Boiler feed water deaerator TDG series

The TDG series tray type thermal deaerators are designed to heat boiler feed water and reduce oxygen and carbon dioxide levels (oxygen levels in the feed water of less than 0,02 mg/l - 0,02 ppm can be achieved). Remaining oxygen can be completely removed using oxygen scavenging chemicals. Basically, the complete system consists of a storage vessel, a deaeration section and a vent. OPERATION Returning condensate and softened make-up water are introduced in the deaerator dome to be heated by a contact cascade steam heating system (counter-current flow). Most of the dissolved gases are liberated from the water at this point, and they are released to the atmosphere trough the flash steam vent line. The deaerated water then falls to the storage vessel below, where a steam blanket ensures that no gases are reabsorbed. A sparger pipe is installed inside the tank, at the bottom level, providing the necessary heating energy. A second low pressure steam supply may also be necessary. The complete unit is supplied including all the necessary instrumentation for temperature, pressure and level control, to be described in our offer depending on the operation conditions (see Table 1). MAIN FEATURES Turndown (max./min. flow) – 100:1. Long life expectancy CONNECTIONS: Flanges EN or ASME Sockets BSP or NPT Different connections on request Deaerator dome – vertical installation. Storage vessel – cylindrical horizontal design. Final dimensions and connections according to LIMITING CONDITIONS PS – Maximum allowable pressure 0,5 bar TS – Maximum allowable temperature Minimum operating temperature: -10 ºC; Design code: AD-Merkblatt. the drawing supplied after order confirmation.