Method for treating volatile sulfur-bearing organic exhaust gases

An organic waste gas and volatile technology, applied in gas treatment, separation methods, chemical instruments and methods, etc., can solve problems such as poor sulfur removal effect, secondary pollution, and difficult and efficient treatment of volatile sulfur-containing VOCs, and achieve zero Emissions, clean recycling, and improved destruction efficiency

Active Publication Date: 2018-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology has problems such as poor desulfurization effect, easy to produce secondary pollution, etc., and cannot effectively avoid the poisoning phenomenon of the non-methane total hydrocarbon gas treatment device (sulfides can easily cause non-methane total hydrocarbon destruction device poisoning)
In view of the above problems, the purpose of the present invention is to solve the problem that the volatile sulfur-containing VOCs discharged from equipment such as sewage tanks and sewage oil tanks are difficult to be efficiently treated, so that the total methane hydrocarbon content in the treated gas is ≤70mg / m 3 , Benzene content≤1mg / m 3 , the sulfide content is zero

Method used

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  • Method for treating volatile sulfur-bearing organic exhaust gases
  • Method for treating volatile sulfur-bearing organic exhaust gases
  • Method for treating volatile sulfur-bearing organic exhaust gases

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A treatment method for volatile sulfur-containing organic waste gas, comprising the steps of:

[0044] (1) Wet real-time regenerative desulfurization

[0045] The organic waste gas is transported to the absorption tower through the intake pipeline, and the desulfurization agent and catalyst are installed in the absorption tower, and the organic waste gas fully contacts with the desulfurization agent and catalyst in the absorption tower to undergo a chemical reaction, so that the sulfide in the waste gas is converted into sulfur, desulfurization The final organic waste gas enters the next process through the top of the absorption tower, and the sulfur-containing desulfurizer passes through the sulfur filter to precipitate sulfur particles, and the desulfurizer is re-sent to the absorption tower by a circulating pump for recycling. The preparation method of the above catalyst includes the following steps : In a container equipped with epichlorohydrin, add dilute sulfuric ac...

Embodiment 2

[0054] A treatment method for volatile sulfur-containing organic waste gas, comprising the steps of:

[0055] (1) Wet real-time regenerative desulfurization

[0056] The organic waste gas is transported to the absorption tower through the intake pipeline, and the desulfurization agent and catalyst are installed in the absorption tower, and the organic waste gas fully contacts with the desulfurization agent and catalyst in the absorption tower to undergo a chemical reaction, so that the sulfide in the waste gas is converted into sulfur, desulfurization The final organic waste gas enters the next process through the top of the absorption tower, and the sulfur-containing desulfurizer passes through the sulfur filter to precipitate sulfur particles, and the desulfurizer is re-sent to the absorption tower by a circulating pump for recycling. The preparation method of the above catalyst includes the following steps : In a container equipped with epichlorohydrin, add dilute sulfuric ...

Embodiment 3

[0065] A treatment method for volatile sulfur-containing organic waste gas, comprising the steps of:

[0066] (1) Wet real-time regenerative desulfurization

[0067] The organic waste gas is transported to the absorption tower through the intake pipeline, and the desulfurization agent and catalyst are installed in the absorption tower, and the organic waste gas fully contacts with the desulfurization agent and catalyst in the absorption tower to undergo a chemical reaction, so that the sulfide in the waste gas is converted into sulfur, desulfurization The final organic waste gas enters the next process through the top of the absorption tower, and the sulfur-containing desulfurizer passes through the sulfur filter to precipitate sulfur particles, and the desulfurizer is re-sent to the absorption tower by a circulating pump for recycling. The preparation method of the above catalyst includes the following steps : In a container equipped with epichlorohydrin, add dilute sulfuric ...

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Abstract

The invention relates to a method for treating volatile sulfur-bearing organic exhaust gases. The method comprises three steps, i.e., wet type real-time regeneration desulfurization, non-dipping dry-type fine desulfurization and hydrocarbon removal. According to the method, a wet type real-time regeneration desulfurization process can be used for treating sulfides in a concentration range of 0ppmto 100,000ppm and achieving the normal-temperature normal-pressure regeneration of a desulfurizer under the condition that the oxygen content of the exhaust gases is higher than 10%; and due to the non-dipping dry-type fine desulfurization, various sulfides can be removed and purified to achieve the zero discharge of the sulfides, the concentration of non-methane total hydrocarbons is further homogenized, the high efficiency of a terminal dealkylation unit is stabilized, the time for entry of non-methane total hydrocarbon gases in an explosive limit range under abnormal conditions is retarded,and thus, the safety of a terminal dealkylation system is effectively guaranteed.

Description

technical field [0001] This patent belongs to the field of organic gas treatment technology, and specifically relates to a method that can efficiently control sulfides and low-concentration non-methane total hydrocarbons within a large concentration fluctuation range. Background technique [0002] In recent years, the national and local environmental protection departments have successively promulgated stricter environmental protection standards. For example, GB31571 and GB31570 clearly stipulate that the non-methane total hydrocarbon emission limit of wastewater organic waste gas treatment equipment is ≤120mg / m 3 , Benzene≤4mg / m 3 ;The local environmental protection standard DB31 / 933-2015 "Comprehensive Emission Standard of Air Pollutants" promulgated by the latest version of Shanghai clearly stipulates that the non-methane total hydrocarbon emission limit is ≤70mg / m 3 , Benzene emission limit <1mg / m 3 . Volatilized organic waste gas from sewage tanks, waste oil tank...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/86B01D53/48B01D53/04B01D53/72
CPCB01D53/04B01D53/75B01D53/8606B01D53/8612B01D53/8668B01D2251/104B01D2253/10B01D2257/306B01D2257/708
Inventor 尹树孟刘全桢张健中
Owner CHINA PETROLEUM & CHEM CORP
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