Process for producing hydrogen fluoride from fluorine containing

Details Process for producing hydrogen fluoride from fluorine containing Process for producing hydrogen fluoride from fluorine containing

1980-10-17

1981-10-13

Hearn, Brian E.

Chemistry of inorganic compounds

Halogen or compound thereof

Hydrogen halide

423119, 423130, 201 27, 422194, C01B 719

Patent

active

042948169

ABSTRACT:
A process for extracting hydrogen fluoride from fluorine containing materials includes countercurrently contacting the materials with steam having a plane of rotation relatively perpendicular to the direction of flow of the material. An apparatus for the extraction of hydrogen fluoride from fluorine containing materials includes a rotary kiln having a first zone wherein a steam-air mixture countercurrently contacts the materials in an oxidation step, a second zone wherein an oxygen containing gas is tangentially injected into the kiln to provide complete combustion of carbon containing materials, a third zone wherein a steam stream countercurrently contacts the materials in a reducing step and means for providing a plane of rotation to the steam which is relatively perpendicular to the direction of flow of the material.

REFERENCES:
patent: 3017246 (1962-01-01), Kamlet
patent: 3073676 (1963-01-01), Mollard
patent: 3238016 (1966-03-01), Lapple
patent: 3241917 (1966-03-01), Lapple
patent: 4006066 (1977-02-01), Sparwald
patent: 4065551 (1977-12-01), Dahl
patent: 4113832 (1978-09-01), Bell
patent: 4235675 (1980-11-01), Bechthold

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