MAINTENANCE OF WATER-CHEMICAL MODE OF BOILERS OF ULTRASUPERCRITICAL PARAMETERS
The characteristic of the condition of the water heat carrier for once-through boilers of supercritical and ultrasupercritical parameters is given. Noted the necessity of toughening of norms of quality of feed water and steam for mineral and organic impurities. A new way to control potentially acidic substances impurities feedwater, based on the measurement of conductivity of refrigerated samples before and after thermal decomposition of organic substances in a tract of the once-through boiler, is offered. The skilled data obtained at the laboratory stand and in the conditions of commercial operation of thermal power plant are provided.