Conversion of HCl to Cl₂ by coupling oxidation reaction and dewatering

Based on thermodynamic calculation and analysis of equilibrium conversion rate of HCl oxidation, the reaction-dewatering coupling technique was applied to the oxidation process of hydrogen chloride, and the process simulation was studied in this work. The results show that the conversion rate of HCl was increased effectively by coupling dewatering in continuous HCl oxidation process. And the cyclic process for multi-dewatering steps under the condition of non-excessive oxygen was also studied. The results show that the conversion rate of HCl was evidently enhanced by increasing secondary oxidation temperature. And the mixture gas which could be used directly in organic chlorination process was obtained through multi-dewatering steps under the condition of the molar ratio of HCl/O₂ at 8:1 with the total conversion rate of HCl at 49.3% and the volume content of oxygen in the mixture gas under 0.2%.