熔融盐中晶格氧部分氧化甲烷制取合成气Ⅰ.原理和熔融盐体系分析  

Partial Oxidation of Methane to Syngas by Lattice Oxygen in Molten Salt Part Ⅰ.Principle and Selection of Molten System

作　　者：张翅远[1] 王华[1] 魏永刚[1] 敖先权[1] 

机构地区：[1]昆明理工大学,昆明650093

出　　处：《天然气化工—C1化学与化工》2007年第4期27-31,36,共6页Natural Gas Chemical Industry

基　　金：国家自然科学基金;宝钢科学基金联合资助项目(50574046;50164002);云南省自然科学基金资助项目(2004E0058Q);教育部高校博士学科点专项科研基金资助项目(20040674005)

摘　　要：熔融盐中用晶格氧部分氧化甲烷制取合成气是一种有利于合理利用反应热,避免热点、爆炸等问题和降低生产成本的合成气制取新方法。对其原理、试验装置进行了介绍。通过理论计算和TG、DTA、TPD、TPR等试验方法对熔融盐系统和氧载体进行了研究分析。结果表明:选用质量比为1∶1的Na2CO3和K2CO3作为熔融盐体系较适合,且反应温度在800℃时较适宜;理论计算NiO、CeO2、CO3O4、ZnO作为晶格氧氧载体部分氧化甲烷制取合成气所需控制条件不同;800℃的熔融盐体系中,NiO是适合的氧载体。Partial oxidation of methane （POM） to syngas by lattice oxygen in molten salt medium system is a novel route for syngas production, which utilizes reaction heat reasonably, avoiding hot spots and explosion in catalyst bed, and reducing cost. The principle and experimental setup were presented. The molten salt medium systems and oxygen supports were studied by theoretic analysis and TG, DAT, TPD and TPR. The results showed that the Na2CO3-K2CO3 molten salt medium system with 1：1 mass ratio of Na2CO3 to K2CO3 is suitable for this process,and the optimum reaction temperature is about 800℃. It was suggested that POM to syngas occurring on the different oxygen carriers, such as NiO, CeO2 ,CO304 and ZnO ,need different conditions by thermodynamics analysis and NiO is reasonable oxygen carrier for the molten salts system at 800℃.

关 键 词：熔融盐 晶格氧 甲烷 部分氧化 合成气 

分 类 号：O621[理学—有机化学]