Method for processing sulphur-containing exhaust air with fetor escaped from storage tank

A treatment method and technology for waste gas, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of large adsorbent amount, increased equipment investment, low adsorption efficiency, etc.
CN101347708AActive Publication Date: 2009-01-21CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2009-01-21

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Abstract

The invention discloses a method for treating sulfur-bearing niffy waste gas emitted from a storage tank, which includes the following process: the waste gas is firstly decarbolized and then sequentially passes through a noncombustible adsorbent bed layer and a flammable adsorbent bed layer; the noncombustible adsorbent includes silica gel, molecular sieve or alumina, the flammable adsorbent includes activated carbon or activated carbon fibers, the volume ratio of noncombustible adsorbent to flammable adsorbent is 20:80 to 80:20. By adopting the method of the invention, the concentration of the niffy gas emitted from the storage tank can meet the relevant national standards, and the hydrocarbon concentration of waste gas also can meet the relevant national standards; furthermore, the treatment process is simple and has no potential safety hazard. The method of the invention is mainly applied to the places where sulphid and hydrocarbon waste gas can be generated, for instance, an oil tank, an oily sewage tank, a device which can generate sulfur-bearing hydrocarbon waste gas in hydrocarbon processing course, etc.
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Description

technical field

[0001] The invention relates to a method for treating malodorous waste gas of a storage tank. This process adopts the absorption-two-stage adsorption process to purify the sulfur-containing and odorous waste gas escaped from the storage tank and recover the hydrocarbons in the waste gas. After being purified by the process of the present invention, the exhausted sulfur-containing and odorous waste gas from the storage tank can reach relevant national standards. It is especially suitable for the field of purification and recovery of sulfur-containing and odorous waste gas produced by oil storage tanks, oily sewage tanks and hydrocarbon processing equipment. Background technique

[0002] Refinery contains various storage tanks, such as sulfur-containing sewage tanks, oil intermediate tanks, etc., which are important sources of odor gas emission. The odor gas emitted contains high concentrations of volatile hydrocarbons, hydrogen sulfide, organic sulfide, ammon...

Claims

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