CN

刘永卓

Education Level:博士研究生

Degree:工学博士

Discipline:Chemical Engineering

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高压热天平内煤催化气化动力学研究

Release time:2021-03-15 Hits:

Key Words:热重分析;;催化剂;;气化;;甲烷化;;动力学

Abstract:为了深入系统的理解在高压下一步法煤催化制天然气工艺过程中的动力学机理,本文以水蒸汽为气化介质,通过高压热天平中的热重分析,对神木烟煤在不同催化剂下的气化并甲烷化特性进行了研究,分析了其气化特性及催化气化反应的动力学,分析结果表明,K15/Fe10/Ca5催化剂使煤转化成合成气的效率比较高,其次是K15/Fe10和K15/Fe10/Mn5,而求得其活化能分别为39.06,36.58和52.87kJ/mol,即反应速率最高的是K15/Fe10,其次是K15/Fe10/Ca5和K15/Fe10/Mn5。说明催化剂中加入碱土金属钙的氧化物,可提高气化气生成速度,而选择加入锰元素需慎重。该研究为一步法煤制天然气工艺提供了理论基础。

Volume:v.30;No.117

Issue:03

Translation or Not:no

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