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Boiler feed water deaeration method

A boiler feed water and deaeration tower technology, applied in separation methods, feed water heaters, chemical instruments and methods, etc., can solve the problems of insufficient steam utilization and poor deoxidation effect, so as to reduce energy consumption, save costs, improve The effect of utilization

Inactive Publication Date: 2019-03-08
SHANXI HEIMAO JIAOHUA CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of poor deoxygenation effect and insufficient steam utilization in the prior art, the present invention provides a boiler feed water deoxygenation method capable of fully exchanging heat between steam and water and ensuring the deoxygenation effect of outlet water

Method used

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Embodiment Construction

[0019] The technical solution of the present invention will now be further described in conjunction with the drawings and embodiments, but the present invention is not limited to the following implementation situations.

[0020] The boiler feed water deaeration treatment system of the present invention includes a medium-sized deaerator 1, a large-scale deaerator 4 and peripheral pipelines. The peripheral pipelines include methanol treatment water pipelines, high-pressure drainage pipelines, condensate water pipelines, desalinated water pipelines and steam pipelines. The medium-sized deaerator 1 can be one or more, and it can be increased or decreased according to the amount of treated water, such as figure 1 As shown, in this embodiment, there are 3 medium-sized deaerators 1 connected in parallel, and 3 medium-sized deaerators 1 and 1 large-scale deaerator 4 are connected in parallel, wherein the methanol treatment water pipeline, the high-pressure drain pipeline, and the conde...

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Abstract

The invention relates to a boiler feed water deaeration method. The boiler feed water deaeration method is characterized in that a steam inlet position and a steam inlet way are adjusted, and the distribution of the water feed position is adjusted according to water inlet temperature, so that high-temperature liquid enters a deaeration tower head from the lower part of low-temperature liquid, thelow-temperature liquid is subjected to secondary heating by using waste heat of the high-temperature liquid to realize deep deaeration, and then the high-temperature liquid is mixed with steam in a graded manner in a deaeration water tank, so that a small amount of residual oxygen ascends along with the steam to be completely separated from the high-temperature liquid to realize complete deaeration in effluent. The steam utilization rate and the deaeration efficiency in water are improved, the operation energy consumption of a deaeration system is reduced, and the boiler feed water deaerationmethod is especially suitable for inlet water with unstable components, unstable water quantities and unstable temperatures, and can effectively ensure that the deaeration is qualified and the deaeration system is stable to operate.

Description

technical field [0001] The invention belongs to the technical field of oxygen removal for thermal system feed water, and specifically provides an efficient oxygen removal method for boiler feed water. Background technique [0002] In order to prevent corrosion of thermal equipment and its pipelines, dissolved oxygen and other gases dissolved in boiler feed water must be removed to ensure safe operation and longer service life of thermal equipment. The principle of thermal oxygen removal is Henry's law and Dalton's law. For various gases dissolved in water, under a certain pressure, the higher the temperature of the water, the lower the solubility. Thermal deoxygenation is to use steam to heat the feed water to the saturation temperature under the corresponding pressure, the partial pressure of the steam will be close to the full pressure on the water surface, and the partial pressure of various gases dissolved in water will be close to zero, so the water will not have The a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22D1/50
CPCF22D1/50
Inventor 陈哲刚焦永波
Owner SHANXI HEIMAO JIAOHUA CO LTD
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