Automatic control method for acyl chloride synthesis reaction

A synthesis reaction and acid chloride technology, applied in the field of automatic control that can realize fully automatic reaction, can solve the problems of inaccurate control, long reaction time, stable gas flow, etc., and achieve the effect of ensuring equipment safety, shortening reaction time and stable reaction

Inactive Publication Date: 2020-04-17
SHANDONG KAISHENG NEW MATERIALS
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  • Abstract
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Problems solved by technology

[0003] The existing reaction control method is manual control, the on-site observation is not timely, and the control is not accurate, which may lead to overpressure in the heating stage, and the stable reaction kettle pressure in the reaction stage cannot ensure the stability of the gas flow generated by the reaction. The reaction time is long and affects the production capacity.

Method used

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  • Automatic control method for acyl chloride synthesis reaction
  • Automatic control method for acyl chloride synthesis reaction
  • Automatic control method for acyl chloride synthesis reaction

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Embodiment

[0027] Such as Figure 1 to Figure 3 As shown, the automatic control method of the acid chloride synthesis reaction, the DCS control system terminal 4 is connected to the temperature detector 7, the flow detector 6 and the pressure detector 5, the jacket of the reactor 1 is provided with a steam regulating valve, and the steam regulating valve is connected to the DCS Control system terminal 4, reactor 1 is connected with heat exchanger 2 via gas-liquid separator 3, gas-liquid separator 3 is connected with flow detector 6, pressure detector 5 and temperature detector 7 are both connected with reactor 1, temperature The detector 7 is used to detect the temperature in the reactor 1. The reaction gas in the reactor 1 is separated by the gas-liquid separator 3 and the gas flow is detected by the flow detector 6, and the pressure detector 5 is carried out in the reactor 1. Pressure detection, the steam regulating valve is used to adjust and control the parameters of the flow, pressur...

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Abstract

The invention relates to the technical field of automatic control of acyl chloride synthesis reactions, particularly to an automatic control method capable of realizing a full-automatic reaction, wherein the method comprises the following steps: a feeding stage, a heating stage, a stable reaction stage, a constant temperature stage and a heat preservation stage. According to the control method, aphthaloyl dichloride synthesis reaction is carried out sequentially according to a processes of temperature rise, stable reaction, constant temperature and heat preservation, so that the full-automatic control of the system is achieved, manual intervention is not needed, and the automatic control method capable of achieving timely reaction and guaranteeing equipment and personal safety is provided.

Description

Technical field [0001] The invention relates to the technical field of automatic control of acid chloride synthesis reactions, in particular to an automatic control method capable of realizing fully automatic reactions. Background technique [0002] In the synthesis reaction of terephthaloyl chloride, the traditional control method is to fully open the steam regulating valve manually after the reactor is filled with terephthaloyl chloride, thionyl chloride and catalyst, and the pressure in the reactor does not exceed the limit value In the case of observing the reaction gas generated by the on-site glass rotor flowmeter showing a certain flow rate, turn to control the steam regulating valve to automatically stabilize the reactor pressure, and observe the reaction kettle materials and the reaction generated gas on-site glass rotor flowmeter to judge the reaction. End point; if the reactor pressure exceeds the limit during the heating phase, manually turn off or close the steam reg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C07C51/60C07C63/24C07C201/12C07C205/57
CPCB01J19/0006B01J19/0013B01J19/0033B01J2219/00051B01J2219/00162C07C51/60C07C201/12C07C63/24C07C205/57
Inventor 孟凡德孙丰春张清新王志亮刘晓玉崔涛
Owner SHANDONG KAISHENG NEW MATERIALS
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