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Oil gas recovery method

A recovery method, oil and gas technology, applied in the direction of separation methods, chemical instruments and methods, containers, etc., to achieve the effects of simple process, good absorption effect, equipment investment and operation cost reduction

Active Publication Date: 2013-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above prior art has certain technical effects in some aspects, the comprehensive index needs to be further improved, especially the economic efficiency needs to be further improved

Method used

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  • Oil gas recovery method

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Effect test

Embodiment 1

[0018] A gas oil storage tank area and a waste oil tank area discharge exhaust gas, the temperature is about 40°C, and the total oil gas concentration is 9×10 4 ~40×10 4 mg / m 3 , the sulfide concentration is 1000mg / m 3 about. First use sodium hydroxide solution to absorb and remove sulfide, after the sodium hydroxide solution absorbs, the sulfide concentration is lower than 10mg / m 3 , and then absorb the slick oil in the grease trap of the sewage treatment plant.

[0019] The absorption treatment device adopts a packed tower, and the packing is Φ25mm×25mm×2mm stainless steel Pall ring packing. The exhaust gas enters the packed tower from the bottom of the packing layer, and the slick oil enters the packed tower from the upper part of the packing layer. The gas is discharged from the top of the tower for further processing; the slick oil absorbing oil and gas is discharged from the bottom of the tower for further processing.

[0020] The operating conditions of the packed ...

Embodiment 2

[0022] A certain gasoline oxidative sweetening tail gas and liquid hydrocarbon oxidative sweetening tail gas, the temperature is about 40°C, and the total hydrocarbon concentration is 30×10 4 ~80×10 4 mg / m 3 .

[0023] A bubble tower is adopted, and a gas distributor is set in the middle of the bubble tower for secondary gas-liquid contact distribution. The slick oil enters the bubble tower from the top of the tower, and the slick oil that absorbs oil and gas is discharged from the bottom of the tower. Oxidative sweetening tail gas enters the bubble column from the bottom of the tower, and is discharged from the top of the tower. The volume space velocity of the waste gas is 1000h -1 , the liquid-gas ratio is 70L / m 3 , After 12 hours of stable operation, the oil and gas recovery rate reaches 85% to 90%.

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Abstract

The invention discloses an oil gas recovery method. In the method, oil gas in waste gas is recovered and processed by an absorption method; an absorbing agent is oil slick which is recycled from an oil separation tank of a sewage treatment plant; and the oil slick from which the oil gas is absorbed is further processed by the conventional method. In the oil gas recovery method, the oil slick of the oil separation tank is the oil gas absorbing agent; an oil slick absorbing agent has extremely low cost while an good absorbing effect is guaranteed, the oil slick after the oil gas is absorbed is processed by the conventional oil slick processing method; an independent regeneration process is not required; an oil gas absorption process has a simple process (an absorbing agent regeneration process is not required); and both equipment investment and operation cost can be obviously reduced. The method is suitable for treatment of the waste gas with higher oil gas concentration.

Description

technical field [0001] The invention relates to a method for recovering oil and gas, in particular to a method for recovering oil and gas from waste gas containing oil and gas, such as discharge gas from acidic water storage tanks, discharge gas from oil product storage tanks, tail gas from oxidative sweetening of light hydrocarbons, and the like. Background technique [0002] Various oil product storage tanks, waste oil storage tanks, acidic water storage tanks, etc. generally discharge a certain amount of exhaust gas under normal operating conditions, and some process devices such as light hydrocarbon oxidative sweetening devices also discharge more The waste gas contains a relatively high concentration of oil and gas. If it is not recycled effectively, it will cause a lot of waste of resources on the one hand, and cause serious environmental pollution on the other hand. At the same time, there are certain safety hazards. [0003] The more commonly used treatment methods f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14B01D53/18B65D90/30B67D7/54
Inventor 刘忠生王新
Owner CHINA PETROLEUM & CHEM CORP