Title:
RECTIFICATION CONTROL SYSTEM FOR PREPARATION OF ELECTRONIC-GRADE TRIFLUOROMETHANE AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/226226
Kind Code:
A1
Abstract:
A rectification control system for preparation of electronic-grade trifluoromethane and a control method therefor. The method comprises: acquiring temperature data of a molecular sieve adsorber, pressure data of the molecular sieve adsorber, flow data of a crude trifluoromethane product input into the molecular sieve adsorber, and an operating power of a low-temperature heat exchanger of a rectification tower at a plurality of predetermined time points including the current time point (S110); acquiring gas chromatograms of a rectification product at the plurality of predetermined time points including the current time point (S120); arranging into a two-dimensional input matrix the temperature data of the molecular sieve adsorber, the pressure data of the molecular sieve adsorber and the flow data of the crude trifluoromethane product input into the molecular sieve adsorber at the plurality of predetermined time points including the current time point, and then passing the two-dimensional input matrix through a first convolutional neural network, so as to generate a first feature map, wherein adjacent layers of the first convolutional neural network use convolutional kernels, which are mutually transposed (S130); passing, through a context encoder, which includes an embedding layer, the operating power of the low-temperature heat exchanger of the rectification tower at the plurality of predetermined time points including the current time point, so as to obtain a plurality of feature vectors, and arranging the plurality of feature vectors, which are in two dimensions, into a feature matrix and then passing the feature matrix through a second convolutional neural network, so as to obtain a second feature map (S140); passing, through a third convolutional neural network using a three-dimensional convolutional kernel, gas chromatograms of the rectification product at the plurality of predetermined time points including the current time point, so as to obtain a third feature map (S150); performing class-difference-based feature value correction on each of the first to third feature maps, so as to generate corrected first to third feature maps (S160); fusing the corrected first to third feature maps, so as to obtain a classification feature map (S170); and passing the classification feature map through a classifier, so as to obtain a classification result, wherein the classification result indicates whether a combination of control parameters at the current time point is reasonable (S180).
Inventors:
HUA HUI (CN)
QIU LING (CN)
LAI TIANHUA (CN)
LI WEIGUO (CN)
LAI JINXIANG (CN)
WANG FENGXIA (CN)
QIU LING (CN)
LAI TIANHUA (CN)
LI WEIGUO (CN)
LAI JINXIANG (CN)
WANG FENGXIA (CN)
Application Number:
PCT/CN2022/116148
Publication Date:
November 30, 2023
Filing Date:
August 31, 2022
Export Citation:
Assignee:
FUJIAN DEL TECH CO LTD (CN)
International Classes:
G05B13/04; B01D3/14; C07C17/38
Foreign References:
| CN114133314A | 2022-03-04 | |||
| CN111144490A | 2020-05-12 | |||
| CN108929193A | 2018-12-04 | |||
| CN113987937A | 2022-01-28 | |||
| US4898645A | 1990-02-06 | |||
| US6413378B1 | 2002-07-02 | |||
| US20040167366A1 | 2004-08-26 | |||
| US5461177A | 1995-10-24 |
Attorney, Agent or Firm:
BEIJING HENGTAI MINGRUI INTELLECTUALPROPERTY AGENCY CO., LTD. (CN)
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