Long-chain dicarboxylic acid refining device

A long-chain dibasic acid and refining device technology, which is applied in the direction of evaporator adjustment/control, separation/purification of carboxylic acid compounds, separation methods, etc., and can solve problems such as difficult crystal forms, poor uniformity, and poor washing effect , to achieve the effect of uniform product particle size, increase product yield, and large product particle size

CN114210085APending Publication Date: 2022-03-22青岛智库生物技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-03-22

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Abstract

The invention provides a long-chain dicarboxylic acid refining device. The long-chain dicarboxylic acid refining device comprises a crystallization / crystal washing kettle, a hollow main shaft, a gas ejector pipe, a flow guide inner cylinder, a heat conduction pipe and a driving device, wherein the hollow main shaft, the gas ejector pipe and the flow guide inner cylinder are arranged in the crystallization / crystal washing kettle. And the heat conduction pipe is arranged around the outer side of the crystallization / crystal washing kettle. A feeding hole and a tail gas hole are formed in the upper part or the top of the crystallization / crystal washing kettle. And the lower part or the bottom of the crystallization / crystal washing kettle is provided with a discharge hole. And the hollow main shaft extends into the flow guide inner cylinder. The gas ejector pipe is located in the flow guide inner cylinder. A gas transmission gas inlet and a gas transmission gas outlet are formed in the hollow main shaft. An air injection inlet and an air injection hole are formed in the air injection pipe. The air spraying pipe is connected with the hollow main shaft, and the air spraying air inlet is communicated with the air conveying air outlet. The driving device is connected with the hollow spindle. When the long-chain dicarboxylic acid refining device provided by the invention is used for crystallizing or washing crystals, the obtained product is larger and uniform in particle size, the product yield is high, and the production process is energy-saving and consumption-reducing.
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Description

technical field

[0001] The invention relates to a long-chain dibasic acid refining device, in particular to a long-chain dibasic acid refining device for long-chain dibasic acid crystallization and crystal washing, and belongs to the technical field of production devices in the fine chemical industry. Background technique

[0002] Long-chain dibasic acid refining equipment, that is, equipment that realizes long-chain dibasic acid refining and purification operations by crystallization or washing crystals with solvents or water. There are many types of long-chain dibasic acid refining devices, which can be divided into evaporation crystallizer and cooling crystallizer according to the method of obtaining supersaturated state of solution. The cooling crystallizer is a kind of equipment that depends on reducing the temperature of the material, so that the material will produce supersaturation, and finally promote the crystallization of the material.

[0003] The crystallizatio...

Examples

Embodiment 1

[0058] Such as figure 1 As shown, a long-chain dibasic acid refining device, the long-chain dibasic acid refining device A includes a crystallization / washing kettle 1, a hollow main shaft 2, an air injection pipe 3, a diversion inner cylinder 4, a heat pipe 5, and a driving device 6. Wherein: the hollow main shaft 2, the jet pipe 3, and the diversion inner cylinder 4 are arranged in the crystallization / crystal washing kettle 1. The heat pipe 5 is arranged around the outside of the crystallization / cleaning tank 1 . The upper part or the top of the crystallization / cleaning tank 1 is provided with a feed port 101 and a tail gas port 103 . The lower part or bottom of the crystallization / cleaning tank 1 is provided with a discharge port 102 . The hollow main shaft 2 extends into the flow guiding inner cylinder 4 . The air jet pipe 3 is located in the flow guiding inner cylinder 4 . The hollow main shaft 2 is provided with an air inlet 201 and an air outlet 202 . The jet pipe ...

Embodiment 2

[0060] Repeat Example 1, except that the crystallization / washing tank 1 is also provided with an air outlet baffle 7. The gas outlet baffle 7 is arranged in the crystallization / washing tank 1 and is located below the tail gas port 103 .

Embodiment 3

[0062] Example 1 was repeated, except that the crystallization / washing tank 1 also included a wall vibrator 8 . The wall vibrator 8 is arranged on the inner wall or the outer wall of the crystallization / cleaning tank 1 , and is located at the position of the discharge port 102 .