关键词: 液化石油气, 腐蚀, 脱硫剂

Abstract: Wen13-1/2 oil field liquefied petroleum gas (LPG) recovery project was CNOOC Zhanjiang branch so far the only LPG recycling project, the project had been put into operation so far, had created a good economic and social benefits.In recent years, it sometimes occured that WenChang oil field LPG products copper corrosion test was not qualified.After a series of research and demonstration, copper corrosion exceeding was demonstrated to be in relation of the hydrogen sulfide.Liquefied petroleum gas desulfurization agent Could be a good solution to the problem.This paper discussed the synthetic liquefied gas desulfurization agent, the optimum reaction conditions of:reaction time is 8h, 50% mass fraction of PMA, reaction temperature of 70 DEG C, DEA/MEA mixture of 40% mass fraction, liquefied gas desulfurizer desulfurization rate reached 99.13%.Liquefied gas desulfurization agent in the pH below 5, the reaction temperature was higher than 100 when the desulfurization efficiency will be affected.At a dosage of 50mL/min of Liquefied gas desulfurization agent for 6 months, copper corrosion test decreased from 2a to 1a.LPG products met the national standard requirements.

Key words: liguefied petroleum gas, corrosion, hydrogen sulfide scavenger