By transformation of the downcomer of the Claus gas separator,methanol entrainment by Claus gas is eliminated,the oil content in the methanol in the system reduced,and good economic benefit obtained.

• 对克劳斯气分离器降液管改造后,消除了克劳斯气夹带甲醇的现象,降低了系统甲醇中的油含量,取得了较好的经济效益。