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《Petroleum Processing and Petrochemicals》 2003-01
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DISCUSSION ON THE EXISTING PROBLEM OF LPG DESULFURIZATION AND SWEETENING PROCESS

Lin Xiaohong (Refinery of Zhenhai Refining & Chemical Company , Ningbo 315207)  
The cause of the operation problems occurred in amine desulfurization plant such as the accumulation of heat-stability salts, entrainment of amine liquid, the LPG quality and their resolution are discussed. The entrainment of amine liquid is the main reason that affects the unqualified copper strip corrosion and the residue of LPG. Revamping the tradition amine process with vortex separator system and fixed bed desulfurizing system can effectively minimize the said problems. The problems of disulfide and caustic liquid entrainment and waste caustic residue existed in caustic sweetening process are discussed. The improving technical route is proposed.
【Key Words】: desulfurization sweetening heat stable salts corrosion control foaming
【CateGory Index】: TE626
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