Biological trickling filter and process for treating oily sludge tail gases

Abstract

The invention provides a biological trickling filter for treating oily sludge tail gases. The treatment effect on the tail gases can be improved, and the equipment size can be reduced. The invention further provides a corresponding tail gas treating process. The biological trickling filter comprises a shovel. A tail gas treating channel is arranged in an inner cavity of the shovel, and comprises a tail gas inlet, a smoke treating region and an exhaust cylinder. The smoke treating region comprises tail gas treating units which are connected in sequence through isolation passages. Each tail gas treating unit comprises a gas inlet passage, a unit treating region and a gas outlet passage which are sequentially arranged from bottom to top. Between every two tail gas treating units, the gas outlet passage of the front tail gas treating unit and the gas inlet passage of the rear tail gas treating unit are respectively communicated with a top air inlet hole and a bottom air outlet hole of the isolation passage between the corresponding tail gas treating units. The gas inlet passage of the first tail gas treating unit is communicated with the tail gas inlet. The gas outlet passage of the last tail gas treating unit is connected with the exhaust cylinder.

Description

technical field [0001] The invention relates to the technical field of tail gas treatment, in particular to a biological trickling filter for oily sludge tail gas treatment and a tail gas treatment process. Background technique [0002] Petroleum substances in oily sludge are a complex hydrocarbon mixture mainly composed of hydrocarbons, which belong to mineral oil chemicals. Hydrocarbons in petroleum have a relative molecular mass ranging from tens to thousands. The boiling point ranges from room temperature to above 500°C. The new environmental protection law stipulates that hazardous waste such as oily sludge must be effectively treated to make it meet the harmless requirements of the corresponding environmental protection regulations. In the process of harmless treatment of oily sludge, tail gas containing VOCs will be generated . This exhaust gas also pollutes the environment. In the prior art, when the exhaust gas containing VOCs is treated through the biological tr...

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Problems solved by technology

[0003] In order to solve the problem of poor tail gas treatment effect in the prior art, the present invention provides a biological trickling filter for oily sludge tail gas treatment, which can increase the tail gas treatment effect and reduce the equipment volume at the same time

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