| 摘要 |
PURPOSE:To efficiently carry out purging by using only the raw gaseous mixture in the pressure increasing stage, compressing and heating the gaseous product by adiabatic compression in the purging stage, and supplying the gaseous product to an adsorption tower. CONSTITUTION:A gaseous mixture contg. CO, CO2, and N2 is introduced into the tower D wherein the desorption and recovery stage is finished, and compressed to the atmospheric pressure. The mixture then enters into the adsorption stage, adsorption is continued until the breakthrough of N2 and CO2 occurs, the outlet gas from a tower C after being purged is introduced into the tower D to carry out preliminary purging, then the outlet of the tower D is closed, and the tower D is pressurized by the gas after purging. The gaseous product is then compressed and heated by the adiabatic compression at that time, and introduced into the tower D to carry out purging. The pressure is then turned off to the atmospheric pressure, and the adsorbed CO is desorbed and recovered through a vacuum pump. The cycle is repeated, and the towers A-D are successively used. |
