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

Device for continuously destructing radiative waste organic solvent

An organic solvent and radioactive waste technology, which is applied in the field of devices for continuously destroying radioactive waste organic solvents, can solve the problems of low current efficiency, small processing capacity, and inability to meet the needs of large-scale industrial processing, and achieves high electrolysis efficiency and short electrolysis time. Effect

Active Publication Date: 2014-10-22
CHINA INSTITUTE OF ATOMIC ENERGY
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also the following disadvantages: the electrochemical destruction process is oxidative decomposition and destruction under the sufficient mixing of radioactive waste organic solvents and nitric acid aqueous solution containing oxidizing media, so it is difficult to achieve single-phase discharge in the anode chamber, and then continuous destruction cannot be achieved
At present, all laboratories adopt batch processing method, which takes a long time to completely decompose and destroy, has small processing capacity, and low current efficiency, which cannot meet the needs of large-scale industrial processing.

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
  • Device for continuously destructing radiative waste organic solvent
  • Device for continuously destructing radiative waste organic solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A device for continuously destroying radioactive waste organic solvents, the device includes a constant temperature tank 1 with a temperature setting of 55°C and an electrochemical oxidation destruction container located inside the constant temperature tank 1, the container is mainly composed of an anode chamber with a sealed cover on the top 8. The cathode chamber 15 and the clarification chamber 2 are composed, wherein the volume ratio of the cathode chamber 15 and the clarification chamber 2 is 1:1, and the volume ratio of the anode chamber 8 and the cathode chamber 15 is 4:1.

[0039] The inside of the anode chamber 8 is equipped with a stirrer 9, the stirrer 9, the oxidizing medium adding pipe 10, the tail gas outlet pipe of the anode chamber and the anode electrode 3 all enter the anode chamber 8 through the hole on the sealing cover, wherein the anode electrode 3 is a platinum electrode; The interior of the anode chamber 8 is equipped with Ag + HNO 3 The solutio...

Embodiment 2

[0047] Different from Example 1, the volume ratio of the anode chamber and the cathode chamber is 10:1, containing Ag + HNO 3 The solution acts as an oxidation medium, where Ag + The concentration is 0.5mol / L, HNO 3 The concentration of the solution is 7mol / L, the concentration of the nitric acid solution in the cathode chamber is 5mol / L, and the temperature of the constant temperature bath is 65°C. The current density is 0.5A / cm 2 , the voltage is 10V.

Embodiment 3

[0049] Different from Example 1, the volume ratio of the anode chamber and the cathode chamber is 8:1, containing Ag + HNO 3 The solution acts as an oxidation medium, where Ag + The concentration is 0.8mol / L, HNO 3 The concentration of the nitric acid solution in the cathode chamber is 8mol / L, the concentration of the nitric acid solution in the cathode chamber is 7mol / L, and the temperature of the constant temperature bath is 60°C. The current density is 0.6A / cm 2 , the voltage is 15V.

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 belongs to the technical field of the spent fuel reprocessing and discloses a device for continuously destructing a radiative waste organic solvent. The device comprises a constant-temperature tank and an electrochemical oxidation destruction container located in the constant-temperature tank; the container is mainly composed of an anode chamber, a cathode chamber and a clarifying chamber; the radiative waste organic solvent goes into the clarifying chamber by use of a waste organic solvent feeding pipe; when the solvent is higher than a separator between the clarifying chamber and the anode chamber, the solvent goes into the anode chamber. The non-destructed waste organic solvent is mixed with water into a mixed solution which goes into the clarifying chamber by use of a liquid flow channel between the anode chamber and the clarifying chamber, the separation of the organic phase and the water phase is realized in the clarifying chamber, and the water phase located below contains redionuclides and is charged by use of a water phase drainage pipe at a certain rate; besides, the organic phase located at top is mixed with the waste organic solvent added by use of the waste organic solvent feeding pipe and then the mixture flows into the anode chamber by use of the upper channel of the separator. The device is capable of meeting the requirements on improving the current effectively and realizing continuous destruction of waste organic solvents.

Description

technical field [0001] The invention belongs to the technical field of spent fuel reprocessing, and in particular relates to a device for continuously destroying radioactive waste organic solvents. Background technique [0002] The biggest feature of the spent fuel reprocessing process is that the processed fuel has strong α, β, and γ radioactivity. In the process of extraction, separation and purification, the organic solvent (such as 30% TBP / kerosene) will be subject to strong radiation and chemical action of different reagents, causing it to undergo radiolysis and generate radiolysis products, which will cause changes in the performance of the extraction agent and result in the recovery of uranium and plutonium. loss. Considering economical factors and waste minimization, the used organic solvents are usually recycled after acid-base washing until their extraction performance deteriorates to the point that they can no longer meet the process requirements, and then they a...

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
IPC IPC(8): G21F9/06
Inventor 李辉波苏哲袁洁琼张磊
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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