SU1306592A2 - Plant for deaeration of water - Google Patents

Abstract

The invention makes it possible to reduce the energy consumption of the installation and to increase the efficiency (1) of the deaeration efficiency. The source water is supplied to the compartment 16 of the preliminary deaeration through the nozzle (P) 19 (L

Description

and through the sprinkler 18 it enters the nozzle 17, the Stack at last, the water due to the vacuum created by the low vacuum pump 21 communicated to the compartment 16 through P 20, is freed from most of the solution. The invention relates to water deaeration technique and can be used to remove dissolved gases , in particular, oxygen, from water in the oil, energy and other fields of industrial engineering, by author. No. 1000054.

The aim of the invention is to reduce the energy consumption of the plant and increase the efficiency of deaeration.

The drawing shows schematically the installation of vacuum deaeration of water.

The installation contains a degasser 1, having a water inlet pipe 2, a sprinkler 3, a nozzle 4, a water outlet pipe 5, a gas outlet pipe 6, a level controller 7, a low level sensor 8, a vacuum vacuum pump 9, which creates a vacuum in the degasser 1, a pump 10 pumping out water from a degasser; a pipe 1 connected to a hermetic container 12; A nozzle 13 communicates the cavity of the tank 12 with the atmosphere or with a drain pipe 1A. The upper end of the pipe II can be equipped with a protective visor 15 (from drops).

In the upper part of the degasser there is a water pre-deaeration compartment 16 with a nozzle 17, a sprinkler 18, a water inlet port 19, a gas outlet nozzle 20 that informs the cavity of the compartment 16 with a vacuum pump 21 of low vacuum, a water outlet 22 that informs the compartment 16 through the hydraulic lock 23 with a degasser cavity 1.

The height h of the water seal is determined by the difference between the residual pressure in the degasser I and the compartment 16 created by the pumps 9 and 21, respectively,

gases and it enters the lower part of the compartment 16. Then, through P 22 of the water outlet and the hydraulic lock 23, which is a separator of cavities with different Pressure, according to P 2, water enters the degasser 1. 1 Il.

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The installation works as follows.

The initial water is supplied to the pre-deaeration compartment 16 through the steam supply pipe 19 and through the sprinkler 18 enters the nozzle 17. The stack through the nozzle 17, the water due to the vacuum created by the low vacuum pump 21 (for example, a water ring pump BBH) communicated with compartment 16 through nozzle 20, is released from most of the gases dissolved in it and enters the lower part of compartment 16. Where from through water supply nozzle 22 and hydraulic seal 23, which plays the role of a cavity separator with different pressure, through water supply nozzle 2 enters money congestion 1. In the degasser 1, the water with dissolved gas remaining through it through the sprinkler 3 is sprayed onto the nozzle 4. Due to the fact that the medium vacuum pump 9 creates a higher vacuum in the degasser 1 than the pump 21 in compartment 16, the water in the degasser 1 is freed from the remaining gases in it and, after passing through the nozzle 4 (lower), falls into the lower part of the degasser G, from where it is fed to the consumer through the nozzle 5 by the pump 10.

The sucked gases are removed from the degasser 1 through the nozzle 6, the passage is pre-upper nozzle 4, which plays the role of a drift separator.

To regulate the water level in the degasser, a level 7 regulator is provided that maintains the water level in the degasser within certain limits.

If the level regulator fails and the water level in the degasser is lowered to the lower limit, the sensor 8 of the lower limit level is triggered.

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which emergency stops the pump 10, pumping water from the degasser.

When the water level in the degasser rises and the level 7 regulator fails, the pipe 11 allows the water to drain from the degasser unhindered even if there is a vacuum in the degasser, since the internal diameter of the pipe 11 is designed for maximum water consumption in the degasser, and the height of the pipe is equal to or more in a degasser, mounted in meters of a water column. ,

The lower end of the pipe 11, rigidly connected to the airtight container 12, is lowered below the water level in the tank. If the residual pressure in the degasser is 0.05 kgf / cm. (0,005 MPa), then the height of the pipe from the water level in the hermetic tank 12 to the upper open end of the pipe must be at least 9.5 m.

In the absence of vacuum in the degasser, the water level in the tank 12 and the pipe 11 is the same. When creating a vacuum in the degasser 1, the water level in the pipe 11 is higher, since the upper open end communicates with the internal cavity of the degasser, and the gas cavity of the tank 12 is connected by the nozzle 13 to the atmosphere or to the drain pipe 14, which is close to atmospheric pressure. The maximum level in the pipe 11 is equal to the value created by the vacuum pump 9 in the degasser 1 vacuum, expressed in meters of water column.

In case of emergency increase of water level in degasser I, for example, as a result of deactivation of the regulator

Editor L. Veselovska Order 1478/5

Compiled by L.Simoyu Tehred I.Popovich

Circulation 657 VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

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7, the water level in the degasser reaches the upper open end of the pipe 11, and with further leveling up, the water from the degasser enters the 5th pipe 11, is discharged through it into an airtight container 12, and from the capacity by gravity, for example, into the drainage pipe 14, thereby providing the safety of the vacuum pump 9, preventing the ingress of water into the pump, as the water level in the degasser 1 with pipe I1 does not exceed the level of the upper open end ..

Performing the installation with a low vacuum pre-aeration compartment allows for lower operating costs, since most of the air dissolved in the water is removed and removed in this compartment without expanding it to a high vacuum. At the same time, due to the achievement of a deeper vacuum in the degasser, the efficiency of deaeration increases.

Claims (1)

Invention Formula five 0 five Installation of vacuum deaeration of water on auth.St. No. 1000054, characterized in that, in order to increase efficiency and deepen deaeration, it is additionally equipped with a low vacuum pump and a pre-deaeration compartment installed by the degassing device with a water inlet nozzle containing a sprinkler and a nozzle, and the pre-deaeration compartment is connected with a degasser through a water seal, and a low vacuum pump is connected to the pre-deaeration compartment. Proofreader I.Musk Subscription