Recent Advances in Industrial Sulfur Tolerant Water Gas Shift Catalysts for Syngas Hydrogen Enrichment: Application of Lean (Low) Steam/Gas Ratio

Catalysts

Qiuyun Zong¹  Jin Zhang¹  Tiancun Xiao²  Hamid Almegren³  Feng Wei⁴  Jinsen Gao⁵  Liang Zhao⁵  Xiaohan Zhang⁵  Zhen Zhao⁵  Bonan Liu⁵  Zhijie Wu⁵ 

[1] Industrial Engineering Laboratory of Sulfur Tolerant Water Gas Shift Catalyst Subjected to China Petroleum and Chemical Industry Federation (CPCIF), Qingdao Lianxin Catalyst Company, Yunxi Road, Jiaozhou 266300, Shandong Province, China;KACST-Oxford Petrochemical Research Centre, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, UK;Materials Research Institute, KACST, PO Box 6086, Riyadh 11442, Saudi Arabia;State Key Laboratory of Advanced Materials for Smart Sensing, General Research Institute for Nonferrous Metals, 11 Xingkedong Street, Huairou District, Beijing 101402, China;State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), 18 Fuxue Road, Changping District, Beijing 102249, China;

关键词: Sulfur tolerant water gas shift catalyst;    steam/gas ratio;    Mo–Co/alkali/Al₂O₃ catalyst;    catalyst deactivation;    syngas;    H₂ production;   

DOI  :  10.3390/catal9090772

来源: DOAJ

【 摘 要 】

A novel sulfur tolerant water gas shift (SWGS) catalyst has been developed for the applications under lean (low) steam/gas ratio conditions, which has been extensively used for H₂/CO adjustment of syngas and H₂ enrichment in the world since 2000s with safer operation and lower steam consumption. Technology design and catalyst performances under different lean steam/gas conditions were comprehensively reported. Industrial data were collected from several large scale running plants with a variety of served catalysts characterized and precisely re-examined in the laboratory. It is shown that the developed Mo−Co/alkali/Al₂O₃ SWGS catalyst can operate very steadily even with the steam/gas ratio as low as 0.2−0.3, and the main deactivation factors are accidental caking, sintering, as well as poisoning impurities, such as As or Cl. The adoption of lean steam/gas SWGS catalyst can significantly improve the plant efficiency & safety and remarkably reduce the actual steam consumption for H₂ production, which can decrease CO₂ emission correspondingly. The work helps to evaluate how specially designed SWGS catalysts performed under applied lean steam/gas conditions, providing important references for researchers and industry.

【 授权许可】

Unknown