Ivanchina E.M., Ivashkina E.N., Dolganov I.M., Solopova A.A., Dolganova I.O., Pasyukova M.A.
(National Research Tomsk Polytechnic University) E-mail: email@example.com
Влияние конструкционных и технологических параметров пленочного реактора сульфирования линейного алкилбензола на скорость образования побочных продуктов с применением метода математического моделирования
Keywords: sulfonation, linear alkylbenzene, alkylbenzenesulfonic acid, multi-tube film reactor, tetralines, sulfones, mathematical modeling.
Abstract: In this paper we analyze the influence of the structural parameters of a multi-tubular film reactor for linear alkylbenzene sulfonation (LAB) on the formation of such by-products as tetralins and sulfones applying the method of mathematical modeling. The content of tetralines and sulfones in the product mixture negatively affects process, because these substances form a highly viscous component that degrades the properties of the product. Moreover, highly viscous component accumulates on the inner surface of reaction tubes and other structural parts of the reactor. To eliminate these negative effects, the reactor is washed. To achieve greater economic efficiency of the process, as well as reduce environmental load it is necessary to achieve the maximum duration of the reactor operating period and the minimum number of reactor washes. As a result, the optimal design of the sulfonation reactor was determined. The most optimal reactor consists of 40 tubes with the diameter d = 43 mm. It is shown that with a change in the LAB flow rate in the reactor tube, an increase in the mass transfer coefficient occurs. So, at a LAB volume flow rate per tube V = 0.95 ∙ 10-5 m3 / s, the mass transfer coefficient is 1.73 ∙ 10-2, and at V = 2.86 ∙ 10-5 the coefficient is 2.08 ∙ 10-2.
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