CN203683665U - Reagent adding device for preventing corrosion of water supply system - Google Patents
Reagent adding device for preventing corrosion of water supply system Download PDFInfo
- Publication number
- CN203683665U CN203683665U CN201320596541.6U CN201320596541U CN203683665U CN 203683665 U CN203683665 U CN 203683665U CN 201320596541 U CN201320596541 U CN 201320596541U CN 203683665 U CN203683665 U CN 203683665U
- Authority
- CN
- China
- Prior art keywords
- water
- reagent adding
- funnel
- water supply
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The utility model relates to the technical field of water supply of a power plant, and in particular relates to a reagent adding device for preventing corrosion of a water supply system. According to the reagent adding device, a reagent adding funnel is fixedly arranged at one side of a manhole; a rubber pipe connected to the bottom of the reagent adding funnel extends into the water side of a steam condenser. The reagent adding device is accurate in reagent adding amount; a reagent adding method is simple and easy to operate. Thus, in order to prevent a condensated water system, the water supply system, a coal economizer and the like from being corroded, a very reliable solution method is provided. Therefore, the safe running of a machine set is ensured. As a result, high economic benefits and indirect economic benefits are obtained.
Description
Technical field
The utility model relates to power plant's water-supply technology field, specifically relates to a kind of for preventing the chemicals dosing plant of water feeding system corrosion.
Background technology
Although feedwater is water purer in power plant, wherein also often contains a certain amount of oxygen and carbonic acid gas, these two kinds of gases are the principal elements that cause water feeding system metallic corrosion.Corrosion location usually occurs in condensate system, feedwater piping economizer etc. and locates.
Prevent the main chemical of water feeding system corrosion, be feedwater add hydrazine and ammonia treatment.
1. hydrazine can with feedwater in dissolved oxygen generation chemical reaction, generate nitrogen G&W, make in water
Oxygen be eliminated:
N
2H
4+O
2→N
2+?2H
2?O
The nitrogen that upper example reaction generates is a kind of very stable gas, to heat power equipment without any harm.In addition, hydrazine can slow down the formation of iron dirt or copper dirt in high-temperature water.
2. ammonia is soluble in water, and with water occur following react make water be alkalescence:
NH
3+?H
2?O→NH
4H?O
NH
4H?O→NH
+ 4+?H?O
-
If while containing carbonic acid gas in water, can and NH
4there is following reaction in OH:
NH
4H?O+CO
2→NH
4HCO
3
In the time that ammonia is excessive, the NH of generation
4hCO
3continue and NH
4oH reaction, obtains volatile salt:
NH
4H?O+?NH
4HCO
3→(NH
4)
2?CO
3+?H
2?O
Because ammoniacal liquor is alkalescence, carbonic acid gas or other acidic substance in energy and in water, so can improve the pH value of water.Ammonia has volatility, and while evaporation in pot with the feedwater after ammonia treatment, ammonia can be taken out of with steam again, the PH of condensate system is improved, thereby protected hardware.
At present the unit of normal operation all adopts feedwater automatic hydrazine adding and ammonia device, but in thermal power plant's Capital Construction Debugging stage, has that automatic medicine adding apparatus can not drop on time, dosing pipe exists the problems such as defect, thereby cannot carry out Automatic Dosing.
Summary of the invention
The purpose of this utility model is the deficiency existing for prior art, provides a kind of for preventing the chemicals dosing plant of water feeding system corrosion.
The utility model is a kind of to be achieved by following technical proposals for the chemicals dosing plant that prevents water feeding system corrosion: a kind of for preventing that the chemicals dosing plant that water feeding system is corroded from comprising circulating water outlet, steam-in, recirculated water entrance, bank of condenser pipes, main condensate outlet, dosing funnel, manhole, gas vapour mixture outlet, water side, rubber tubing, condenser, described chemicals dosing plant is to be fixedly installed dosing funnel in manhole one side, and funnel bottom connects rubber tubing and stretches into condenser water side.
The utility model is a kind of has following beneficial effect compared with prior art for the chemicals dosing plant that prevents water feeding system corrosion: the purpose of this utility model be in order to prevent from rinsing at water, tube blowing stage be owing to cannot carrying out effective dosing, cause the corrosion that condensate system, feedwater piping economizer etc. locate and provide a kind of for preventing the chemicals dosing plant of water feeding system corrosion.The utility model is a kind of accurate for preventing the chemicals dosing plant chemical feeding quantity of water feeding system corrosion, chemicals dosing plant is simple to operation, for preventing that the corrosion that condensate system, feedwater piping economizer etc. are located from providing a solution very reliably, guarantee unit safety operation, had very high economic benefit and indirect economic effect.
Accompanying drawing explanation
Fig. 1 is that the utility model is a kind of for preventing the chemicals dosing plant water feeding system structural representation of water feeding system corrosion.
Wherein: 1, circulating water outlet; 2, steam-in; 3, recirculated water entrance; 4, bank of condenser pipes; 5, main condensate outlet; 6, dosing funnel; 7, manhole; 8, gas vapour mixture outlet; 9, water side; 10, rubber tubing; 11, condenser; 12, filler cap.
Embodiment
Be further described for the chemicals dosing plant technical scheme that prevents water feeding system corrosion the utility model is a kind of below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of for preventing that the chemicals dosing plant of water feeding system corrosion from comprising circulating water outlet 1, steam-in 2, recirculated water entrance 3, bank of condenser pipes 4, main condensate outlet 5, dosing funnel 6, manhole 7, gas vapour mixture outlet 8, water side 9, rubber tubing 10, condenser 11, described chemicals dosing plant is to be fixedly installed dosing funnel 6 in manhole 7 one sides, and funnel 6 bottoms connect rubber tubing 10 and stretch into condenser water side 9.
Described dosing funnel 6 is by gemel connection filler cap 12.
For preventing from rinsing at water, tube blowing stage is owing to cannot carrying out effective dosing, the corrosion that causes condensate system, feedwater piping and economizer etc. to locate, has invented a kind of for preventing the chemicals dosing plant of water feeding system corrosion.
1. dosing method, stretches into condenser water side by manhole 7 by a conical hopper 6 with rubber tubing, as shown in Figure 1.
2. chemical feeding quantity control.
The small-scale test of 2.1 ammoniacal liquor chemical feeding quantities:
A. get a certain amount of de-mineralized water.
B. use down scale transfer pipet, in the de-mineralized water of having got, add ammoniacal liquor.
C. the pH value of the de-mineralized water of having got is adjusted to 8.8～9.3.
D. accurately read to the ammonia vol adding in de-mineralized water.
E. calculate the chemical feeding quantity of condenser.
The calculating of ammoniacal liquor chemical feeding quantity: V
(real ammonia)=V
(real water)× V
(examination ammonia)/ V
(examination water)
The small-scale test of 2.2 hydrazine chemical feeding quantities:
A. get a certain amount of de-mineralized water.
B. use down scale transfer pipet, in the de-mineralized water of having got, add hydrazine.
C. the pH value of the de-mineralized water of having got is adjusted to 10～50 μ g/L.
D. accurately read to the hydrazine amount adding in de-mineralized water.
E. calculate the chemical feeding quantity of condenser.
The calculating of hydrazine chemical feeding quantity: V
(real hydrazine)=V
(real water)× V
(examination hydrazine)/ V
(examination water).
In the situation that cannot carrying out Automatic Dosing, the utility model chemicals dosing plant adopts manual dosing method to provide a terms of settlement very reliably for preventing the corrosion that condensate system, feedwater piping and economizer etc. are located, guaranteed that unit safety effectively moves, economic benefit and indirect economic effect are all very high.
Claims (2)
1. the chemicals dosing plant for preventing that water feeding system from corroding, comprise circulating water outlet (1), steam-in (2), recirculated water entrance (3), bank of condenser pipes (4), main condensate outlet (5), dosing funnel (6), manhole (7), gas vapour mixture outlet (8), water side (9), rubber tubing (10), condenser (11), it is characterized in that: described chemicals dosing plant is to be fixedly installed dosing funnel (6) in manhole (7) one sides, funnel (6) bottom connects rubber tubing (10) and stretches into condenser water side (9).
2. according to claim 1 for preventing the chemicals dosing plant of water feeding system corrosion, it is characterized in that: described dosing funnel (6) is by gemel connection filler cap (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320596541.6U CN203683665U (en) | 2013-09-26 | 2013-09-26 | Reagent adding device for preventing corrosion of water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320596541.6U CN203683665U (en) | 2013-09-26 | 2013-09-26 | Reagent adding device for preventing corrosion of water supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203683665U true CN203683665U (en) | 2014-07-02 |
Family
ID=51005589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320596541.6U Expired - Fee Related CN203683665U (en) | 2013-09-26 | 2013-09-26 | Reagent adding device for preventing corrosion of water supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203683665U (en) |
-
2013
- 2013-09-26 CN CN201320596541.6U patent/CN203683665U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |