RU200634U1 - WATER TREATMENT UNIT OF MAKE-UP WATER OF A THERMAL ELECTRIC STATION - Google Patents

Abstract

The utility model relates to the field of water treatment and can be used at thermal power plants. The installation contains a unit for desalting or softening the source water, a calciner with a decarbonized water storage tank, a make-up water deaerator with a deaerated make-up water storage tank, which is connected by a pipeline to the return network water pipeline, which includes a booster pump and mains water. heaters connected to the heating steam extractions of the turbine to which the condenser is connected. A feed water heater is included in the feed water pipeline, connected by a heating medium pipeline to the network water return pipeline after the network heaters, and the cooled heating medium pipeline of the source water heater is connected to the network water return pipeline between the booster network pump and the network heaters. A circulation pump is included in the pipeline of the cooled heating medium of the feed water heater. The technical result is an increase in the efficiency of the make-up water treatment plant of the thermal power plant.

Description

The utility model relates to the field of water treatment and can be used at thermal power plants.

Known analogue - a water treatment plant for make-up water of a thermal power plant, containing a source water heater installed in the pipeline of the source water of the water treatment plant. The feed water heater is connected via a heating medium to the turbine constant pressure steam line (see patent No. SU 1267015). This analogue was adopted as a prototype.

The disadvantage of the analogue and the prototype is the reduced efficiency of the water treatment plant for the make-up water of the thermal power plant due to the use of the source water in the heater as a heating medium of a very valuable coolant - steam from the selection of constant pressure from the turbine. This leads to an under-generation of electricity by this steam and, as a consequence, to a decrease in the efficiency of the water treatment plant for make-up water of a thermal power plant.

The technical problem to be solved by the utility model is the development of a water treatment plant for make-up water for a thermal power plant.

The technical result achieved by the utility model is to increase the efficiency of the make-up water treatment plant of a thermal power plant.

To achieve this technical result, a water treatment plant for make-up water of a thermal power plant is proposed, which contains a source water heater installed in the feed water pipeline of the make-up water treatment plant.

The peculiarity lies in the fact that the heating medium pipeline of the initial water heater is connected to the pipeline of the return network water after the network heaters, and the pipeline of the cooled heating medium from the initial water heater with the circulating pump included in it is connected to the pipeline of the return supply water between the booster network pump and the network heaters ...

Next, we will consider the information confirming the possibility of implementing a utility model with obtaining the desired technical result.

The drawing shows a schematic diagram of a water treatment plant for make-up water of a thermal power plant. The installation contains included in the initial water pipeline 1 unit 2 desalting or softening the source water, the calciner 3 with a storage tank 4 of decarbonized water, a deaerator 5 of make-up water with a storage tank 6 of deaerated make-up water, which is connected by a pipeline to the pipeline 7 of the return network water, in which includes a booster network pump 8 and network heaters 9 connected to the heating steam extractions of the turbine 10, to which the condenser 11 is connected. The feed water heater 12 is included in the feed water pipeline 1, connected by a heating medium pipeline to the return water pipeline 7 after the network heaters 9, and the pipeline of the cooled heating medium of the source water heater 12 is connected to the pipeline 7 of the return network water between the booster mains pump 8 and the mains heaters 9. A circulation pump 13 is connected to the pipeline of the cooled heating medium of the source water heater 12.

The water treatment plant for make-up water of a thermal power plant operates as follows. The water in the pipeline 1 of the source water is heated to 10-15 ° C by the exhaust steam of the turbine 10 in the condenser 11, then the water is supplied to the heater 12 of the source water, where it is heated to the technologically required temperature of 30-40 ° C with the network water. The heated water in the initial water heater 12 is supplied to the unit 2 for desalting or softening water, after which it enters the calciner 3, then after the storage tank 4 of the decarbonated water is supplied for deaeration to the make-up water deaerator 5. Further, the deaerated make-up water enters the storage tank 6, from which it enters the pipeline 7 of the return network water in front of the booster network pump 8. Using the source water of the network water as a heating medium in the heater 12 makes it possible to exclude the consumption of steam from the turbine extraction for heating the source water and use this steam for additional power generation.

Thus, the new interconnection of the elements makes it possible to increase the efficiency of the make-up water treatment plant of the thermal power plant.

Claims (1)

A water treatment plant for make-up water of a thermal power plant, containing a source water heater installed in the feed water pipeline of the water treatment plant, characterized in that the heating medium pipeline of the feed water heater is connected to the return network water pipeline after the network heaters, and the cooled heating medium pipeline from the feed water heater is connected to the circulating pump included in it is connected to the mains water return line between the booster mains pump and mains heaters.

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