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Heavy Fuel Oil Preheater for a Power Station

      The heat pipe preheater, presented in the photograph below, was manufactured in 1999 for a power station belonging to the Romanian electricity authority.
It was manufactured using the Multitubular Heat Pipe® Vertical Concept and is assigned to preheat the heavy fuel oil just before entering the burners.

Main features:

• Heavy fuel oil properties:
     – Rate: 25,000 kg/h.
     – Inlet temperature: 60 °C
     – Outlet temperature: 130 °C
     – Pressure : 40 bars
• Heating fluid: properties:
     – Superheated steam
     – Rate: 2,800 kg/h
     – Pressure: max. 16 bar
     – Temperature: max 300 °C
• Vaporization section of the Multitubular Heat Pipe
     – Bundle of tubes made of carbon steel ø 38 x 3.5 mm
     – Number of tubes: 113 pieces – Length of tubes: 1,100 mm
     – Jacket: ø 840 x 20 mm
• Condensation section of the Multitubular Heat Pipe
     – Bundle of tubes made of carbon steel ø 38 x 3.5 mm
     – Central tube: Ø 218 x 7 mm
     – Number of tubes: 108 pieces
     – Length of tubes: 2,500 mm
     – Jacket: ø 840 x 20 mm
• Heat transfer rate: 1,125,000 w
• Crude oil mixture rate: 3,6 m3/h crude oil, 8.5 m3/h salted water, 208 Nm3/h methane.
• Inlet crude oil mixture temperature: 10 °C.
• Outlet crude oil mixture temperature: 45 °C.
• Heat transfer rate: 435,000 w.