Using the technology and thereof catalysts of SWCHEM, the first commercial COG methantion to SNG plant with production capacity of 240 million Nm3 per year has been put into operation successfully recently. The owner of the plant is Shanxi Guoxin Zhengtai New Energy Co., Ltd. The product gas meets the first class standard on nature gas of national standard GB17820-2012. It is the first commercial COG to SNG plant, by which reduction of 200kt CO2 emission and increase of 100 million cubic meters can be realized every year. It has opened up a new path for high polluting industrial waster gas to produce clean energy and promote the technical progress & clean production of coking industry.
As told by Mr. Tang Yaozu, the director of Shanxi Guoxin Zhengtai New Energy Co., Ltd., “this project is an essential part of Strategy of Gas for Shanxi, with total investment RMB 300 million. The technology provider is SWCHEM. Based on SWCHEM’ s purification and methanation processes, COG, after removing benzene, naphthalene and sulfide, is compressed and heat-exchanged, then its components CO、CO2 and H2 react to generate methane under methanation catalysts. Still then H2 is separated from product gas and the SNG with methane concentration above 88% is obtained and 0 emission is achieved. The plant was put to operation successfully at 10th July, 2014 after one time commission. Up till now, it has been running smoothly for 5 days and the quality of product gas meets the national standards. Via this plant, emission can be reduced every year including 240 million cubic meters COG, 200 k tons CO2 , 120 tons SO2 and 10 tons dust. The annual production capacity is 100 million cubic meters SNG, and 120 k tons of standard coal can be saved. Its annual sale income can be 250 million, of which 60 million is profit.
It is said that SWCHEM undertook a National Major Achievement Commercialization Project and developed methanation catalyst and thereof process for COG to SNG successfully after completing lab research, pilot research step and PDP design step by step. Concerning this technology, 10 pieces of patents was applied and 5 pieces was been granted. In May 2010, the technological achievement passed the appraisal organized by Science & Technology Department of Sichuan Province. Its technical indexes were better than those of her counterparts home and abroad. The economic & social benefit, energy saving and emission reduction of commercializing this technology is eminent. Until now, SWCHEM has licensed more than 10 enterprise to commercialize this technology. In addition, feasibility study report on this technology has been provided to more than 30 enterprises.
Experts said “via commercializing this technology, clean production of coking industry could be released and at the same time the added value of COG and Coal tar could be enhanced, which would be meaningful to upgrade traditional coking industry and would be also a demonstration & promoter for COG comprehensive use all over the country.”
