RU2241679C1 - Method of thermal deaeraton of water - Google Patents

Abstract

FIELD: heat and power engineering.

SUBSTANCE: the invention presents a method of a thermal deaeration of water and is dealt with the field of heat and power engineering and may be used in boiler rooms and thermal power stations. The method of thermal deaeration of water, which provides, that the water is deaerated under the excessive pressure, and vented steam formed during the deaeration is withdrawn from the deaerator through a pipe line of the vented steam into a the vented steam cooler, where vented steam is condensed and present in it non-condensed gases are removed into the open air. The vented steam consumption control is made proportional to the consumption of the deaerated water and is carried out by the control element located on the vented steam outlet pipeline between the deaerator and the cooler of the vented steam. The technical result achievable by the offered invention consists in a raise of effectiveness of the thermal deaeration of water at the expense of maintenance of the optimal consumption of the vented steam of the deaerator and decrease of the deaeration installation capital inputs, in particular, the vented steam cooler capital inputs.

EFFECT: the invention ensures a raise of effectiveness of the thermal deaeration of water, maintenance of the optimal consumption of the vented steam of the deaerator, decrease of the deaeration installation capital inputs.

2 cl, 1 dwg

Description

The invention relates to the field of power engineering and can be used in boiler rooms and thermal power plants.

Known methods are analogues of thermal deaeration of water, by which water is deaerated under excess pressure, the vapor formed during deaeration is taken off from the deaerator through the vapor pipe to the vapor cooler, where the vapor contained in the vapor is condensed, and non-condensed gases are removed to the atmosphere (see book. Delyagin G. .N., Lebedev V.I., Permyakov B.A. This analogue is adopted as a prototype.

The reasons that impede the achievement of the technical result indicated below when using the known method adopted as a prototype include the reduced cost-effectiveness of thermal deaeration of water due to increased energy costs for the removal of vapor from the deaerator.

The technical result achieved by the claimed invention is to increase the efficiency of thermal deaeration of water by maintaining the optimal flow rate of the deaerator vapor and reducing the capital cost of the deaeration plant, in particular the vapor cooler.

The specified technical result is achieved by the fact that water is deaerated under excess pressure, the vapor formed during deaeration is removed from the deaerator through the vapor pipe to the vapor cooler, where the vapor contained in the vapor is condensed, and non-condensed gases are removed to the atmosphere.

A feature of the proposed method is that the regulation of the flow rate of the vapor is carried out in proportion to the flow rate of deaerated water using a regulatory body located on the vapor line between the deaerator and the vapor cooler.

A new method of thermal deaeration of water allows you to increase the efficiency of thermal deaeration of water by maintaining the optimal flow rate of the vapor, i.e. the exclusion of deaeration regimes with excessive or insufficient evaporation costs.

The drawing shows a diagram of a deaeration plant explaining the method.

The installation contains an overpressure deaerator 1 with feed water pipelines 2 connected to it, heating steam 3, deaerated water 4 and evaporator 5, an evaporator cooler 6 connected to a deaerator by an evaporation pipeline, an evaporator flow regulator 7 connected to a regulating body 8 located on the pipeline vapor 6 between the deaerator and the vapor cooler and connected to the sensor 9 flow rate of deaerated water.

The method of thermal deaeration of water is as follows.

The source water is supplied to the deaerator 1 through the pipe 2, steam for heating water is introduced through the pipe 3. The water treated during the deaeration is discharged from the deaerator through the deaerated water pipe 4. The resulting vapor is taken from the deaerator through the vapor pipe 5 to the vapor cooler 6, where the contained condensate is condensed vapor in the vapor, and non-condensing gases are removed to the atmosphere. The control of the flow rate of the effluent discharged from the deaerator is proportional to the flow rate of the deaerated water by the flow rate regulator 7, which is connected to the regulating body 8 located on the vaporization pipe 5 between the deaerator and the vapor cooler and connected to the deaerated water flow sensor 9.

Due to the fact that the regulatory body 8 is located on the pipeline 5 between the deaerator 1 and the vapor cooler 6, a much smaller amount of vapor is removed to the cooler 6 when the proposed method is implemented, which allows to reduce the heat exchange surface in cooler 6, reduce capital costs for the deaeration plant and increase profitability of thermal deaeration of water.

Claims (1)

The method of thermal deaeration of water, in which water is deaerated under excess pressure, the vapor formed during deaeration is removed from the deaerator through the vapor pipe to the vapor cooler, where the vapor contained in the vapor is condensed, and non-condensed gases are removed to the atmosphere, characterized in that the vapor flow rate is controlled proportionally the flow rate of deaerated water using a regulator located on the vapor pipe between the deaerator and the vapor cooler.