VOCs (volatile organic compounds) gas recycling apparatus

Abstract

The invention discloses a VOCs (volatile organic compounds) gas recycling apparatus, comprising: a drying tank, wherein the outer wall of the drying tank is provided with a heating device, and the drying tank is used for heating and drying VOCs gas so that hydrocarbons boil into hydrocarbon vapor; a gas-liquid separator connected with the drying tank, wherein a first filter is arranged in the gas-liquid separator, the outer wall of the gas-liquid separator is provided with a condensing device, and the gas-liquid separator is used for separating hydrocarbon gas in the hydrocarbon vapor and condensing the hydrocarbon gas; a vacuum pump connected with the drying tank through the gas-liquid separator and used for vacuumizing the drying tank; a refrigerating mechanism connected with the gas-liquid separator through the vacuum pump and used for condensing the hydrocarbon gas from the gas-liquid separator; a filtering discharging device connected with the refrigerating mechanism and used forfiltering and discharging hydrocarbon gas from the refrigerating mechanism. The VOCs gas recycling apparatus allows the VOCs content in the gas, discharged after hydrocarbon washing, to be greatly reduced, so that the gas meets the national emission standard and environmental pollution is reduced.

Description

technical field [0001] The invention relates to the field of industrial hydrocarbon cleaning, in particular to a VOCs gas recovery and treatment device. Background technique [0002] In recent years, as government departments have attached great importance to environmental protection and the personal health of workers, in the industrial cleaning industry, chlorine-based cleaning agents (dichloromethane, trichloroethane, etc.), water-based cleaning agents and hydrocarbon-based cleaning agents have been used. It can replace the traditional ODS (Ozone Depleting Substances) cleaning agent, and the hydrocarbon cleaning has the advantages of good cleaning effect, low toxicity, good compatibility with materials, stable performance, and recyclable recycling. recognized by more and more companies. However, since the hydrocarbon-based cleaning agent is a product or chemical synthesis product that has undergone advanced refining treatment from the petrochemical industry, it is volatil...

AI Technical Summary

Problems solved by technology

However, since the hydrocarbon-based cleaning agent is a product or chemical synthesis product that has undergone advanced refining treatment from the petrochemical industry, it is volatile, and the gas it volatilizes belongs to volatile organic compounds (VOCs, volatile organic compounds), which are harmful to the current environment. Certain pollution, but the current cleaning industry due to the lack of hydrocarbon gas recovery technology, incomplete treatment and other factors lead to the VOCs emission after hydrocarbon cleaning does not meet the established VOCs emission standards, the problem of exceeding the standard is becoming more and more serious, and the environmental pollution is gradually increasing. Big

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