Unlock instant, AI-driven research and patent intelligence for your innovation.

Phase separation method and device, and spent fuel reprocessing plant extraction separation method and system

A technology of phase separation device and spent fuel, which is applied in the fields of reactor fuel elements, nuclear power generation, climate sustainability, etc., can solve problems affecting operation stability, decrease in purification capacity, enrichment, etc., to ensure operation stability and safety. performance, preventing the degradation of purification ability, and simplifying the structure

Pending Publication Date: 2022-04-22
CHINA NUCLEAR POWER ENG CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the long-term operation, the interface dirt will continue to form and accumulate, and may enter the plate section, so that the pulse extraction column cannot continue to operate stably, so that the purification capacity in the later stage of operation will drop sharply. It takes a lot of manpower and reagents, and it may still not meet the maintenance requirements, thus affecting the operation stability
What's more serious is that fissile nuclides are easy to enrich at the interface dirt, and there is a critical risk, which affects the safety of operation

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
  • Phase separation method and device, and spent fuel reprocessing plant extraction separation method and system
  • Phase separation method and device, and spent fuel reprocessing plant extraction separation method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment discloses a phase separation method, comprising:

[0030] The mixed phase of the organic phase and the water phase obtained after extraction in the extraction and separation process of the spent fuel reprocessing plant is extracted, and the mixed phase is decanted to separate the organic phase and the water phase.

[0031] Specifically, as figure 1 As shown, the decanting operation specifically includes: passing the mixed phase into the decanter 2, because the density of the organic phase is small, the density of the water phase is large, and the two are immiscible, and finally the mixed phase is passed into the decanter 2 Clarification and phase separation in the middle, the organic phase is obtained at the top of the decanter 2, the water phase is obtained at the bottom of the decanter 2, and the first outlet 11 is set at the top of the decanter 2, and the first outlet 11 is set at the bottom of the decanter 2 Two outlets 12, the second outlet 12 is ...

Embodiment 2

[0037] This embodiment discloses a phase separation device, which includes a decanting unit and a conveying mechanism. The decanting unit is connected to the extraction and separation equipment in the spent fuel reprocessing plant through the conveying mechanism, wherein the conveying mechanism is used to transfer the extraction process in the extraction and separation equipment to The obtained mixed phase of the organic phase and the aqueous phase is pumped into the decanting unit, and the decanting unit is used for decanting the mixed phase to separate the organic phase and the aqueous phase.

[0038] In some embodiments, such as figure 1 As shown, the decanting unit includes a decanter 2, a transfer line 3, and a steam jet pump (not shown in the figure). The top of the decanter 2 is provided with an inlet, its top is provided with a first outlet 11, and its bottom is provided with a second outlet 12, wherein the inlet of the decanter 2 communicates with the outlet of the c...

Embodiment 3

[0049] This embodiment discloses an extraction and separation method for a spent fuel reprocessing plant, including:

[0050] Feed liquid (for example, the uranium-containing plutonium feed liquid in the spent fuel reprocessing plant) is introduced from the upper end of the extraction and separation equipment, and the extraction agent (for example, 30% TBP-kerosene) is introduced from the lower end of the extraction and separation equipment, so that The feed liquid and the extractant are reversely contacted and mass-transferred in the extraction and separation equipment, the extracted organic phase is obtained at the upper part of the extraction and separation equipment, and the mixed phase of the extracted organic phase and the aqueous phase is obtained at the lower part of the extraction and separation equipment;

[0051] The phase separation method described in Example 1 is used to process the mixed phase at the bottom of the extraction column plate section in the extraction...

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 phase separation method and device, and the phase separation method comprises the steps: extracting a mixed phase of an organic phase and a water phase obtained after extraction in an extraction separation technology of a spent fuel reprocessing plant, carrying out decantation operation on the mixed phase, and separating to obtain the organic phase and the water phase; the phase separation device comprises a decantation unit and a conveying mechanism, the decantation unit is connected with extraction separation equipment in the spent fuel reprocessing plant through the conveying mechanism, the conveying mechanism is used for extracting a mixed phase of an organic phase and a water phase in the extraction separation equipment into the decantation unit, and the decantation unit is used for carrying out decantation operation on the mixed phase. And separating to obtain an organic phase and a water phase. The invention further discloses a spent fuel reprocessing plant extraction separation method and system. According to the invention, interface dirt can be prevented from being generated at a split-phase interface in the extraction and separation equipment, and the operation stability and safety of the extraction and separation equipment are ensured.

Description

technical field [0001] The invention belongs to the field of nuclear technology, and specifically relates to a phase separation method and device, an extraction and separation method for a spent fuel reprocessing plant including the phase separation method, and an extraction and separation system for a spent fuel reprocessing plant including a phase separation device. Background technique [0002] Extraction and separation technology is often used in the main process of Purex, and the extraction column is the key equipment for extraction and separation. Traditional extraction columns are generally pulsed extraction columns (such as figure 2 As shown), it consists of an upper expansion section, a lower expansion section and a plate section, and the organic phase and the aqueous phase are separated in the expansion section. Due to the high radioactive concentration of the feed liquid, during the two-phase contact mass transfer process, the degradation products of the organic ...

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): G21C19/42C22B60/02C22B60/04C22B7/00
CPCG21C19/42C22B60/026C22B60/04C22B7/006Y02E30/30Y02P10/20
Inventor 逯迎春侯媛媛陈勇李思凡蔡梦琦曹鑫宋晓鹏吴志强
Owner CHINA NUCLEAR POWER ENG CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com