Abstract:This paper introduces the design principles of the thermal energy utilization project, which sends the hot water resources produced by the chain grate-rotary kiln pellet production line in a pellet plant to the boiler room, and then sends the high-temperature hot water heated by the heat exchanger to the various heat users, in addition to the basic parameters, added equipment as well as balance and management measures for a stable heating system. The waste heat of the high-temperature return water resulting from the cooling of the hollow upper idler shaft of the chain grate can thus be recycled, thereby reducing the production costs.