Centrifugal gas compressor anti-corrosion device

The utility model relates to a centrifugal gas compressor anti-corrosion device. The erosion and corrosion problems of a rotor and an impeller of an existing centrifugal gas compressor are solved. The technical scheme is that the centrifugal gas compressor anti-corrosion device comprises a centrifugal gas compressor, wherein the centrifugal gas compressor comprises multiple-stage compression units, wherein an outlet of a previous-stage compression unit is connected with an inlet of a next-stage compression unit through a cooler and a separator, an outlet of the previous-stage compression unit is further connected with the inlet of the next-stage compression unit and/or an inlet of the previous-stage compression unit through a bypass pipeline, and a temperature adjusting valve is arranged on the bypass pipeline. The centrifugal gas compressor anti-corrosion device is simple in structure and low in investment and modification cost, the erosion and corrosion problems of the rotor and the impeller of the existing