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Oil gas absorption method

An absorption method, oil and gas technology, applied in separation methods, chemical instruments and methods, containers, etc., to achieve the effect of reducing water content, good absorption effect, and favorable for subsequent treatment

Active Publication Date: 2011-05-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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Comparison scheme
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 use the scum in the air flotation tank of the sewage treatment plant for absorption treatment.

[0019] The absorption treatment device adopts a packed tower, the packing is Φ25mm×25mm×2mm stainless steel Pall ring packing, the waste gas enters from the bottom of the packing layer, the scum enters from the upper part of the packing layer, the purified gas is discharged from the top of the tower for further treatment, and the liquid phase is the absorption The scum containing oil and gas is discharged from the bottom of the tower for further treatment; the scum will be divided into tw...

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] The absorption treatment device adopts a packed tower, the packing is Φ25mm×25mm×2mm stainless steel Pall ring packing, the waste gas enters from the bottom of the packing layer, the scum enters from the upper part of the packing layer, the purified gas is discharged from the top of the tower for further treatment, and the liquid phase is the absorption The oil and gas scum is discharged from the bottom of the tower for further treatment.

[0024] The operating conditions of the packed tower are: the volume ratio of liquid (scum) to gas (exhaust gas) is 200L / m 3 , the volume space velocity of exhaust gas is 800h -1 , After 12 hours of stable operation, the recovery rate of oil and gas in the exhaust gas is about 82% to 87%.

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Abstract

The invention discloses an oil gas absorption method, which realizes the recovery and processing of oil gas in exhaust gas containing the oil gas by employing absorption process. Scum is recovered by a floatation tank of a sewage treatment plant, and is further processed after absorbing the oil gas. The oil gas absorption method of the invention using the scum of the floatation tank as oil gas absorbent has good absorption effect. The scum absorbent has low cost. The scum after absorbing oil gas is just processed according to present scum processing method, and does not need regeneration process. The oil gas absorption process is simple. The adsorbent regeneration process is unnecessary. Both equipment investment and operation cost can be obviously reduced. In addition, after the scum is used as the exhaust gas absorbent, a part of water therein can be decreased, volume of the scum can be obviously reduced, so as to facilitate subsequent processing. The method of the invention is applicable to the treatment of the exhaust gas containing high-concentration oil gas.

Description

technical field [0001] The invention relates to an oil-gas absorption method, in particular to an oil-gas absorption method for oil-gas-containing waste gas such as acidic water storage tank discharge gas, oil product storage tank discharge gas, light hydrocarbon material oxidative sweetening tail gas 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 for oil-gas-containing waste gas i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14B01D53/18B65D90/30B67D7/54
Inventor 刘忠生王海波齐慧敏
Owner CHINA PETROLEUM & CHEM CORP
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