Packing tower flooding prediction method based on pressure drop standard deviation analysis

A standard deviation and prediction method technology, applied in the direction of measuring devices, instruments, etc., to achieve the effect of wide application range, small detection interference, accurate and reliable measurement

Inactive Publication Date: 2015-02-18
ZHEJIANG UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention overcomes the shortcomings of the existing methods for predicting flooding of packed towers and p

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  • Packing tower flooding prediction method based on pressure drop standard deviation analysis
  • Packing tower flooding prediction method based on pressure drop standard deviation analysis
  • Packing tower flooding prediction method based on pressure drop standard deviation analysis

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] 1) Experimental device

[0023] Place the pressure measuring ports all around the same height of each packing layer of the packed tower, measure the pressure drop of the packing layer at the same height, and take certain measures to prevent the liquid phase in the packed tower from flowing back into the pressure measuring tube. In the experiment, the structured packing tower is made of plexiglass material with a diameter of 220mm, and the micro-intelligent differential pressure transmitter produced by Yokogawa Instruments, model EJA120A, with a range of 0-1KPa, an output of 4-20mA DC, and a single-chip microcomputer for real-time Collect data and measure the pressure drop of packing layer at different heights respectively. Through the analysis, the real-time analysis results of the standard deviation of the pressure drop of the packing layer are obtained.

[0...

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Abstract

The invention discloses a packing tower flooding prediction method based on pressure drop standard deviation analysis. The method includes 1, arranging pressure drop detection ports of packing layers of a packing tower; 2, allowing an intelligent pressure transmitter to connect to the pressure drop detection ports through pressure detection pipes and perform detection in real time; 3, allowing the pressure drop detection ports to transmit the pressure drop data to a data collector, processing the data, and acquiring the changing curve of pressure drop with tower operation flux and the pressure drop standard deviation distribution curve; 4, adopting the pressure drop standard deviation distribution curve as the basis for judging the packing tower flooding, and determining the flooding state when the slope of the pressure drop standard deviation distribution curve exceeds a critical value. The acquiring frequency of the pressure drop detection ports is larger than 20 hertz.

Description

technical field [0001] The invention relates to a method for predicting liquid flooding of a packed tower, in particular to a method for predicting liquid flooding of a packed tower based on the analysis of the standard deviation of pressure drop. Background technique [0002] Liquid flooding is the limit state during the operation of the packed tower, and it is a state that is not allowed to occur in actual industrial production. In order to improve energy saving and emission reduction capabilities, enterprises often increase the operating flux of the packed tower as much as possible, so that the working state of the packed tower is as close to the flooding point as possible without flooding. Therefore, in order to achieve better operating performance of the packed tower, it is necessary to detect the operating state of the packed tower in real time and predict the occurrence of flooding of the packed tower. For a long time, there have been many studies on the operational ...

Claims

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Application Information

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IPC IPC(8): G01D21/00
Inventor 金伟娅张峰陈冰冰高增梁郑佳欢
Owner ZHEJIANG UNIV OF TECH
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