PLANT FOR HEAT RECOVERY FROM THE CONTINUOUS PURGE IN THE STEAM BOILER OF 420 T/H

摘要

The invention relates to a plant for the recovery of thermal energy and condensation water from the continuous purge in the steam boilers of 420 t/h, which recovers hot water from the boiler between 156 ata and 345°C and 6 ata and 159°C, the steam being delivered into the main conduit of the power plant. According to the invention, the plant consists of an expander (1) wherefrom the steam and condensation water are delivered into the main conduit (7) of the power plant through a pipe (b), the condensation water resulting from the expander (1) being sent through the pipe (c) to a heat exchanger (2) wherein it is cooled down to 90°C, using as a cooling agent the demineralized water conveyed from a chemical plant though a pipe (d) to the heat exchanger (2) wherein it is preheated from 20°C to 50°C and then it is sent into the steam producing system (6) through a pipe (e) where it is used as make-up water, while the condensation water cooled down to 90°C is led to the central heating circuit (5) of the power plant through a pipe (f).