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Preparation device and preparation method of purified carbon dioxide

A carbon dioxide and oxidant technology, applied in chemical instruments and methods, feeding devices, gas generating devices, etc., can solve the problems of high content, no solution, no commercial production capacity, etc., to improve purity and reduce SO2 impurities Effect

Pending Publication Date: 2022-03-22
SUZHOU SITRI ISOTOPE TECH RES INSITITUTE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

considering 14 The half-life of C reaches 5730 years, and it is easy to leak during long-term storage
On the other hand, there is currently no domestic 14 The commercial production capacity of C, therefore obtained from nuclear power plant waste resin 14 C becomes an important means
[0003] In nuclear power plant waste resin, besides carbonate, there is also a small amount of sulfite, which can be decomposed by Ba(OH) 2 Absorption to form BaCO 3 and BaSO 3 The solidified form, BaCO 3 and BaSO 3 After being treated with acid, a chemical reaction occurs to produce CO 2 and SO 2 , the CO produced by the current equipment for producing carbon dioxide 2 Medium SO 2 The content of SO is relatively high, so it is not possible to obtain 2 CO 2 , SO needs to be removed before entering the carbon isotope separation 2 , has operational troubles and requires additional removal of SO 2 Shortcomings
[0004]There is currently no solution for the shortcomings of existing technologies

Method used

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  • Preparation device and preparation method of purified carbon dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] BaCO added to Reaction Vial 2 3 and BaSO 3 12.122 g and 0.151 g respectively, the concentrated sulfuric acid added in the dropping funnel 3 is 120 ml, and the P 2 o 5 is 2.5 g, and the oxidizing agent solution in the oxidizing agent bottle 7 is KMnO 4 solution, and KMnO 4 KMnO in solution 4 is 1.921 g, according to the aforementioned preparation steps to prepare CO 2 , to get CO 2 The purity is 99.98%, and the yield is 97.5%.

Embodiment 2

[0062] Ba added to reaction vial 2 13 CO3 and BaSO 3 15.179 g and 0.187 g respectively, the concentrated sulfuric acid added in the dropping funnel 3 is 150 ml, and the P 2 o 5 is 3.0 g, and the oxidant solution in the oxidant bottle 7 is KMnO 4 solution, and KMnO 4 KMnO in solution 4 It is 2.375 g, prepared according to the aforementioned preparation steps 13 CO 2 ,owned 13 CO 2 The purity is 99.92%, and the yield is 98.3%.

Embodiment 3

[0064] Ba added to reaction vial 2 14 CO 3 and BaSO 3 10.310 g and 0.128 g respectively, the concentrated sulfuric acid added in the dropping funnel 3 is 100 ml, and the P 2 o 5 is 2.8 g, and the oxidant solution in the oxidant bottle 7 is KMnO 4 solution, and KMnO 4 KMnO in solution 4 It is 1.599g, prepared according to the aforementioned preparation steps 14 CO 2 ,owned 14 CO 2 The purity is 99.95%, and the yield is 98%.

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Abstract

The invention belongs to the technical field of gas purification and separation, and particularly discloses a purified carbon dioxide preparation device which comprises a first freezing bottle, a second freezing bottle, a reaction bottle and a dropping funnel, the first freezing bottle is connected with one end of a first vacuum pipe through a second three-way valve and a first three-way valve, and the first vacuum pipe is connected with a vacuum pump; the third end of the second three-way valve is connected with an oxidant bottle which is connected with one end of a second vacuum pipe through a third three-way valve, and the second vacuum pipe is connected with the vacuum pump; the third end of the third three-way valve is connected with a second freezing bottle, the second freezing bottle is connected with one end of a third vacuum pipe through a fourth three-way valve, the third vacuum pipe is connected with the vacuum pump, and the third end of the fourth three-way valve is connected with a product air bag; according to the invention, SO2 can be oxidized, SO2 impurities in CO2 can be reduced, and CO2 with relatively high purity can be prepared.

Description

technical field [0001] The invention belongs to the technical field of gas purification and separation, and in particular relates to a preparation device and method for purifying carbon dioxide. Background technique [0002] Nuclear power plant waste resin contains a large amount of carbonate in the form of 14 C nuclides. At present, such nuclides are generally treated in an environmentally friendly manner by cement solidification and other technologies. considering 14 The half-life of C reaches 5730 years, and it is prone to leakage during long-term storage. On the other hand, there is currently no domestic 14 The commercial production capacity of C, therefore obtained from nuclear power plant waste resin 14 C becomes an important means. [0003] In nuclear power plant waste resin, besides carbonate, there is also a small amount of sulfite, which can be decomposed by Ba(OH) 2 Absorption to form BaCO 3 and BaSO 3 The solidified form, BaCO 3 and BaSO 3 After being ...

Claims

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Application Information

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IPC IPC(8): B01J7/02B01J4/00B01J19/00B01J19/08C01B32/50
CPCB01J7/02B01J19/087B01J19/0006B01J4/001B01J4/008C01B32/50B01J2204/002B01J2204/005
Inventor 徐志红尚宪和邹正宇张鹏李昌达郑奕沈沄李世生熊小红郭玮沈佳宇陈伟高云虎
Owner SUZHOU SITRI ISOTOPE TECH RES INSITITUTE CO LTD