Xebec Adsorption Inc. announced that it has commenced operation of its first commercial landfill gas to CNG upgrading system in the City of Anshan, North Eastern China. This landfill gas upgrading system is based on Xebec’s fast cycle pressure swing adsorption (PSA) technology, assembled and integrated at Xebec’s Shanghai facility according to Chinese code and certification requirements.
The upgrading system is operating within a variable pressure envelope of 90 to 120 psig and dynamic feed flow parameters between 500 and 1300 m3/h. In addition, Xebec is deploying a kinetic adsorption process to continuously remove varying amounts of nitrogen (N2) and oxygen (O2), while maintaining corresponding recovery rates of 83 to 91%, and product gas purity levels of 94 to 98.6% methane (CH4). The high quality product gas will be used to power natural gas taxis that operate in Anshan.
“Xebec’s upgrading system performance is excellent, delivering gas quantities and qualities which are higher and purer than we expected. This allows us to sell more high quality gas to our customers, making this investment very attractive for us,” said Luo Yong, Chairman of Beijing Golden Green Environmental Engineering & Technology Co. Ltd., the owner of the project.
“It has been extremely important for Xebec to establish this first reference operation in the landfill gas upgrading space. China is committed to significantly reduce greenhouse gas emissions over the coming decades and needs technologies like Xebec’s that can provide tangible reductions in GHG emissions. Upgraded landfill gas used as transportation fuel has the lowest GHG emission profile of any transportation fuel available today,” said Peter Cheng, Xebec Adsorption General Manager in Shanghai.