Steam injection device of methanol synthesis tower

The utility model discloses a steam injection device of a methanol synthesis tower. The steam injection device is characterized by comprising a spray needle and a spray needle bracket, wherein the spray needle bracket comprises a spray needle base and a central supporting column, and the central supporting column is vertically arranged in the center of the spray needle base; the number of the spray needles is multiple. The spray needles are annularly distributed on the outer side of the central supporting column, a plurality of hoops are annularly distributed at the upper end of the central supporting column, the number of the hoops corresponds to that of the spray needles, the hoops are in star-shaped connection with the central supporting column through connecting ribs, and the hoops aresequentially connected through the connecting ribs to form a polygon; the upper portion of the spray needle is limited in the hoop, and the lower portion of the spray needle is connected to the sprayneedle base. The utility