Process Technologies of Reforming, Upgrading and Purification of Anaerobic Digestion Gas for Fuel Cells

Abstract >> Biogas is a renewable fuel from anaerobic digestion of organic matters such as sewage sludge, manureand food waste. Raw biogas consists mainly of methane, carbon dioxide, hydrogen sulfide, and water. Biogas mayalso contain other impurities such as siloxanes, halogenated hydrocarbons, aromatic hydrocarbons. Efficient powertechnologies such as fuel cell demand ultra-low concentration of containments in the biogas feed, imposing stringentrequirements on fuel purification technology. Biogas is upgraded from pressure swing adsorption after biogas purification process which consists of water, H 2 S and siloxane removal. A polymer electrolyte membrane fuel cellpower plant is designed to operate on reformate produced from upgraded biogas by steam reformer. Key words :혐기성 소화가스(Anaerobic digestion gas), 정제(Purification), 고질화(Upgrading), 메탄개질(MethaneReformimg), 연료전지(Fuel Cell) † Corresponding author : bioleegas@naver.com Received: 2016.3.17 in revised form: 2016.4.12 Accepted: 2016.4.30Copyright ⓒ 2016 KHNES