The gas punified by using technology or temperature swing adsorption (TSA). The technology or the TSA is a punrifying process of gas separation, on the basis of which which adsorption property of internal surface of

adsorbent (porous solid) is variant under different temperature. At ambient temperature impurity gas is adsorbed and at temperature rise impurity gas is desorbed. The surface of molecule sieve is full of pores.  At ambient temperature, water and impurity if about 20% self weight in static adsorption can be adsorbed whilst at temperature of 350℃ it can regenerate. The purification device under control of PLC, it is switched a time automatically every 24 hours to obtain product gas of qualified purity and impurity content.