Real-time prediction method for catalytic reforming device

A real-time forecasting and catalytic reforming technology, applied in forecasting, data processing applications, calculations, etc., can solve problems such as difficult to accurately describe the operation process of the device

Active Publication Date: 2015-04-01
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

The reason is that the current PIMS models of production planning all use fixed yields, which makes it difficult to accurately describe the actual operation process of the device.

Method used

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  • Real-time prediction method for catalytic reforming device
  • Real-time prediction method for catalytic reforming device
  • Real-time prediction method for catalytic reforming device

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Embodiment 1

[0028] 1. Mechanism modeling of catalytic reforming

[0029] figure 1 It is a simplified flow chart of the continuous catalytic reforming process. The composition of naphtha feedstock in the catalytic reforming process is complex, and there are many reactions and side reactions. A large number of studies have shown that the reactions that occur in the catalytic reforming process can be divided into several categories, mainly including: (1) dehydrogenation of six-membered cycloalkanes to aromatics; (2) isomerization of five-membered cycloalkanes to six-membered cycloalkanes; (3) Isomerization of alkanes; (4) Dehydrocyclization of alkanes; (5) Hydrocracking of alkanes and cycloalkanes; (6) Demethylation (or hydrogenolysis) of alkanes and aromatics; (7) Aromatic dealkylation reaction; (8) carbon deposition reaction.

[0030] For the modeling of reaction kinetics of such a complex reaction system, a lumped kinetic model is required. The so-called lumping (Lumping) is to merge ...

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Abstract

The invention relates to a real-time prediction method for a catalytic reforming device. On-site real-time data are processed through adopting a data reconciliation technology, and an improved differential evolution algorithm is combined for carrying out real-time correction on a reforming reaction kinetic parameter, so that a mechanism model can precisely describe the actual operation condition of the device. On the basis of the corrected model, the influence on the reforming product yield caused by key operation / process conditions such as the potential aromatic content, the feeding load, the inlet temperature, the reaction pressure and the hydrogen-oil ratio is analyzed. The segmented linearization is carried out according to the influence trends, a linear equation is resolved, corresponding Delta-Base yield data is obtained, a neural network modeling technology is combined for correlating the operation conditions with the Delta-Base data, a yield agency model is built, the yield data calculation speed is accelerated, the continuous yield real-time prediction of the catalytic reforming device is realized, and the theoretical support is provided for building a precise plan optimization PIMS model.

Description

technical field [0001] The invention relates to a method for real-time prediction of the yield of a catalytic reforming unit based on mechanism and operating characteristics, and the method can be used for modeling and simulation of catalytic reforming process, real-time model correction and real-time construction of PIMS production plan optimization model. Background technique [0002] Catalytic reforming is one of the main processing methods in modern oil refining and petrochemical processes. Reforming technology is to convert naphtha into aromatics-rich (benzene, toluene, xylene, BTX for short) through catalyst dehydrogenation and isomerization under the conditions of certain temperature, pressure, hydrogen-to-oil ratio and catalyst presence. The process of reforming gasoline with the by-production of high-purity hydrogen. [0003] Modern reforming catalysts consist of basic active components (such as platinum), promoters (such as rhenium, tin, etc.) and acidic supports ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04
CPCG06Q10/04
Inventor 钱锋杨明磊叶贞成杜文莉
Owner EAST CHINA UNIV OF SCI & TECH
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