A treatment method and device for high-concentration organic waste gas

Abstract

The invention discloses a high concentration organic waste gas treatment method, which comprises that (1) high concentration organic waste gas enters a diesel oil absorption device, such that the organic matter concentration in the waste gas is stabilized at 5000-35000 mg / m<3> after treatment; (2) by examining and calculating the waste gas emission amount and the organic matter concentration in the step (1), the existing heating furnace having an appropriate wind distribution amount is selected, such that 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; (3) under the premise of the step (2), the absorbed waste gas in the step (1) is introduced into a gas mixer according to a certain ratio, and is mixed with the heating furnace wind distribution air; and (4) the mixed gas is conveyed into the heating furnace to burn, and the purified gas achieves the emission standard. According to the present invention, the diesel oil is used to absorb the organic matter in the waste gas and stabilize the organic matter concentration, and the existing suitable heating furnace is selected according to the concentration, such that 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 high-concentration organic waste gas. Background technique [0002] Light oil products such as gasoline contain a large amount of light hydrocarbon components, which are highly volatile and are easily volatile during storage, transportation and storage. On the one hand, it produces huge energy waste and economic losses; on the other hand, it brings various hazards to production and the environment, such as easily causing fire and explosion, polluting the environment, and causing chronic or acute poisoning after human inhalation. Therefore, oil and gas emission reduction and recovery technology has always been a key research topic in the fields of petroleum storage and transportation engineering, environmental engineering, and chemical engineering at home and abroad. At the same time, with the increasingly str...

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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 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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