en.Wedoany.com Reported - A team led by Professor Yang Guidong from Xi'an Jiaotong University, in collaboration with Guoneng Yulin Chemical Co., Ltd., has recently completed the pilot test of the world's first hundred-ton integrated industrial demonstration project for photoelectrocatalytic ammonia synthesis in Yulin. This project was jointly initiated by the Shaanxi Provincial Department of Science and Technology and the Yulin Municipal Science and Technology Bureau.
Ammonia synthesis is a fundamental raw material for the modern chemical and agricultural fertilizer industries. The traditional Haber-Bosch process has long relied on high-temperature and high-pressure reaction conditions, resulting in high energy consumption, high water usage, and high carbon emission intensity, posing a key challenge to the green development of the coal chemical industry. This project employs independently developed key core technologies for low-energy, low-carbon-emission air-water photoelectrocatalytic ammonia synthesis, achieving a breakthrough in the ammonia synthesis production process.
During the project implementation, the R&D team completed full-chain technological breakthroughs, overcoming core design challenges for key equipment in the hundred-ton demonstration unit, and successfully completed the overall unit construction, system commissioning, and continuous stable operation. Currently, the cumulative operating time of this pilot demonstration unit has exceeded 1,000 hours, with stable equipment conditions, controllable process parameters, and complete and reliable pilot data, verifying the stability and feasibility of the new technology.
According to calculations and comparisons, using the industry average indicators of the traditional Haber-Bosch process as a benchmark, the new process reduces energy consumption per ton of ammonia to 1.78×10⁷ kJ, with water consumption per ton of ammonia only 2.12 tons, significantly improving resource utilization efficiency. Each ton of ammonia synthesized can achieve a carbon dioxide emission reduction of 3.1 tons. The new process can reduce carbon emissions from the production source, achieving significant results in energy saving, water conservation, carbon reduction, and efficiency improvement, aligning with the requirements of the "dual carbon" development strategy.
In terms of technology transfer and industrialization, leveraging the mature experience from the hundred-ton pilot test, this project has developed a complete ten-thousand-ton solar-driven air-water photoelectrocatalytic ammonia synthesis process package, bridging the key gap from laboratory technology to industrial-scale production, and is now ready for large-scale promotion and application.
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