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A kind of supergravity channel rotating bed for rapid heat exchange and application method thereof

A rotating bed and supergravity technology, applied in chemical instruments and methods, chemical/physical/physicochemical fixed reactors, climate sustainability, etc., can solve problems such as inability to exchange in time, and achieve contact avoidance and enhanced exchange Thermal, low energy consumption effect

Active Publication Date: 2022-07-08
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for reactions that produce severe heat changes, it avoids the potential harm caused by the inability to exchange internal reaction heat in time in traditional structures

Method used

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  • A kind of supergravity channel rotating bed for rapid heat exchange and application method thereof
  • A kind of supergravity channel rotating bed for rapid heat exchange and application method thereof
  • A kind of supergravity channel rotating bed for rapid heat exchange and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100]The isooctanol nitration reaction is carried out by adopting the supergravity channel rotating bed of the present invention. The experimental conditions are as follows: the rotating bed speed of the supergravity channel is 200-2000r / min, the number of stainless steel channels is two layers, the number of fixed straight circular channels in each layer is 20, the channel diameter is 5mm, and the temperature of the heat exchange medium water is maintained at 10 ℃ ; 10 mesh hydrophobic wire mesh is fixed on the heat exchange medium redistribution plate, the volume ratio of nitric acid and sulfuric acid is 1:1, the volume flow rate of nitric-sulfur mixed acid is 40L / h, and the volume flow rate of isooctanol is 30L / h. The two liquids are respectively transported to the two inlets of the rotating bed reactor through a constant flow pump that can precisely control the flow. The liquid product flows out from the outlet at the bottom of the outer cavity of the rotating bed into th...

Embodiment 2

[0102] Adjust the device in Example 1, and adjust the straight circular rotating channel structure to be an arc or broken line type, such as image 3 or Figure 4 As shown in the figure, the contact time of the material in the channel can be prolonged, and it is found that the purity and yield of the product isooctyl nitrate are improved to varying degrees, and the effect is fold line > arc shape. At a rotational speed of 1600 r / min, the zigzag channel structure makes the purity and yield of the product isooctyl nitrate 92% and 90%, respectively.

Embodiment 3

[0104] On the basis of Example 1, the heat exchange medium redistribution plate is changed to an annular plate, which is divided into 3 regions from the inside to the outside, and the opening area of ​​each region is 80%, 60% and 40% respectively, and the annular plate is from the inside to the outside. The inclination angle is 45°, which strengthens the redistribution of the heat exchange medium on the channel surface. Under the rotating speed of 1200r / min, the purity and yield of the product isooctyl nitrate were 94% and 93%, respectively.

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Abstract

The invention discloses a supergravity channel rotating bed for rapid heat exchange, comprising a motor, a casing, a premixer, a rotor, a gas outlet, a gas inlet, a material liquid inlet, a material liquid outlet and a heat exchange system; the invention The supergravity channel rotating bed can realize the integration of heat exchange and reaction inside the rotating bed. Especially for the reaction that produces a violent heat change, the potential harm caused by the inability to exchange the heat of the internal reaction in time in the traditional structure is avoided. The heat required for the reaction can be effectively removed or supplied by adjusting the structure of the rotating channel and the structure of the heat exchange system to match the different rotational speeds of the rotating bed. The device and the method are of great significance for the reaction accompanied by severe heat changes inside the hypergravity reactor.

Description

technical field [0001] The invention relates to a supergravity channel rotating bed and its application. More specifically, it relates to a supergravity channel rotating bed for rapid heat exchange and an application method thereof. Background technique [0002] Many chemical reactions are often accompanied by changes in heat, some are endothermic reactions, and some are exothermic reactions. In the process of these reactions, once the temperature is not well controlled, it will cause a series of serious consequences. Especially in the process of strongly exothermic reaction, it is generally difficult to control the temperature of the reaction, and it is also difficult to achieve efficient and rapid mixing. For strongly exothermic reaction processes, dropwise addition is used in many reactors. The entire process cannot achieve rapid and uniform mixing of materials, which in turn affects the progress of the reaction, often accompanied by the occurrence of side reactions, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/18B01J19/00
CPCB01J19/0013B01J19/18Y02P20/10
Inventor 初广文李文思刘威罗勇邹海魁张亮亮陈建峰
Owner BEIJING UNIV OF CHEM TECH
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