文献类型：期刊文献

中文题名：基于电渗析-结晶耦合的苯酚-CO_(2)羧化法对羟基苯甲酸精制工艺研究

英文题名：Research on Electrodialysis-Crystallization Coupling for the Purification of p-Hydroxybenzoic Acid via Carboxylation of Phenol With CO_(2)

作者：曹斗燕[1,2];刘鑫[1,2];丛梅[1,2];赵基钢[1,2]

机构：[1]华东理工大学绿色能源化学工程国际联合研究中心,上海200237;[2]华东理工大学化工学院,上海200237

年份：2026

卷号：42

期号：2

起止页码：471

中文期刊名：石油学报(石油加工)

外文期刊名：Acta Petrolei Sinica(Petroleum Processing Section)

收录：;EI(收录号：20262120776747);北大核心:【北大核心2023】；

基金：国家自然科学基金面上项目(22178109)资助。

语种：中文

中文关键词：对羟基苯甲酸;单极膜;电渗析-结晶耦合;低碳精制;能耗优化

外文关键词：p-hydroxybenzoic acid;monopolar membrane;electrodialysis-crystallization coupling;low-carbon refining;energy consumption optimization

摘要：针对苯酚-CO_(2)羧化法制备对羟基苯甲酸(PHBA)传统重结晶工艺存在的收率低、能耗高、废水排放量大等问题,提出了一种电渗析-结晶耦合低碳精制新工艺。首先,通过单因素实验优化了电渗析过程的工艺参数,确定了最优化条件为:操作电压15 V、PHBA初始质量浓度90 g/L、循环体积流量200 L/h。在此条件下,电渗析过程的脱盐率达到98.7%,PHBA回收率达到92.4%,单位能耗为0.231 kW·h/kg。将优化后的电渗析-结晶耦合工艺与传统重结晶工艺进行对比,结果表明,电渗析-结晶耦合工艺使PHBA回收率提升至94.5%(较传统重结晶工艺PHBA回收率64.4%提升30.1百分点),单位能耗降低约50%,碳排放量减少约39%,废水排放率低于7%,且PHBA产品纯度高达99.9%。电渗析-结晶耦合技术可有效突破PHBA传统精制工艺的技术瓶颈,为绿色低碳生产提供了可行的技术路径。
To address the issues of low yield,high energy consumption,and significant wastewater discharge in the traditional recrystallization process for preparing p-hydroxybenzoic acid(PHBA)via phenol-CO_(2) carboxylation,this study proposes a novel low-carbon refining process that integrates electrodialysis and crystallization.Firstly,the process parameters of electrodialysis were optimized through single-factor experiments,and the optimal conditions were identified as follows:operating voltage of 15 V,initial PHBA mass concentration of 90 g/L,and circulating volume flow rate of 200 L/h.Under these conditions,the electrodialysis process achieved a desalination rate of 98.7%,a PHBA recovery rate of 92.4%,and an energy consumption of 0.231 kW?h/kg.The optimized electrodialysiscrystallization coupling process was compared with the traditional recrystallization process.The results demonstrate that the coupling process increased the PHBA recovery rate to 94.5%,representing an approximately 30.1 percentage point improvement over the 64.4%recovery rate of the traditional recrystallization process.Additionally,The process achieved a 50%reduction in unit energy consumption,a 39%decrease in carbon emissions,and a wastewater discharge rate below 7%,and 99.9%purity of the PHBA product.These findings suggest that the electrodialysis-crystallization coupling technology effectively overcomes the technical limitations of conventional PHBA refining processes,offering a viable path toward green and low-carbon production.