VOCs waste gas treatment system and method in railway oil tank truck cleaning process

Abstract

The invention provides a VOCs waste gas treatment system and method in a railway oil tank truck cleaning process. The system comprises a high-concentration waste gas pretreatment device and a high-temperature oxidation treatment device, wherein the output end of the high-concentration waste gas pretreatment device is communicated with the input end of the high-temperature oxidation treatment device, the high-concentration waste gas pretreatment device is used for carrying out sedimentation alkali washing pretreatment on high-concentration waste gas generated by cooking and replacement, the input end of the high-temperature oxidation treatment device is further communicated with an exhaust end of low-concentration waste gas generated by water washing and drying, and the high-temperature oxidation treatment device is used for carrying out high-temperature oxidation treatment on the mixed high-concentration waste gas and low-concentration waste gas. According to the invention, high treatment efficiency and stable and up-to-standard emission concentration can be ensured, so that the purposes of environmental protection, emission reduction and improvement of the working environment of workers and the air quality of the ambient environment are achieved.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a VOCs waste gas treatment system and a waste gas treatment method in the cleaning process of railway oil tank cars. Background technique [0002] Railway tank cars are an important tool for transporting liquid materials, and are widely used in the transportation of petroleum, chemical, edible oil and other substances. Since tank cars must be cleaned internally before reloading or overhauling, the cleaning of railway tank cars is an important link in the process of liquid logistics transportation. The tank car cleaning process generally includes several processes such as removing residual oil, cleaning, air drying, post-processing and quality inspection. The cleaning process is the key process to ensure the quality and speed of tank washing, and it is also the most labor intensive in the traditional manual tank car cleaning method. , The process that is most harmful ...

AI Technical Summary

Problems solved by technology

[0006] At present, the VOCs exhaust gas in the railway oil tanker cleaning industry is mostly discharged in an unorganized form, or the collection efficiency of the collection pipeline is low, resulting in a low concentration of the exhaust gas to be treated, and most of the pollutants are still discharged into the atmosphere.

Even if some enterprises are equipped with terminal treatment devices, most of them stay in low-efficiency treatment processes such as spraying, low-temperature plasma, photocatalysis or single activated carbon adsorption. This phenomenon will undoubtedly have adverse effects on the environment

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