Quarternary ammonium halides for treating halogen contamination
AssigneeBromine Compounds Ltd.
InventorsIgor Kompaniets, Or Press Frimet, Ofer Cohen, Ran Elazari
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Abstract
The invention relates to a method for treating emergency spill or leak of halogen which is bromine or chlorine, comprising contacting an aqueous solution of quaternary ammonium halide with the halogen.
Claims23
A method for treating emergency spill or leak of halogen which is bromine or chlorine, comprising contacting an aqueous solution of quaternary ammonium halide with the halogen,
- wherein the quaternary ammonium halide is selected from the group consisting of aliphatic and cyclic quaternary ammonium bromides or chlorides,
- wherein the aliphatic quaternary ammonium bromide is of the formula R1R2R3R4N+Br−, wherein R1, R2, R3 and R4 are independently selected from linear or branched C1-C5 alkyl,
- wherein the R1R2R3R4N+Br− is symmetrical quaternary ammonium bromide, such that R1, R2, R3, and R4 are the same,
- wherein the quaternary ammonium bromide is tetra ethyl ammonium bromide, tetra propyl ammonium bromide, or tetra butyl ammonium bromide, and
- wherein the cyclic quaternary ammonium bromide or chloride is selected from the group consisting of 2-methyl-1-alkyl-pyridinium bromides, 2-methyl-1-alkyl-pyridinium chlorides, 3-methyl-1-alkyl-pyridinium bromides and 3-methyl-1-alkyl-pyridinium chlorides wherein the alkyl at position 1 of the ring is linear or branched C1-C5 group.
Halogen-neutralizing aqueous solution comprising:
- from 30 to 60 wt. % tetra alkyl ammonium bromide, wherein the alkyl is linear or branched C1-C5 alkyl;
- and
- from 30 to 55 wt. % sodium bromide or from 30 to 60 wt. % calcium bromide.
Use of an aqueous solution of quaternary ammonium halide with concentration of not less than 40 wt. % as halogen neutralization agent in case of emergency leak of the halogen, wherein the halide is bromide, and wherein the aqueous solution of quaternary ammonium bromide further comprises one or more alkali or alkaline earth metal bromides.
Chlorine neutralization emergency system comprising an aqueous solution of quaternary ammonium halide with concentration of not less than 40 wt. % in an instantly sprayable or pourable form, wherein the halide is bromide, wherein the aqueous solution of quaternary ammonium bromide further comprises one or more alkali or alkaline earth metal bromides.
Dependencies are inferred from the claim text.