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On February 17, a reporter learned from the Xinjiang Tianye Group that the company has made significant progress in developing a plasma cracking coal acetylene technology. This project, developed in collaboration with the Russian Institute of New Siberia Branch, the Chinese Academy of Sciences' Institute of Plasma, and Fudan University, marks a major breakthrough in the direct extraction of acetylene gas from coal. Two pilot devices have successfully produced acetylene in a clean and efficient manner, and both are currently operating well.
Currently, acetylene is mainly produced through the calcium carbide method using limestone and coke, which generates large amounts of wastewater and slag, requiring costly environmental treatments. In contrast, the new coal-based acetylene technology uses a plasma torch to create high-temperature plasma, which reacts with pulverized coal to generate an acetylene-rich gas mixture. After separation and concentration, high-quality acetylene can be obtained. This method is not only cost-effective but also environmentally friendly, producing significantly less pollution. As global concerns over environmental and resource issues grow, coal-to-acetylene has become a key area of international development. Countries like South Africa have already achieved world-leading technologies in this field, while China still has limited companies involved. Therefore, many domestic firms are actively seeking international partnerships to advance this technology.
Xinjiang Tianye Group originally operated a calcium carbide plant in Shihezi, Xinjiang, using the traditional method to produce acetylene. However, the high cost of coke and increasing environmental pressures prompted the company to explore a more sustainable alternative. After extensive research and negotiations, they partnered with the Russian Academy of Sciences, known for its expertise in plasma technology, as well as the Chinese Academy of Sciences and Fudan University, which have relevant research experience.
It is reported that the research team has built two of the most powerful coal pyrolysis acetylene test units in the world, located in Hefei, with a maximum power of 2 MW. During testing, the plasma torch reached up to 1.28 megawatts, achieving a carbon conversion rate of 20% and producing 1,600 tons of acetylene. The project recently completed a successful pilot test. Since this initiative involves fundamental research in industrial technology, the findings can be directly applied to large-scale production, potentially transforming the use of clean coal and industries reliant on acetylene as a raw material.
On February 12, researchers from the Chinese Academy of Sciences visited Xinjiang Tianye Group to conduct technical training for employees, aiming to accelerate the implementation of this innovative technology in real-world production settings.