A 38 Lumped Reactor Modeling Method for Continuous Reforming Unit

A modeling method and reforming device technology, applied in naphtha catalytic reforming, instruments, special data processing applications, etc., to achieve the effects of improving accuracy, eliminating production bottlenecks, and improving economic benefits

Active Publication Date: 2011-12-21
ZHEJIANG UNIV
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Problems solved by technology

[0018] The purpose of the present invention is to address the deficiencies of the existing reforming reaction model, and provide a 38-lumped continuous reforming unit reactor modeling method to improve the model accuracy and meet the needs of modern reforming unit flow simulation

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  • A 38 Lumped Reactor Modeling Method for Continuous Reforming Unit
  • A 38 Lumped Reactor Modeling Method for Continuous Reforming Unit
  • A 38 Lumped Reactor Modeling Method for Continuous Reforming Unit

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with accompanying drawing.

[0045] 1. Division of lumped components

[0046] Catalytic reforming is one of the most important industrial applications of catalysis. The reforming process has a complex catalytic reaction system. Whether the purpose is to produce high-octane gasoline components or aromatics, it is necessary to maximize the combination of paraffins and Naphthenes are converted to aromatics. The classic reforming reaction mechanism is the dual-functional reforming catalyst reaction mechanism proposed by Mills et al. (such as figure 1 ), it believes that the catalyst has two catalytic properties, one is metal performance, which plays the role of hydrogenation and dehydrogenation, and the other is acidic, which has the effect of isomerization. Alkenes are then cyclized at the acidic center to five-membered cycloalkanes, further isomerized to six-membered cycloalkanes, and finally dehydroge...

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Abstract

The invention discloses a modeling method for a 38-lumping continuous reforming device reactor. The modeling method comprises the following steps of: 1) subdividing a reaction material into 38 lumping components; 2) constructing a reforming reaction network comprising 86 reactions; 3) building a reforming reaction dynamical model equation group on the basis of the reaction network by combining a reactor structure; 4) accumulating an influence of catalyst inactivation to estimation of each reforming reaction dynamical parameter, determining 86 model parameters, and estimating the model parameters by adopting a method combined with a gradient descent method and a broyden fletcher goldfarb shanno (BFGS) variable scale optimization algorithm based on an industrial data sample. On the basis ofa dynamic mechanism of reforming reaction, the precision of a reforming model is improved by fully using an advanced computer technology and a test analysis condition and the simulation of a reforming device is closer to the actual reaction, so that an instruction having a practical significance is provided for eliminating the production bottleneck and optimizing each operating parameter, and theeconomic benefit of the device can be enhanced.

Description

technical field [0001] The invention relates to a reactor modeling method for a continuous reforming unit, specifically, a method based on lump theory and catalytic reforming reaction mechanism to divide reaction materials into 38 virtual components and establish their reaction network, and then according to The structural characteristics of the reactor and the method of establishing the kinetic model of the reactor. Background technique [0002] Catalytic reforming is one of the most important processing technologies in the oil refining and petrochemical industry, and is the main process for producing aromatics and high-octane gasoline components from petroleum. At the same time, it is rich in hydrogen and is an important source of hydrogen for hydrogenation units. , occupies an important position in petrochemical enterprises. Catalytic reforming to naphtha (mainly C 6 —C 12 There are more than 300 kinds of pure hydrocarbons) as raw materials, under a certain operating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00C10G35/04
Inventor 王连山梁超张泉灵苏宏业
Owner ZHEJIANG UNIV
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