Hydrochloric acid recovery

Claim 1

THE PROCESS FOR RECOVERING AQUEOUS HYDROGEN CHLORIDE FROM HOT GASEOUS MIXTURES CONTAINING SAID HYDROGEN CHLORIDE IN ADMIXTURES CONTAINING SAID HYDROGEN CHLORIDE IN ADMIXTURE WITH CHLORINE, WATER VAPOR, OXYGEN, INERT GAS AND NORMALLY SOLID IMPURITIES WHICH CONSISTS ESSENTIALLY OF INTRODUCING SAID HOT GASEOUS MIXTURE INTO AN ELONGATED QUENCHING ZONE OF RESTRICTED CROSS-SECTIONAL AREA IN OPEN COMMUNICATION WITH A PHASE -SEPARATING ZONE OF ENLARGED CROSS-SECTIONAL AREA, INTRODUCING QUENCHING MEDIUM CONSISING ESSENTIALLY OF HYDROCHLORIC ACID IN CONTROLLED AMOUNTS INTO SAID QUENCHING ZONE, TO COOL SAID HOT GASEOUS MIXTURE TO THE TEMPERATURE CORRESPONDING SUBSTANTIALLY TO THE DEW POINT TEMPERATURE OF THE RESULTING ADMIXTURE OF SAID HOT GASEOUS MIXTURE AND SAID QUENCHING MEDIUM, ADDITIONALLY INTRODUCING LIQUID SCRUBBING MEDIUM EMANATING FROM WITHIN THE SYSTEM AT SAID DEW POINT TEMPERATURE INTO SAID QUENCHING ZONE, PASSING THE TOTAL EFFLUENCE FROM SAID QUENCHING ZONE INTO SAID PHASESEPARATING ZONE, MAINTAINING THE TEMPERATURE IN SAID PHASE-SEPARATING ZONE SUBSTANTIALLY CONSTANT AT SAID DEW POINT TEMPERATURE, THEREBY EFFECTING ISOTHERMAL SEPARATION OF A LIQUID PHASE COMPRISING AQUEOUS HYDROGEN CHLORIDE AND NORMALLY SOLID IMPURITIES FROM A VAPOR PHASE COMPRISING HYDROGEN CHLORIDE, WATER VAPOR, OXYGEN AND INERT