Full-automatic control method using fuzzy control for temp of polymerizing reactor

A technology of fuzzy control and control method, applied in the direction of temperature control, program control, computer control, etc., can solve the problems of unstable product quality, high labor intensity of workers, difficult control of kettle temperature, etc., to improve the level of production automation and eliminate waste. , the effect of reducing labor intensity

Inactive Publication Date: 2003-01-15
CHONGQING IRON & STEEL (GRP) CO LTD
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Problems solved by technology

For a long time, the polymerization reaction of the polymerization kettle in the chemical production process has been manually operated, because the temperature of the polymerization kettle is affected by factors such as chemical raw materials, formula ratio, and feeding accuracy, and the reaction speed changes extremely quickly during the polymerization process. , it is very difficult to control the temperature of the kettle, which often makes the product quality unstable, waste materials appear from time to time, and the labor intensity of the workers is high

Method used

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  • Full-automatic control method using fuzzy control for temp of polymerizing reactor
  • Full-automatic control method using fuzzy control for temp of polymerizing reactor
  • Full-automatic control method using fuzzy control for temp of polymerizing reactor

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Embodiment Construction

[0018] see figure 1 with figure 2 . Set up kettle temperature controller, stirring speed controller and brine controller in programmable logic controller (PLC machine),

[0019] Use the following methods to control the temperature of the polymerization tank, the stirrer and the flow of brine:

[0020] 1. Set the expected value SP of the kettle temperature in the kettle temperature controller and compare the actual measured value of the kettle temperature PV to obtain the kettle temperature deviation FE. The input language variables are the kettle temperature deviation FE and the kettle temperature deviation change rate DFE, and the output The linguistic variable is the output increment ΔU, where

[0021] FE=PV-SP, PV is the actual measured value, SP is the set value DFE = FE 2 - FE 1 T , ...

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Abstract

A full-automatic fuzzy control method for the temp of polymerizing reactor features that in programmable logic controller (PLC), there are reaction period program controller, reactor temp controller,stirring speed controller and saline controller, the variation of reactor temp gradient is monitored for judging if activating is needed, a desired temp for relative reaction period is automatically set up, and the stirring speed and the flow of cooling saline is regulated. Its advantages are high effect and high quantity and quality of product.

Description

(1).Technical field [0001] The invention belongs to the field of industrial automation control, and specifically relates to a method for fully automatic control of the temperature of a polymerization kettle in a polymerization reaction by using fuzzy control technology. (2). Background technology [0002] In the process of chemical production, polymerizers are commonly used to polymerize organic compounds. Since a large amount of polymerization heat is generated during the polymerization reaction, it needs to be controlled to ensure the stability of production and product quality. For a long time, the polymerization reaction of the polymerization kettle in the chemical production process has been manually operated, because the temperature of the polymerization kettle is affected by factors such as chemical raw materials, formula ratio, and feeding accuracy, and the reaction speed changes extremely quickly during the polymerization process. , It is very difficult to control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/00G05B19/00G05D23/00
Inventor 陈开华
Owner CHONGQING IRON & STEEL (GRP) CO LTD
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