The energy-saving technology of methanol negative-pressure multi-effect coupled distillation passed the scientific and technological achievement appraisal by the China Nitrogen Fertilizer Industry Association

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The energy-saving technology of methanol negative-pressure multi-effect coupled distillation was evaluated as a scientific and technological achievement by the China Nitrogen Fertilizer Industry Association. Beijing, May 22, 2025, 09:47 – On May 20, 2025, the China Nitrogen Fertilizer Industry Association organized experts to assess the “methanol negative-pressure multi-effect coupled distillation energy-saving technology” developed and successfully put into industrial use by Henan Xinlianxin Chemical Industry Group Co., Ltd. and Tianjin Aozhan Xingda Chemical Technology Co., Ltd. The evaluation panel unanimously agreed to approve this technology, considering it to be at a leading level in China. https://mmecoa.qpic.cn/sz_mmecoa_png/CzKlc2td9q1Lnoc5moA5KsxjmsiadIpR1cYbFpNYzM1mzL76HvhBo8dRsUwwnUplhQzbScrLKPwfXHlHAO4ibXKw/640?wx_fmt=png&watermark=1 Gu Zongqin, president of the China Nitrogen Fertilizer Industry Association, served as the head of the evaluation panel. The panel was composed of various experienced industry experts, including Li Xiaodong, former chief expert at China National Coal Energy Group Co., Ltd. and general manager of its coal chemical business unit; Yu Tao, chairman of Yanhua Chemical Co., Ltd. under Henan Jinkai Group; Shan Xiuli, former chief engineer and top expert at Hualu Engineering Technology Co., Ltd.; Duan Yueqin, a process expert from Saiding Engineering Co., Ltd.; Zhang Shuihe, general manager of Henan Energy and Chemical Group’s Chemical New Materials Company; and Luo Junjie, general manager of Hubei Jinkong Gas Co., Ltd. under Jineng Holding Equipment Manufacturing Group. The appraisal meeting was chaired by Wang Liqing, Secretary-General of the China Nitrogen Fertilizer Industry Association. Leaders such as Gu Zhaohui, Chief Engineer of Henan Xinlianxin Chemical Industry Group Co., Ltd., and Zhang Bing, Chairman of Tianjin Aozhan Xingda Chemical Technology Co., Ltd., along with relevant technical officials, attended the meeting. https://mmecoa.qpic.cn/sz_mmecoa_png/CzKlc2td9q1Lnoc5moA5KsxjmsiadIpR1gAvHMlZ1BEJVcJaTHuqh7Oj4FSEfIPshRA0SBQJoqgibYbYrEPzd54A/640?wx_fmt=png&watermark=1 During the evaluation session, the expert panel inspected the installation site and reviewed the technical reports, work reports, technical-economic analysis reports, and novelty search reports submitted by the entities responsible for completing the project, as well as the application report submitted by the entity that utilizes this technology, namely Henan Xinlianxin Chemical Industry Group Co., Ltd. Following inquiries and discussions, it was unanimously agreed that the \"Methanol Negative Pressure Multi-effect Coupled Distillation Energy-saving Technology\" meets the criteria for evaluation as a scientific and technological achievement. It is considered that this technology introduces a negative pressure column into methanol distillation units for the first time; through a \"5-columns 3+3 effects\" thermal coupling process, it enables hierarchical utilization of energy, improves product quality, reduces overall energy consumption, and offers significant economic benefits, reaching a level leading in China.