METHOD OF INTENSIFYING HEAT EXCHANGE IN CONDENSER OF STEAM TURBINE PLANT Russian patent published in 2016 - IPC F01K13/00 

FIELD: energy.

SUBSTANCE: invention relates to power engineering. During operation of a steam turbine plant characterized by alternating modes of operation and downtime, during the downtime a condenser with a shell side and a tube side and cleaned from deposits brass tubes is disconnected from the recirculating water supply system and an external source of hot chemically desalinated water is connected to the condenser tube side, while a steam source is connected to the condenser shell side. Plant for preparation of a surfactant emulsion is connected to a source of the surfactant and the source of hot chemically desalinated water. Source hot chemically desalinated water is connected to the condenser shell side, the shell and tube sides of the condenser are fed with hot chemically desalinated water and high-concentration emulsion of the surfactant. Emulsion is maintained with the concentration of 20÷60 mg/kg in quasi-static conditions for 8÷12 hours and drained. In the period of the steam turbine plant shutdown the condenser is disconnected from external communications and drained both on water and on steam sides. On external and cleaned internal brass tubes of the condenser a mono- or polymolecular film of a surfactant is formed, the source of chemically desalinated water is connected with the condenser tube side, shell side and the plant for preparation of emulsion, the shell side is connected with the recirculating water supply system and the steam source, the plant for preparation of the surfactant emulsion is connected to the source of the surfactant.

EFFECT: invention allows improving efficiency of a steam-turbine plant by creating the best conditions for steam condensation on tube surfaces and reducing the rate of accumulation of deposits on the condenser tube sides.

3 cl, 1 dwg