An organic waste gas treatment device and method

Abstract

The invention relates to a device and a method for treating organic waste gas. The device includes a pretreatment water-washing reactor and a photocatalytic reactor, an atomizer, a scrubber and a dehydration demister are sequentially arranged in the pretreatment water-washing reactor from bottom to top; a water tank is arranged the bottom of the atomizer, and the top of the atomizer is provided with a plurality of atomizing nozzles; the scrubber includes a plurality of washing layers arranged in parallel; the dehydration demister includes a mesh grid plate arranged at the lower part and a silica gel drying agent spread on the mesh grid plate; and the photocatalytic reactor is a closed box body, a reflective layer is arranged on the inner surface of the box body, the photocatalytic reactorincludes a plurality of transversely arranged photocatalytic columns, and an ultraviolet lamp tube is arranged in the middle of each photocatalytic column. The pretreatment water-washing reactor in the entire organic waste gas treatment device, so acidic gases in the organic waste gas are firstly removed to prevent the device from being corroded and shortening the service life and greatly improvethe photocatalytic oxidation efficiency; and the overall device has a compact structure, and is convenient to run and manage.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to an organic waste gas treatment device and method. Background technique [0002] With the acceleration of industrialization and the deterioration of the environment caused by development, especially air pollution, it has become one of the urban environmental protection problems that need to be solved urgently. VOCs are the most common pollutants emitted by industries such as petrochemical, pharmaceutical, printing, shoemaking and spray painting. These substances mainly include hydrogen sulfide, mercaptans, ammonia, amines, nitro compounds, hydrocarbons, fatty acids, alcohols, phenols, esters and organic halogen derivatives. Most of these organic substances are toxic, and some have been listed as carcinogens, such as vinyl chloride, benzene, and polycyclic aromatic hydrocarbons. Most VOCs are flammable and explosive, posing a threat to the safety of produc...

AI Technical Summary

Problems solved by technology

For example, the publication number is CN107998881A, which discloses a modular UV-nano TiO for low-concentration organic waste gas treatment 2 Photocatalytic device, which uses wool as a carrier to load TiO 2 , using a UV lamp as a light source to treat organic waste gas, but the manufacturing process of the device is complicated and the cost is high; the publication number is CN105879664A which discloses a photocatalytic reactor for treating organic waste gas, and the device uses activated carbon as a carrier to load TiO 2 , but the saturated activated carbon produced by the activated carbon adsorption device is a hazardous waste, and improper treatment can easily cause secondary pollution and increase costs

At the same time, neither of the two technologies is equipped with a pretreatment water washing reactor, and the acid gas in the organic waste gas is easy to corrode the device, shortening the service cycle

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