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Multi-thread coil reactor for strong exothermic reaction

An exothermic reaction and multi-thread technology, applied in chemical/physical/physical chemical fixed reactors, chemical instruments and methods, chemical/physical/physical chemical processes, etc., can solve problems such as complex mechanisms and large heat release. Achieve the effect of safety in the reaction process, reduction of online material volume, and enhanced transmission

Pending Publication Date: 2019-08-16
QUZHOU RES INST OF ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Strong exothermic reactions are often accompanied by a large number of side reactions, not only the mechanism is complex, but also the reaction will release a large amount of heat, which is easy to "fly temperature" out of control

Method used

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  • Multi-thread coil reactor for strong exothermic reaction
  • Multi-thread coil reactor for strong exothermic reaction
  • Multi-thread coil reactor for strong exothermic reaction

Examples

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example 1

[0027] Example 1 see attached figure 1 , a multi-threaded coil reactor for strong exothermic reaction mainly includes a multi-threaded coil reactor 1, a heat exchange stirring tank 2, a spherical mixer 3 and a valve; the multi-threaded coil reactor 1 can provide a place for the reaction to occur; the heat exchange stirring tank 2 provides a place for fluid heat exchange, and the heat exchange effect can be enhanced through the stirring paddle; the spherical mixer 3 adopts a spherical reflection structure to realize two or more streams Rapid pre-mixing of fluids; the valve can realize functions such as exhaust and emergency discharge.

[0028] as attached figure 2 As shown, the core of a multi-threaded coil reactor for strongly exothermic reactions is the multi-threaded coil reactor 1 . According to different reaction characteristics, different structural parameters can be selected: the number of threads is 2-10, the outer diameter is 10-100mm, the groove depth is 2-20mm, an...

no. 2 example

[0034] Use a multi-threaded coil reactor for the nitration reaction of energetic compounds: the reaction is a strong exothermic reaction, and a stirred tank is used for heat exchange; when the reactor uses a four-thread coil, the outer diameter is 16mm and the inner diameter is 9mm, the lead is 35mm, and the length of the tube is 5m; the coil diameter is 400mm, the pitch is 20mm, and the number of turns is 5 turns; the feed temperature of the reaction solution is -10°C, and the temperature of the heat exchange carrier in the stirring tank is -16°C. Under this operating condition, the reaction time was controlled at 15 minutes. The conversion rate of reactants can reach more than 90%, and the product yield is about 60%. Compared with the 12mm circular tube reactor with the same cross-sectional area, the yield increased by 5 percentage points.

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Abstract

The invention discloses a multi-thread coil reactor for a strong exothermic reaction, and particularly relates to a liquid-phase strong exothermic reaction accompanied by gas byproducts. The reactor mainly comprises a multi-thread coil reactor, a heat exchange stirring kettle device and a spherical surface mixer; reactants are premixed in the spherical surface mixer and enter the coil reactor fromtop to bottom in a natural flowing mode for a reaction; the reaction heat can be quickly removed by adjusting the cold fluid flow of the jacket of the stirring kettle and the rotating speed of the stirring paddle, so that the temperature gradient in the kettle is reduced. The coil reactor is provided with a multi-thread wall surface structure which can change the flow pattern of fluids inside andoutside the coil reactor, enhance heat and mass transfer and improve the safety of the reaction process; especially when the flow velocity is low, the reactor can alleviate the problems of low turbulence degree, insufficient mixing, poor heat and mass transfer effect and the like.

Description

technical field [0001] The invention designs a multi-threaded coil reactor for strong exothermic reaction, especially a multi-threaded coil reactor for strong exothermic reaction with gas by-product and liquid phase. Background technique [0002] Strong exothermic reactions are often accompanied by a large number of side reactions, not only the mechanism is complex, but also the reaction will release a large amount of heat, which is easy to "fly temperature" out of control. The reaction system often contains a large number of unstable compounds, which are flammable and explosive, and a large number of bubbles will be generated after decomposition. Therefore, it is necessary to improve the heat transfer efficiency, control the concentration of reactants, and prevent the reaction from being too intense. As one of the core equipment in industrial production, the tubular reactor has a series of advantages such as simple structure, large specific surface area, high controllabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/24
CPCB01J19/243B01J19/0013B01J2219/00094
Inventor 董振宇何潮洪戴立言刘仲谦朱海崔兴于飞吴可君
Owner QUZHOU RES INST OF ZHEJIANG UNIV
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