Selection and Evaluation of a New Extractant for Caprolactam Extraction  

作　　者：龚行楚 吕阳成 李牧 马雪峰 倪前银 骆广生 

机构地区：[1]The State Key'Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University,Beijing 100084, China

出　　处：《Chinese Journal of Chemical Engineering》2008年第6期876-880,共5页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China （20490200, 20525622） and the National Basic Research Program of China （2007CB714302）.

摘　　要：Mixed solvent of 1-octanol and cyclohexane with 60% （by mass） 1-octanol content was selected as a new extractant for caprolactam extraction. Compared with benzene or toluene, the new extractant has larger extraction capacity and much lower toxicity. Although the extraction capacity of the new extractant is smaller than that of pure 1-octanol, 1-octanol solubility of the new extractant in aqueous phase is much smaller. Because of its physical properties of lower density, lower viscosity, and higher interfacial tension, the new extractant performed much better phase separation ability than pure 1-octanol. The new extractant showed certain selectivity when dealing with lactam oil. The mixed solvent of 1-octanol and cyclohexane with 60% （by mass） 1-octanol content is a promising extractant for caprolactam extraction.有 60% 的 1-octanol 和环己烷的混合溶剂(由质量) 1-octanol 内容为己内酰胺抽取作为新提炼之物被选择。与苯或甲苯相比，新提炼之物有更大的抽取能力和低得多的毒性。尽管新提炼之物的抽取能力比纯 1-octanol 的小，在水的阶段的新提炼之物的 1-octanol 溶解度小得多。因为它更低的密度，更低的粘性，和更高界面的紧张的物理性质，新提炼之物比纯 1-octanol 执行了好一些的阶段分离能力。新提炼之物看了某些选择是否处理酮油。有 60% 的 1-octanol 和环己烷的混合溶剂(由质量) 1-octanol 内容是为己内酰胺抽取的有希望的提炼之物。

关 键 词：CAPROLACTAM EXTRACTION OCTANOL CYCLOHEXANE 

分 类 号：TQ226[化学工程—有机化工]