Supergravity channel rotating bed for rapid heat exchange and application method of super-gravity channel rotating bed

A rotating bed, hypergravity technology, applied in chemical instruments and methods, chemical/physical/physical-chemical stationary reactors, climate sustainability, etc., which can solve problems such as inability to exchange in time

Active Publication Date: 2021-09-10
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially for reactions that produce severe heat changes, it avoids the potential harm...

Method used

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  • Supergravity channel rotating bed for rapid heat exchange and application method of super-gravity channel rotating bed
  • Supergravity channel rotating bed for rapid heat exchange and application method of super-gravity channel rotating bed
  • Supergravity channel rotating bed for rapid heat exchange and application method of super-gravity channel rotating bed

Examples

Experimental program
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Effect test

Embodiment 1

[0100]The iso-octanol nitration reaction is carried out by adopting the high-gravity channel rotating bed of the present invention. The experimental conditions are as follows: the rotation speed of the high-gravity channel rotating bed is 200-2000r / min, the number of stainless steel channel layers is two, 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°C ; Fix 10 purpose hydrophobic screens 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 acid mixed acid is 40L / h, and the volume flow rate of isooctanol is 30L / h. The two liquids are sent to the two inlets of the rotary bed reactor through constant flow pumps that can precisely control the flow rate, and the two liquids are mixed in the mixer before the inlet of each layer of rotary channels, and then sent into the rotar...

Embodiment 2

[0102] The device in embodiment 1 is adjusted, and the straight circular rotating channel structure is adjusted to be an arc or a broken line, such as image 3 or Figure 4 As shown, the contact time of the material in the channel can be prolonged, and the purity and yield of the product isooctyl nitrate are found to be improved to varying degrees, and the effect is broken line>arc. At a rotating speed of 1600r / 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 three areas from the inside to the outside, and the opening area of ​​each area is 80%, 60% and 40%, respectively, and the ring 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 the yield of product isooctyl nitrate are respectively 94% and 93%.

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Abstract

The invention discloses a supergravity channel rotating bed for rapid heat exchange. The supergravity channel rotating bed comprises a motor, a shell, a premixer, a rotor, a gas outlet, a gas inlet, a material liquid inlet, a material liquid outlet and a heat exchange system. The supergravity channel rotating bed can realize integration of heat exchange and reaction in the rotating bed. Especially for the reaction with severe heat change, potential hazards caused by the fact that internal reaction heat cannot be exchanged in time in a traditional structure are avoided. The structure of the rotating channel and the structure of the heat exchange system are adjusted, and different rotating speeds of the rotating bed are matched, so that heat required by reaction can be effectively removed or supplied. The device and the method have important significance on the reaction along with the violent heat change in the supergravity reactor.

Description

technical field [0001] The invention relates to a high-gravity channel rotary bed and its application. More specifically, it relates to a high-gravity channel rotating bed for rapid heat exchange and an application method thereof. Background technique [0002] The process of many chemical reactions is often accompanied by changes in heat, some are endothermic reactions, some are exothermic reactions. Once the temperature is not well controlled during these reactions, a series of serious consequences will be caused. Especially in the process of strong 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 the strong exothermic reaction process, dropwise feeding is adopted in many reactors. The whole process cannot achieve rapid and uniform mixing of materials, thereby affecting the progress of the reaction, often accompanied by the occurrence of side reactions, affecting...

Claims

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Application Information

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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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