CONDENSATION HEAT EXCHANGER Russian patent published in 2018 - IPC F22B1/18 

FIELD: energy.

SUBSTANCE: proposed technical solution refers to the field of energy conservation and can be used in heat power engineering, metallurgy, chemical and other industries, where steam and hot water boilers burning organic fuels are used, as a result of which flue gases containing a significant volume of water vapor are formed. One of the highly effective energy-saving technologies is the utilization of low-potential heat of outgoing flue gases by condensing part of the water vapor contained therein. In the condensation heat exchanger, which includes the first contact heat exchanger 1, connected in series, comprising a drip trap 2, a dispenser 3, a divider 4, a second contact heat exchanger 18 containing a drip trap 23, a dispenser 24, a divider 25, a first recuperative heat exchanger 20, pumps, a water-to-water heat exchanger 10, flues 11–16, a chimney 17, the tank-neutralizer 19, according to the invention, the first contact heat exchanger 1 is additionally provided with a second and third series-connected heat recovery exchangers 33, 34, connected respectively to the first input of the first contact heat exchanger 1 and to the first output thereof, and it is provided with a multi-injector injector 5 connected between the output of the second recuperative heat exchanger 33 and the first input of the first contact heat exchanger 1.

EFFECT: technical problem solved by the proposed technical proposal is to utilize the low-potential heat of the outgoing flue gases and to avoid the condensation of water vapor in flues and chimneys by using a multi-injector injector, combining the functions of the pre-cooler and the exhaust fan, and heating the flue gases at the outlet of the condensing heat exchanger.

1 cl, 2 dwg