Method and device for separately producing enriched boron-10 (10B) by using multiple serial towers

A technology of enrichment and multiple towers, applied in the field of separation, can solve the problems of difficult industrial production, many sub-processes, and long process flow, etc.

Inactive Publication Date: 2012-11-14
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the long process flow, many sub-processes, and complicated operations, industrial production is difficult

Method used

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  • Method and device for separately producing enriched boron-10 (10B) by using multiple serial towers
  • Method and device for separately producing enriched boron-10 (10B) by using multiple serial towers

Examples

Experimental program
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Effect test

example 1

[0024] Example 1: The boron trifluoride raw material gas (1) enters the complexation tower from the bottom, and forms a 1:1 boron trifluoride·anisole ether compound with the excess anisole flowing down from the top of the tower. The complexation reaction of boron trifluoride and anisole complexing agent is an exothermic reversible reaction, and the reaction will naturally proceed in the direction of complexation when the temperature is lowered to 10-15°C. When the complex is heated to 140-150°C, it will be decomposed into boron trifluoride and anisole complexing agent. In the chemical exchange system at 15-20°C, the cracked boron trifluoride gas rises from the bottom of the exchange tower, and contacts with the boron trifluoride-anisole complex descending from the top of the tower in countercurrent, and an exchange reaction occurs. Reciprocate, and finally get more than 95% enrichment at the bottom of the exchange tower 10 Product B.

example 2

[0025]Example 2: The boron trifluoride raw material gas enters the complexation tower from the bottom, and forms a 1:1 boron trifluoride·anisole ether compound with the excess anisole flowing down from the top of the tower. The complexation reaction between boron trifluoride and anisole complexing agent is an exothermic reversible reaction. When the temperature is lowered to 15-20°C, the reaction will naturally proceed in the direction of complexation. When the complex is heated to 150-160°C, it will be decomposed into boron trifluoride and anisole complexing agent. In the chemical exchange system at 20-25°C, the cracked boron trifluoride gas rises from the bottom of the exchange tower, and contacts with the boron trifluoride-anisole complex descending from the top of the tower in countercurrent, and an exchange reaction occurs. Reciprocate, and finally get more than 95% enrichment at the bottom of the exchange tower 10 Product B.

example 3

[0026] Example 3: The boron trifluoride raw material gas enters the complexing tower from the bottom, and forms a 1:1 boron trifluoride·anisole ether compound with the excess anisole flowing down from the top of the tower. The complexation reaction of boron trifluoride and anisole complexing agent is an exothermic reversible reaction, and the temperature is lowered to 20-25°C, and the reaction naturally proceeds in the direction of complexation. When the complex is heated to 160-170°C, it will be decomposed into boron trifluoride and anisole complexing agent. In the chemical exchange system at 25-30°C, the cracked boron trifluoride gas rises from the bottom of the exchange tower, and contacts with the boron trifluoride-anisole complex descending from the top of the tower in countercurrent, and an exchange reaction occurs. Reciprocate, and finally get more than 95% enrichment at the bottom of the exchange tower 10 Product B.

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Abstract

The invention relates to a method and device for separately producing enriched boron-10 (10B) by using multiple serial towers. In the method, enriched production of 10B is realized through multiple chemical exchange towers which are connected in series. The production device mainly comprises a complexing tower, serial chemical exchange towers, and a cracking tower, wherein the tower top of the cracking tower is provided with a condenser; the tower bottom of the cracking tower is provided with a heating kettle; and continuous flow of a liquid phase is realized among the complexing tower, each chemical exchange tower and the cracking tower through a pump. A liquid phase sprayed out of the complexing tower is pumped to the top of the first chemical exchange tower through a pump, and is pumped to the top of the second chemical exchange tower after flowing out of the bottom of the first chemical exchange tower till the liquid phase flowing out of the bottom of the last exchange tower is pumped to the top of the cracking tower; and a liquid phase flowing out of the bottom of the cracking tower is subjected to heat exchange through a heat exchanger, and is pumped to the top of the complexing tower through a pump, so that circular flow of the liquid phase among serial towers is formed. Due to the adoption of the method and the device, production of enriched 10B is realized through multiple serial towers, the abundance of the boron-10 is over 95 percent, and the abundance requirement of an enriched 10B product in the fields of nuclear power, military industry, aerospace and the like is met.

Description

technical field [0001] The invention relates to the field of separation technology, especially isotope separation technology, which is applicable to the fields of national defense, military industry, aerospace, nuclear industry, etc. Set boron-10 ( 10 B) The production process. Background technique [0002] The stable isotope boron-10 ( 10 B) Because of its unique neutron absorption characteristics, it is widely used in modern nuclear industry, military equipment and medicine. enrichment 10 B products include boron-10 acid with different abundance requirements, boron-10 powder, boron carbide, boron nitride and other products, with a long industrial chain and a wide range of product applications, especially playing an important role in alleviating the global petrochemical energy shortage. effect. The application of this kind of products in the field of nuclear energy makes it possible to widely develop and apply economical, safe and clean nuclear energy resources. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D59/50C01B35/06
Inventor 徐姣张卫江
Owner TIANJIN UNIV
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