Coking slop oil tank waste gas deodorization purifying device based on chemical absorption method

Abstract

The invention discloses a coking slop oil tank waste gas deodorization purifying device based on a chemical absorption method. The coking slop oil tank waste gas deodorization purifying device comprises a sewage tank, a coking slop oil tank, a buffer tank, a first ejector, an absorption agent circulating pipe, an air guide pipe, a first circulating tank, a pump I, a spraying head, a first absorption tower, a second absorption tower, a second ejector, a second circulating tank, a pump II and an exhaust cylinder, wherein waste gas of the coking slop oil tank and the sewage tank are concentrated to be guided out, and a great amount of oil gas and vapor, which are likely to condensate, are separated by virtue of the buffer tank, and then enter the absorption tower. Secondary cyclone plate towers are connected in series for the circular absorption, the secondary parallel-connection ejectors are installed in front of and behind the absorption towers to be used as power for guiding the gas, then an absorption agent and the waste gas are adequately mixed and absorbed again in the ejectors, and after the gas-liquid separation in the absorption agent circulating tank, the mixed liquid enters the exhaust cylinder to be discharged. The coking slop oil tank waste gas deodorization purifying device is a special petrochemical waste gas purifying device based on the chemical absorption method and has advantages of high reaction speed, high selectivity, good absorption effect, simple process, convenience in operation, safety, reliability and the like.

Description

technical field [0001] The invention relates to a deodorization and purification device for waste gas of a coking waste oil tank based on a chemical absorption method. Background technique [0002] Both petrochemical production and storage and transportation require a large number of supporting facilities. For example, the storage and transportation system includes coking waste oil tanks, sulfur-containing sewage pools, dehydration oily sewage pools in tank farms, coking sewage oil pools, waste oil tanks, and sewage pools. The hydrogen sulfide carried in the waste oil and the sulfur-containing waste gas remaining in the tank escape from the tank roof when they are stored and in and out of the oil. According to statistics, the main components of waste gas such as coking waste oil tanks are: total hydrocarbons 19.11%, hydrogen sulfide 0.2- 1.5%, hydrogen 12.43%, nitrogen 53.59%, oxygen 13.16%), the main odor component in the exhaust gas is hydrogen sulfide (200-1500mg / m 3 ), ...

AI Technical Summary

Problems solved by technology

3. Adsorption method: It is mainly used for the separation and treatment of medium and low pollutants. The principle is that the waste gas is in contact with the adsorbent, and the pollutants (absorbent) are adsorbed on the solid surface and removed (adsorption method is not suitable for treating waste gas containing hydrocarbons and sulfur. There are security risks)

Due to the petrochemical odor gas has the characteristics of large gas volume fluctuations and uneven concentration of odor gas, there is currently no relevant technical solution for effectively purifying such gases

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