March 2016

Heat Transfer

Calculate thermal efficiency to optimize fired heater operation

In a Saudi International Petrochemical Co. petrochemical plant, fired heaters are designed to supply heat duty at 7 MW and are one of the major consumers of energy.

Ibrahim, M. E., Shirpurkar, V., Saudi International Petrochemical Co. (Sipchem)

In a Saudi International Petrochemical Co. petrochemical plant, fired heaters are designed to supply heat duty at 7 MW and are one of the major consumers of energy. Since the esterification reaction to create polybutylene terephthalate (PBT) is endothermic in nature, polymer chain formation is mainly dependent upon the specific heat required to react a large number of molecules to form the PBT product. The tubular heaters use mainly natural gas as fuel gas, which is the main portion of fuel fired in the burners, plus waste organic chemical liquid tetrahydrofuran (LTHF) fuel, which is generated from the tetrahydrofuran (THF) recovery unit. Additionally, offgas is fired into furnaces. However

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