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:
-
- Portsmouth, OH
- 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)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
- 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 = {Thu Jan 01 00:00:00 EST 1981},
month = {Thu Jan 01 00:00:00 EST 1981}
}