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On November 22, reporters learned from Jinan Metallurgical and Chemical Equipment Co., Ltd. that the \"Technology Development and Application of Energy Flow Network Integration Based on Efficient Recovery of Coking Waste Heat,\" developed jointly by this company, Tsinghua University, Wuhan University of Science and Technology, and Tangsteel Meijin (Tangshan) Coal Chemical Co., Ltd., passed the evaluation of scientific and technological achievements organized by the Chinese Society for Metals in Beijing. The expert panel of the evaluation committee unanimously agreed that this technological achievement is at an internationally advanced level, and recommended that it be further refined and improved to accelerate its widespread application. As environmental requirements for the coking industry become stricter, coal gas furnace operators are required to carry out desulfurization, denitration, and dust removal treatments on the exhaust gases emitted. This also leads to a significant increase in energy consumption during the production process, and there is still a long way to go in terms of developing methods to utilize the waste heat from the recovery column for tasks such as benzene removal, ammonia vaporization, and ammonium sulfate production in chemical processes. After more than 5 years of research and experimentation, the project team overcame the challenges that hindered the green development of the coking industry, and obtained 5 authorized patents (including 1 invention patent) as well as 4 software copyrights. Tang Zhigang, an associate professor at Tsinghua University, said that addressing issues such as insufficient utilization of waste heat in the existing coking industry, the coexistence of multiple energy sources, low energy efficiency during operation, and poor cleanliness, this project has independently developed a waste heat recovery technology for coker riser tubes that uses thermal oil as the sole heat transfer medium. The system integrates this recovered waste heat for processes such as ammonia distillation, benzene removal, and ammonium sulfate production, thereby creating a clean, low-carbon, and safe self-circulating energy flow network for coking based on efficient recovery of waste heat from coker riser tubes. This technology has been put into industrial use in Tangsteel Meijin Coal Chemical Company’s 7-meter coke ovens, which produce 2.9 million tons of coke per year. The waste gas heat recovery system using thermal oil in the rising pipes of these coke ovens operates stably, thereby creating the conditions necessary for making use of the waste heat generated in the chemical production process. It is estimated that after the project is operational, it will save approximately 4,000 Nm3/h of coke oven gas, reduce waste gas emissions by about 27,300 Nm3/h, and generate economic benefits of 49.4207 million yuan per year. After the implementation of the project, SO₂ emissions will be reduced by 28.9 tons per year, NOx emissions by 75.38 tons per year, and CO₂ emissions by 25,229 tons per year. Tang Zhigang pointed out that according to industry statistics from 2020, China’s coke production was approximately 470 million tons per year. If this technology is adopted across the country’s coking industry, it could generate economic benefits of 7.94 billion yuan per year. It would also enable the recovery of waste heat equivalent to approximately 3.24 million tons of standard coal per year, result in a reduction of about 27,600 tons of SO₂ emissions per year, about 24,100 tons of nitrogen oxide emissions per year, and about 8.5 million tons of CO₂ emissions per year. The economic and social benefits are significant.