费托合成催化剂SFT418的工业应用

INDUSTRIAL APPLICATION OF SFT418 CATALYST FOR FISCHER-TROPSCH SYNTHESIS

中国神华煤制油化工有限公司开发的新一代浆态床铁系费托合成反应催化剂SFT418首次应用于新建的180kt/a煤间接液化装置，生产出合格的费托合成轻质油、重质油、重质蜡和合成水。在装置运行过程中，在预处理单元活化催化剂，输送到合成单元，成功进行催化剂在线置换。装置第二次平稳连续运转1113h，Cs＋油品时空产率稳定在1．0t／（t·h），CO2的选择性低于20％（摩尔分数），CH。的选择性为1．5％～3．5％（摩尔分数），精制重质蜡的铁含量低于5μg／g，表明SFT418催化剂能够满足工业运转的要求。

A proprietary catalyst for slurry Fischer-Tropsch （F-T） synthesis was developed by China Shenhua Coal to Liquid and Chemical Company and it was applied firstly in a newly built indirect coal liquefaction unit with a capacity of producing 180 thousand tons oil per year. The whole operation was successful and qualified light oil, heavy oil, heavy wax and synthetic water were produced. The transfer of activated catalyst from pretreatment unit to F-T synthesis unit and the online substitution of fresh catalyst for deactivated catalyst were conducted successfully. During the second run, the plant kept stable operation for 1 113 h continuously, and the results showed that the performance of SFT418 catalyst could well meet the demands of industrial operation：the space-time yield of Cs^＋ reached 1.0 t/（t·h）, CO2 molar selectivity was less than 20%, CH4 molar selectivity was in the range of 1.50%--3.5% and the iron content of refined heavy wax was less than 5μg/g.