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Intelligent control method for reaction temp in liquid-phase oxidizing reactor of p-xylene

A technology of oxidation reactor and reaction temperature, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problem that the controller design method is difficult to work.

Inactive Publication Date: 2004-09-15
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Given that intelligent control systems are suitable for highly nonlinear or difficult process description situations, traditional controller design methods are difficult to be effective in these situations

Method used

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  • Intelligent control method for reaction temp in liquid-phase oxidizing reactor of p-xylene
  • Intelligent control method for reaction temp in liquid-phase oxidizing reactor of p-xylene
  • Intelligent control method for reaction temp in liquid-phase oxidizing reactor of p-xylene

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] In the following table, when the reactor load changes, the intelligent control system itself can make judgments based on the heuristic knowledge solidified in the program. If the original knowledge and experience are changed, the human-machine interface of the intelligent control system can interface to communicate with the program. For example: the upper and lower limits of the extracted water, the upper and lower limits of the reaction temperature, the upper and lower limits of the tail oxygen concentration control, etc., can all be displayed in the parameter list of the intelligent controller.

[0038] T average (20mins)

Q average (20mins)

Intelligent control system output

∈[T_LO T_HI]

normal range

∈[Q_LO Q_HI]; normal range

The reactor is normal;

Each variable is kept;

∈[T_LO T_HI]

normal range

increase air volume;

Reaction pressure, pumped water volume maintenance ...

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PUM

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Abstract

An intelligent control method for the reaction temp of liquid-phase oxidizing reactor of p-xylene is characterized by that the relative meters are used to measure the variables which can influence the control of reaction temp. such as mixture flow, air flow, reaction pressure, oxygen partial pressure and the flow of pumped-out water, existing distributed control system is also used, and an intelligent system is used to search in intelligent knowledgement library for real-time control.

Description

1. Technical field [0001] The invention belongs to the field of chemical reaction engineering, and relates to a method for controlling the reaction process temperature in a p-xylene (PX, P-xylene) oxidation reactor in the production of pure terephthalic acid (PTA, Pure Terephthalic Acid). 2. Background technology [0002] Among various production processes of crude terephthalic acid (TA, Terephthalic Acid), the PX oxidation reaction has gradually become the mainstream process for producing TA due to its lower acid consumption and material consumption. Therefore, the intelligent control method of the reaction process temperature in the oxidation reactor is also aimed at this production process. And the production process is monitored by the distributed control system (DCS, Distributed Control Systems), and all parameter display, monitoring, alarm and control are carried out in the DCS system. [0003] The PX oxidation reaction process is: the raw material (liquid phase PX) i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C51/255C07C63/26
Inventor 钱锋马秋林杜文莉邢建良刘漫丹王振新李立新柏正奉唐宏林张井满
Owner SINOPEC YANGZI PETROCHEM
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