Method of vacuum deaeration of water

 

The invention relates to the field of power engineering and can be used in thermal power plants and boiler plants. In the method of vacuum deaeration of water in the deaerator serves the source and the heated water from the deaerator assign deaerated water and steam, the temperature of the hot water adjust, given a residual content of oxygen in the deaerated water. At the same time the temperature of the hot water adjust, given a residual content of carbon dioxide in deaerated water, and the temperature of the hot water set based on the need to achieve a given content the most stubborn of gas. The technical result consists in increasing the quality and efficiency of the vacuum deaeration at the expense of achieving the specified content the most stubborn of gas (oxygen O2or carbon dioxide CO2by changing the temperature of the hot water supplied to the deaerator. 1 Il.

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

Known equivalent means of vacuum deaeration of water, in which d is the water and the heating agent of the hot water, deaerated water away from the deaerator. Temperature control of the hot water supplied to the deaerator, produce the value of the specified residual dissolved oxygen content Of2in deaerated make-up water of 50 g/DM3control, control valve and sensor (see patent No. 2142417 (RU), IPC602 F 1/20. Method of vacuum deaeration of water / C. I. Sharapov, D. C., Cura // Bulletin of inventions, 1999, No. 34). This analog adopted as a prototype.

The disadvantage of analogs and prototypes is reduced efficiency of the way the vacuum deaeration of water due to the increased energy costs heating hot water and low quality thermal deaeration of water regulation at a given residual content of oxygen in the water. In some modes deaeration of the hydrogen of the acid water, for example, despite the required residual oxygen content Of2, regulatory quality deaeration is not achieved, because not ensured regulatory standards for removing carbon dioxide CO2as for removing it requires elevated temperature deaeration. On the other hand, the temperature control of peregrinatio, because, for example, when the deaeration of water treated by the methods of the sodium zeolite softening, to achieve the standard residual oxygen content requires a higher temperature of the hot water than to remove carbon dioxide. At the same time, in some modes, the temperature of the hot water may be superfluous to ensure regulatory quality deaeration. Thus, the existing disadvantages of the known method of vacuum deaeration of water lead to a decline in the quality and efficiency of thermal deaeration.

The technical result achieved by the present invention is to improve the quality and efficiency of the vacuum deaeration at the expense of achieving the specified content the most stubborn of gas (oxygen O2or carbon dioxide CO2by changing the temperature of the hot water supplied to the deaerator.

To achieve this result, a method of vacuum deaeration of water, which in the deaerator serves the source and the heated water from the deaerator assign deaerated water and steam, the temperature of the hot water adjust, given a residual content of oxygen in the deaerated water.

The difference of the proposed method is the carbon in deaerated water, moreover, the temperature of the hot water set based on the need to achieve a given content the most stubborn of gas.

A new method of deaeration of water can improve the quality and efficiency of the vacuum deaeration of water at the expense of achieving the specified content the most stubborn of gas (oxygen O2or carbon dioxide CO2by changing the temperature of the hot water supplied to the deaerator.

Next, consider the information, confirming the possibility of carrying out the invention with getting the required technical result.

The drawing shows a schematic diagram of the setup for vacuum deaeration of water, explanatory way.

The system includes a vacuum deaerator 1 pipelines raw water 2, the hot water 3, deaerated water 4 included in the piping hot water 3 hot water heater 5 with pipe heating medium 6. The plant is equipped with a controller 7, which on the one hand is connected with sensors dissolved oxygen 8 and the residual content of carbon dioxide 9 in deaerated make-up water, and on the other the actuator 10 of the regulatory body 11 on the pipeline is icroprocessor controller remikont P-130 - programmable device or an earlier or a later modification.

Consider the example of implementing the inventive method vacuum deaeration of water.

Make-up water heating system dearyou in vacuum deaerator 1, which in the deaerator serves the source and heated water. Heated water heated in the hot water heater 5. The temperature of the hot water set based on the need to achieve a given content the most stubborn of gas (oxygen O2or carbon dioxide CO2). Chemical water treatment method of the hydrogen-zeolite softening the source water is enriched with hydrogen ions H+(acidic environment), so using the controller 7, the sensors 8 and 9 and the actuator 10 with the regulator 11, the governing parameter is the temperature of the hot water set necessary to achieve a desired residual content of carbon dioxide in deaerated water (pH 8,33). When liming water source water is enriched with ions of HE-(alkaline environment) and in this case, by using the controller 7, the sensors 8 and 9 and the actuator 10 with the regulator 11 governing parameter is the temperature of the hot water mustache is egime gas dissolved oxygen in the deaerated water (50 g/DM3).

The number of thermal power plants water treatment plant contain structures at different times of the queue hydrogen-zeolite softening, sodium zeolite softening, liming. Depending on the total water consumption the amount of water supplied to the vacuum deaeration with different queues, can fluctuate significantly, and therefore, in accordance with the proposed method will be changed and the temperature of the hot water before deaerators. Note that the temperature of the hot water under the proposed method supports the minimum required to remove the most stubborn gas that provides both quality and efficiency vacuum deaeration.

Thus, the new method can improve the quality and efficiency of the vacuum deaeration of water at the expense of achieving the specified content the most stubborn of gas (oxygen O2or carbon dioxide CO2by changing the temperature of the hot water supplied to the deaerator.

Claims

Method of vacuum deaeration of water, which in the deaerator serves the source and the heated water from the deaerator assign DEA is an ode in deaerated water, characterized in that the temperature of the hot water at the same time regulate at the specified residual content of carbon dioxide in deaerated water, and the temperature of the hot water set on the basis of the need to achieve the specified content the most stubborn of gas.

 

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FIELD: natural gas industry.

SUBSTANCE: the invention is pertinent to the field of natural gas industry and may be used for the field preparation of products of gas condensate pools. The method provides for separation of a gas with a delivery and a low-temperature stage of separation, a phase separation of a condensate of a delivery and low-temperature stages of separation, degassing of a condensate and de-ethanization of a condensate in an evaporating rectifying column. The whole volume of a delivery stage of separation after a preliminary degassing and heating in a recuperative heat exchanger is fed into the middle part the evaporating rectifying column as a feeding. The condensate of the low-temperature stage of separation is divided into two streams. The first stream is fed into the upper part of the evaporating rectifying column as a sprinkling, the second stream is fed in the degasator. Adjustment of the technological mode and composition of products of de-ethanization depending on output and compositions of the condensate of the delivery and a low-temperature stages of separation is conducted by a change of volumes of the streams. The technical result is - maximum degree of separation of the de-ethanizated condensate at minimum losses with a dried gas.

EFFECT: the invention ensures maximum degree of separation of the de-ethanizated condensate at minimum losses with a dried gas.

1 dwg

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