Solid-liquid separation system and method based on dynamic PCA evaporative crystallization

Abstract

According to a solid-liquid separation system and method based on dynamic PCA evaporative crystallization, a controller effectively controls and monitors a solid-liquid separation unit, and an image collection module obtains material images of a cyclone and a centrifugal separator; and the change of the basic information and the image information of the materials on the time sequence can be analyzed in a data processing module through a dynamic PCA model according to the basic information of the materials of a cyclone and a centrifugal separator, so that the output result fits the actual situation, the monitoring control is more accurate and more adaptive. And unqualified materials can be returned to evaporative crystallization process equipment, so that the materials with relatively low solid content are prevented from entering drying equipment and being caked, the continuous and stable operation of the evaporative crystallization process is ensured, and the operation stability of the evaporative crystallization process is improved.

Description

technical field [0001] The invention relates to the field of solid-liquid separation in an evaporation crystallization process, in particular to a dynamic PCA-based evaporation crystallization solid-liquid separation system and method. Background technique [0002] A key point in the "zero discharge" and resource utilization projects of mine water and coal chemical wastewater is the solid-liquid separation process of the crystalline salt saturated solution after evaporation and crystallization. Whether the process is smooth or not directly affects the stable operation of the entire project, as well as the front-end water reuse and treatment volume. [0003] At this stage, the "zero discharge" of mine water and industrial wastewater and the evaporation and crystallization process of resource engineering often occur due to the fact that the solid content of the material entering the centrifuge is too thin, which leads to the fact that the centrifuge cannot separate the solid a...

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Problems solved by technology

[0005]Aiming at the "zero discharge" of existing mine water and industrial wastewater and the evaporation and crystallization process in resource technology cannot effectively separate solid and liquid, and the conventional PCA model does not Considering the change of variables in the time series, which leads to the problem of partial information loss, the present invention provides a solid-liquid separation system and method based on dynamic PCA evaporation crystallization. Reliability and compatibility, but also reduce the cost of calculation, monitoring and control is more accurate and more adaptable, and improve the stability of the evaporation crystallization process

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