Chen Gaofei
PhD, Chinese Academy of Sciences, China
Title: Biogas recovery process with the products of both LNG and liquid carbon dioxide
Biography
Biography: Chen Gaofei
Abstract
Methane and carbon dioxide are the essential components in Biogas. The prevailing biogas recovery technology is purification and producing natural gas for pipeline transportation or further road transportation. It means all other components including carbon dioxide would be removed from biogas first. Related processes, especially the removal of carbon dioxide, would increase the cost, which is vital for the small-scale biogas recovery. To make the recovery of small-scale biogas both inexpensive and practicable, authors of this work developed a new process, which use refrigeration technology combined with distillation process to make two products, Liquefied Natural Gas (LNG) and liquid carbon dioxide. A simulation process was built to analyze the power comsuption and certain economic evaluation was made. Comparison with traditional recovery process were also made for both energy efficiency and profitability. Application of the new process integrated purification, cooling and rectification is an excellent recovery option for scattered small-scale biogas resource.