Effects of Several Metals Species on Steam Gasification Behavior of Lignite from Inner Mongolia

Abstract:

The purpose of this study is to investigate the catalytic effects of different metals in Shengli lignite on the char reactivity. The pyrolysis of Shengli lignite and various metal catalyst loaded coal was investigated in a small fixed-bed reactor, and the gasification activity with steam for different chars was compared as well. The results show that Fe, Ni, Ca and K could effectively lowering the gasification temperature, enhancing the gasification reactivity of SL char. Alkali (K) and alkaline earth (Ca) could be feasibly used as catalysis for the catalytic steam gasification at relatively low temperatures (550~700°C) to produce gases with high H₂ (63.2~63.8 v%) and low CO (below 0.9%), and promoting the carbon-water reaction, the water-gas shift reaction to some extent.

• Periodical: Advanced Materials Research (Volumes 953-954)
• Pages: 1176-1179
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.953-954.1176
• Online since: June 2014
• Authors: Yang Li, Yan Peng Ban, Quan Sheng Liu*, Meng Zhang, Ke Duan Zhi, Yang Liu, Lei Wang
• Keywords: Catalytic Gasification, Lignite Char, Metal Catalyst

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