The article describes the developed concept of a new, improved method of carrying out the alkylbenzene sulfonic acid (LABSA) ageing process in an industrial scale plant. Experimental studies of the new method of ageing step, confirming our expectations in terms of its high effectiveness, were preceded by the development of a mathematical model of the process, the high adequacy of which was verified in industrial realities.

The improvement of the subject ageing step consists in replacing the conventional continuous process with a semi-batch one, carried out in a system of two swinging stirred tank reactors. In each of the swinging reactors, the reaction is performed in two stages: in the first stage, during the filling of the reactor tank, which runs under the continuous, unsteady regime, and in the second stage, starting to run after completing filling the reactor, undergoing in the batch process regime. In order to ensure entire plant throughput continuity, the work of both swinging reactors is time phase-shifted.

The proposed solution was implemented on an industrial scale, within a real, licensed 24 000 t p.a. LABSA plant, achieving a 25–30% increase in the LAB to LABSA conversion rate. Above 98% of LABSA content and less than 0.3% of unreacted LAB were obtained in the final product, while maintaining a low value of the Klett colour index, not exceeding 20 units.

Apart from the series of standard product quality indicators, particular attention was paid to the concentration of sulfones in the final product, the value of which did not increase in relation to the conventional process.

本文描述了在工业规模工厂中进行烷基苯磺酸 (LABSA) 老化过程的新改进方法的开发概念。老化步骤的新方法的实验研究证实了我们对其高效性的期望，在此之前开发了该过程的数学模型，其高度充分性已在工业现实中得到验证。

老化步骤的改进在于用半间歇式工艺代替传统的连续工艺，该工艺在两个摆动搅拌釜反应器的系统中进行。在每个摆动反应器中，反应分两个阶段进行：在第一阶段，在反应罐的填充过程中，在连续、不稳定的状态下运行，在第二阶段，在完成填充后开始运行反应器，在批处理过程中进行。为了确保整个工厂的生产量连续性，两个摆动反应器的工作是时间相移的。

提议的解决方案在工业规模上实施，在一个实际的、获得许可的年产 24000 吨 LABSA 工厂中，实现 LAB 到 LABSA 的转化率提高 25-30%。在最终产品中获得了高于 98% 的 LABSA 含量和低于 0.3% 的未反应 LAB，同时保持了较低的 Klett 颜色指数值，不超过 20 个单位。

除了一系列标准产品质量指标外，还特别关注了最终产品中砜的浓度，其值相对于常规工艺没有增加。