Combined coal gasification and methane reforming for production of syngas in a fluidized-bed reactor

The concept of combining coal gasification and methane reforming for syngas production in a fluidized-bed reactor, as a means for utilization of both coal and coal-bed methane, was proposed and evaluated experimentally. Preliminary experiments were performed in a laboratory-scale fluidized-bed reactor operating at similar to 1000 degrees C, using two Chinese coals: a bituminous coal (Coal A) and an anthracite (Coal B). To demonstrate combined coal gasification and methane reforming, the reactor was fed with 1.5-2.5 kg/h coal, 0.4-0.5 Nm(3)/h methane, 1.45-2.0 Nm(3)/h oxygen, 0.4 Nm3/h air, and 2.0-2.4 kg/h steam. Up to 90% methane conversion and 70% carbon conversion were achieved, and the resulting syngas had a composition of 35%-39% H-2, 31%-34% CO, and 20%-22% CO2, balanced by N-2. For comparison, the results of the gasification of Coal A and Coal B without added methane were also reported. These results proved the feasibility of such an integrated coal gasification and methane reforming process. Further kinetic studies and process development opportunities were also identified.