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Quick temperature control device and application thereof

A temperature control device and fast technology, applied in the direction of temperature control, non-electric variable control, control/regulation system, etc., can solve the problems of slow temperature change of heat transfer medium, unfavorable operation of controlled object, slow change of controlled temperature, etc. The effect of fast switching of operating variables, large operating flexibility, and small temperature drift

Inactive Publication Date: 2018-07-20
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing partition heat exchange process, the heat transfer medium entering the jacket (or coil) generally comes from a single heat source. When the controlled object needs to be raised or lowered in temperature, the heat source needs to be raised or lowered first. However, due to the large volume of the heat source , which inevitably leads to a slow change in the temperature of the heat transfer medium, and finally leads to a slow change in the controlled temperature
Especially when multiple controlled objects require multi-stage temperature operation, the existing method of temperature switching process consumes a lot of time, which is not conducive to the operation of the controlled object (such as chemical reaction) and is not conducive to improving work efficiency.

Method used

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  • Quick temperature control device and application thereof
  • Quick temperature control device and application thereof

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Experimental program
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Effect test

Embodiment 1

[0038] In this embodiment, the controlled object is a stirred tank, and the heat exchange medium conducts heat exchange of the reactor through a jacket. The material in the reactor undergoes an exothermic reaction and the heat release is small. The material is at room temperature at the beginning of the reaction, and fresh cold material may be added in the middle of the reaction. The temperature control target is to keep the temperature of the material at 85°C.

[0039] The temperature control device used includes: high temperature oil tank 1, low temperature oil tank 2, overflow pipe 3, mixing valve 4, circulation pump 5, online mixer 6, high level tank 7, controlled object temperature sensor 8, temperature controller 9, high temperature Oil tank temperature sensor 101, high temperature oil tank controller 102, high temperature oil tank heater 103, high temperature oil tank agitator 105, low temperature oil tank temperature sensor 201, low temperature oil tank controller 202, ...

Embodiment 2

[0045] Example 2 is basically the same as Example 1, the difference is that the reaction process requires multiple stages of temperature, the first stage is the temperature of the solvent, the target is 70°C, the second stage is an exothermic reaction at 90°C, and the third stage is 120°C Evaporate the solvent, the fourth stage is crystallization at 60°C, set the temperature of high-temperature oil tank 1 to 150°C, and the temperature of low-temperature oil tank 2 to 30°C, the temperature controller 9 is set according to the temperature requirements of each stage, which can realize the rapid control and control of the temperature of each stage switch.

Embodiment 3

[0047] Embodiment 3 is basically the same as Embodiment 1, except that in the independent temperature control circuit of the low-temperature oil tank 2, the actuator is the low-temperature oil tank cooler 204, and the low-temperature oil tank heater 203 is not configured, and the low-temperature oil tank cooler 204 is an air-cooled cycle .

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Abstract

The invention relates to a quick temperature control device and an application thereof. The device comprises a high-temperature oil tank (1) and a matched temperature control loop, a low-temperature oil tank (2) and a matched temperature control loop, an overflow pipe (3) connected to the high-temperature oil tank (1) and the low-temperature oil tank (2), a mixing valve (4) which is connected to the high-temperature oil tank (1) and the low-temperature oil tank (2) through pipelines, a circulation pump (5) connected to an outlet pipeline of the mixing valve (4), and an online mixing device (6). The outlet pipeline is connected to an inlet of a cavity of a controlled object, the controlled object is provided with a matched temperature control loop, and the outlet of the cavity is connectedto the high-temperature oil tank (1) through the pipeline. Compared with the prior art, the device has the advantages of a compact structure, less equipment investment, large operation flexibility, maintenance free, and a long-term operation.

Description

technical field [0001] The invention relates to a petrochemical production device, in particular to a rapid temperature control device and its application. Background technique [0002] Partitioning wall heat exchange is the most commonly used heat exchange method in the production of petroleum, chemical, pharmaceutical and other process industries. It is widely used in unit operations such as distillation and crystallization and heating and heat extraction in chemical reaction processes. In the existing partition heat exchange process, the heat transfer medium entering the jacket (or coil) generally comes from a single heat source. When the controlled object needs to be raised or lowered in temperature, the heat source needs to be raised or lowered first. However, due to the large volume of the heat source , which inevitably leads to a slow change in the temperature of the heat transfer medium, and ultimately leads to a slow change in the controlled temperature. Especially...

Claims

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Application Information

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IPC IPC(8): G05D23/20
Inventor 王修纲吴裕凡曹育才叶晓峰
Owner SHANGHAI RES INST OF CHEM IND