器内和器外预硫化技术

Technology for In-situ Presulfurization and Ex-situ Presulfiding

本文对常用的两种加氢催化剂预硫化技术:器内预硫化和器外预硫化技术进行了介绍,对催化剂的预硫化作用原理予以阐述,并对比了不同的硫化剂,本文详细分析了干法硫化及湿法硫化的原理及特点。干法硫化技术应用于分子筛含量较高的加氢催化剂,湿法硫化技术应用于要求较高的加氢催化剂。通过比较预硫化技术在器内和器外的各自特点,分析出器外硫化技术具有对环境污染较小,效率高的特点,在今后的发展中主流利用加氢催化剂进行预硫化技术方面,器外预硫化代替器内预硫化必将成为一种趋势。

In this paper, it takes introduction on the two commonly used hydrogenation catalyst technolgy: in-situ presulfurization and ex-situpresulfiding, takes discussion on the action principle of catalyst presulfurization , besides, takes comparison of different vulcanizing agent, and alsothis paper takes analysis on the principle and characteristics of dry vulcanization and wet vulcanization.Dry vulcanization technology is applied tothe hydrogenation catalyst which has a high content of molecular sieve content, wet vulcanization technology is applied to the hydrogenation catalystwhich has a high degree for requirement.By comparing their own characteristics of in-situ presulfurization and ex-situ presulfiding,to analyze out thecharacteristics of ex-situ presulfiding technology that less pollution to the environment and high efficiency and for the aspecto of using hydrogenationcatalyst to take presulfurization technology is the main stream in the future development and that ex-situ presulfiding replaces in-situ presulfurizationinpresulfurization will certainly become a trend.