“Progress has been made in the research and development sowie engineering demonstration of low-temperature heat-exchange-based synthesis of natural gas and CO2 reduction technologies using coke oven gas

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“Progress has been made in the research and development sowie engineering demonstration of low-temperature heat exchange-based synthesis of natural gas from coke oven gas and methods for reducing CO₂ emissions. Author/Source: Date: 2016-09-02 Clicks: 52. On August 12, a trial operation of the project as well as a technical exchange session on the progress achieved were held in Guxian County, Linfen, under the sponsorship of Shanxi Guoxin New Energy Development Group Co., Ltd., in connection with the 2014 key scientific and technological project in Shanxi Province focused on coal-based technologies. The experts present at the pilot plant site examined the process flow and operating conditions, as well as reviewed the operation records. After thorough discussion and exchange, they concluded that the pilot plant was operating smoothly and that the process was reasonable. At the same time, reasonable suggestions were put forward for optimizing the reactor structure to enhance the safety and reliability of the device, as well as for expanding the scope of related experiments; the innovative achievements obtained in this project were highly praised and recognized. The core unit of the project, designed jointly by the Research Institute of Shanxi Guoxin New Energy Development Group and Southwest Chemical Engineering Research and Design Institute Co., Ltd., namely the heat-exchange methanation reactor and system, underwent trial operation on August 3. Tests showed that the CO conversion rate was ≥99%, the CO2 conversion rate was ≥97%, and the methanation selectivity was ≥99%; all these indicators met advanced levels in China. Through a series of technologies such as nickel-based methanation catalysts resistant to coking at low and medium temperatures and a new type of heat-exchange methanation reactor, this project achieves efficient conversion of coke oven gas. Compared with traditional processes, it reduces equipment investment by 30%~50% and electricity consumption by 10%~15%, further improves the catalytic efficiency of the catalysts, and simplifies the equipment and process flow. The successful trial operation of this pilot plant is of great significance for improving the comprehensive utilization efficiency of coke oven gas in Shanxi Province and promoting the clean development and utilization of coal.