The body of the SZL series steam boiler is composed of vertical upper and lower drums and convection tube bundles. The left and right sides of the combustion chamber are equipped with light pipe water-cooled wall tubes. The upper drum is equipped with a steam-water separation device and a surface sewage device, and the lower drum is equipped with Regular sewage discharge device. An economizer is arranged at the end of the boiler. The combustion part of the double-drum quick-installed boiler adopts a light chain grate to realize mechanical coal charging, and is equipped with a blower and an induced draft fan for mechanical ventilation, and is equipped with a screw slag machine to realize automatic slag discharge. The fuel falls from the coal hopper to the grate, After entering the furnace and burning, the flame is refracted through the back arch to the convection tube bundle, passing through the back flue gas outlet into the economizer and dust collector, and then drawn by the ind...