RU193748U1 - WATER TREATMENT PLANT FOR ADDITIONAL NUTRIENT WATER OF A HEAT 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 comprises a source water pipeline connected to a deaerator of additional feed water with a storage tank for deaerated water, connected by a pipeline to a steam turbine regenerative cycle pipeline, into which a condensation pump is included. An inlet gas line and an outlet gas line connected to the burners of the steam boiler are connected to the deaerator of the additional feed water. A gas heater is installed on the inlet gas pipeline, connected by a heating medium pipeline to a return network water pipe between network heaters connected to a constant pressure sampling of a steam turbine and a booster network pump, and a cooled heating medium pipeline from a gas heater is connected to a return network water pipe before a booster network the pump. EFFECT: increased quality of deaeration of additional feed water by increasing the temperature of the gas in front of the deaerator.

Description

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

A known analogue is a water treatment plant for additional feed water of a thermal power station, containing a deaerator of additional feed water with a source water pipe connected to it, supply and outlet gas pipelines, a deaerated water storage tank connected to a steam turbine regenerative cycle pipeline (see patent No. 2538000) . This analogue is adopted as a prototype.

The disadvantage of the analogue and the prototype is the reduced quality of water treatment by the water treatment plant of the auxiliary feed water of the thermal power plant, since the gas after the reducing installation of the thermal power plant has a very low (often negative) temperature, which significantly reduces the quality of deaeration of the additional feed water.

The technical problem to which the utility model is directed is the development of a water treatment plant for additional feedwater of a thermal power station.

The technical result achieved by the utility model is to increase the quality of deaeration of additional feedwater by increasing the temperature of the gas in front of the deaerator.

To achieve this technical result, a water treatment plant for additional feedwater of a thermal power station is proposed, containing a deaerator of additional feed water, with a source water pipe connected to it, supply and outlet gas pipelines, a deaerated water storage tank connected to a steam turbine regenerative cycle pipeline.

The peculiarity lies in the fact that a gas heater is installed on the inlet gas line of the deaerator of the additional feed water, connected by a heating medium pipeline to the return network water pipe between the booster network pump and network heaters, and a cooled heating medium pipe from the gas heater is connected to the return network water pipe before the booster network network pump.

Next, we 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 additional feed water of a thermal power station. The installation comprises a source water pipe 1 connected to a deaerator 2 of additional feed water with a storage tank 3 of deaerated water, connected by a pipe 4 to a pipeline 5 of the regenerative cycle of a steam turbine 6, into which a condensing pump 7 is connected. A supply gas pipe is connected to the deaerator 2 of the additional feed water 8 and a discharge gas pipe 9 connected to the burners of the steam boiler 10. A gas heater 11 is installed on the gas supply pipe 8, connected to the pipe 12 by a heating medium pipe of inverse delivery water heaters between network 13 connected to the constant selection pressure steam turbine 6, and network booster pump 14 and the conduit of the cooled heating medium heater 11 is connected to the gas line 12 to return water booster pump 14 network.

Water treatment plant additional feed water thermal power station operates as follows. Water through the pipeline 1 of the source water is supplied to the deaerator 2 of additional feed water. The natural gas used as the stripping agent is sent via a supply gas line 8 to the deaerator 2 of additional feed water. The gas in the supply gas line 8 with the help of a gas heater 11 is heated to the required temperature of 35-50 ° C with reverse network water. From the deaerator 2 of the auxiliary feed water, natural gas with evolved corrosive gases is supplied through the exhaust gas line 9 to the burners of the steam boiler 10. The deaerated water from the deaerator 2 of the additional feed water is drained into the storage tank 3 of the deaerated water, and then through the pipeline 4 it is supplied to the pipeline 6 regenerative cycle of a steam turbine 6 before the condensation pump 7.

Thus, the new interconnection of elements makes it possible to increase the efficiency of the water treatment plant of the additional feedwater of the thermal power station.

Claims (1)

A water treatment plant for the auxiliary feed water of the thermal power plant, comprising a gas pipeline connected to the additional feed water deaerator, characterized in that a gas heater is installed in the supply gas line in front of the additional feed water deaerator, connected by a heating medium pipeline to the return network water pipe between the booster network pump and the network heaters and the chilled heating medium pipeline from the gas heater is connected to the return network pipeline th water before the booster pump network.

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