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1. 发明授权

US5946480A Method and apparatus for computer simulation of pentane isomerization reactions 失效
标题翻译：戊烷异构化反应的计算机模拟方法和装置
公开(公告)号：US5946480A
公开(公告)日：1999-08-31
申请号：US77
申请日：1993-01-04
申请人： Edward L. Sughrue, II , Raul Adarme , Fan-Nan Lin
发明人： Edward L. Sughrue, II , Raul Adarme , Fan-Nan Lin
IPC分类号： G05B17/02 , G06F3/00
CPC分类号： G05B17/02
摘要： A well reasoned steady state model for simulation of pentane isomerization in a long tubular reactor predicts important reaction variables such as feed conversion, product yields, temperature and pressure. The predictions are based on inputs including feed flowrates, composition, temperature and pressure. The model includes a set of differential equations for component concentrations with respect to axial distance along the reactor, and reaction rate constants expressed in terms of physical properties. A method of programming a computer for simulating the reaction is disclosed.
摘要翻译：长管状反应器中戊烷异构化模拟的良好推理稳态模型预测了重要的反应变量，如进料转化率，产物产率，温度和压力。预测是基于输入，包括进料流量，组成，温度和压力。该模型包括一组关于沿着反应器的轴向距离的组分浓度的微分方程，以及根据物理性质表示的反应速率常数。公开了一种用于模拟反应的计算机编程方法。

2. 发明授权

US5341313A Catalyst life prediction in hydrodesulfurization 失效
标题翻译：加氢脱硫催化剂寿命预测
公开(公告)号：US5341313A
公开(公告)日：1994-08-23
申请号：US924138
申请日：1992-08-03
申请人： Stephen L. Parrott , Raul Adarme , Fan-Nan Lin , Edwin P. Sasscer
发明人： Stephen L. Parrott , Raul Adarme , Fan-Nan Lin , Edwin P. Sasscer
IPC分类号： C10G45/72 , G06F17/50 , G06G7/58
CPC分类号： C10G45/72 , G06F17/50 , G06F2217/16
摘要： Catalyst life in desulfurization of distillate hydrocarbon streams is predicted with the aid of a computer simulation which embodies an analytical kinetic model of a hydrodesulfurization reaction and a semi-empirical model for catalyst deactivation. The simulation specifies the decline of catalyst activity with time and a current reaction temperature required to maintain the initial catalyst activity. The useful life of the catalyst is considered to be the time required for catalyst activity in the simulated reaction to decline sufficiently from its initial level so that a predefined maximum reaction temperature is reached while maintaining a desired level of sulfur in the desulfurized product. The computer time needed to simulate the reaction is decreased by combining superior features of LOTUS 1-2-3 and FORTRAN language, such that input/output and graphic operations are implemented with LOTUS 1-2-3 and numerical calculations are executed in FORTRAN.
摘要翻译：借助于体现加氢脱硫反应的分析动力学模型和催化剂失活的半经验模型的计算机模拟预测了馏出物烃流脱硫的催化剂寿命。该模拟规定了催化剂活性随时间的下降以及维持初始催化剂活性所需的当前反应温度。催化剂的使用寿命被认为是模拟反应中的催化剂活性从其初始水平充分降低所需的时间，从而达到预定的最大反应温度，同时在脱硫产物中保持所需水平的硫。通过结合LOTUS 1-2-3和FORTRAN语言的优越特性，可以减少模拟反应的计算机时间，从而使用LOTUS 1-2-3实现输入/输出和图形操作，并在FORTRAN中执行数值计算。

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