Patent ID: 11905177
Assignee: COVESTRO INTELLECTUAL PROPERTY GMBH & CO. KG
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  F | IPC B  C

Claim 0:
1. A process for the reversible storage of chlorine from chlorine-containing gas in a storage medium, the process comprising:
contacting chlorine-containing gas with a liquid storage medium in a first step to form a loaded storage medium, the liquid storage medium comprising an ionic compound (I) having the formula

N—R1mR2nR3o+Clr−  (I);

wherein the loaded storage medium comprises chlorine from the chlorine- containing gas in an ionic compound (III) having the formula

N—R1mR2nR3o+Cl(r+2)−  (III);

wherein each of R1, R2 and R3 independently comprise an alkyl radical selected from the following group: methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, and 2-methylpropyl;
wherein R1, R2, and R3 collectively comprise more than one type of alkyl radical:
wherein m is an integer in a range of 0 to 3, n is an integer in a range of 0 to 3, o is an integer in a range of 0 to 3, and wherein a sum consisting of m, n, and o is 4; and
wherein r is an odd number in a range of 1 to 7, and wherein s is an odd number in a range of 1 to 7;

removing chlorine from the loaded storage medium by increasing a temperature of the storage medium and/or lowering a partial pressure above the storage medium, thereby discharging chlorine.