Horizontal biomass steam boilers mainly uses cured biomass fuel to provide hot water or steam. Its advantages are relatively mature technology, small energy loss and strong thermal energy supply capacity. The pot barrel is composed of arched tube plate and threaded pipe, so that the pot barrel is changed from a quasi-rigid body to a quasi-elastic body, and the tension parts in the tube-plate area are eliminated to reduce the stress. The smoke pipe in the tube plate is changed from two return journey to single return journey, which solves the problem of crack in the tube plate. Biomass steam boiler adopts the latest gasification combustion technology, set up advanced gasification rotary combustor, built-in cyclone secondary air distribution, fuel combustion more fully. The high efficiency heat transfer element - threaded pipe is adopted and the reasonable flue gas velocity is matched to improve the boiler thermal efficiency. High thermal efficiency. The boiler adopts the green renewab...