摘要
将小试开发成功的Ｋ－Ｆｅ－ＭｎＯ／Ｓｉｌｉｃａｌｉｔｅ－２催化剂进行了１．８Ｌ的单管扩大试验，采用强制盐浴循环加热及导热，可有效控制ＣＯ加氢的强放热效应，使催化剂床层温差控制在２０℃以内，取得很好的效果，成功地进行了合成气制低碳烯烃的单管扩大试验，Ｋ－Ｆｅ－ＭｎＯ／Ｓｉｌｉｃａｌｉｔｅ－２催化剂的ＣＯ加氢制低碳烯烃性能可达到并超过小试结果，表明控制催化剂床层温差是确保合成气直接制取低碳烯烃单管扩大试验的关键。此外，根据催化剂床层高温区轴向位移的速度可推测催化剂的单程寿命。
he differential thermal and thermo gravimetric analyses of K Fe MnO/silicalite 2 catalyst carbon deposit and carbon burning show that two types of carbon deposit may be formed on the catalyst surface during CO hydrogenation reaction, in which type I carbon deposit is advantagous to increase light olefins selectivity in CO hydrogenation, but type Ⅱ carbon deposit is not. The analytic results also show that K Fe MnO/silicalite 2 catalyst can be restored to its fresh state catalytic properties after regeneration. In the single tube scaleup tests, type Ⅰ and Ⅱ carbon deposits can easily be formed on the catalyst surface at the high temperature zone of the reactor inlet, and only type I carbon deposit is formed on the catalyst surface at the constant temperature zone, which will cause the displacement of the highest temperature zone in catalyst bed.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
1996年第3期30-33,共4页
Natural Gas Chemical Industry
基金
国家"八五"重点科技攻关课题
关键词
合成气
烯烃
催化剂
单管扩大试验
syngas, light olefins, CO hydrogenation, differential thermal and thermo gravimetric analyses
