Patent ID: 6216489
Filing Date: 2001-04-17
Classification: B01D,F24F,F25B,F28B,F28D,F28F,Y02A,Y10S

Abstract:
A boiler for boiling a dilute liquid having a moisture constituent so as to evaporate moisture from the dilute liquid and reconstitute the dilute liquid into a concentrated liquid, said boiler including an inner vessel and an outer vessel defining an elongated liquid chamber therebetween, said outer vessel being adapted to receive dilute liquid into said liquid chamber, a heating element disposed in said inner vessel for heating liquid within said inner vessel, a heat exchange tube extending along said chamber and being operative to effect flow of heated liquid from said inner vessel through said tube so as to heat dilute liquid in said chamber, said inner vessel being operative to receive heated liquid from said chamber when dilute liquid therein has risen to a predetermined level, whereby dilute liquid introduced into said liquid chamber is preheated prior to entering said inner vessel.