Vertical liquefied natural gas vaporizer with defrosting scrapers

The invention relates to a vaporizer. A vertical liquefied natural gas vaporizer with defrosting scrapers comprises a vaporizing pipe that comprises a plurality of bent sections and a vaporization section of a linear structure; the vaporization section and the bent sections are arranged at intervals to form a turn-back structure; a plurality of heat exchange plates are arranged on an external surface of the vaporization section; the vaporization section extends in an up-and-down direction; the heat exchange plates are distributed in a circumferential direction of the vaporization section; each heat exchange plate is of a flat plate structure, and a plane of the heat exchange plate is a vertical plane; scrapers are arranged on the two sides of the heat exchange plates and connected against the heat exchange plates; the scrapers are connected with a lifting mechanism for driving the scrapers to go up and down. The vertical liquefied natural gas vaporizer with the defrosting scrapers is capable of conveniently removing frost on the surfaces of the heat exchange plates, and therefore, a problem of inconvenient defrosting of an existing liquefied natural gas vaporizer is solved.