Design & Implementation of Exhaust Gas Heat Exchanger for Sudanese Heavy Fuel Oil Heating (Furnace)

Abstract

Sudanese fuel oil (furnace) is used in North Khartoum Power Station for boiler firing. Sudanese fuel solidified in ambient temperature due to high wax content. Steam has been used to heat Furnace during transportation, off loading and storage. Many problems are come out due to mixing of steam and Furnace in combustion process beside problems of maintenance of pumps and cost of steam needed for such heating process. The aim of the present work is to investigate the possibility of using flue gas instead of steam to heat Sudanese fuel oil to avoid all problems associated with steam usage in all stages. A Test rig was designed and implemented to simulate different stages of Furnace usage. Tests were carried out using different flow parameters. Results show promising solution of using flue gas instead of steam for heating Sudanese fuel oil. Time and Economic evaluation show a big save in time during off – loading tankers, cost of producing auxiliary steam and maintenance cost besides the improvement in plant thermal efficiency due to heat recovered from flue gas.