Air Purification System on Reduction of CO2 Concentration Using Low Temperature Liquefaction

Abstract

For a closed working environment, the CO2 content in the air in a closed space will rise continuously due to personnel breathing and some equipment or electronic devices, and even exceed the allowable content in the normal working environment. In order to prevent the CO2 content from exceeding the standard in the closed working environment, the method of low temperature liquefaction is used to separate the CO2 in the air. Through simulation calculation and comparison of key parameters of the process of using cascade liquefaction and nitrogen expansion liquefaction to reduce CO2 concentration in air, it is concluded that it is feasible to use cryogenic liquefaction method to separate carbon dioxide from air to purify air and improve air quality in confined space.