The invention discloses a steam conveying energy-saving thermal-insulation pipeline used for
zinc sulfate production. The steam conveying energy-saving thermal-insulation pipeline comprises a horizontal conveying
pipe, the inner wall of the horizontal conveying
pipe is coated with an anticorrosive layer, the outer wall of the horizontal conveying
pipe is sleeved with a thermal-
insulation layer, awater diversion groove is formed in the bottom of the thermal-
insulation layer, the outer surface of the thermal-
insulation layer is sleeved with a damp-proof layer, and the outer surface of the damp-proof layer is sleeved with an outer protective
barrel. Accumulated water flowing into a drainage pipe is automatically discharged and prevented from accumulating in the thermal-insulation layer and reducing the effect of
thermal insulation; through the outer protective
barrel and the damp-proof layer, the thermal-insulation layer is wrapped, it is avoided that the temperature of steam is lost inpenetration into the thermal-insulation layer and external temperature affects the temperature of the steam inside the pipe, and accordingly the effect of
thermal insulation is improved. Meanwhile, the inner wall of the horizontal conveying pipe is coated with the anticorrosive layer, in this way, the
corrosion resistance of the horizontal conveying pipe is improved, the service life of the horizontal pipe is prolonged, and the period of thermal-insulation effectiveness is prolonged. Nuts are detached to separate an upper protective wall and a lower protective wall to replace the thermal-insulation layer, so that maintaining is convenient.