Particle size distribution modeling and control method in crystallization process

A particle size distribution and control method technology, applied in the direction of adaptive control, general control system, control/adjustment system, etc., can solve the problems of poor control effect and low product quality, achieve improved particle size distribution, increase crystallization yield, increase The effect of average crystal size

Active Publication Date: 2018-09-04
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional control curve is generally linear or explored through the process, the control effect is poor, and the product quality is low

Method used

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  • Particle size distribution modeling and control method in crystallization process
  • Particle size distribution modeling and control method in crystallization process
  • Particle size distribution modeling and control method in crystallization process

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Embodiment Construction

[0030] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0031] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0032] Explanation of terms:

[0033] The Apelblat equation is:

[0034] lnC eq =a+b / T+clnT (1)

[0035] Amo...

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Abstract

The invention discloses a particle size distribution modeling and control method in a crystallization process. The particle size control method in the crystallization process comprises the following steps: establishing an optimal control module of particle size distribution in the crystallization process by taking the average crystal particle size as index for measuring the crystal particle size distribution and combining with crystallization process constraint conditions on the basis of a particle size distribution model in the crystallization process; performing discretization and parameterization processing on particle size control vectors in the crystallization process, to solve the optimal control model of the particle size distribution in the crystallization process, so as to obtainan optimal control curve in the crystallization process, and realize maximization of average particle size of crystals. According to the method, an acquiring method of a control curve in the crystallization process can be improved, and the crystallization efficiency and average crystal particle size can be improved.

Description

technical field [0001] The invention belongs to the field of process control, in particular to a method for modeling and controlling particle size distribution in a crystallization process. Background technique [0002] Crystallization is widely used in the fields of food processing, pharmaceutical production, metallurgy and chemical industry due to its advantages of high efficiency, high crystal purity, low pollution and low energy consumption, and is an indispensable link in industrial production. Crystal particle size distribution is an important index to measure the quality of crystals. Modeling and controlling the particle size distribution in the crystallization process is of great significance for improving the quality of crystal products and crystallization efficiency. [0003] The crystallization process is a complex process of heat and mass transfer, and the particle size distribution of crystals is not only affected by a single variable. In many practical applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 李歧强李刚
Owner SHANDONG UNIV
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