Treatment method of hydrogen sulfide-containing hydrocarbon-containing waste gas
A treatment method, hydrogen sulfide technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of economic impact, high operating costs, long process flow, etc., and achieve the effect of improving the absorption effect
Active Publication Date: 2019-09-10
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
The combination of condensation and catalytic oxidation can recover most of the volatile hydrocarbons, and can also achieve up-to-standard discharge of tail gas, but its disadvantages are that the process is long, the operation cost is high, and the economy is affected
However, gas oil and kerosene usually contain hydrogen sulfide and light components, which have a serious impact on the exhaust gas after treatment, and there is no suitable method for treatment at present
[0007] The recovery and treatment technology of hydrocarbon-containing waste gas must consider the recovery cost on the one hand, and the exhaust gas compliance problem on the other hand. Although the existing methods have certain technical effects in some aspects, the comprehensive indicators need to be further improved
Method used
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Embodiment 1
[0043] Exhaust gas from the top of a sour water tank farm, the temperature is about 45°C, and the total hydrocarbon concentration is 100,000-1,000,000 mg / m 3 , the sulfide concentration is 2000~10000mg / m 3 . The absorbent is crude kerosene from the fractionation tower of the refinery at a temperature of 60°C. Gas oil enters as Figure 5 For the rotary bed shown in the structure, the bed rotation speed is 600 rpm. The liquid phase discharged from the rotating bed is cooled to 15°C and enters the bubbling bed with waste gas for hydrocarbon absorption. The gas space velocity in the bubbling bed is 60h -1 , the volume ratio of the absorbent at the inlet of the bubbling bed to the exhaust gas is 0.1, the rich absorbent discharged from the bubbling bed is used as the feed of the kerosene hydrotreating unit, the exhaust gas absorbed by gas oil or crude kerosene and the gas phase discharged from the rotating bed After the ammonia gas is mixed, the temperature is lowered to 20°C, a...
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The invention discloses a method for treating a hydrocarbon-containing waste gas containing hydrogen sulfide, and the method comprises the following steps: crude diesel or crude kerosene enters a rotating bed reactor for devolatilization pretreatment; a material discharged from a liquid phase outlet of the rotating bed reactor is used as an absorbent to enter absorption equipment to contact with the hydrocarbon-containing waste gas containing the hydrogen sulfide for reaction, and an absorbent-rich solvent discharged from the absorption equipment enters a hydrogenation device for processing; a material discharged from a gas phase outlet of the rotating bed reactor and a waste gas discharged from the absorption equipment are mixed and then enter a crystallization tower to contact with ammonia for reaction, and the waste gas discharged after the treatment is up-to-standard. The method has the advantages of being simple in process, reasonable and economic, and is suitable for the absorption method treatment process of the hydrocarbon-containing waste gas containing the hydrogen sulfide.
Description
technical field [0001] The invention relates to a method for treating waste gas, in particular to a method for treating waste gas containing hydrogen sulfide and hydrocarbons. Background technique [0002] Various oil storage tanks, dirty oil storage tanks, oil loading (ships), oil processing and certain chemical processes generally emit a certain amount of exhaust gas under normal operating conditions, and these exhaust gases contain a relatively high concentration If the hydrocarbons are not recovered effectively, on the one hand, it will cause a large waste of resources, on the other hand, it will cause serious environmental pollution, and at the same time, there will be certain potential safety hazards. [0003] The recovery and treatment methods of hydrocarbon-containing waste gas are more commonly used, such as absorption method, adsorption method, condensation method, membrane oil gas recovery technology, etc., as described in the article "Application Research of Oil ...
Claims
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IPC IPC(8): B01D53/76B01D53/52B01D53/14
Inventor 任金晨彭德强
Owner CHINA PETROLEUM & CHEM CORP