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Catalyst feeding optimal control system and method for continuous stirred tank reactor

An optimal control, decentralized control system technology, applied in general control systems, control/regulation systems, adaptive control, etc.

Active Publication Date: 2018-10-26
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, optimal control theory and corresponding methods are rarely used in the control system of domestic continuous stirred tank reactors, and the parameters in the controller are often set by experience

Method used

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  • Catalyst feeding optimal control system and method for continuous stirred tank reactor
  • Catalyst feeding optimal control system and method for continuous stirred tank reactor
  • Catalyst feeding optimal control system and method for continuous stirred tank reactor

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Embodiment 1

[0076] The continuous stirred tank reactor uses raw material A and catalyst B to produce chemical product C, the reaction is carried out during the stirring process of the motor, and the concentration of reactant C in the reaction process is x 1 (t) and the concentration of catalyst B x 2 (t) Mainly by controlling the opening of the reactor coolant valve u 1 (t) and catalyst feeding valve opening u 2 (t) Realization, where a proportional controller composed of coolant and reactant outlet temperature controls the internal temperature of the reactor, and the catalyst feed is divided into direct input 0.1u 2 (t) and mixed input with delay 0.9u 2 (t-s) two parts, the duration of the production process is 0.2 hours, the opening range of the catalyst control valve is -1 to 1, and the opening of the coolant control valve is -2 to 2. The optimal control requirement of the production process is to obtain The catalyst and coolant valve control strategy that minimizes the amount of ca...

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PUM

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Abstract

The invention discloses a catalyst feeding optimal control system and method for a continuous stirred tank reactor. The system comprises a continuous stirred tank reactor, a reactant concentration sensor, a catalyst concentration sensor, an analog to digital converter, a field bus network, a distributed control system, a main control room status display module, a digital-to-analog converter, a catalyst control valve, a coolant control valve end, and a temperature sensor. The reactant concentration sensor and the catalyst concentration sensor acquire the concentration of the material componentsin the reactor in real time. The DCS obtains an optimal control strategy of the catalyst input amount and the coolant input amount in the specified production time range by performing the internal control variable parameterization optimal control algorithm, and converts the optimal control strategy to an opening control command of the catalyst control valve and the coolant control valve to allowthe catalyst control valve and the coolant control valve to perform corresponding actions. The catalyst feeding optimal control system and method minimizes the catalyst and coolant use amount while minimizing the catalyst concentration, the reactant concentration, and the temperature deviation.

Description

technical field [0001] The invention relates to the production control field of a continuous stirred tank reactor, and mainly relates to an optimal control system for catalyst feeding in a continuous stirred tank reactor, which can automatically control the concentration of reactants, catalyst concentration and reactor temperature in the continuous stirred tank reactor, Minimize catalyst and coolant usage while keeping catalyst concentration, reactant concentration, and temperature from setpoint deviations. Background technique [0002] Continuous stirred tank reactors are widely used in industrial fields such as chemical production, fine chemical industry, biomedicine, and food production. For continuous stirred tank reactors, in the stable production process, the key factors affecting the product quality of reactants are the catalyst concentration and the internal temperature of the reactor. Due to the different production process requirements of different products, optim...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 刘平陈晓雷李鹏泽吕霞付虞继敏王平刘兴高
Owner CHONGQING UNIV OF POSTS & TELECOMM
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