WASTEHEAT EXCHANGER OF GREY DRAINS Russian patent published in 2013 - IPC F24D17/00 

FIELD: power engineering.

SUBSTANCE: wasteheat exchanger of grey drains comprises a drain accumulator tank, pipelines for supply and drainage of drains, a tubular heat exchanger with a liquid coolant, a device for air supply into waste water. Pipelines of drains supply are located above the surface of grey drains in the accumulator tank and are equipped with drainage attachments, equipped as devices to supply air by ejectors-aerators and arranged above the surface of grey drains at the distance of 2-3 calibres of width of drainage attachments, tubes of the heat exchanger are arranged along the vertical axis under the drainage attachments at the distance of 1-2 diameters of heat exchanger tubes from the surface of grey drains in the accumulator tank. Drainage of the drains is made in the form of two pipelines - an overflow pipeline for drainage of polluted drains and a pipeline of treated drains drainage located under the overflow pipeline.

EFFECT: improved operating characteristics.

2 dwg