Experimental Study of Coal Gasification Coupling with Natural Gas Autothermal Re-Forming for Synthesis Gas Production

Abstract

A new process, coal gasification coupling with natural gas autothermal re-forming for synthesis gas production, is introduced in this paper. Following the technological principle of this process, the H 2 /CO ratio of crude synthesis gas can been controlled in a range of 1.0−2.0. Using a moving bed as the reactor and coke as the raw material in the preliminary study of hot simulative experiments, the effects of blowing parameters H 2 O/CH 4 /O 2 on the temperature in the flame zone and the H 2 /CO ratio of synthesis gas were investigated. The results of preliminary experiments showed that for the produced crude synthesis gas, with a H 2 /CO ratio in a range of 1.0−2.0, the contents of the active compounds (H 2, CO) were more than 90% and the residual methane was less than 2%. The process went smoothly by keeping the temperature of the reactor above 1000 °C and adjusting the blowing parameters H 2 O/CH 4 /O 2, with natural gas and oxygen being blown into the reactor at the same position. The preliminary results presented demonstrate that coal gasification coupling with natural gas autothermal re-forming process has the potential for commercial synthesis gas production.