Sulfur-making acid-making steam sulfur-melting system

The utility model discloses a steam sulfur melting system for sulfur acid production. The device comprises a sulfur melting tank, a crude sulfur tank, a filter aid tank and a refined sulfur storage tank which are sequentially connected through pipelines, a plurality of rows of first steam coils extending vertically are arranged in the sulfur melting tank; a second steam coil is also arranged in the crude sulfur tank, the filter aid tank and the refined sulfur storage tank, a heat preservation steam interlayer is arranged outside the liquid sulfur conveying pipeline, a steam main pipe for heating is divided into two first-stage branch pipes, and a pressure control valve and a pressure gauge are independently arranged at the positions, close to the starting end, of the two first-stage branchpipes respectively; wherein one first-stage branch pipe is divided into a plurality of sulfur melting second-stage branch pipes which are connected with inlets of all rows of first steam coils in thesulfur melting tank respe