烷基化酸烃分离及其参数优化实验研究

Separation and parameter optimization of the sulfuric acid-in-isooctane emulsion in the alkylation process

针对硫酸烷基化酸烃乳化液体系,选用PTFE纤维层和316L纤维布层组合而成的高效聚结滤芯进行酸烃分离实验,重点研究了沉降段长径比L/D和纤维布层厚度δ2个关键因素对分离器分离效率的影响规律,并通过统计和分析进出口酸滴粒径大小和分布,进一步研究了两者对提高分离器分离效果的影响。实验结果表明,分离效率随着L/D的增加而提高,最佳L/D为7左右,随着纤维布层厚度δ的增加而提高,最佳厚度为7 mm左右。

Based on the sulfuric acid-in-isooctane emulsion system of the alkylation process,the filter cartridges made of PTFE fibrous material and 316 L fibrous knitted fabric material are used in the separation experiment of sulfuric acid-in-isooctane emulsion to study the influence of the thickness of knitted fabric δ and L / D on the separation efficiency. The drop diameter size and distribution of acid droplets dispersed in influent and effluent are obtained and analyzed to further study the separation efficiency under different values of L / D. Experimental results indicate that the coalescence separation effect shows an obvious increase as the L / D rises gradually,and the best L / D is about 7.Meanwhile,increasing the thickness of 316 L knitted fabric could decline the L / D and the best thickness is about 7 mm.