Patent ID: 6019819
Filing Date: 2000-02-01
Classification: B01D,Y02P,Y10S

Abstract:
A method of removing heat, oil and pollutants from the waste gas of food fryers, which comprises the steps of:first, reducing the temperature of the waste gas to its corresponding saturation temperature;second, transferring heat from the waste gas to a liquid in an air to liquid heat exchanger and causing the portions of gas to condense and agglomerate by passing the waste gas downwardly through the air to liquid heat exchanger, thereby producing a mixture of oil, water, pollutants and waste gas;third, collecting the mixture and holding the mixture for a predetermined period of time in a series of cascading trays;fourth, heating the mixture being held in the airflow path by the waste gas passing therethrough to produce a separation of the oil therefrom;fifth, collecting and holding mixture which overflows the cascading trays in a collection basin to produce a further separation of oil from the mixture;sixth, removing separated oil from the mixture;seventh, washing additional water, oil and pollutants from the remaining non-condensed waste gas; andeighth, venting the remaining waste gas.