Optimal control system for piston flow tube reactor based on adaptive optimization control node

A tubular reactor, optimized control technology, applied in the direction of adaptive control, control/regulation system, general control system, etc.

Inactive Publication Date: 2018-03-16
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, optimal control theory and corresponding methods are rarely used in the control methods of domestic plug flow tube reactors, and the parameters in the controller are often set based on existing experience

Method used

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  • Optimal control system for piston flow tube reactor based on adaptive optimization control node
  • Optimal control system for piston flow tube reactor based on adaptive optimization control node
  • Optimal control system for piston flow tube reactor based on adaptive optimization control node

Examples

Experimental program
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Effect test

Embodiment 1

[0188] A reversible exothermic reaction exists in a plug flow tubular reactor In order to maximize the concentration of product B, the optimal control strategy of the coolant flow rate needs to be studied. Its mathematical model is as follows:

[0189]

[0190] where x 1 (t), x 2 (t) respectively represents the concentration of the standardized product B, temperature (K), and u(t) represents the normalized flow rate of the coolant.

[0191] The control room engineer divides the duration of this production process t f =5min, the required information of coolant flow rate 0≤u(t)≤0.5 is input into the information collection module of DCS. The DCS immediately starts to run the optimal control method of the self-adaptive optimal control node, and its running process is as follows: image 3 Shown as:

[0192] Step E1: Initialize the operation of module 2, set the initial control grid number p=16, and the initial guess value of the coolant flow rate control strategy Set co...

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PUM

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Abstract

The invention discloses an optimal control system for a piston flow tube reactor based on an adaptive optimization control node. The system is composed of a piston flow tube reactor body, a liquid flow meter and a temperature sensor at the piston flow tube reactor end, an analog-to-digital converter, a field bus network, a DCS, a main control chamber coolant flow rate and reactor temperature display, a digital-to-analog converter at the flow control valve end, and a flow control valve. After the duration of the production process and the coolant flow rate control requirement are specified, theDCS obtains a flow rate control strategy and converts the flow rate control strategy into an opening instruction of the flow control valve, the opening instruction is sent through the field bus network to the digital-to-analog converter at the flow control valve end, the flow control valve correspondingly acts according to the received control instruction, the liquid flow meter and the temperature sensor collect the coolant flow rate and temperature of the piston flow tube reactor in real time and send the coolant flow rate and temperature back to the DCS. The concentration of a target product in a piston flow tube reactor can be maximized, and potential tapping and efficiency increasing can be achieved.

Description

technical field [0001] The invention relates to the field of reactor control, and mainly relates to an optimal control system for a plug flow tube reactor based on an adaptive optimization control node. The system enables automatic optimal control of the coolant flow rate in a plug flow tube reactor to increase the concentration of the target product. Background technique [0002] Plug flow tubular reactor is a kind of reactor widely used in the field of biochemical industry. In actual production, when the initial material concentration, reactor volume, production time and other factors are determined, the most critical factor affecting the product output is temperature, and the temperature is generally controlled by the flow rate of the coolant. Since different products have different production process requirements, it is of great significance to automatically perform optimal control of the coolant flow rate in the plug flow tube reactor according to the production proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 刘兴高李国栋
Owner ZHEJIANG UNIV
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