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Title: Method for directly recovering fluorine from gas streams

Abstract

This invention is a process for the direct recovery of gaseous fluorine from waste-gas streams or the like. The process comprises passing the gas stream through a bed of anhydrous K.sub.3 NiF.sub.6 pellets to fluorinate the same to K.sub.3 NiF.sub.7 and subsequently desorbing the fluorine by heating the K.sub.3 NiF.sub.7 pellets to a temperature re-converting them to K.sub.3 NiF.sub.6. The efficiency of the fluorine-absorption step is maximized by operating in a selected and conveniently low temperature. The desorbed fluorine is highly pure and is at a pressure of several atmospheres. Preferably, the K.sub.3 NiF.sub.6 pellets are prepared by a method including the steps of forming agglomerates of hydrated K.sub.3 NiF.sub.5, sintering the agglomerates to form K.sub.3 NiF.sub.5 pellets of enhanced reactivity with respect to fluorine, and fluorinating the sintered pellets to K.sub.3 NiF.sub.6.

Inventors:
 [1];  [2]
  1. (Portsmouth, OH)
  2. (Waverly, OH)
Issue Date:
Research Org.:
Goodyear Atomic Corp., Piketon, OH (USA)
OSTI Identifier:
864011
Patent Number(s):
4292287
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:  
EY-76-C-05-0001
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; directly; recovering; fluorine; gas; streams; process; direct; recovery; gaseous; waste-gas; comprises; passing; stream; bed; anhydrous; nif; pellets; fluorinate; subsequently; desorbing; heating; temperature; re-converting; efficiency; fluorine-absorption; step; maximized; operating; selected; conveniently; desorbed; highly; pure; pressure; atmospheres; preferably; prepared; including; steps; forming; agglomerates; hydrated; sintering; form; enhanced; reactivity; respect; fluorinating; sintered; method including; gas stream; gas streams; process comprises; highly pure; gaseous fluorine; comprises passing; subsequently desorb; direct recovery; /423/264/

Citation Formats

Orlett, Michael J., and Saraceno, Anthony J. Method for directly recovering fluorine from gas streams. United States: N. p., 1981. Web.
Orlett, Michael J., & Saraceno, Anthony J. Method for directly recovering fluorine from gas streams. United States.
Orlett, Michael J., and Saraceno, Anthony J. Thu . "Method for directly recovering fluorine from gas streams". United States. https://www.osti.gov/servlets/purl/864011.
@article{osti_864011,
title = {Method for directly recovering fluorine from gas streams},
author = {Orlett, Michael J. and Saraceno, Anthony J.},
abstractNote = {This invention is a process for the direct recovery of gaseous fluorine from waste-gas streams or the like. The process comprises passing the gas stream through a bed of anhydrous K.sub.3 NiF.sub.6 pellets to fluorinate the same to K.sub.3 NiF.sub.7 and subsequently desorbing the fluorine by heating the K.sub.3 NiF.sub.7 pellets to a temperature re-converting them to K.sub.3 NiF.sub.6. The efficiency of the fluorine-absorption step is maximized by operating in a selected and conveniently low temperature. The desorbed fluorine is highly pure and is at a pressure of several atmospheres. Preferably, the K.sub.3 NiF.sub.6 pellets are prepared by a method including the steps of forming agglomerates of hydrated K.sub.3 NiF.sub.5, sintering the agglomerates to form K.sub.3 NiF.sub.5 pellets of enhanced reactivity with respect to fluorine, and fluorinating the sintered pellets to K.sub.3 NiF.sub.6.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

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