关键词: 加氢催化剂, 硫化剂, 器内预硫化, 器外预硫化

Abstract: Two presulfurization technologies for hydrogenation catalyst are introduced. One is in-situ presulfurization technology，and the other is ex-situ presulfurization technology. The catalyst presulfurization reaction principle is expounded，and the vulcanizing agent is compared. The characteristics of dry sulfurization and wet sulfurization technologies are discussed，i.e.，dry sulfurization technology is mainly applied to high contain molecular sieve in hydrogenation catalyst，and wet sulfurization technology is mainly applied to hydrotreating catalyst. By comparing in-situ presulfurization and ex-situ presulfurization technology，research status on ex-situ presulfurization technology is summarized，i.e.，ex-situ presulfurization technology needs short starting period and leads less environment pollution，and it will replace existing presulfurization technology gradually and become a main presulfurization technology for hydrogenation catalyst. Ex-site presulfurization technology will be the focus of technical development for hydrogenation catalyst in the future.

Key words: hydrogenation catalyst, vulcanizing agent, ex-situ presulfurization, in-situ presulfurization