Waste Heat Power Generation System of Cement Calcination Plant

A waste heat power generation system of a cement calcination plant comprising:

• an AQC boiler having an economizer, an evaporator and a superheater;
• and a PH boiler having a first evaporator and a superheater, the system being structured so that a part of a hot water heated by the economizer of the AQC boiler is introduced into a low-pressure stage of a steam turbine via a flasher, and another one part of the hot water is superheated by the evaporator and the superheater of the AQC boiler, and still another one part of the hot water is superheated by the evaporator and the superheater of the PH boiler, so as to introduce a high-pressure steam into a high-pressure stage of the steam turbine, wherein:
• the PH boiler, in addition to the evaporator and the superheater, has a second evaporator on a PH exhaust gas exit side, and a returned hot water from the flasher is introduced into the second evaporator via a steam drum, and
• a hot water heated by the second evaporator is introduced into the steam drum, and a steam from the steam drum is introduced into the low-pressure stage of the steam turbine.