MULTISTAGE EVAPORATING PLANT OF COMBINED-CYCLE COGENERATION STATION Russian patent published in 1996 - IPC

FIELD: thermal-engineering; combined-cycle cogeneration stations where it is used to make up for working medium loss and to evaporate discharges. SUBSTANCE: exit gases of gas turbine are used as source water heating medium and as heating steam producer; makeup water of heating line is used to condensate secondary steam. Multistage evaporating plant has evaporating stages with heating sections series-interconnected and connected to regenerative heaters by means of secondary-steam pipelines; heating sections communicate with one another and with expanders through cascade drain pipings. Heating section inlet of the first evaporation stage is connected to circulation loop that has heat exchanger and circulating pump interconnected through pipings. Regenerative heaters are connected on water side at inlet to chemical water treatment plant and at outlet, to straight section of heating line. EFFECT: improved design. 1 dwg