In practical industrial application, adsorption separation can be divided into pressure swing adsorption and temperature swing adsorption. From the adsorption isotherm of the adsorbent, it can be seen that the adsorption capacity of the adsorbent for impurities is large at high pressure and small at low pressure. At the same time, it can be seen from the adsorption isobaric curve that under the same pressure, the adsorption capacity of adsorbent is larger at low temperature and smaller at high temperature. The former is called pressure swing adsorption (PSA), and the latter is called temperature swing adsorption (TSA).

In practical industrial application, TSA, PSA or TSA + PSAI are generally selected according to the gas source composition, pressure and product requirements. Due to the need for temperature rise, the temperature swing adsorption process has a long cycle and large investment, but it is completely regenerated, and is usually used to purify trace impurities or refractory impurities. The PSA process has the advantages of short cycle, high utilization rate of adsorbent, relatively small amount of adsorbent and no need of additional heat exchange equipment. It is widely used in the separation and purification of air volume and multi-component. In industrial pressure swing adsorption (PSA) process, the adsorbent usually adsorbs the easily adsorbed components in the mixed gas at room temperature and high pressure. The components with poor adsorbability flow out from one end of the bed, and then the pressure of the adsorption bed is reduced to normal pressure, so that the adsorbed components are desorbed and discharged from the other end of the bed, so as to realize gas separation and purification, and regenerate the adsorbent at the same time.

In practical industrial application, TSA, PSA or TSA + PSAI are generally selected according to the gas source composition, pressure and product requirements. Due to the need for temperature rise, the temperature swing adsorption process has a long cycle and large investment, but it is completely regenerated, and is usually used to purify trace impurities or refractory impurities. The PSA process has the advantages of short cycle, high utilization rate of adsorbent, relatively small amount of adsorbent and no need of additional heat exchange equipment. It is widely used in the separation and purification of air volume and multi-component. In industrial pressure swing adsorption (PSA) process, the adsorbent usually adsorbs the easily adsorbed components in the mixed gas at room temperature and high pressure. The components with poor adsorbability flow out from one end of the bed, and then the pressure of the adsorption bed is reduced to normal pressure, so that the adsorbed components are desorbed and discharged from the other end of the bed, so as to realize gas separation and purification, and regenerate the adsorbent at the same time.