钴钼基水煤气变换催化剂及其催化反应工艺

Co-Mo-Based Catalyst and Catalytic Reaction Process for Water-Gas Shift

介绍了国内外CO变换催化剂的发展及其在不同变换工艺中的应用,阐述了Co-M o基催化剂的催化机理与硫化方法。通过综合分析中温变换、中温变换串联低温变换、中温变换串联两段低温变换和全程低温变换4种代表性的工艺流程,提出了高效节能型的全程低温变换工艺将是变换技术的发展方向,开发适应全程低温变换工艺的高活性和高稳定性的Co-M o基变换催化剂及其预硫化技术是今后的主要研究目标。

The development background, present situation and developing vista for CO shift catalysts, and the process technologies for water-gas shift reaction both at home and abroad were introduced. The mechanism of the water-gas shift reaction and the characteristic of the catalyst sulfuration methods were also expounded. By comparing the industrial applications of the catalysts in four cross-sectional shift processes, i. e. the high temperature shift, the high-low temperature shift, the high-low-low temperature shift and the total low temperature shift, it can be imagined that to investigate and develop the Co-Mo-based shift catalysts with high activity and stability, which suit the total low-temperature shift process with energy saving, and the preparation procedures for the catalyst pre-sulfuration will be the developing direction from now on.