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Reaction device for strengthened heat transfer and continuous production method with strong exothermic reaction

A reaction device, a technology for enhancing heat transfer, applied in chemical instruments and methods, chemical/physical/physical-chemical stationary reactors, chemical industry, etc., can solve problems such as poor heat transfer effect, reduce corrosion and improve Safety and productivity, longevity effect

Active Publication Date: 2017-05-31
青岛长荣化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of the poor heat transfer effect of the above-mentioned reaction devices in the prior art, and provide a device for enhancing heat transfer, which is suitable for continuous synthesis of rapid and strong exothermic reactions, and can use a cycle at room temperature or near room temperature Water replaces low-temperature frozen brine, saving energy and reducing consumption, reducing corrosion and prolonging the service life of equipment

Method used

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  • Reaction device for strengthened heat transfer and continuous production method with strong exothermic reaction

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Effect test

Embodiment 1

[0031] figure 1 A reaction device for enhancing heat transfer is provided, which includes a reaction kettle 1 , a crude product tank 2 , a cooler 3 and a circulation pump 4 .

[0032] Reactor 1 is a mechanical stirring container with an oval head and a detachable cover specified in HG / T 3109-2009, with a volume of 3000L. A material outlet 12 is provided at the top of the reactor 1, an inlet 36 for raw material A and an inlet 37 for raw material B are arranged at the bottom, and a circulation inlet 38 is provided between the two raw material inlets. The reactor 1 is provided with a jacket 9 on the outside, and a stirrer 10 , a coil 11 and a thermal resistance thermometer 16 inside. The stirrer 10 includes a stirring shaft, on which there are multiple layers of radial stirring blades. The heat exchange area of ​​the jacket 9 is 10m2, the heat exchange area of ​​the coil is 30m2, and the measuring range of the thermal resistance thermometer 16 is -20~100°C.

[0033] Reactor 1 ...

Embodiment 2

[0046] This embodiment provides a continuous production method of a strong exothermic reaction. Taking phosphorus trichloride and methanol to synthesize phosphite as an example, the specific operation of the method is described in detail. The device used is referred to in Example 1.

[0047] (1) Preparation: close the vent valve 32, purge valve 5 and exhaust valve 22, open the pressure gauge valve 21, the circulation valve 23 before the pump, the circulation outlet valve 26 and the crude product outlet valve 30, open the jacket inlet valve 8, clamp The sleeve outlet valve 15, the coil inlet valve 13, the coil outlet valve 14, the shell side inlet valve 25 and the shell side outlet valve 24 pass circulating water into the jacket 9, the coil tube 11 and the cooler 3;

[0048] (2) Operation: start the agitator 10, open the raw material A inlet valve 6 and the raw material B inlet valve 18, and continuously add phosphorus trichloride and methanol to the reaction kettle 1 through th...

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Abstract

The invention relates to the technical field of chemical engineering equipment, and in particular to an exothermic reaction device. The exothermic reaction device comprises a reaction kettle, a crude product tank, a cooler and a circulating pump, wherein a material outlet formed in the top part of the reaction kettle is connected with a crude product inlet formed in the crude product tank; a material outlet formed in the bottom part of the crude product tank is connected with an inlet of a circulating material passage of the cooler; an outlet of the circulating material passage is connected with an inlet of the circulating pump; an outlet of the circulating pump is connected with a circulating inlet in the bottom part of the reaction kettle; an after-pump circulating valve is arranged between the circulating pump and the circulating inlet, and a crude product external circulating passage is formed. A part of a crude product is utilized for carrying out external circulation strengthened heat transfer, the external circulation strengthened heat transfer is not limited by a space of the reaction kettle, the heat exchange area of the cooler can be increased at will, the heat transfer efficiency is increased, a reaction temperature can be easily controlled, and the process safety and the production capacity are increased; circulating water is used as a refrigerant for replacing traditional calcium chloride brine, so that the corrosivity is greatly reduced, common carbon steel processing and manufacturing equipment can be used, the investment cost is reduced, reaction heat is transferred by using circulation of the crude product, and impurities cannot be introduced in.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to an exothermic reaction device for continuous synthesis of rapid and strong exothermic reactions. Background technique [0002] In chemical production, many reaction processes are instantaneous and strongly exothermic, such as alcoholysis, hydrolysis or aminolysis of acid chlorides such as phosphorus trichloride and phosphorus pentachloride; dilution of concentrated sulfuric acid, preparation of ammonia water, etc. For fast and strong exothermic reactions, controlling the reaction temperature is very important to improve the reaction selectivity and product yield. How to control the temperature is a difficult problem. If the reaction heat cannot be removed in time, it will inevitably cause the temperature of the material to get out of control and seriously It can seriously affect product quality and yield, and may even cause safety accidents such as explosions and fires...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18C07F9/142
CPCB01J19/18B01J19/1881B01J2219/00087C07F9/142Y02P20/10
Inventor 韩明序韩忠山杨松慧
Owner 青岛长荣化工科技有限公司
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