SU853124A1 - System for thermic desalinating of steam turbine plant water - Google Patents

Description

one

The invention relates to the field of power engineering, in particular to a plant for the production of distillate, and can be applied to condensation power units of thermal power plants.

The system of thermal desalting of water of a steam turbine installation is known, containing an adiabatic vacuum evaporator coupled with a distillation steam-water condenser, a steam condenser with a tube bundle placed in its housing, an evaporator purge line with a water scrubber and an inertial salt collector installed in it, a national air-vapor condenser placed in the recirculation loop of the hot air of the steam generator unit, and a source of cold air 1.

The disadvantage of this system is the high cost of the distillate and the need to reduce the make-up water by the cationization method.

The purpose of the invention is to reduce the cost of distillates. 25

To achieve this goal, a portion of the tube bundle of the steam condenser is connected to the evaporator, and a water scrubber after the distillation condenser is connected to the recirculation loop and through the latter is a source of cold air.

The drawing shows schematically the system of thermal desalting of water of a steam turbine plant.

Adiabatic vacuum evaporator 1 is connected via steam 2 to distillation steam condenser 3. Steam condenser 4 of turbine 5 contains tube bundle 6 connected by line 7 with evaporator 1 and pump 8. Water scrubber 9, inertial trap are installed in series on evaporator purge line. 10, a distillation steam-air condenser 11 placed in the hot air circuit of the steam generating unit 12 with the air heater 13. The condenser 11 is connected to the salt trap 10 by the air duct 14 recirculated tion of hot air from the fan 15, air heater with 13 - duct 16 and with a source of cold air (not shown) - to blow air duct 17 by the fan 18. For dispensing distillate are conduits 19,

A pump 20 installed in pipeline 21 is used to feed and spray the wash water in the scrubber. Pipe 22 is provided to feed the plant. For cooling the distillation condenser 3 to flow, the latter is connected by a pipe 23 and a collector 24 to a cold source of the station unit, and a pipe 25 and collector 26 are intended for removal of heated water. The system works as follows. Due to the condensation heat, the steam from the turbine 5 heats up in the condenser 4 cooled water, which is fed to the adiabatic vacuum evaporator 1, where such a vacuum is maintained so that the evaporation temperature is approximately 3 ° C lower than the temperature of the circulating water. The water entering the evaporator 1 is unregulated with respect to the pressure and temperature in the evaporator. The non-evaporating water is taken from the evaporator by pump 8 and supplied to the heating surface of the condenser 4 of the turbine 5. The main part of the heating surface of the condenser 4 is cooled from the collector 24. The secondary steam from the evaporator 1 is sent to the distillation condenser 3, where it is distilled to the consumer via pipeline 19 The distillation condenser is also cooled from the collector 24. The material and chemical balance of the system is maintained by appropriate feed through line 22 through mechanical filters (not shown in the diagram ), and the purge is carried out through the pipeline 21 with a scrubber 9, the heating agent in which is the recirculated hot air of the steam-and-jetting unit 12.

Owing to the high mineralization of the purge water, its evaporation occurs without the heating surface by direct contact with hot air. Salts liberated as a result of evaporation of water are separated in an inertia salt trap 10, from which they are fed to chemical plants for processing and use in folk farms. The steam-air mixture enters through the condensate condenser located in the hot air recirculation circuit of the steam generating unit, and a source of cold air, which is used to reduce the cost of the distillate, part of the steam tube bundle. The condenser is connected to an evaporator, and a water scrubber after the distillation condenser is included in the recirculation circuit and through the latter is a source of cold air.

Claims (1)

Sources of information taken into account in the examination 1. A. Stermap and others. Analysis of the schemes for the inclusion of evaporation plants in high-power condensing units. Reports of Moscow Power Engineering Institute, Heat and Power Section, Moscow, Moscow Power Engineering Institute, 1970, p. 13. A cold air cooled air blower 11 with a blower fan 18. In a condenser AND, the vapor-air mixture is first cooled to a temperature equal to the temperature of condensation at a partial pressure of water vapor in the mixture, and then the steam is condensed and removed conduit 19 is provided to the consumer. Uncondensed air is mixed with cooling air, with air in the air duct 16 and fed into the air heater 13 of the unit. The description of the installation provides a low cost of the distillate and eliminates environmental pollution by purge waters, since the installation is without drainage. Formula invention system thermal desalting water turbine plant comprising: an adiabatic vacuum evaporator reported but couple with distillation narovod nym condenser vapor condenser disposed in the housing the tube bundle, the purge line evaporator with sequentially mounted thereon a water-scrubber and an inertial soleulovitelem, distillate locomotive locomotive