Application scenarios of membrane separation in pharmaceutical industry waste gas treatment

Application scenarios of membrane separation in pharmaceutical industry waste gas treatment

Waste gas treatment in the pharmaceutical industry is facing challenges such as complex composition, large amount of solvent volatilization and strict emission standards. Membrane separation technology has formed a number of mature application scenarios in pharmaceutical waste gas treatment due to its advantages of high separation efficiency, low energy consumption and no secondary pollution.

Reactor non-condensable gas recovery is the main application scenario. In the pharmaceutical production process, the non-condensable gas discharged from the reactor contains a large amount of organic solvents, such as dichloromethane, acetone, methanol, tetrahydrofuran, etc. Membrane separation technology is usually used in combination with condensation and adsorption to form a three-stage process of condensation plus membrane separation plus adsorption. The waste gas is first pre-cooled by the condensation unit, and part of the high boiling point components are liquefied and recovered. The non-condensable gas enters the membrane separation unit, and is selectively separated by using the difference in the permeation rate of organic matter and air in the membrane. After being enriched, the organic matter is recycled back to the condensation system for further recovery, and the overall recovery rate can reach more than 95%.

Halogenated hydrocarbon waste gas treatment is another important scene. The pharmaceutical industry uses a large number of halogenated hydrocarbons such as dichloromethane and chloroform as extraction solvents. This kind of material can not be burned at high temperature, otherwise it will produce dioxin and strong corrosive gas. Membrane separation technology operates at low temperatures and is a suitable choice for the treatment of halogenated hydrocarbon waste gases. Through the combined process of compression cooling, membrane separation and adsorption, the recovery rate of dichloromethane can be increased to more than 95%, while avoiding the risk of high temperature decomposition.

The dry waste gas of raw materials is also suitable for membrane separation treatment. The exhaust gas discharged from the drying process of raw materials is usually small in air volume, high in concentration, and high in solvent recovery value. Membrane separation technology can recover more than 90% of the solvent in the waste gas, and the purity can reach more than 90% after condensation and liquefaction, which can be directly reused in production.

LuoyangWohong PetrochemicalEquipment Co., Ltd. can provide customized membrane separation waste gas treatment solutions for the pharmaceutical industry. The company is located in the W2-1 of Dongda Science and Technology Industrial Park, Luoxin Industrial Agglomeration Zone, Xin 'an County, Luoyang City, and its official website is www.wohongshihua.com.