双氧水法制环氧丙烷装置废水醇醚回收技术与经济效益分析  

TECHNOLOGY AND ECONOMIC BENEFIT ANALYSIS OF PROPYLENE GLYCOL MONOMETHYL ETHER AND PROPYLENE GLYCOL RECOVERY FROM HPPO WASTEWATER

作　　者：丁晖殿 王皓[2] 李强 李红波 汪宝和 王瑾 朱璟 Ding Huidian;Wang Hao;Li Qiang;Li Hongbo;Wang Baohe;Wang Jin;Zhu Jing(SINOPEC Research Institute of Petroleum Processing Co.,Ltd.,Beijing 100083;SINOPEC Science&Technology R&D Department;R&D Center for Petrochemical Technology,Tianjin University)

机构地区：[1]中石化石油化工科学研究院有限公司,北京100083 [2]中国石油化工股份有限公司科技开发部 [3]天津大学石油化工技术开发中心

出　　处：《石油炼制与化工》2024年第12期81-87,共7页Petroleum Processing and Petrochemicals

摘　　要：双氧水法制环氧丙烷装置(HPPO)废水具有排放总量大、化学需氧量(COD)高、含盐量高、可生化性差的特点。采用多级差压热耦合精馏技术、环保型可循环共沸精馏技术和MVR热泵精馏技术相结合,对HPPO废水进行醇醚回收,在低能耗的同时实现了HPPO废水中高附加值有机物总回收率95%以上,丙烯利用率提高3~5百分点,除盐率接近100%,大幅降低了后续废水处理的难度。在化工行业节能减排、降本增效的大背景下,具有显著的经济效益和社会效益。The wastewater from hydrogene peroxide propylene oxide(HPPO)process has the characteristics of large total emission,high COD,high salt content and poor biodegradability.The recovery of propylene glycol monomethyl ether and propylene glycol from HPPO wastewater was carried out by the combination of multi-stage differential pressure thermal coupling distillation technology,environment friendly recyclable azeotrope distillation technology and mechanical vapor recompression(MVR)heat pump distillation technology.The total recovery rate of high value-added products in HPPO wastewater was more than 95%,the utilization rate of propylene was increased by 3-5 percentage points,and the desalination rate was close to 100%.After the recovery of propylene glycol monomethyl ether and propylene glycol,the difficulty of wastewater treatment was greatly reduced.Under the background of energy-saving and emission-reducing,cost-reducing and efficiency-increasing in the chemical industry,it has remarkable economic and social benefits.

关 键 词：双氧水法制环氧丙烷 醇醚回收 醚回收 

分 类 号：X703[环境科学与工程—环境工程]