EP1218890A2 - Procede de recyclage de liquides ioniques - Google Patents

Procede de recyclage de liquides ioniques

Info

Publication number
EP1218890A2
EP1218890A2 EP20000958764 EP00958764A EP1218890A2 EP 1218890 A2 EP1218890 A2 EP 1218890A2 EP 20000958764 EP20000958764 EP 20000958764 EP 00958764 A EP00958764 A EP 00958764A EP 1218890 A2 EP1218890 A2 EP 1218890A2
Authority
EP
European Patent Office
Prior art keywords
ionic liquid
product
decomposition product
chloride
regenerate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20000958764
Other languages
German (de)
English (en)
Inventor
A. J. British Nuclear Fuels Plc Jeapes
R. C. British Nuclear Fuels Plc Thied
Kenneth Richard Questor Centre Seddon
W. R. Questor Centre Pitner
D. W. Questor Centre Rooney
Justine E. British Nuclear Fuels PLC Hatter
T. Department of Chemistry Welton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sellafield Ltd
Original Assignee
British Nuclear Fuels PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Nuclear Fuels PLC filed Critical British Nuclear Fuels PLC
Publication of EP1218890A2 publication Critical patent/EP1218890A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/42—Reprocessing of irradiated fuel
    • G21C19/44—Reprocessing of irradiated fuel of irradiated solid fuel
    • G21C19/48—Non-aqueous processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Definitions

  • This invention relates to processes for treating spent ionic liquids.
  • Ionic liquids free of molecular solvents were first disclosed by Hurley and Wier in a series of US patents (24446331, 2446339, 2446350).
  • an ionic liquid is a salt, a mixtures of salts, or a mixture of components which produce a salt or salts, which melts below or just above room temperature.
  • salt means an entity comprising entirely of cationic and anionic species.
  • Such liquids are known as "ionic liquids" although this term is sometimes used for salts which melt at relatively high temperatures.
  • the term “ionic liquid” refers to a salt which melts at a temperature of up to 100°C.
  • Co-pending patent application PCT/GB99/00246 discloses a method for reprocessing spent nuclear fuel which comprises dissolving the spent fuel or constituent parts of the spent fuel in an ionic liquid to substantially separate fissile material from other components of irradiated fuel. Also disclosed is the subsequent treatment of the resulting ionic liquor, either by solvent extraction or electrochemical treatment to recover the dissolved uranium or plutonium.
  • Fission products may alternatively or additionally be extracted from the ionic liquid by the addition of an organic solvent. Addition of an organic species results in the precipitation of fission product compounds.
  • the precipitate can be filtered from the ionic liquid and calcined to convert to oxide prior to a vitrification step. Cleaned ionic liquid can then be recycled to the electrorefiner.
  • Combustion is another option for removal of contaminants, wherein spent ionic liquid is heated to temperatures in excess of 200°C.
  • the disadvantage of this process can be measured in economic terms: Combustion of imidazolium salts results in the production of carbon dioxide, water and a mixture of nitrogen oxides (NOJ. This means that the ionic liquid cannot be recycled and is in fact destroyed.
  • a method for treating a spent ionic liquid composition comprising an ionic liquid and contaminant, the method comprising heating said ionic liquid to form a partial decomposition product thereof, separating said product from said contaminant and reacting the separated product with a reactant to regenerate said ionic liquid.
  • thermolysis products were left for two days at room temperature and re-acted to produce a mixture of 1,3- dimethylimidazolium chloride, 1 ,3-diethylimidazolium chloride, and l-methyl-3- ethylimidazolium chloride.
  • the decomposition product is separated together with at least one other decomposition product from the contaminants. Separation is effected by volatilisation during the heating process. In one embodiment of the invention the partial decomposition product is separated from the at least one other decomposition product by distillation.
  • the ionic liquid is heated under reduced pressure at or below 2mmHg at a temperature ranging from 200°C to 300°C or more preferably from 220°C to 250°C.
  • Spent ionic liquid for example l-memyl-3-emyli ⁇ udazohum chloride
  • fission products possibly organic radiolysis products, and will require treatment in order to recover the fission products in a form suitable for conversion into a stable waste form.
  • the ionic liquid is heated under reduced pressure to a temperature within the range of 200°C to 300°C.
  • l-methyl-3-ethylimidazolium is heated at a temperature from 220°C to 250°C for 2-3 hours at pressures below 2mmHg.
  • Volatile products can be collected in a cold trap and subsequent distillation of the mixture allows for separation of the components.
  • the most volatile components are hydrogen chloride and ethene.
  • Hydrogen chloride can be scrubbed from the system using a hydroxide scrubber and ethene can either be bottled or burnt as a by-product.
  • 1 -methylimidizole and 1 -ethylimidizole can be separated by distillation to allow for regeneration of the specific ionic liquid l-methyl-3-ethylimidazolium chloride. It should be understood that separation is not required for processes which operate on a mixture of l-methyl-3-ethylimidazolium chloride, 1,3-dimethylimidazolium chloride and 1,3-diethylimidazolium chloride.
  • fission product residue is calcined to convert it into a stable waste form.
  • fission product residue is reacted with boric acid to convert it into a suitable form for disposal.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Removal Of Specific Substances (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

L'invention concerne un procédé de traitement d'une composition liquide ionique épuisée, consistant à chauffer ladite composition pour former un produit de décomposition partiel. Ce produit est ensuite séparé des contaminants de la composition et le produit séparé est mis en réaction avec un réactif, en vue de la régénération du liquide ionique.
EP20000958764 1999-08-19 2000-08-21 Procede de recyclage de liquides ioniques Withdrawn EP1218890A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9919606A GB9919606D0 (en) 1999-08-19 1999-08-19 Process for recycling ionic liquids
GB9919606 1999-08-19
PCT/GB2000/003234 WO2001015175A2 (fr) 1999-08-19 2000-08-21 Procede de recyclage de liquides ioniques

Publications (1)

Publication Number Publication Date
EP1218890A2 true EP1218890A2 (fr) 2002-07-03

Family

ID=10859412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000958764 Withdrawn EP1218890A2 (fr) 1999-08-19 2000-08-21 Procede de recyclage de liquides ioniques

Country Status (6)

Country Link
EP (1) EP1218890A2 (fr)
JP (1) JP2003507185A (fr)
CN (1) CN1375103A (fr)
AU (1) AU7018700A (fr)
GB (1) GB9919606D0 (fr)
WO (1) WO2001015175A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013098056A1 (fr) 2011-12-28 2013-07-04 Lanxess Deutschland Gmbh Purification de caoutchouc nitrile éventuellement hydrogéné
US11492306B2 (en) * 2020-09-30 2022-11-08 Honeywell International Inc. Alkylation process with thermal oxidation system
US11578020B2 (en) 2020-08-04 2023-02-14 Honeywell International Inc. Naphtha complex with thermal oxidation system
US11578278B2 (en) 2020-08-01 2023-02-14 Honeywell International Inc. Renewable transportation fuel process with thermal oxidation system
US11780795B2 (en) 2020-08-04 2023-10-10 Honeywell International Inc. Cumene-phenol complex with thermal oxidation system

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6991718B2 (en) 2001-11-21 2006-01-31 Sachem, Inc. Electrochemical process for producing ionic liquids
WO2004016571A2 (fr) 2002-08-16 2004-02-26 Sachem, Inc. Liquides ioniques d'un acide de lewis
JP4706067B2 (ja) * 2004-12-27 2011-06-22 独立行政法人産業技術総合研究所 イオン液体
JP4652359B2 (ja) * 2007-03-09 2011-03-16 日本合成化学工業株式会社 イオン液体の分解処理方法
JP4753141B2 (ja) * 2007-08-01 2011-08-24 独立行政法人 日本原子力研究開発機構 イオン液体を用いたウランの溶解分離方法、及びそれを用いたウランの回収方法
US7732364B2 (en) * 2007-12-28 2010-06-08 Chevron U.S.A. Inc. Process for ionic liquid catalyst regeneration
KR100974890B1 (ko) 2008-04-18 2010-08-11 인하대학교 산학협력단 극초단파를 이용한 이온성 액체의 회수방법
JP4843106B2 (ja) * 2011-01-24 2011-12-21 独立行政法人日本原子力研究開発機構 イオン液体を用いたウランの回収方法
JP5734004B2 (ja) * 2011-02-07 2015-06-10 三菱重工業株式会社 プルトニウム含有廃液の処理方法及び処理装置
US8673800B2 (en) * 2012-02-14 2014-03-18 Chevron U.S.A. Inc. Hydrolysis of used ionic liquid catalyst for disposal
US9561499B2 (en) 2013-04-19 2017-02-07 Reliance Industries Limited Process for regenerating ionic compound
JP2020094979A (ja) 2018-12-14 2020-06-18 日立Ｇｅニュークリア・エナジー株式会社 有機よう素捕集装置及び有機よう素捕集方法
JP7470491B2 (ja) 2019-02-25 2024-04-18 日立Ｇｅニュークリア・エナジー株式会社 有機よう素除去剤
JP7281393B2 (ja) 2019-12-18 2023-05-25 日立Ｇｅニュークリア・エナジー株式会社 有機よう素除去剤および有機よう素除去装置
JP7373454B2 (ja) 2020-04-10 2023-11-02 日立Ｇｅニュークリア・エナジー株式会社 有機よう素捕集装置
CN112680609B (zh) * 2020-12-14 2022-06-03 中国人民解放军63653部队 一种钚回收离子液体萃取剂及其从含钚废液中萃取分离钚的方法
JP2024025247A (ja) 2022-08-10 2024-02-26 日立Ｇｅニュークリア・エナジー株式会社 フィルタベント装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9719551D0 (en) * 1997-09-16 1997-11-19 British Nuclear Fuels Plc Treatment of molten salt reprocessing wastes
GB9802852D0 (en) * 1998-02-11 1998-04-08 British Nuclear Fuels Plc Nuclear fuel reprocessing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0115175A2 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013098056A1 (fr) 2011-12-28 2013-07-04 Lanxess Deutschland Gmbh Purification de caoutchouc nitrile éventuellement hydrogéné
US11578278B2 (en) 2020-08-01 2023-02-14 Honeywell International Inc. Renewable transportation fuel process with thermal oxidation system
US11578020B2 (en) 2020-08-04 2023-02-14 Honeywell International Inc. Naphtha complex with thermal oxidation system
US11780795B2 (en) 2020-08-04 2023-10-10 Honeywell International Inc. Cumene-phenol complex with thermal oxidation system
US11492306B2 (en) * 2020-09-30 2022-11-08 Honeywell International Inc. Alkylation process with thermal oxidation system

Also Published As

Publication number Publication date
GB9919606D0 (en) 1999-10-20
WO2001015175A3 (fr) 2002-02-21
WO2001015175A2 (fr) 2001-03-01
AU7018700A (en) 2001-03-19
CN1375103A (zh) 2002-10-16
JP2003507185A (ja) 2003-02-25

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