Complete equipment for membrane VOCs purification
Market background
The organic waste gas generated during the production process is an important source of atmospheric pollution. Currently, most enterprises only use circulating water, frozen brine, or frozen ethylene glycol water condensation for the organized emission of tail gas, which can only solve the problem of partial VOCs solvent recovery. However, most solvent recovery is not complete, resulting in serious resource waste and environmental pollution.
The commonly used technologies for treating organic waste gas include destruction technology and recycling technology. Destruction technologies (such as combustion, biodegradation, plasma technology, etc.) do not create economic benefits and may also bring secondary pollution. In the recycling technology, the commonly used mainstream technologies are condensation, adsorption, and membrane separation technology. Condensation and adsorption technology has problems such as high energy consumption, large investment, large land occupation, and complex operation.
Vapor permeation membrane is a membrane separation process that utilizes the difference in the dissolution and diffusion rates of components in the membrane to achieve the separation of gas mixtures, driven by the vapor pressure difference of the components in the gas mixture. Vapor permeation membrane is mainly used in fields such as pharmaceutical, chemical, and petrochemical industries. It is an efficient separation process designed for the production characteristics of high concentration and low air flow in enterprises. It can process VOCs concentration from tens of thousands of ppm to hundreds of ppm. If coupled with other technologies, the emission concentration can reach tens of ppm, meeting national emission standards.
Advantages and characteristics of vapor permeation membranes
★ High separation efficiency and no secondary pollution: The membrane has high flux, high separation coefficient, large area of coiled membrane components, low system resistance, and product yield>95%. After comprehensive treatment, the concentration of volatile organic compounds can meet national emission standards; Not introducing new sources of pollution and not generating secondary pollution;
★ Low energy consumption in production and operation: Due to the few auxiliary equipment for membrane recovery and the lack of heating, it saves 70% to 80% energy compared to traditional separation technologies;
★ Space saving: With a compact structure and small footprint, compared to traditional separation equipment with equivalent production capacity, it can save more than 4/5 of space;
★ Easy operation: The separation process is simple, and the equipment does not require excessive adjustment operations after operation, with a high degree of automation;
★ High safety: The membrane separation equipment adopts an open processing mode, avoiding the risk of high pressure and temperature caused by closed systems. It is very suitable for the recovery and treatment of flammable and explosive organic gases.
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