A method and device for incineration treatment of organic waste gas in a refinery

Abstract

The invention relates to an incineration treatment method for refinery plant organic waste gas. Firstly, the concentration of organic matter in the waste gas is detected, and when the concentration of the organic matter is larger than the upper explosive limit, the waste gas directly enters a heating furnace to be subjected to incineration treatment; when the concentration of the organic matter is smaller than the upper explosive limit, the waste gas enters a diesel oil absorption device, the concentration of the organic matter in the waste gas is stabilized within 5000-35000 mg / m<3>, and an existing heating furnace with the proper air supply amount is selected according to the concentration and the waste gas quantity for conducting incineration treatment on the waste gas; and when no gas is exhausted, a certain amount of air is introduced into the diesel oil device, the concentration of the organic matter in the waste gas is stabilized within 5000-35000 mg / m<3> after treatment, and then the waste gas enters the heating furnace to be subjected to incineration treatment. According to the method, firstly, the concentration of the organic matter in the waste gas is detected, distribution treatment is conducted according to the different concentrations of the organic matter, normal operation of the heating furnace and a distribution draught fan thereof is not disturbed under the condition that the waste gas exhausting time and the concentration of the organic matter are uncertain, no explosive risk or potential safety hazard exists, and purified gas can reach the standard to be exhausted through incineration treatment.

Description

technical field [0001] The invention relates to the technical field of environmental protection waste gas treatment, in particular to an incineration treatment method and device for refinery 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, dirty oil storage tanks, especially sulfur-containing sewage storage tanks, etc. The components of the scattered exhaust gas 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 causes odor pollution to the su...

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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 12500mg / 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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