engleski

Boiler flue gases as secondary source in polyester production

Energy efficiency improvement in polyester production by applying boiler flue gases heat recovery was investigated. This study presented increasing process efficiency and at the same time the thermal pollution reduced. The implementation of the economizer for feed water preheating with heat contained in the exhaust flue gases reduced natural gas consumption by 9.2 % and also flue gases exhaust temperature diminished from 204 0C to 51.8 0C. When an air preheater using for combustion air preheating was applied, the natural gas savings became 7%. Simultaneously, the air pollution was also lowered and the outlet flue gases temperature diminished from 204 0C to 64.40C. The utilization of the economizer and the air preheater resulted in a maximum fuel saving of 10.15% and a minimum thermal pollution with flue gases exhaust temperature of 31.150C.

flue gases heat recovery; natural gas savings; environmental protection

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