Syngas production from coke oven gas by using an oxygen-permeable membrane reactor

Syngas from coke oven gas was investigated in an oxygen-permeable membrane BaCo0.7Fe0.2 Nb0.1O3-δ (BCFNO) reactor. It was found that the membrane itself has poor catalytic activity methane. After the catalyst was packed on the membrane surface, both methane conversion and oxygen permeation flux were greatly improved by the synergetic effect between the membrane and catalyst, at 875°C, 87.0% of methane conversion, 78.3% of H2 selectivity, 105.6% of CO selectivity and as high as 15.8ml/(cm2·min) of oxygen permeation flux were obtained. The react pathway of CH4 in the coke oven gas in the membrane reactor is as follows: firstly, H2 in the coke oven gas reacts with the O2, and generate H2O, then CH4 reforms with the H2O to produce H2 and CO. The membrane reactor exhibited not only good activity but also chemical stability resistance to hydrogen-enriched COG atmosphere.