매립지가스(LFG)로부터 합성가스 제조를 위한 개질반응 연구 = A Study on Reforming Reaction for Preparation of Synthesis Gas from Land-Fill Gas

다국어 초록 (Multilingual Abstract)

LFG (Land-Fill Gas) includes components of CH4, CO2, O2, N2, and water. The preparation of synthesisgas from LFG as a DME (Dimethyl Ether) feedstock was studied by methane reforming of CO2, O2 and steamover NiO-MgO-CeO2/Al2O3 catalyst. Our experiments were performed to investigate the effects of methane conversionand syngas ratio on the amount of LFG components over NiO-MgO-CeO2/Al2O3 catalyst. Results were obtainedthrough the activity reaction experiments at the temperature of 900°C and GHSV of 4,000. The results were asfollowing; it has generally shown that methane conversion rate increased with the increase of oxygen and carbondioxide amounts. Highly methane conversion of 92~93% and syngas ratio of approximately 1.0 were obtainedin the feed of gas composition flow-rate of 243ml/min of CH4, 241ml/min of CO2, 195ml/min of O2, 48ml/minof N2, and 360ml/min of water, respectively, under reactor pressure of 15 bar for 50 hrs of reaction time. Also,it was shown that catalyst deactivation by coke formation was reduced by excessively adding oxygen and steamas an oxidizer of the methane reforming.

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