Synthesis of surfactants based on linear alkylbenzenesulfonates is a complex multi-stage process that includes the following stages: alkanes dehydrogenation on Pt-containing catalyst, dienes hydrogenation on Ni-containing catalyst, HF-catalyzed alkylation of benzene with alkenes, and sulfonation of linear alkylbenzenes (LAB) with sulfur trioxide in a film reactor yielding alkylbenzene sulfonic acid (ABSA). When developing mathematical models of multi-stage processes it is necessary to consider the contingency of the apparatuses in the chemical-technological system. The design of the sulfonation reactor, as well as the feedstock composition and the dehydrogenation unit performance, i.e., the LAB flowrate to sulforator, significantly affects the ABSA synthesis efficiency. The studies were performed using the unsteady mathematical models of conjugated dehydrogenation and sulfonation processes. As a result, we determined the optimal design of the sulfonation reactor with number of tubes n = 40 and diameter d = 43 mm. We also outlined the preferred method for increasing the ABSA yield by switching to a double-reactor alkane dehydrogenation scheme with a flowrate of 100 m³/hour for two dehydrogenation reactors. This increases yield of alkenes and LAB by 71 %wt.

基于线性烷基苯磺酸盐的表面活性剂的合成是一个复杂的多阶段过程，包括以下步骤：在含Pt的催化剂上进行烷烃脱氢，在含Ni的催化剂上进行二烯加氢，HF与烯烃的苯催化的烷基化以及线性烷基苯的磺化（LAB）与三氧化硫在膜反应器中产生烷基苯磺酸（ABSA）。在开发多阶段过程的数学模型时，有必要考虑化学技术系统中设备的偶然性。磺化反应器的设计以及进料组成和脱氢单元的性能（即流向磺化器的LAB流量）显着影响ABSA的合成效率。使用共轭脱氢和磺化过程的不稳定数学模型进行了研究。结果，我们确定了磺化反应器的最佳设计，其中管数n = 40，直径d = 43 mm。我们还概述了通过切换到流量为100 m的双反应器烷烃脱氢方案来提高ABSA收率的优选方法两个脱氢反应器为^3个/小时。这将烯烃和LAB的产率提高了71重量％。