What working conditions are suitable for compression condensation membrane separation? The concentration, air volume and components are clarified at one time.

What working conditions are suitable for compression condensation membrane separation? The concentration, air volume and components are clarified at one time.

The compression condensation membrane separation process is not suitable for all exhaust gas scenarios, and the selection of the right conditions can maximize its value. The following from the concentration, air volume, composition of the three dimensions of its scope of application.

First, the concentration. This process is most suitable for medium and high concentration organic waste gas, and it is usually recommended that the inlet VOCs concentration is more than two grams per cubic meter. The higher the concentration, the better the economy of recovery. The inlet concentration of 5 to 20 grams per cubic meter is its best range, and the payback period is generally one to two years. When the concentration is less than one gram per cubic meter, the recovery value decreases and the economy becomes worse. When the concentration exceeds the 5%, safety measures are required, such as dilution or addition of flammable gas detection interlocks.

Second, the wind. The air volume of this process is usually between five million and twenty thousand cubic meters per hour. Small air volume of 500 to 2,000 cubic meters is suitable for skid-mounted all-in-one machines, with small footprint, fast installation and low investment. The stroke volume of 2,000 to 10,000 cubic meters is its main range, with the best economy. A single condensing membrane separation equipment with a large air volume of more than 20,000 cubic meters per hour has a higher investment and can be considered in combination with other processes, such as zeolite runner concentration and membrane condensation.

Third, the components. This process has a good recovery effect on most common organic solvents. Ketones such as acetone and butanone, esters such as ethyl acetate and butyl acetate, alkanes such as n-hexane and cyclohexane, aromatic hydrocarbons such as benzene, toluene and xylene, halogenated alkanes such as dichloromethane and chloroform, alcohols such as methanol, ethanol and isopropanol are suitable. For low boiling point substances such as methyl chloride, ethane, lower condensation temperatures are required and energy consumption increases. For easily polymerizable substances such as styrene, low temperature conditions are instead favorable.

Unsuitable working conditions include low-concentration exhaust gas with inlet concentration continuously lower than 500 milligrams per cubic meter, which has little recovery value. Exhaust gas containing a large amount of particulate matter or oil mist needs to be pre-treated. For scenarios with high air volume and low concentration with air volume exceeding 50,000 cubic meters per hour, it is not as economical to use alone as the concentration combination scheme.

To sum up, the most suitable working condition for compression condensation membrane separation is organic solvent waste gas with medium and high concentration of more than two grams per cubic meter, medium and small air volume of 500 to 20,000 cubic meters per hour, and recovery value. If your working conditions meet these conditions, this process is the preferred scheme to take into account the emission standards and economic benefits. LuoyangWohong PetrochemicalEquipment Co., Ltd. provides free working condition analysis to help you determine whether it is suitable for this process. The company is located at W2-1, Dongda Science and Technology Industrial Park, Luoxin Industrial Cluster Zone, Xin’an County, Luoyang City. Website: www.wohongshihua.com.