METHOD OF PRODUCING MIXED FLUORINE SORBENT FOR CLEANING OF HEXAFLUORIDES OF TUNGSTEN, URANIUM, MOLYBDENUM AND RHENIUM FROM HYDROGEN FLUORIDE

FIELD: process engineering. ^ SUBSTANCE: invention relates to treatment of wastes produced in using higher metal fluorides: WF6, UF6, MoF6, ReF6 and containing hydrogen fluoride, in particular to production of sorbent for cleaning of said hexafluorides. Proposed method consists in mixing lithium or...

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Hauptverfasser:	SEREGIN MIKHAIL BORISOVICH, VISHNJAKOVA OL'GA VIKTOROVNA, KOSUKHIN VLADIMIR VASIL'EVICH, VYBYVANETS VALERIJ IVANOVICH, CHUKHLEBOVA TAT'JANA DMITRIEVNA, ROMANOV SERGEJ KUZ'MICH, KUZNETSOV ANDREJ JUR'EVICH, SHATALOV VALENTIN VASIL'EVICH, SHILKIN GENNADIJ SERGEEVICH, CHERENKOV ALEKSANDR VASIL'EVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG] CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	FIELD: process engineering. ^ SUBSTANCE: invention relates to treatment of wastes produced in using higher metal fluorides: WF6, UF6, MoF6, ReF6 and containing hydrogen fluoride, in particular to production of sorbent for cleaning of said hexafluorides. Proposed method consists in mixing lithium or barium carbonate with calcium hydroxide, drying at 20-30C and 60-90C, calcinating at 100-120C and two-stage hydrofluorination by anhydrous hydrogen fluoride at 300-350C in two sorption apparatuses connected in series. ^ EFFECT: high strength, porosity and hydrogen fluoride capacity. ^ 3 cl, 1 ex, 1 tbl Изобретение относится к технологии переработки отходов, образующихся при использовании высших фторидов металлов: WF6, UF6, МоF6, ReF6 и содержащих фтористый водород, в частности к получению сорбента для очистки упомянутых гексафторидов. Способ получения сорбента осуществляют путем смешения карбоната лития или бария с гелеобразным гидроксидом кальция, сушки, проводимой последовательно при температуре 20-30°С и 60-90°С, прокаливания при температуре 100-120°С и двухстадийного гидрофторирования безводным фтористым водородом при температуре 300-350°С в двух последовательно соединенных сорбционных аппаратах. Полученный сорбент обладает высокими показатели по прочности, пористости и емкости по фтористому водороду. 2 з.п. ф-лы, 1 табл.