廉价铁基催化剂F-T合成反应性能初探  

A PRELIMINARY STUDY ON PERFORMANCE OF INEXPENSIVE IRON-BASED CATALYSTS FOR FISCHER-TROPSCH SYNTHESIS

作　　者：田磊[1] 吴宝山[1] 杨勇[1] 白亮[1] 张志新[1] 相宏伟[1] 李永旺[1] 刘源[2] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西太原030001 [2]内蒙古工业大学,内蒙古呼和浩特010062

出　　处：《燃料化学学报》2003年第1期12-16,共5页Journal of Fuel Chemistry and Technology

基　　金：国家科技部863项目(2001AA523010);中科院知识创新重大项目(KGCX1 SW 02)

摘　　要：以四个廉价的FeSO4工业原料为铁源,采用连续共沉淀法制得含铁浆料,再用喷雾干燥法制得微米级球状Fe Cu K SiO2催化剂。在H2 CO=2、526K、2 0MPa、2000h-1条件下于固定床反应器上考察了这四个铁基催化剂的F T合成反应活性、选择性和稳定性,结果表明在240h运行时间内,该四个催化剂均表现出良好的反应活性和选择性,而稳定性则有不同程度的下降,其中2#催化剂性能相对较优,初始CO转化率为77 89%,经历反应诱导期40h时达到89 58%,其后CO转化率逐渐下降,失活速率为1 33% d;在整个运行期间CH4选择性维持在4%左右,C+5选择性在80%左右。The micrometer scale spherical FeCuKSiO2 catalysts were prepared by means of spray drying technology for precipitate slurry, which was obtained by a continuous precipitation method using four inexpensive industrial byproducts, FeSO4 as raw material The reactivity, selectivity and stability of four catalysts for FischerTropsch synthesis were tested in a fixedbed reactor at 526?K, 20?MPa and gas hourly space velocity of 2?000?h-1 with syngas of H2/CO=2 during the period of 240?h The results indicated that four catalysts showed higher CO conversion and C+5 product selectivity, the CO conversion gradually decreased with different rates In terms of the CO conversion and stability, catalyst 2# was the best among the catalysts studied Its initial CO conversion was 7789%, and passed through a maximum of 8958% after an inductive period for about 40 hour, and then gradually decreased with a deactivation rate of 133%/d The selectivity of CH4 and C+5 kept about 4% and 80%, respectively, in the whole run period for catalyst 2#

关 键 词：反应性能 F-T合成 FESO4 铁基催化剂 喷雾干燥 煤 间接液化 

分 类 号：TQ529.2[化学工程—煤化学工程]