NEWAY(SH:603699) Zhong Guo Hua Gong Bao·2025-06-16 02:14Core Viewpoint - The methanol negative pressure multi-effect coupling distillation energy-saving technology developed by Henan Xinlianxin Chemical Industry Group Co., Ltd. and Tianjin Aozhan Xingda Chemical Technology Co., Ltd. has passed the scientific and technological achievement appraisal organized by the China Nitrogen Fertilizer Industry Association, indicating a significant advancement in methanol distillation efficiency and product quality [1][2]. Group 1: Technology Overview - The new technology introduces a negative pressure tower in the methanol distillation unit, utilizing a "5 towers 3+3 effect" heat coupling process to achieve energy gradient utilization, significantly reducing steam consumption from 1.05 tons/ton of methanol to 0.65 tons/ton [1]. - The purity of the refined methanol is enhanced, with ethanol content reduced to less than 10 ppm [1]. Group 2: Industry Impact - The technology addresses the high energy consumption bottleneck of traditional multi-tower distillation and is adaptable for retrofitting existing facilities, providing a new pathway for the green upgrade of the methanol industry [2]. - The achievement marks the official start of the era of high-purity methanol distillation with steam consumption at 0.6 tons [2]. - There remains significant energy-saving potential in the ammonia synthesis and methanol industry, with the technology expected to bring both economic and environmental benefits to enterprises [2].