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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 innovative 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 from coal. Two pilot-scale devices have successfully produced acetylene from coal in a clean and efficient manner, and both are currently operating well.
Traditionally, acetylene is produced using the calcium carbide method, which relies on limestone and coke. However, this process generates large amounts of wastewater and calcium carbide slag, requiring extensive environmental controls. In contrast, the new coal-based acetylene technology uses a plasma torch to create high-temperature plasma, which reacts with pulverized coal to produce an acetylene-containing gas mixture. After separation and concentration, high-quality acetylene is obtained. This method is not only more cost-effective but also significantly reduces environmental impact, making it a promising alternative in today’s environmentally conscious world.
With global attention increasingly focused on resource sustainability and environmental protection, coal-to-acetylene technology has become a key area of international development. Countries like South Africa have already achieved advanced levels in this field, while China still lags behind, with only a few companies involved. As a result, many domestic firms are actively seeking international partnerships to advance their capabilities.
Xinjiang Tianye Group originally operated a calcium carbide plant in Shihezi, Xinjiang, producing acetylene through the traditional method. However, the rising costs of raw materials and growing environmental concerns prompted the company to explore a more sustainable approach. After extensive discussions, they partnered with leading institutions, including Russia's Academy of Sciences, which specializes in plasma technology, and Chinese research groups with expertise in this area.
Currently, the research team has built two of the most powerful coal pyrolysis acetylene test units in the world, located in Hefei. These systems can operate at up to 2 MW, with the plasma torch reaching 1.28 MW. The carbon conversion rate has reached 20%, enabling the production of approximately 1,600 tons of acetylene in a successful pilot test. Since this project involves fundamental industrial research, the findings can be directly applied to large-scale production, potentially revolutionizing the use of clean coal and industries reliant on acetylene as a raw material.
On February 12, scientists from the Chinese Academy of Sciences visited Xinjiang Tianye Group to provide technical training to employees, ensuring the smooth implementation of the new technology in future production processes.