HEAT RECOVERY AND WASTE GAS CLEANING SYSTEM Russian patent published in 2001 - IPC

FIELD: power engineering; simultaneous recovery of heat and cleaning of exhaust combustion products of heat-generating plants. SUBSTANCE: gas flow is admitted to first cleaning stage which consists of Venturi Scrubber 12, bin 22, pump 23 and pipe line 24. Then gas flow enters heating medium chamber 5 inside which finned thermal tubes 9 are arranged; fins are made in form of perforated spacers 10. Water fed to space between spacers 10 by pump 19 through spraying unit 21 forms second stage of cleaning. When gas flow gets in contact with thermal tubes 9, intermediate heat- transfer agent boils up and rises to zone of heating medium chamber 6 where it is condensed and the process is repeated. Moistening blast air by means of scrubber 16 and sprinkling chamber 17 reduces amount of nitric oxides generated during combustion. EFFECT: enhanced efficiency. 2 dwg