Device for the catalytic oxidation of gases containing SO2 with oxygen.

Device for complete or partial catalytic oxidation, continuous, of a starting gas containing sulfur dioxide and oxygen, comprising at least one tube contact apparatus which are subsequently connected several contact stages and one or more absorbers, where the tube contact apparatus one vertical heat exchanger formed by several tubes jacketed having an inner tube and an outer tube, the inner tube filled with a catalyst being and performing heat transfer around these interior tubes by means driven cocurrent in the space between the inner and outer tube.