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Method for measuring content of acetic acid in acetic acid production in real time

A technology for real-time measurement of acetic acid content, applied in measuring devices, identification of molecular entities, instruments, etc., can solve the problems of not being able to grasp the quality of acetic acid in real time, and achieve the effect of simple operation and improved data support

Inactive Publication Date: 2021-11-09
刘太昂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a relatively big disadvantage in this: the quality of acetic acid cannot be grasped and understood in real time during these four hours.

Method used

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  • Method for measuring content of acetic acid in acetic acid production in real time
  • Method for measuring content of acetic acid in acetic acid production in real time
  • Method for measuring content of acetic acid in acetic acid production in real time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1: The modeling result of the quantification of acetic acid content based on partial least squares regression, such as figure 1 Indicated.

[0043] Depend on figure 1 It can be seen that the model of the forecast value of the model and the correlation coefficient of the measured value are 0.83.

Embodiment 2

[0044] Example 2: For 125 data, the quantification of the acetic acid content quantitative forecast model based on partial least squares regression, such as figure 2 Indicated.

[0045] Depend on figure 2 It can be seen that the prediction value of the model and the correlation coefficient of the measured value are 0.8.

Embodiment 3

[0046] Example 3: The acetic acid content forecast model based on 31 bias minimum multiplied regression is predicted to the newly collected 31 samples, and the results are shown in Table 5.

[0047] Serial number Acetic acid content% Serial number Acetic acid content% Serial number Acetic acid content% 1 99.88 12 99.89 23 99.90 2 99.89 13 99.90 24 99.89 3 99.90 14 99.90 25 99.90 4 99.89 15 99.91 26 99.88 5 99.90 16 99.87 27 99.84 6 99.87 17 99.86 28 99.86 7 99.87 18 99.90 29 99.90 8 99.88 19 99.85 30 99.88 9 99.86 20 99.89 31 99.85 10 99.88 21 99.91 11 99.88 22 99.89

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Abstract

In acetic acid quality detection, most companies carry out sampling detection once every four hours at present, so that enterprises cannot master and know the quality of acetic acid in real time. Therefore, research on a novel method for measuring the content of acetic acid in real time becomes an important subject in research in the field of acetic acid production. In order to overcome the defects in the prior art, the invention provides the method for measuring the content of acetic acid in the acetic acid production in real time. Based on production parameters detected in acetic acid production, such as the methanol feeding amount, the carbon monoxide feeding amount, the condensate temperature, the flash evaporation amount, the catalyst circulation amount, a pressure difference, the tower top reflux amount, the tower kettle temperature and the like, the parameters are subjected to comprehensive mapping processing, data subjected to the comprehensive mapping processing are modeled by using a data mining algorithm, therefore, a real-time detection result of the acetic acid content in acetic acid production is obtained. The method can display the acetic acid content in real time, is convenient and fast, and does not need experiments and complicated calculation.

Description

Technical field [0001] The present invention relates to the field of detection of producing product quality in acetic acid, in particular, to a real-time measurement method of acetic acid content in acetic acid. Background technique [0002] Acetic acid is one of the important organic acids. Mainly used to produce acetate, vinegar, acetate, acetic acid, and metal salts, also used as solvents and raw materials such as pesticides, pharmaceuticals and dyes, and have a wide range of use in photographic drug manufacturing, fabric printing and rubber industry. . In recent years, due to the strong growth of the lower reaches of acetic acid and new product development in the downstream enterprise, my country's acetic acid demand is surprising each year. In the face of strong market demand, domestic and foreign companies have invested acetic acid production unit in my country. my country's acetic acid industry has a big gap between production capacity or technology technology and foreign ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16C20/20G16C20/70G01D21/02
CPCG16C20/20G16C20/70G01D21/02
Inventor 刘太昂刘太行周央刘振昌朱峰吴治富周晶晶刘婷婷刘远朱鲁阳
Owner 刘太昂
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