CN202860371U - Combined-type benzene series recycling system - Google Patents
Combined-type benzene series recycling system Download PDFInfo
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- CN202860371U CN202860371U CN 201220546295 CN201220546295U CN202860371U CN 202860371 U CN202860371 U CN 202860371U CN 201220546295 CN201220546295 CN 201220546295 CN 201220546295 U CN201220546295 U CN 201220546295U CN 202860371 U CN202860371 U CN 202860371U
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Abstract
The utility model discloses a combined-type benzenes series recycling system. The combined-type benzenes series recycling system comprises a compressor, a gas-liquid direct contact heat exchanger, a dehydration adsorption tank, a membrane separator, a condenser and a condensate pump, wherein the an inlet pipeline is connected with the membrane separator by virtue of the compressor, the gas-liquid direct contact heat exchanger and the dehydration adsorption tank sequentially, a permeate gas outlet of the membrane separator is connected with the inlet of the condenser by virtue of a pipeline, the outlet at the top of the condenser is connected with the inlet of the compressor by virtue of a pipeline, the bottom of the condenser are provided with three outlets, one outlet is connected with a discharger by virtue of a pipeline, one outlet is connected with a condensate inlet at the upper part of the condenser by virtue of a pipeline, and the third outlet is connected with the condensate inlet of the gas-liquid direct contact heat exchanger by virtue of a pipeline. According to the combined-type benzenes series recycling system disclosed by the utility model, a compression, condensation and membrane separation combined process is adopted for recycling benzenes series, and recycling rate of the benzenes series is increased. The combined-type benzenes series recycling system disclosed by the utility model has the advantages that the problem that water can block the pipeline in a condensation process is solved, a process process is simplified, utilization rate of cooling capacity is increased and the total energy consumption of the overall system is reduced.
Description
Technical field
The utility model relates to a kind of combined type oil gas recovery system of environmental protection and field of energy-saving technology, and specifically a kind of aromatic hydrocarbon product vaporizing oil-gas reclaims benzene homologues and makes emission reach the treatment system of discharge standard.
Background technology
Aromatic hydrocarbon product produces a large amount of oil-gas escapes in the processes such as accumulating, sale.This causes a large amount of petroleum resources wastes on the one hand, reduces the economic benefit of enterprise, causes on the other hand serious environmental pollution.The benzene homologues that is gathered in ground brings great potential safety hazard to the business and consumer, jeopardizes the safety in production of enterprise, directly affects operating personnel and surrounding environment personnel's health.Therefore, it is very necessary the benzene homologues of loss being reclaimed.
Traditional air separator of oxygenerator and technology have condensation method, absorption process, absorption method and group technology etc.WO9604978 adopts active carbon as adsorbent, uses alternately regeneration-absorbing process of two towers, the vavuum pump pressure-swing desorption, and desorption gas reclaims through condenser condenses.During the charcoal absorption oil-gas component, exotherm makes active carbon bed that larger temperature rise be arranged, and when particularly gas concentration was higher, active carbon bed very easily produced the phenomenon of hot-spot, thereby had reduced the service life of adsorbent, made operating process have potential safety hazard.
CN1494454A discloses a kind of employing active carbon adsorption and has reclaimed organic device, after absorption stops, adopting steam desorption absorption organic component, then enters condenser condenses and reclaims, and introduces a large amount of steam-condensations, has increased the device operating cost.CN1522785 discloses a kind of oil-gas recovery method, with oil gas compression cooling, adsorbs under the condition of pressurization, and the weak point of the method is that when handling oil tolerance was unstable, when particularly oil and gas content fluctuated widely, compressor was difficult to stable operation.
CN101342427A discloses a kind of condensation-adsorption combined technology and has reclaimed oil gas.Oil gas is realized part oil-gas component condensation separation through supercooling-condensation first, and solidifying oil gas is reclaimed by absorption-pressure-swing desorption, and absorption tail gas qualified discharge, desorb oil gas return cooling device and collect air-fuel mixture and enter condenser.Because desorb oil gas causes that with the collection air-fuel mixture oil gas back-mixing has reduced the dew point of denuded oil gas, requires the temperature of condensation lower, thereby has greatly increased the operating cost of this condensation-adsorption combined technology.
CN1621131A discloses a kind of compression-cooling-film and has separated group technology recovery oil gas, and oil gas is isolated hydrocarbon through cooling liquid again through after the two stages of compression, and solidifying oil gas adopts film separation organic hydrocarbon.But this technological process is complicated, and the gas compression energy consumption is high, and C
1, C
2Component is difficult to recovery and causes discharging gas hydrocarbon concentration height.
CN101161590A discloses a kind of condensation-compression-film and has separated group technology recovery oil gas, oil gas reclaims organic hydrocarbon through condensed in two stages, not solidifying oil gas qualified discharge after pressurization-film separates, but this system's investment is higher, oil gas is chilled to about 10 ℃ in advance, separates to deviate from the part moisture content in the waste gas, and water content is still greater than 1% in the waste gas after the precooling, this moisture precooling gas is cooled to-30 ℃, has the problem of the icing blocking pipe of condensed water.
The utility model content
For the deficiencies in the prior art, the utility model provides a kind of gas recovery system for oil, and gas recovery system for oil described in the utility model has the advantages such as safe and reliable, that equipment is simple, operating cost is low.
The utility model provides a kind of combined type benzene homologues recovery system, described recovery system comprises compressor, gas-liquid direct contact heat transfer device, the dehydration adsorption tanks, membrane separator, condenser, condensate pump, wherein, inlet line is compressed machine successively, the gas-liquid direct heat exchanging device, the dehydration adsorption tanks are connected with membrane separator, and the outlet of membrane separator infiltration gas is connected with condenser gas phase entrance by pipeline, and the condenser overhead outlet is connected with the suction port of compressor by pipeline, the condenser outlet at bottom is divided into three the tunnel, lead up to the pipeline discharger, another road is connected with condenser top condensate liquid entrance through pipeline, and Third Road is connected with the condensate liquid entrance of gas-liquid direct heat exchanging device through pipeline.
In the utility model gas recovery system for oil, described dehydration adsorption tanks are generally two or more, switch to use preferred 2.Described dehydration adsorption tanks can be for vertical or horizontal.The adsorbent that adsorbent normal operation this area is commonly used, such as active carbon, NACF, molecular sieve, silica gel etc., the consumption of adsorbent is specifically determined according to unit scale.
In the utility model gas recovery system for oil, described compressor can adopt liquid-piston compressor, screw compressor, screw compressor etc., preferred liquid rotary compressor.
In the utility model gas recovery system for oil, described gas-liquid direct contact heat transfer device is vertical or horizontal.
In the utility model gas recovery system for oil, membrane module can be spiral wound, plate and frame or doughnut formula membrane module in the described membrane separator.Wherein film can adopt organic film assembly and inorganic membrane assembly.
In the utility model gas recovery system for oil, described condenser can be shell-and-tube heat exchanger, plate type heat exchanger or tube-sheet heat exchanger.
Compared with prior art, the utility model combined type benzene homologues recovery system has following effect: combined type benzene homologues recovery system described in the utility model, adopt compression condensation-film to separate group technology and reclaim benzene homologues, reduced system energy consumption, and improved the benzene homologues rate of recovery.Benzene homologues recovery system described in the utility model owing to increased the dehydration adsorption tanks, has reduced the benzene homologues condensation and has reclaimed needed energy consumption, and can keep away the problem of moisture blocking pipe in condensation process fully.The utility model benzene homologues recovery system adopts self condensate to make cooling medium, and band can reduce the system support in the utility model method, has simplified technological process, and can take full advantage of and cross cold amount in the condensate liquid.Contain aromatic hydrocarbons waste gas elder generation and condensate liquid direct heat transfer in the utility model, improved the utilization rate of cold, reduced the whole system total energy consumption.
Description of drawings
Fig. 1 is that the utility model combined type benzene homologues reclaims a kind of detailed process schematic flow sheet of technique.
The specific embodiment
Further specify the utility model gas recovery system for oil and specific embodiment and effect below by embodiment.
In the utility model combined type benzene homologues recovery system, comprise compressor 2, gas-liquid direct heat exchanging device 3, dehydration adsorption tanks 5, membrane separator 8, condenser 9 and condensate pump 10.The loss waste gas of collecting is by inlet line 1 successively compressed machine 2, gas-liquid direct contact heat transfer device 3, dehydration adsorption tanks 5 are connected with membrane separator 8 gas accesses, the outlet of membrane separator 8 infiltration gas is connected with condenser 9 gas phase entrances by pipeline, and described gas-liquid direct heat exchanging device 3 lower ends also are provided with lime set and efflux mouth 4.The condenser overhead outlet is connected with compressor 2 entrances by pipeline 14, the condenser outlet at bottom is divided into three the tunnel, lead up to pipeline 15 dischargers, another road is connected with condenser top condensate liquid entrance through pipeline 11, and Third Road links to each other with the condensate liquid entrance of gas-liquid direct heat exchanging device 3 through pipeline 12.
Concrete technology flow process when the utility model combined type benzene homologues recovery system is used is as follows, the loss waste gas of collecting enters in the gas-liquid direct heat exchanging device 3 after pressurizeing through compressor 2 by inlet line 1, pressurised exhaust gas with from condensate liquid countercurrent flow in gas-liquid direct contact heat transfer device 3 of condensing tower, remove the part restructuring minute aromatic hydrocarbons in the waste gas, and efflux mouthful 4 dischargers by the lime set of heat exchanger bottom.Enter in the dehydration adsorption tanks 5 after pressurised exhaust gas is cooled off through direct heat transfer, cold gas is interior through adsorption dewatering at dehydration adsorption tanks 5, becomes dry gas after the waste gas dehydration, and water content is less than 100mg/m in the dry gas
3After dehydration adsorption tanks 5A water separation capability is reduced to a certain degree, switch and use dehydration adsorption tanks 5B, the adsorption tanks 5A that will dewater adopts low-pressure steam 6 to regenerate, regeneration gas 7 outer discharge devices, dehydration adsorption tanks 5A/5B switches use.The dried gas of process enters in the membrane separator 8 to be processed, but do not permeate the purified gas qualified discharge, be rich in benzene homologues in the infiltration gas, infiltration gas enters and will permeate most benzene homologues condensation separation in the gas in the condenser, condensate liquid is promoted by condensate pump, wherein a part of condensate liquid is by pipeline 15 dischargers, another road in pipeline 11 return condensed devices as spray liquid, Third Road is circulated to the direct contact heat transfer device as the cold medium of direct contact heat transfer device through pipeline 12, and uncooled gas returns the entrance of compressor 2 in the condenser by pipeline 14.
Claims (7)
1. combined type benzene homologues recovery system, described recovery system comprises compressor, gas-liquid direct contact heat transfer device, the dehydration adsorption tanks, membrane separator, condenser, condensate pump, wherein, inlet line is compressed machine successively, the gas-liquid direct heat exchanging device, the dehydration adsorption tanks are connected with membrane separator, and the outlet of membrane separator infiltration gas is connected with condenser inlet by pipeline, and the condenser overhead outlet is connected with the suction port of compressor by pipeline, the condenser outlet at bottom is divided into three the tunnel, lead up to the pipeline discharger, another road is connected with condenser top condensate liquid entrance through pipeline, and Third Road links to each other with the condensate liquid entrance of gas-liquid direct heat exchanging device through pipeline.
2. according to system claimed in claim 1, it is characterized in that: described gas-liquid direct contact heat transfer device is vertical or horizontal.
3. according to system claimed in claim 1, it is characterized in that: described dehydration adsorption tanks are at least two and switch use, and described dehydration adsorption tanks are vertical or horizontal.
4. according to system claimed in claim 1, it is characterized in that: described compressor is liquid-piston compressor, screw compressor or screw compressor.
5. according to claim 1 or 4 described systems, it is characterized in that: described compressor is liquid-piston compressor.
6. according to system claimed in claim 1, it is characterized in that: membrane module is spiral wound, plate and frame or doughnut formula membrane module in the described membrane separator.
7. according to system claimed in claim 1, it is characterized in that: described condenser is shell-and-tube heat exchanger, plate type heat exchanger or tube-sheet heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220546295 CN202860371U (en) | 2012-10-24 | 2012-10-24 | Combined-type benzene series recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220546295 CN202860371U (en) | 2012-10-24 | 2012-10-24 | Combined-type benzene series recycling system |
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| Publication Number | Publication Date |
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| CN202860371U true CN202860371U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220546295 Expired - Lifetime CN202860371U (en) | 2012-10-24 | 2012-10-24 | Combined-type benzene series recycling system |
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| CN (1) | CN202860371U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104826354A (en) * | 2015-05-19 | 2015-08-12 | 南京都乐制冷设备有限公司 | Condensed type benzene recycling system of coking plant and condensed type benzene recycling method |
| CN109331612A (en) * | 2018-12-08 | 2019-02-15 | 大连福佳·大化石油化工有限公司 | Improved VOC recovery system and its recovery method |
| CN111821802A (en) * | 2019-04-23 | 2020-10-27 | 青岛达能环保设备股份有限公司 | Wet desulphurization white plume and wastewater reduction cooperative treatment system |
-
2012
- 2012-10-24 CN CN 201220546295 patent/CN202860371U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104826354A (en) * | 2015-05-19 | 2015-08-12 | 南京都乐制冷设备有限公司 | Condensed type benzene recycling system of coking plant and condensed type benzene recycling method |
| CN109331612A (en) * | 2018-12-08 | 2019-02-15 | 大连福佳·大化石油化工有限公司 | Improved VOC recovery system and its recovery method |
| CN111821802A (en) * | 2019-04-23 | 2020-10-27 | 青岛达能环保设备股份有限公司 | Wet desulphurization white plume and wastewater reduction cooperative treatment system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |
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| CX01 | Expiry of patent term |