Study on nitrogen removing process for marsh gas from landfill site
CHEN Yi-fan1,2, WEI Ya-nan1, TANG Gong-bin1,2, HU Xiong-feng1,2, KANG Ke1, HUANG Fu-chuan1,2
1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; 2. Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Nanning 530004, China
Abstract: In this paper, a new solvent absorption method is proposed to remove nitrogen from the high nitrogen containing marsh gas in landfill sites by using propane (C3H8) as absorbent. Based on analyzing the characteristics of conventional purification process for marsh gas, Aspen Plus simulation software is used to analyze the absorb performances of propane against methane, nitrogen and carbon dioxide respectively. Furthermore, Aspen Plus is used to simulate the removal of nitrogen from marsh gas by using propane as absorbent, and a nitrogen removal process is designed. The simulation tests disclose that the volumetric concentration of methane can reach 95% after removing nitrogen from marsh gas by using this process, which can greatly improve the calorific value of marsh gas.
陈一帆, 魏雅男, 唐弓斌, 胡雄风, 康克, 黄福川. 垃圾填埋场沼气脱氮净化工艺的研究[J]. 现代化工, 2017, 37(11): 179-182,184.
CHEN Yi-fan, WEI Ya-nan, TANG Gong-bin, HU Xiong-feng, KANG Ke, HUANG Fu-chuan. Study on nitrogen removing process for marsh gas from landfill site. Modern Chemical Industry, 2017, 37(11): 179-182,184.