An automatic control device for diene ring-opening reaction

Abstract

The invention provides an automatic control device for a ring-opening reaction of dienes. The automatic control device comprises two ring-opening tanks, an oxidation tank, an online detection system,a regulating system and a controller, wherein the online detection system comprises a sampling component and a detecting component; the sampling component comprises a sealed chamber, an upper sleeve,a lower sleeve, a sampling rod, a spiral sample injector and a motor; the regulating system comprises a temperature sensor, a first pressure sensor and a heater, which are separately arranged in eachring-opening tank, and a second pressure sensor which is arranged in the sealed chamber. The automatic control device further comprises an air compressor, wherein the controller is electrically connected with both the online detection system and the regulating system. The automatic control device has the beneficial effects that tank-opened sampling is not required during the controlling of the ring-opening reaction; automatic sampling, automatic detection and automatic control can be achieved; the automatic control device has good sealing performance, and leakage does not occur during sampling, detecting and reaction; sample detection has no need of pressurizing a sample, artificial interference in reaction processes is reduced, and safe and normal proceeding of the reaction can be guaranteed.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to an automatic control device for diene ring-opening reaction. Background technique [0002] Synthetic principle of ring-opening reaction: ring-opening reaction Since MarKerhe and his colleagues first discovered in 1939 that the ketal system can be cracked with acetic anhydride in an autoclave to open the ring, it has undergone many process improvements and optimizations to form the current craft. [0003] The key to the ring-opening reaction is to form acetyl cations and increase the reaction temperature to promote the offensive ability of acetyl cations, and the presence of water affects the formation of acetyl cations, so the moisture of raw and auxiliary materials should be controlled in this step of the reaction. [0004] The ring-opening reaction uses acetic acid as a solvent, acetic anhydride as an acylating agent, pressurized ring-opening, the temperature is 210°C, and th...

AI Technical Summary

Problems solved by technology

[0006] The invention provides an automatic control device for the ring-opening reaction of diene, which solves the problem in the prior art that the ring-opening reaction system will be damaged by sampling and detection for the purpose of accurately controlling the reaction process

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