Method of separation of hydrogen halides from mixtures containing same

Claim 1

A PROCESS FOR SEPARATING HYDROGEN CHLORIDE FROM ANHYDROUS GASEOUS MIXTURES THEREOF WITH AT LEAST ONE GAS FROM THE GROUP CONSISTING OF BORON HYDRIDES, HYDROGEN AND SATURATED ALIPHATIC HYDROCARBONS, WHICH COMPRISES CONTACTING SAID GASEOUS MIXTURE, AT A TEMPERATURE THAT DOES NOT EXCEED ABOUT 25*C., WITH A COMPLEX FORMED BY (1) LEWIS-TYPE ACID HALIDE FROM THE GROUP CONSISTING OF A CHLORIDE OF A GROUP 111-A METAL, A CHLORIDE OF A IV-A METAL A CHLORIDE OF A GROUP V-A METAL, FERRIC CHLORIDE AND ZINC CHLORIDE WITH (2) AN ORGANIC SOLVENT FROM THE GROUP CINSISTING OF ALIPHATIC-, CHLORINATED ALIPHATIC-, AND ALIPHATIC AROMATIC-ETHERS OF A GROUP VI-A ELEMENT CONSISTING OF OXYGEN, SULFUR, SELENIUM AND TELLURIUM,SAID COMPLEX FORMED BY (1) AND (2) BEING SHARACTERIZED BY SELECTIVELY COMPLEXING THE HYDROGEN CHLORIDE IN THE GASEOUS MIXTURE TO PROVIDE A COMPLEX OF HYDROGEN CHLORIDE THAT IS LESS VOLATILE THAN THE OTHER GAS IN MIXTURE WITH THE HYDROGEN CHLORIDE, AND HEATING THE RESULTING COMPLEX OF THE HYDROGEN CHLORIDE TO DISSOCIATE THE HYDROGEN CHLORIDE, SAID PROCESS BEING FURTHER CHARACTERIZED IN THAT THE GASEOUS MIXTURE FROM WHICH THE HYDROGEN CHLORIDE IS TO BE SEPARATED IS CONTACTED WITH AN AMOUNT OF THE COMPLEX FORMED BY (1) AND (2) SUFFICIENT TO COMPLEX SUBSTANTIALLY ALL OF THE HYDROGEN CHLORIDE IN THE GASEOUS MIXTURE, AND THEN SEPARATING THE RESULTING PURIFIED GAS FROM THE COMPLEX CONTAINING THE HYDROGEN CHLORIDE.