Kinetic understanding of the chemical synergy under LPDMETM conditions—once-through applications
Kinetic understanding of the chemical synergy under LPDMETM conditions—once-through applications
复制标题
DOI：
10.1016/s0009-2509(98)00343-1
复制
发表时间：
1999-07
影响因子：
4.7
通讯作者：
X. Peng;B. Toseland;P. Tijm
中科院分区：
文献类型：
--
作者：
X. Peng;B. Toseland;P. Tijm
将合成气转化为DME的一步法比合成气转化为甲醇的方法具有更高的转化率。这是因为在该过程中，甲醇合成、甲醇脱水和水煤气变换这三个同时发生的反应之间的协同作用。本文结合实验和模拟结果分析了各反应在协同反应中的作用。在使用市售催化剂体系的典型工业相关条件下，反应体系远离热力学平衡，并且反应速率是实现协同作用的有益效果的主要决定因素。此外，进料气体组成强烈影响工艺协同作用的潜在益处。这种理解的研究和工艺应用的影响进行了讨论。
The single-step process for conversion of syngas to DME gives higher conversion than the syngas-to-methanol process. This arises because of a synergy among the three simultaneous reactions, methanol synthesis, methanol dehydration and water gas shift, in the process. This paper analyzes the role each reaction plays in the synergy using both experimental and simulated results. Under typical industrially relevant conditions using a commercially available catalyst system, the reaction system is far away from the thermodynamic equilibrium, and the rates of the reactions are the prime determinant in realizing the beneficial effects of the synergy. Furthermore, feed gas composition strongly affects the potential benefit of the synergy on the process. The implications of this understanding for research and process applications are discussed.