Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A start-up method for boron isotope production process based on anisole-boron trifluoride

A technology of boron trifluoride and anisole, which is applied in the field of isotope separation, can solve the problems of not being able to obtain qualified products of boron-11 and low yield of boron-10 at the same time, so as to shorten the start-up time, improve separation efficiency, and start-up time short effect

Active Publication Date: 2016-05-18
浙江创世雷博科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zhang Weijiang of Tianjin University simulated the start-up process with a computer, and proposed a start-up strategy of "cascade feeding, no discharge at the bottom of the tower, variable gas velocity, and maintaining impurity removal". However, the yield of boron-10 in this method is low, and the boron -11 is discharged as waste, and boron-11 qualified products cannot be obtained at the same time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A start-up method for boron isotope production process based on anisole-boron trifluoride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The raw materials used are boron trifluoride gas (natural abundance, that is, boron-10 abundance of 19.3%) and anisole liquid, and the molar ratio of the boron trifluoride gas and anisole liquid is 1: 1;

[0023] With reference to the drawings, the equipment used includes complexing tower 1, first exchange rectification tower 2, second exchange rectification tower 3, complex stripping tower 4, complex cracking tower 5, anisole rectification Impurity removal tower 6, anisole drying tower 7, cold box 8;

[0024] The method is: the system is purged and replaced with nitrogen without residual moisture. Set the system pressure to 5KpaG or 10KpaG or 20KpaG or 35KpaG or 50KpaG or 70KpaG or 85KpaG, the appropriate pressure is 10KpaG, and the system is pressurized with nitrogen. All storage tanks are sealed and protected with low pressure nitrogen and positive pressure to prevent the ingress of moist air.

[0025] Purify the raw material boron trifluoride gas and anisole liquid sepa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a construction method based on a technology for producing boron isotope by anisole-boron trifluoride, which belongs to the field of isotope separation, and mainly aims at solving the problems such as low yield of boron-10 and incapability of obtaining qualified boron-11 products at the same time in the existing construction method based on the technology for producing boron isotope by anisole-boron trifluoride. The method disclosed by the invention comprises the following steps: continuously purifying raw materials, namely boron trifluoride gas and an anisole liquid, as well as an anisole-boron trifluoride complex before entering a cracking tower, nitrogen gas coming out of the top of a complex gas stripping tower, boron trifluoride gas after cracking, and gas coming out of the top of a first exchange rectifying tower; adding the purified nitrogen gas into a second exchange rectifying tower; adding fresh boron trifluoride gas into the first exchange rectifying tower, wherein boron-10 is not discharged out from the top of the cracking tower and boron-11 is not discharged out from the top of a complexation tower; and after performing system rectification balance for 72-148 hours, converting to the normal production mode. The method has the advantage that the two qualified products, namely boron trifluoride-10 and boron trifluoride-11 can be produced at the same time.

Description

Technical field: [0001] The invention belongs to the field of isotope separation, and specifically relates to a method for starting a production process of anisole-boron trifluoride complex chemical reaction rectification separation of boron isotope. Background technique: [0002] There are two stable isotopes of boron, boron-10 and boron-11, with natural abundances of 19.3% and 80.7%, respectively. Boron-10 has a very strong ability to absorb neutrons, and is increasingly used in nuclear power, modern industry, military equipment, and medicine. Boron-11 is a potential thermonuclear reaction material. The steel with boron-11 can greatly improve the performance of high temperature resistance and radiation resistance. At present, the high-abundance boron isotope products used in my country mainly rely on imports. There are three main methods of industrial production of boron isotopes in the world: diethyl ether-boron trifluoride vacuum exchange distillation method, methyl ether-b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01D59/50C01B35/06
Inventor 刘小秦王宏时天成
Owner 浙江创世雷博科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com