EXHAUST HEAT RECOVERY POWER GENERATION PLANT IN LIME FIRING PLANT

摘要

PPROBLEM TO BE SOLVED: To contrive a mechanism structure of an exhaust heat recovery boiler reducing its installation cost as much as possible and stably maintaining a high exhaust heat recovery rate by efficiently removing dust adhering to heat transfer pipes so as to install an exhaust heat recovery power generation plant for a lime firing plant at a low cost and in a small space. PSOLUTION: As to a grate preheater exhaust heat recovery power generation plant of a lime firing plant, vertical type exhaust heat boilers by respective coiled-tube type heat transfer pipes are installed at the right and left lower parts of a grate preheater, exhaust gas collecting chambers of the grate preheater are connected to the upper ends of the vertical type exhaust heat boilers and collecting ducts are connected to the lower parts, superheaters are arranged at the upper parts of the vertical type exhaust heat boilers, evaporators and fuel economizers are arranged under the superheaters, and a steam turbine is connected to the superheaters. PCOPYRIGHT: (C)2010,JPO&INPIT