Performance of a low temperature reactive sulfur-tolerant WGS catalyst using industrial coal gasification gas feed

We have examined the reaction characteristics of the shift reaction for Ni/Mo/TiO2 catalyst (Ni/Mo/Ti) which is a sulfur-tolerant water gas shift catalyst (sour shift catalyst). We used a bench-scale apparatus and the actual coal gasification gas (actual gas) which included COS and HCN as the competing reaction materials for the shift reaction. From the catalyst inlet temperature dependence of the shift reaction at the H2O/CO ratio of 1.2 mol/mol, it appeared that the reaction starting temperature was less than 200 degrees C. In addition, for Co/Mo/Al2O3 catalyst (Co/Mo/Al) as a comparison catalyst, gas hour space velocities (GHSVs) to reach chemical equilibrium was calculated by static characterization analysis using E-a and A obtained from the actual experiment for the catalyst inlet temperature of 200 degrees C and the H2O/CO ratio of 1.2 mol/mol. As a result, we confirmed that GHSV of Ni/Mo/Ti was 5 times more than that of Co/Mo/Al, that is, the catalyst quantity of Ni/Mo/Ti can be decreased to 1/5 that of Co/Mo/Al for the above conditions. Furthermore, we confirmed that COS and HCN were sufficiently reacted on Ni/Mo/Ti. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.