Design of flue gas condenser

Abstract

Acid rain, caused by sulphur oxides in the atmosphere, and global warming, caused by high temperature emission and presence of various other oxides in the flue gases, is two of the many problems faced today. Engro Foods plans on reducing these two phenomena by installing a flue gas condenser. This condenser will condense out the acids and simultaneously, reduce the temperature of the flue gas, contributing to relatively more environment friendly discharge. To achieve our purpose the flue gas is passed through several equipment for heat exchange and energy recovery as well as the some of the constituent components are converted and recovered in the form of useful components. A heat exchanger will be designed to bring down the flue gas to first, its acid dew point and then, to further reduce the temperature. The energy recovered is utilized for heating the water for steam generation, while the acids form during the condensation process neutralize the basic water coming out as by-product of dairy products manufacturing.