Treatment equipment for VOCs (Volatile Organic Chemicals) technological waste gas of packaging and printing industry

Abstract

The invention belongs to the technical field of air pollution prevention and control equipment, and relates to treatment equipment for VOCs process waste gas in the packaging and printing industry. The exhaust gas containing VOCS enters the adsorption device from the gas collection main pipe, and the treated exhaust gas is discharged through the purification and exhaust pipe; when the adsorption reaches saturation, the system enters the desorption cycle, and the adsorbed VOCs are desorbed by hot air, and desorbed to obtain concentrated VOCs The gas is sent to the first heat exchanger for preheating through the desorption air duct, and then transferred to the oxidation chamber for oxidation. Part of the evacuated purified gas is heated by the second heat exchanger and transferred to the adsorption box for desorption through the second heat exchanger and the desorption hot air pipe, so that the saturated adsorbent can be desorbed and regenerated. The combustion system is installed on the left facade of the oxidation chamber to provide heat for the oxidation chamber. The invention effectively solves the problem of adsorption and reuse of process waste gas discharged from ovens of gravure printing machines and composite machines with large air volume and low VOCs exhaust concentration.

Description

technical field [0001] The invention belongs to the technical field of air pollution prevention and control equipment, and relates to treatment equipment for VOCs process waste gas in the packaging and printing industry. Background technique [0002] VOCS is the abbreviation of volatile organic compounds, including hydrocarbons and aromatic hydrocarbons. Alcohols, aldehydes, amines, organic acids, etc. VOCS is extremely volatile at room temperature and will cause serious harm to the environment. When the existing equipment processes high-concentration organic gases, the concentrated waste gas passes through the heat exchanger and the hot air is used for desorption, but most of the heat of the flue gas cannot be effectively recycled, resulting in high heat energy consumption during the thermal oxidation of VOCs. Contents of the invention [0003] The purpose of the present invention is to provide processing equipment for VOCs process waste gas in the packaging and printin...

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Problems solved by technology

[0003] The purpose of the present invention is to provide treatment equipment for VOCs process waste gas in the packaging and printing industry, to overcome the problems of high energy consumption and low heat utilization efficiency in the current VOCS treatment equipment, and to provide a high-efficiency, high environmental protection, and energy-saving VOCs in the packaging and printing industry Process waste gas treatment equipment

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