Abstract: Through correspondence and on-site investigation, the operating conditions of amine liquid installations in 28 petroleum refineries were analyzed in terms of the number of amine liquid systems, the circulation volume of amine liquid, the concentration of amine liquid, and the hydrogen sulfide content in amine liquid, and common problems, such as amine liquid foaming and equipment corrosion were investigated. The optimization suggestions for amine liquid systems were put forward, such as integrating amine liquid systems, adding purification facilities, standardizing the operation of the amine liquid, and using new desulfurizes, anti-clogging and foam suppression trays.

Key words: amine liquid system, hydrogen sulfide, thermally stable salt, desulfurization