铝土矿载持无铬CO高温变换催化剂的研制

Preparation of carbon monoxide HTS catalyst by impregnation on bauxite

采用简易的热转型工艺 ,将天然铝矿石制成活性铝土石作为催化剂载体 ,进行无废水外排、浸渍负载型无铬CO高变催化剂的研制 ,参照中华人民共和国化工行业标准ZB/TG74 0 0 1 89对其进行还原和测试。测试表明 ,该催化剂 32 5℃时常压初活性 (CO转化率 )高达 88%。在模拟工业使用条件的低压测试中 ,35 0℃的低压活性也达 5 0 %以上 ,具有良好的初活性。在汽 /气约 0 .5时活性最高 ,低汽 /气特性明显。 10 0h寿命试验 ,催化活性无明显变化。

Chromium free CO high temperature shift (HTS) catalyst was prepared by impregnation on bauxite support with zero waste water discharge. The catalyst was reduced and tested according to China Standard ZB/?TG74001 89. Test results showed that initial activity (CO conversion) of 88% can be attained at 325℃ and ambient pressure. In a test under simulated commercial condition at 0.8MPa and 350℃, conversion of over 50% was obtained over the catalyst, with excellenct initial activity. Optimum activity is obtained at steam/gas ratio of 0.5, indicating that the catalyst is applicable to low steam/gas condition.No activity deterioration was observed in a 100 hour service life test.