Fundamentals and process of low-temperature methanol wash
Author: Ma Bai-tong
Tutor: Yang Xu-zhuang
Abstract:
Low-temperature methanol wash was a gas purification technology codeveloped by Lynd and
Lurgi Co. in Germany in 1950s. In the process, cold methyl alcohol which has great solubility
to acidic gas at low temperatures was used as absorbent to remove acidic gas in the raw gas.
The process is with high gas purification and selectivity, by which the sulfur and carbon
removal can be selectively carried out in different sections of the same column. The
technology of low temperature methanol wash is mature and has very good application
achievements in industry, which was widely employed in the gas purification processes such
as the synthesis of ammonia, methanol and other carbonyls, town gas, industrial hydrogen
production and sulfur removal from natural gas. Most of the domestic large scale ammonia