A treatment method and device for sulfur-containing organic waste gas

Abstract

The invention discloses a sulfur-containing organic waste gas treatment method, which comprises that (1) when discharged gas exists, waste gas enters a diesel oil absorption device through an induced fan, and when discharged gas does not exist, a certain amount of air is introduced to maintain the stable pressure of the absorption device and make the organic matter concentration in the waste gas be stabilized at 5000-35000 mg / m<3> after treatment; (2) the absorbed waste enters an alkali liquid absorption device to remove the remaining sulfide in the waste gas; (3) by examining and calculating the waste gas emission amount and the organic matter concentration in the step (2), the existing heating furnace having an appropriate wind distribution amount is selected, and the organic matter concentration is less than 200 mg / m<3> and the oxygen consumption amount of the oxidation pollutant is less than 0.05% after the waste gas and the heating furnace wind distribution air are mixed; (4) under the premise of the step (3), the absorbed and treated waste gas in the step (2) is introduced into a gas mixer according to a certain ratio, and is completely mixed with the heating furnace wind distribution air; and (5) the mixed gas is conveyed into the heating furnace to burn, and the purified gas achieves the emission standard. According to the present invention, under the premise of the non-determined waste gas emission time and the non-determined organic matter concentration, the normal running of the heating furnace and the wind distribution fan cannot be interfered, and the explosion risk and the insecurity hidden danger do not exist.

Description

technical field [0001] The invention relates to the technical field of environmental protection waste gas treatment, in particular to a treatment method and device for sulfur-containing organic waste gas. Background technique [0002] The composition of organic waste gas is complex, causing serious harm to the environment and human beings, and has become one of the priorities of my country's environmental protection work. In the process of crude oil processing in refineries, some facilities inevitably emit a large amount of odorous and polluted waste gas, such as sulfur-containing sewage storage tanks, semi-finished oil storage tanks, sewage oil storage tanks, especially sulfur-containing sewage storage tanks, oxidative desulfurization Alcohol process tail gas, etc., the exhaust gas components are complex, and the odor pollutants in the exhaust gas include hydrogen sulfide, organic sulfide, benzene series and other VOCs (volatile organic compounds). The exhaust gas not only...

AI Technical Summary

Problems solved by technology

However, this method can only enter the follow-up incineration system to continue processing when the exhaust gas concentration is lower than 1 / 4 of the explosion limit, and it is only suitable for the treatment of lower concentration organic waste gas

For high-concentration organic waste gas, since the lower explosion limit of most organic substances is 20,000-50,000 mg / m 3 , because the exhaust gas concentration must be controlled to be lower than 1 / 4 of the explosion limit before it can enter the subsequent incineration treatment, that is, the total hydrocarbon concentration of the exhaust gas is higher than 12500 mg / m3 3 The exhaust gas will be discharged directly from the emergency discharge port, which will not achieve the purpose of treatment

In addition, this device also needs to be equipped with a special air volume balance treatment, and the absorption device in this process only pre-treats impurities, particles and acidic substances in the exhaust gas, and cannot recover hydrocarbons in the exhaust gas, resulting in a large amount of waste of hydrocarbon resources. , poor economy

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