METHOD OF PRODUCING CHLORINE BY GAS-PHASE OXIDATION Russian patent published in 2013 - IPC C01B7/04 B01J8/04 

FIELD: chemistry.

SUBSTANCE: invention is meant for the chemical industry. The method of producing chlorine involves catalytic gas-phase oxidation of hydrogen chloride 1 with oxygen 2 on at least two stacked layers of catalyst I, II, III in adiabatic conditions. The mixture of gaseous reaction products 4, 6, 8 is passed through at least one heat exchanger IV, V, VI. Temperature in the catalyst layers ranges from 150°C to 800°C and temperature of the gas mixture 3 at the inlet of the first catalyst layer I or in each of the catalyst layers I, II, III ranges from 150°C to 400°C. Catalytic oxidation is carried out at pressure of 1-30 bar, with 2-12 catalyst layers. Molar ratio of oxygen to hydrogen chloride is equal to (0.25-10):1. Catalyst layers I, II, III are thermally isolated. Reactors 31-33 for producing chlorine are connected into a system by lines 3, 5, 7 for feeding starting compounds and lines 4, 6, 8 for removing reaction products.

EFFECT: simple design of the reactor and control by maintaining heating conditions in the reactor, eliminating adverse effect on stability and service life of the catalyst.

18 cl, 4 dwg, 5 ex