Some considerations in the handling of fluorine and the chlorine fluorides

Abstract

lhhis rePOR was prepared as an account of work sponsored by the United States Government. Neither the United States nor the UNted States Department of Energy, nor any of their employees, nor any of contractors. subcontractors, or thew employees, makes any warranty, express or unplicd, or a~urnes any legd liability or respansibihty for the accuracy, completeness or uYrulness of any information, apparatus, product or Process dircloscd. or represents that its YPC would not infcinge privately owned nghts. J -. '

Liquid Hydrofluoric Acid Sorption Using Solid Media - Part 1

“…It is highly reactive and will readily attack a wide range of materials and compounds including (1) glass, concrete, and silica-based compounds; (2) most metals; (3) alkalis; (4) elastomers; and (5) many organic materials such as leather. Some of the reactions are very violent and can be highly exothermic-potentially forming explosive hydrogen gas (Farrar and Barber 1979).…”

10.2172/814127

“…(3) alkalis; (4) elastomers; and (5) many organic materials such as leather. Some of the reactions are very violent and can be highly exothermic-potentially forming explosive hydrogen gas (Farrar and Barber 1979).…”

“…This process is sometimes accomplished by neutralizing the HF with potassium hydroxide before sending it to a concurrent scrubbing chamber with a lime (calcium hydroxide) slurry. The lime slurry serves to floe and precipitate the calcium fluoride where it can then be filtered (Farrar and Barber 1979). Similar methods involve scrubbing with .…”

“…Although both of these studies proved good removal efficiency (-90 % or better) they, again, were designed to handle large flows of dilute (40 wt %) HF in gas streams and therefore were not conducted under conditions representative of the current study. Advantages and disadvantages of disposal of small amounts of fluorine and I-IF by soda lime traps or reaction with carbon have also been discussed (Detamore, April 16, 1983, Farrar andBarber 1979). One study of interest involved treating the off-gas from a uranium dioxide conversion reactor, which contained -50 ~01% HF (Brown and Fowler, January 1985).…”