SU1171641A1 - Method of thermal deaeration of water - Google Patents

Abstract

A METHOD FOR THERMAL DEAERATION OF WATER by treating it with steam first in jets and then in a bubble layer, characterized in that, in order to improve the quality of deaeration, expand the working range and reduce the dimensions of the deaerator, the steam flow rate in the amount of 6-15 kg / ton .dv (L BeSa 0lfZ.f

Description

The invention relates to a power system, namely to methods of de-aeration and heating of liquids, and can be used in heating and de-aeration systems at thermal and nuclear power plants.

The purpose of the invention is to show the quality of deaeration, expanding the working range and reducing the size of the deaerator.

FIG. 1 depicts a deaerator that implements the proposed method; in fig. 2 shows section A-A in FIG. one.

The deaerator contains column 1 mounted on a storage tank (not shown). The column is equipped with a water inlet nozzle 2 and, in line with an inkjet plate 3, a bubbling plate consisting of an overflow valve 4, a heating section 5 and a deaerating section 6, and a drain device 7.

In addition, the deaerator contains a nozzle 8 for supplying steam to column 1 and nozzle 9 for removing steam from it. Valve 4 has a pallet 10.

The method is carried out as follows.

The deaerated water enters column 1 through nozzle 2 and enters the jet tray 3, from where it is poured as jets onto the downstream bubble plate and then through the overflow device 7 into the storage tank.

For heating and deaeration of water, steam is supplied under the bubbling plate through fitting 8, which at low loads passes through the perforation of the deaerating section 6, creating

upon contact with water, a bubbling layer in which de-aeration is intense. P & corrosion and corrosive gases leaking during the bubbling are retracted under the jet tray 3, where the water is heated and the pressure drop across the sparging plate due to the condensation of steam on Ltr / x water and the vapor pressure is drained through the sparging plate. In section 6, only the minimum amount of steam that is required for deep deaeration is supplied. This quantity corresponds to 6-15 kg / t.v. When the steam flow rate to the section 6 is exceeded, the pressure drop on the bubble plate increases, which leads to bypassing part of the steam through the bottom 10 of the valve 4 under the heating section 5 of the bubble plate when it is flooded. At the same time, water is prevented from being heated on the jets under heavy loads, and also a stable intensity of bubbling is achieved in section 6.

The implementation of heating in the heating section 5 and deaeration in section 6 of the bubbling plate allows the heating of the jets to be used practically only to maintain the required pressure differential.

The proposed thermal method

deaeration of water allows to separate the process of heating and deaeration of water in the areas of the bubble plate and when the amount of steam is fed to deaeration of 6-15 kg / t. significantly improve the quality of deaeration.

FIG. 2

Claims (1)

METHOD OF THERMAL DEAERATION OF WATER by treating it with steam first in jets and then in a bubble layer, characterized in that, in order to improve the quality of deaeration, expand the working range and reduce the size of the deaerator, steam is deaerated in an amount of 6-15 kg / t. D.V. 1977 Water S TSh2P Vapor FIG. f 1 1171641