September 2006

Heat Transfer

Optimizing crude oil fired heaters

Case study shows best ways to improve efficiency

Dehghani, P., Gargani, S., National Iranian Oil and Petroleum Distribution Company; Hamidi, A. A., Tehran University

Different kinds of fired heaters used in the oil and petrochemical industries and better methods for efficiency improvement are described. The presented case study is the cabin crude oil fired heater at Tehran refinery. It is a cabin type with two combustion chambers and (2 × 24) burners on the floor and on the side walls with conductive and radiant heat transfer and a stack. This article presents the effects of different parameters – fuel type and amount, air and fuel preheating, percentage of excess air on efficiency, flame length and required air for full combustion to optimize fired heater performance. Fired heater types . The main classification of oil fired heaters depe

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