CN1139421C - Process for reclaiming tail gas in oil refinery and petro-chemical plant - Google Patents
Process for reclaiming tail gas in oil refinery and petro-chemical plant Download PDFInfo
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- CN1139421C CN1139421C CNB011141328A CN01114132A CN1139421C CN 1139421 C CN1139421 C CN 1139421C CN B011141328 A CNB011141328 A CN B011141328A CN 01114132 A CN01114132 A CN 01114132A CN 1139421 C CN1139421 C CN 1139421C
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- tail gas
- gas
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- oil
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Abstract
The present invention relates to a tail gas recovery and utilization technology which can be used for energy saving and environmental protection oil refineries and petrochemical plants in petrochemical industry. The technology comprises: tail gas of tops of pressure reducing towers of distillation devices and fractionation devices in oil refineries and petrochemical plants is delivered to a gas storage tank, then the tail gas is pumped by a gas pump, the oil removal, the dehydration and the water-oil separation of the tail gas are carried out by a pressure-stabilizing separating tank, the top gas is delivered to a tail gas burner in a heating furnace through a water-sealed tank and a flame retardant device, and the top gas is burnt as fuel. The technology has the advantages of simple devices, easy operation, little investment, low cost, etc. When the technology of the present invention is used, energy of oil refineries and petrochemical plants can be fully utilized, the problem of environment pollution caused by tail gas exhaust can be solved, and the present invention is suitable for generalization and application.
Description
The present invention relates to a kind of energy-saving and environmental protection Technology that is used for petrochemical industry refining of petroleum production process.
Cleaner production is the important topic of the energy-conservation and environmental protection of petrochemical industry.For a long time, refining of petroleum enterprises such as refinery, petroleum chemical plant, pitch factory, lubricating oil plant are in the crude refining course of processing both at home and abroad, some noncondensable gases (tail gas) to water distilling apparatus, the generation of fractionation plant decompression cat head adopt the method for high altitude discharge usually, so both cause a part of energy dissipation, again the surrounding area air ambient had been caused severe contamination.At present, refinery, petrochemical plant mostly adopt water vapor to vacuumize in production run or machinery vacuumizes two kinds of decompression methods.Before a kind of method be with decompression cat head distillate gas body through condenser and one-level vacuum ejector, enter intermediate condenser again, to enter aftercondenser through the second steam vacuum ejector, the non-condensable gas (tail gas) with the aftercondenser top enters in the atmosphere then.A kind of method in back then is that decompression cat head distillate gas body is entered condenser, directly with vacuum pump the tail gas at its top is extracted out to enter in the atmosphere.Measure according to assay, contain the low-density oil hydro carbons that content is very high, thermal value is bigger usually in the decompression cat head tail gas, it is entered atmosphere is a kind of energy dissipation, causes environmental pollution again, all very unfavorable with environmental protection to increasing economic efficiency.
The object of the present invention is to provide and a kind ofly can reclaim and make full use of the decompression cat head and distillate tail gas, utilize method thereby reach energy-conservation and the dual-purpose refinery of environmental protection, petrochemical plant tail gas recycle.
Processing method provided by the present invention is to realize like this.This method is that the tail gas blow-off valve of refinery, petrochemical plant water distilling apparatus, fractionation plant decompression cat head cuts out, and the tail gas that distillates gas is sent in the gas-holder; With gas pump it is extracted out, through the voltage stabilizing separating tank, carry out deoiling, dewatering and oily water separation, top gas is passed through water-sealed tank, the flame-retardant device exhaust combustion device to the process furnace again, and burning acts as a fuel.The tail gas that adopts refinery after this Technology, petrochemical plant atmospheric and vacuum distillation unit to produce obtains recycling and no longer enters atmosphere, thereby oil both capable of saving fuel, can eliminate the pollution of these source of pollution to atmosphere and environment again.
Method equipment provided by the invention is simple, easy to implement, have less investment, low cost and other advantages, utilize it both to help refinery, petrochemical plant and make full use of the energy in process of production, can solve the problem of environmental pollution that causes because of discharging tail gas again, be suitable for and apply.
Accompanying drawing is that tail gas recycle of the present invention is utilized the method process flow diagram.
Be illustrated below in conjunction with the enforcement of accompanying drawing the inventive method technical process.Among the figure, label " 1 " is a gas-holder, and " 2 " are gas pump, " 3
1", " 3
2", " 3
3" be respectively deoiling, dewatering jar, gun barrel and storage tank in the voltage stabilizing separating tank 3, " 4 " are water-sealed tank, and " 5 " are flame-retardant device, and " 6 " are the exhaust combustion device, and " 7 " are process furnace.Wherein, gas-holder 1 can adopt the normal pressure jar of diameter 1000mm, a high 10m.Gas pump 2 adopts discharge capacity 500m
3The air compressor of/h.Voltage stabilizing separating tank 3 comprises deoiling, dewatering jar 3
1, gun barrel 3
2, storage tank 3
3Each one, its diameter is 800mm, high 1.5m.Water-sealed tank 4 diameter 1200mm, high 1.5～2m wherein adds clear water, and water surface elevation can be jar high by 2/3～4/5.Flame-retardant device 5 plays the safeguard protection effect, is a diameter, highly is the tank body of 400mm, interior dress multilayer wire netting.Exhaust combustion device 6 can adopt special nozzles.Heating 7 is the crude oil heater of refinery, the operation of petrochemical plant ordinary production.
Claims (1)
1, a kind of refinery, petrochemical plant tail gas recycle are utilized method, it is characterized in that, this method is that the tail gas blow-off valve of refinery, petrochemical plant water distilling apparatus, fractionation plant decompression cat head cuts out, and tail gas is sent into gas-holder; With gas pump it is extracted out again, carry out deoiling, dewatering and oily water separation through the voltage stabilizing separating tank; Top gas is passed through water-sealed tank, the flame-retardant device exhaust combustion device to the process furnace again, and burning acts as a fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011141328A CN1139421C (en) | 2001-06-22 | 2001-06-22 | Process for reclaiming tail gas in oil refinery and petro-chemical plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011141328A CN1139421C (en) | 2001-06-22 | 2001-06-22 | Process for reclaiming tail gas in oil refinery and petro-chemical plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1329932A CN1329932A (en) | 2002-01-09 |
| CN1139421C true CN1139421C (en) | 2004-02-25 |
Family
ID=4660806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011141328A Expired - Fee Related CN1139421C (en) | 2001-06-22 | 2001-06-22 | Process for reclaiming tail gas in oil refinery and petro-chemical plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1139421C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7117046B2 (en) * | 2004-08-27 | 2006-10-03 | Alstom Technology Ltd. | Cascaded control of an average value of a process parameter to a desired value |
| CN103768986B (en) * | 2013-09-25 | 2015-12-02 | 淄博助友润滑油科技有限公司 | For the exhaust gas treating device of industrial waste oil recycling line |
| CN106166439A (en) * | 2016-09-06 | 2016-11-30 | 刘丽霞 | A kind of sour gas alkaline cleaner |
-
2001
- 2001-06-22 CN CNB011141328A patent/CN1139421C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1329932A (en) | 2002-01-09 |
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