| 摘要 |
<p>PURPOSE:To recover an easily adsorptive component in high yield by providing a mixture gas temp. rising cocurrent purge process following an adsorption process, facilitating temp. rising and desorption from the front to the rear of adsorption tower, and desorbing from the adsorvent in the subsequent high-temp. evacuated recovery process and cocurrent purge process. CONSTITUTION:After the pressure of mixture gas is elevated by a blower 2, the gas is introduces into an adsorber 4a packed with activated alumina, etc., to recover from a passage 7. Into an adsorption tower 4b which has completed the adsorption process, a part of cleaned air, etc., flowing out from the passage 7 is heated and introduced. After that, circulation is made with a valve 12a and a valve 12b being respectively open and closed to elevate the temp. of the tower 4b by the temp.-up circulating gas. After an adsorption tower 4c which has completed the temp. rising cocurrent purge process is communicated with a vacuum pump 15, a valve 17c is opened to make a part of the cleaned air to flow countercurrently, and the adsorbent is regenerated. In the next adsorption tower 4d, a part of gas from the evacuated cocurrent purge process is heat-exchanged and cooled, thereby flowed to countercurrent. Thus, mixture gas is separated with good heat efficiency.</p> |
