the latent heat of vaporization of benzene substances, and the benzene substances are changed into condensed benzene for recycling, so that the effects of energy conservation and environmental protection are achieved, and considerable economic benefits are obtained. After the tail gas recovery system is adopted, abnormal smell generated by benzene volatilization in the loading process is obviously reduced, the concentration of combustible gas in the modified loading area is obviously reduced, the danger of fire and explosion is reduced, the danger of acute poisoning of personnel is avoided, the field environment is effectively improved, the operation environment safety is ensured, and the clean production and safe production level is improved.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A tail gas recovery system, comprising:
the inlet of the fan is connected with the tail gas exhaust pipeline;
the condensation main machine comprises a regenerative heat exchanger, a preheater and a condensation box which are sequentially connected through pipelines, the air inlet is arranged on the regenerative heat exchanger, and tail gas entering the condensation main machine is gradually cooled through the regenerative heat exchanger, the preheater and the condensation box;
and the recovery device is connected with the first outlet of the condensation tank and is used for recovering a product condensed by the condensation main machine.
2. The exhaust gas recovery system according to claim 1, wherein the exhaust gas discharge line includes a main exhaust pipe and a plurality of exhaust branch pipes connected to the main exhaust pipe, respectively, and the plurality of exhaust branch pipes are connected to the plurality of exhaust gas tanks, respectively.
3. The tail gas recovery system of claim 2, wherein a trapezoidal sealing cap is arranged at the tank opening of the tail gas tank, the exhaust branch pipe penetrates through the trapezoidal sealing cap to be connected with the tank opening, a stop valve is arranged at a position of the exhaust branch pipe close to the tank opening, and a feed pipe is further connected to the tank opening to feed the tail gas tank.
4. The tail gas recovery system of claim 2, wherein a pressure sensor is disposed on the main exhaust pipe at a position close to the main condensing unit, and the pressure sensor is connected to the fan.
5. The tail gas recovery system of claim 1, further comprising a crude benzene storage tank connected to an outlet of the recovery device, wherein an oil pump is disposed on a connection pipeline between the crude benzene storage tank and the recovery device.
6. The tail gas recovery system of claim 1, wherein the condensing main unit further comprises a heat return pipeline, the second outlet of the condensing tank is connected to the recuperator through the heat return pipeline, the uncondensed tail gas after being cooled by the condensing main unit in multiple stages flows back to the recuperator through the heat return pipeline, and the uncondensed tail gas is heated by heat exchange in the recuperator and then is delivered to a flare device through a gas delivery pipeline for combustion treatment.
7. The exhaust gas recovery system according to claim 2, wherein the exhaust branch pipes include at least two of a toluene exhaust branch pipe, a non-aromatic hydrocarbon exhaust branch pipe, a residue exhaust branch pipe, a C9 exhaust branch pipe, a C8 exhaust branch pipe, a xylene exhaust branch pipe, a pure benzene exhaust branch pipe, and each exhaust branch pipe is connected to the corresponding exhaust tank.
8. The exhaust gas recovery system according to claim 2, wherein the exhaust branch pipe is a wire hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922471447.8U CN211536601U (en) | 2019-12-31 | 2019-12-31 | Tail gas recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922471447.8U CN211536601U (en) | 2019-12-31 | 2019-12-31 | Tail gas recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211536601U true CN211536601U (en) | 2020-09-22 |
Family
ID=72512508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922471447.8U Active CN211536601U (en) | 2019-12-31 | 2019-12-31 | Tail gas recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211536601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116444122A (en) * | 2023-05-13 | 2023-07-18 | 中城院(北京)环境科技股份有限公司 | Intelligent control system and control method for efficient low-energy-consumption operation of sludge thin-layer drying |
-
2019
- 2019-12-31 CN CN201922471447.8U patent/CN211536601U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116444122A (en) * | 2023-05-13 | 2023-07-18 | 中城院(北京)环境科技股份有限公司 | Intelligent control system and control method for efficient low-energy-consumption operation of sludge thin-layer drying |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211536601U (en) | Tail gas recovery system | |
| CN104403704A (en) | Negative-pressure crude benzene distillation process and equipment heating washing oil by steam | |
| CN102233195A (en) | Non-pressure condensing recovery and purification technology and equipment for gas discharged from reclaimed rubber devulcanizer | |
| CN103438428A (en) | Closed steam condensate water high-temperature recovery system | |
| CN207279602U (en) | A kind of closed type condensate water recovery device | |
| CN209155563U (en) | A kind of residual neat recovering system of solid water glass dissolution | |
| CN110143378B (en) | Zero-emission method for safely collecting VOCs (volatile organic compounds) in storage tank | |
| CN203893154U (en) | Recycling system for low-grade steam heat energy of deaerator | |
| CN219199509U (en) | Comprehensive treatment system for exhaust gas of heating furnace in oil field | |
| CN110143376A (en) | Storage tank VOCs safe collection Zero emission device | |
| CN210171124U (en) | Oil gas recovery heat exchange defrosting device | |
| CN109847518A (en) | A kind of plastic granulating flue gas processing method and processing equipment | |
| CN108043062B (en) | Storage tank breathes processing system who discharges volatile gas | |
| CN213853156U (en) | NMP solvent regeneration recovery system | |
| CN201703786U (en) | Gas phase recovering device of propylene oxide tank car | |
| CN102698458A (en) | Method for reducing emission and recycling atmospheric pollutants in emptying and cleaning process of chemical plant installations | |
| CN206215024U (en) | A kind of processing unit of the organic exhaust gas containing sour gas | |
| CN211420090U (en) | Energy-saving hydrocarbon water dew point control device | |
| CN211158674U (en) | Traditional chinese medicine draws jar waste heat recovery and utilizes equipment | |
| CN205042330U (en) | Novel efficient organic solvent recovery system | |
| NO124578B (en) | ||
| CN205360967U (en) | Rewarming blowback system of low temperature vapor recovery system system | |
| CN208634789U (en) | A kind of gas recovery system for oil | |
| CN115593811A (en) | Tribenzene storage tank tail gas circulation zero-emission method | |
| CN212901584U (en) | Mixed hydrocarbon gas auxiliary combustion system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Tail gas recovery system Effective date of registration: 20230829 Granted publication date: 20200922 Pledgee: TANGSHAN BANK Co.,Ltd. Pledgor: TANGSHAN XUYANG CHEMICAL CO.,LTD. Registration number: Y2023980054484 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |