Condensate Polishing Unit for Alkhalij Power Plant, Libya was executed in the year 2011. Alkhalij CPU project was aimed at treating corrosion residuals & unidentified deposits (otherwise CRUD) in steam pipe lines and feeding it back to the steam condensate circuit. These contaminants, if untreated, would deposit on the turbine blades, affecting its heat transfer efficiency. Steam from LP turbine is collected in a Condensate hot well from where it is pumped to the respective power plant (Alkhalij) CPU units with Condensate Extraction pumps. The system was designed for the shut off head of the condensate extraction pumps as a good engineering practice.
Scheme was Prefilter, Vertical Cylindrical Condensate Polishing Unit Vessels and its external regeneration system. Challenge in this plant was to design all the equipment’s on skid so that at site, skid can be just connected to one another. And also, due to space constraint, skid was to be placed in a 1 m deep pit. Skid mounted design considered to reduce the interface issues/erection time at site.