混合二元酸分离提纯丁二酸  

Separation and purification of succinic acid from mixed dibasic acid

作　　者：彭胜 王志彦 Peng Sheng;Wang Zhiyan(North China University of Science and Technology,Tangshan 063210,China;Tangshan Kailuan Chemical Technology Corporation Ltd.,Tangshan 063020,China;Tangshan Key Laboratory of Deep Processing of Coal Chemical Byproducts and Comprehensive Utilization of Resources,Tangshan 063020,China)

机构地区：[1]华北理工大学,河北唐山063210 [2]唐山开滦化工科技有限公司,河北唐山063020 [3]唐山市煤化工副产品精深加工与资源综合利用重点实验室,河北唐山063020

出　　处：《煤炭与化工》2021年第12期129-132,共4页Coal and Chemical Industry

摘　　要：为解决传统塑料产生的“白色污染”问题,生物可降解材料聚丁二酸丁二醇酯(PBS)越来越倍受关注,因此获取低成本丁二酸原料能有效推动PBS的推广应用。以混合二元酸(DBA)为原料,采用有机溶剂将原料中的戊二酸和己二酸溶解脱除获得丁二酸产品。考察了溶剂种类、液固比以及原料配比等对丁二酸纯度的影响,结果表明以卤代烃为溶剂,在溶解温度为80℃、固液比为11、DBA含量为0.3、溶解时间为1.5 h条件下,一次溶解过程即可获得纯度达到97.4%的丁二酸产品,丁二酸回收率>98%。该方法充分利用了己二酸副产物,有效降低了丁二酸生产成本,为进一步获取更高纯度丁二酸奠定了基础。In order to solve the problem of"Plastics Pollution"caused by traditional plastics,biodegradable material polybutylene succinate(PBS)has attracted more and more market attention.Therefore,obtaining low-cost succinic acid could promote the popularization and application of PBS effectively.The succinic acid was obtained by dissolving the glutaric acid and adipic acid from mixed dibasic acid with organic solvent.The effects such as different solvents,liquid-solid ratio and quality ratio of raw material on the purity of succinic acid were investigated.The results show that the halogenated hydrocarbon was used as solvent,under the conditions of 80℃,11 solid-liquid ratio,0.3 DBA content and 1.5 h dissolution time,the succinic acid product with purity of 97.4%can be obtained in just one dissolving process,and the recovery of succinic acid is more than 98%.The full use of adipic acid by-products was made,the production cost of succinic acid was reduced effectively,and a foundation for further obtaining higher purity succinic acid was laid.

关 键 词：丁二酸 分离 提纯 混合二元酸 溶解度 

分 类 号：TQ225.144[化学工程—有机化工]