Abstract

The main approaches to developing a reactor block for the hydrodesulfurization of diesel fuels are considered taking into account the reactivity of the organosulfur components in the diesel fuel and the formation of pseudocomponents, which conventionally combine the group of organosulfur components. As the concentration of easily or difficult-to-hydrate sulfur-containing components in the raw material increases, the role of the substance limiting the quality of diesel-fuel purification can go from an easily hydrated to a difficult-to-hydrate pseudocomponent and vice versa. The efficiency of the operation of five variants of the reactor of hydrotreating units is compared. It is shown that, from the standpoint of minimizing catalyst loading, the two-reactor scheme of the hydrotreating process with separate feeding of low-boiling and high-boiling fractions of straight-run diesel fuel to the reactors is optimal. The necessity of determining the temperature boundary of their division, considering the qualitative and quantitative composition of these fractions in terms of organosulfur substances, has been substantiated.

中文翻译：

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柴油加氢处理的数学建模与优化

摘要

考虑到柴油中有机硫组分的反应性和通常合成有机硫组分组的假组分的形成，考虑了开发用于柴油燃料加氢脱硫的反应器模块的主要方法。随着原料中易含或难于水合的含硫成分的浓度增加，限制柴油燃料净化质量的物质的作用可能从易水合变为难水合的假组分，反之亦然。反之亦然。比较了加氢处理装置反应器的五个变体的运行效率。结果表明，从最小化催化剂负载的观点来看，加氢处理工艺的两反应器方案是将低沸点馏分和高沸点馏分的直馏柴油燃料分别进料到反应器中是最佳方案。确定这些分区的温度边界的必要性，考虑到了这些馏分在有机硫物质方面的定性和定量组成，已经得到证实。