Device and method for purifying, deoxidizing and decarbonizing internal generator cooling water

A technology of cooling water and oxygen decarbonization, applied in the fields of chemistry, environmental technology and energy, which can solve problems such as difficult regeneration operations and lack of adjustable functions, and achieve effective reuse, avoid improper disposal, and reduce content.

Active Publication Date: 2014-03-05
WUHAN JIECHENG ELECTRIC POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current industry norms clearly state that it is not recommended to add corrosion inhibitors to control water quality, but the pH value of the internal cooling water obtained by using the above-mentioned various technologies has been determined by the mixing ratio of cation and anion exchange resins, and it does not have an adjustable function during operation , the regeneration operation is difficult

Method used

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  • Device and method for purifying, deoxidizing and decarbonizing internal generator cooling water

Examples

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Effect test

Embodiment 1

[0051] The specific steps of a method for purifying cooling water in a generator and removing oxygen and decarburization are as follows:

[0052] The inner cooling water first enters the independent RNa type cation exchange tower and RH type cation exchange tower to exchange copper ions in the inner cooling water. After the internal cooling water treated by the RNa type cation exchange tower is adjusted by the flow monitoring and adjusting device, it enters the first ROH type anion exchange tower; after the internal cooling water treated by the RH type cation exchange tower is adjusted by the flow monitoring and adjusting device, it enters The second ROH type anion exchange tower; the effluents of the two sets of ROH type anion exchange towers are confluenced so that the copper ion content in the inner cooling water is ≤20μg / L and the conductivity is 0.4~2.0μS / cm (25°C); The final internal cooling water uses PVDF hollow fiber separation membrane module to deoxygenate and decar...

Embodiment 2

[0054] The specific steps of a method for purifying cooling water in a generator and removing oxygen and decarburization are as follows:

[0055] The inner cooling water first enters the independent RNa type cation exchange tower and RH type cation exchange tower to exchange copper ions in the inner cooling water. After the internal cooling water treated by the RNa type cation exchange tower is adjusted by the flow monitoring and adjusting device, it enters the first ROH type anion exchange tower; after the internal cooling water treated by the RH type cation exchange tower is adjusted by the flow monitoring and adjusting device, it enters The second ROH type anion exchange tower; the effluents of the two sets of ROH type anion exchange towers are confluenced so that the copper ion content in the inner cooling water is ≤15μg / L, and the conductivity is ≤0.8μS / cm (25°C); and then the adjusted The inner cooling water adopts inorganic ceramic separation membrane module to deoxygen...

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Abstract

The invention relates to a device and a method for purifying, deoxidizing and decarbonizing internal generator cooling water. The device provided by the invention comprises an internal generator cooling water purifying unit and a two-stage membrane deoxidizing and decarbonizing unit, wherein the internal cooling water purifying unit is composed of an RNa type cation exchange tower, an RH type cation exchange tower, a first ROH type anion exchange tower, a second ROH type anion exchange tower, a precise resin trap, a flow regulation and control system and a water quality monitoring system; the two-stage membrane deoxidizing and decarbonizing unit is composed of an intermediate water tank, a circulating water pump, a compressed inert gas system, a gas-liquid membrane two-stage separation system, a gas monitoring system and a booster water pump. The device and the method provided by the invention are used for directly or indirectly and comprehensively regulating and controlling such indexes of internal cooling water as pH value, conductivity, copper content, dissolved oxygen and the like so as to prevent the corrosion of a generator copper conductor and ensure the safe and stable operation of a generating set.

Description

technical field [0001] The invention relates to the fields of chemistry and environmental technology and energy technology, in particular to a device and method for purifying cooling water in a generator and removing oxygen and decarbonization. Background technique [0002] The corrosion of large generator coil copper wire mainly depends on the water quality of the internal cooling water. The supplementary water for internal cooling water is generally the desalinated water of the power plant. The conductivity of the desalinated water is low, and it contains saturated dissolved oxygen and carbon dioxide. Corrosion occurs in the copper wire coil; the latter will cause the pH of the desalinated water to drop, making the copper in a chemically unstable corrosion zone, and accelerating the corrosion of the copper wire. [0003] At present, the probability of major equipment failure due to poor cooling water quality in generators has attracted great attention in the industry. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
Inventor 谭德明
Owner WUHAN JIECHENG ELECTRIC POWER TECH
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