CN101608882B - Method for cleaning copper tubes of condenser - Google Patents
Method for cleaning copper tubes of condenser Download PDFInfo
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- CN101608882B CN101608882B CN200910102685XA CN200910102685A CN101608882B CN 101608882 B CN101608882 B CN 101608882B CN 200910102685X A CN200910102685X A CN 200910102685XA CN 200910102685 A CN200910102685 A CN 200910102685A CN 101608882 B CN101608882 B CN 101608882B
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Abstract
A method for cleaning copper tubes of a condenser relates to the cleaning of heat transfer pipelines. The method comprises the following steps: the first step, closing an inlet valve and an outlet valve of circulating water after a turbine condenser is shut down; the second step, flushing the copper tubes of the condenser with clean water; the third step, injecting acid chemical cleaning liquor at water side of the condenser for soak cleaning; the fourth step, neutralizing soak solution with sodium hydroxide; the fifth step, flushing the copper tubes of the condenser with clean water; the sixth step, rinsing the copper tubes of the condenser with clean water; and the seventh step, replacing membrane, and commissioning after cleaning. Compared with the original method of cleaning with chemical agents to be added to a circulating water tank, the method is characterized in that chemical cleaning liquor is added to a single turbine condenser, which can help clean fouling off the copper tubes and improve vacuum degree of the turbine while ensuring no corrosion of the copper tubes, and has the advantages of low agent consumption, low cost, low corrosion rate, good cleaning effect and saving cleaning time. The method can be widely applied to cleaning and maintenance of the copper tubes of the condensers in power plants.
Description
Technical field
The present invention relates to the cleaning of heat transfer pipe, furthermore, relate to the method that condenser copper tube cleans.
Background technology
At present, the cleaning method of condenser copper tube generally carries out chemical treatment in circulation, adds snack made with traditional Chinese medicines and all is provided in a side of circulating water pool.Condenser copper tube arrival end temperature is low, corrodes copper pipe, the high easily incrustation of port of export temperature easily.Be starting point all when recirculated water carries out chemical treatment to guarantee that copper pipe is not corroded, like this time grown copper pipe will incrustation, condenser heat exchange deleterious, vacuum reduction.
In recent years, people have developed some technology of cleaning condenser copper tube with robot, for example No. 200510037864.1 " on-line cleaning power plant steam condenser using high pressure water jet device people technology " of Chinese patent application part, No. 200610032360.5 " two joint type online cleaning robot for condenser copper tube ", No. 200810143704.9 " condenser intelligent movable cleaning robots " etc.These technical schemes all have the function of cleaning condenser copper tube, but the development of robot needs a large amount of funds, and it is also very high to clean cost.
Summary of the invention
The purpose of this invention is to provide the method that a kind of condenser copper tube cleans, can either clean condenser copper tube quickly and effectively, improve the heat transfer efficiency of condenser copper tube, do not make it be subjected to heavy corrosion again.
For realizing this purpose, the condenser copper tube cleaning method that the inventor provides may further comprise the steps:
The first step, after turbine condenser was shut down, the recirculated water of closing the separate unit condenser was into and out of water valve;
In second step, wash condenser copper tube with clear water;
The 3rd step, inject the acidic chemical cleaning fluid to condenser water side, carry out soaking and washing;
In the 4th step, use in the caustic soda and soak;
In the 5th step, wash condenser copper tube with clear water;
The 6th step is with clear water rinsing condenser copper tube;
The 7th step, put film in advance, cleaning finishes, and can put into operation.
In the 3rd step of said method, the prescription of acidic chemical cleaning fluid is: restrainer 0.3%, copper inhibitor 0.1%, bleeding agent 100mg/L, chemical 6.0%, dispersant 200mg/L; Soak time is 6 hours, and soaking temperature is 30 ℃～40 ℃.
Above-mentioned restrainer is commercially available prod Lan-826; Above-mentioned copper inhibitor is the commercially available prod tolyl-triazole, and above-mentioned bleeding agent is commercially available prod JFC, and above-mentioned chemical is a sulfamic acid, and above-mentioned dispersant is polyacrylic acid PAA.
Said method is in the 4th step, with being recovered to circulating water pool with soak after pH value 6～7 in the caustic soda.
In the 5th step of said method, the time of washing condenser copper tube with clear water is 1 hour.
In the 6th step of said method, with time of clear water rinsing condenser copper tube be 0.5 hour.
In the 7th step of said method, the film of inserting in advance is Cu
2O (cuprous oxide).
The method that a kind of condenser copper tube provided by the invention cleans adds chemical agent to original to circulating water pool, change into to the single steam turbine condenser and add the chemical cleaning solution cleaning, can not corrode under the prerequisite of copper pipe in assurance, dirt in the copper pipe is cleaned up, improve the steam turbine vacuum degree, cost is low less, corrosion rate is low, cleaning performance good, wash few advantage consuming time to have the with medicament of making.This method can be widely used in the cleaning and maintenance of plant condenser copper pipe.
Description of drawings
Accompanying drawing is the cleaning FB(flow block) of condenser copper tube.
Among the figure, 1 is condenser, and 2 is the recirculated water water intaking valve, and 3 is the recirculated water outlet valve, and 4 is blowoff valve, and 5 is dosing pump, and 6 is Rubber ball pump, and 7 is Scatula.
The specific embodiment
Embodiment this method is applied in the dynamics factory of Wengfu Group Co., Ltd., and this factory's turbine steam condenser copper tube is cleaned.
At first, after turbine condenser is shut down, close recirculated water water intaking valve 2, the outlet valve 3 of certain separate unit condenser 1;
In second step, washed condenser 1 copper pipe 1 hour with clear water;
The 3rd step, inject the acidic chemical cleaning fluid to condenser 1 water side, its prescription is restrainer Lan-826 0.3%, copper inhibitor tolyl-triazole 0.1%, penetrating agent JFC 100mg/L, chemical sulfamic acid 6.0%, dispersant polyacrylic acid PAA 200mg/L carried out soaking and washing 6 hours;
The 4th the step, with in the soda bath with soak to pH value to 6.0～7.0;
In the 5th step, washed condenser 1 copper pipe 1 hour with clear water;
In the 6th step, use clear water rinsing condenser 1 copper pipe 0.5 hour;
In the 7th step, put Cu in advance
2O (cuprous oxide) film, cleaning finishes, and can put into operation.
Claims (7)
1. the condenser copper tube method of cleaning, its feature may further comprise the steps:
The first step, after turbine condenser was shut down, the recirculated water of closing the separate unit condenser was into and out of water valve;
In second step, wash condenser copper tube with clear water;
The 3rd step, inject the acidic chemical cleaning fluid to condenser water side, carry out soaking and washing;
In the 4th step, use in the caustic soda and soak;
In the 5th step, wash condenser copper tube with clear water;
The 6th step is with clear water rinsing condenser copper tube;
The 7th step, put film in advance, cleaning finishes, and puts into operation.
2. the method for claim 1 is characterized in that the prescription of acidic chemical cleaning fluid described in the 3rd step is: restrainer 0.3%, copper inhibitor 0.1%, bleeding agent 100mg/L, chemical 6.0%, dispersant 200mg/L; Soak time is 6 hours, and soaking temperature is 30 ℃～40 ℃.
3. method as claimed in claim 2 is characterized in that described restrainer is commercially available prod Lan-826; Described copper inhibitor is the commercially available prod tolyl-triazole, and described bleeding agent is commercially available prod JFC, and described chemical is a sulfamic acid, and described dispersant is polyacrylic acid PAA.
4. the method for claim 1 is characterized in that in the 4th step, with being to be recovered to circulating water pool after 6～7 with soak to the pH value in the caustic soda.
5. the method for claim 1 is characterized in that the time of washing condenser copper tube with clear water is 1 hour in the 5th step.
6. the method for claim 1 is characterized in that the time with clear water rinsing condenser copper tube is 0.5 hour in the 6th step.
7. the method for claim 1 is characterized in that the film of inserting in advance is a cuprous oxide in the 7th step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910102685XA CN101608882B (en) | 2009-07-22 | 2009-07-22 | Method for cleaning copper tubes of condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910102685XA CN101608882B (en) | 2009-07-22 | 2009-07-22 | Method for cleaning copper tubes of condenser |
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| CN101608882A CN101608882A (en) | 2009-12-23 |
| CN101608882B true CN101608882B (en) | 2010-12-01 |
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| CN200910102685XA Active CN101608882B (en) | 2009-07-22 | 2009-07-22 | Method for cleaning copper tubes of condenser |
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| CN102303029A (en) * | 2011-07-15 | 2012-01-04 | 浙江开化同力电子科技有限公司 | Method for cleaning cooling water pipeline used for transformer |
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| CN103510097B (en) * | 2012-06-26 | 2016-02-17 | 杭州冠洁工业清洗水处理科技有限公司 | Condenser low corrosion high cleanliness chemical cleaning method |
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| CN104624574A (en) * | 2015-02-15 | 2015-05-20 | 苏州鸿普精密模具有限公司 | Chemical cleaning machine for automobile condensers |
| CN104962926A (en) * | 2015-06-13 | 2015-10-07 | 陈新棠 | Copper pipe cleaning agent |
| CN104962933A (en) * | 2015-07-29 | 2015-10-07 | 福建福晶科技股份有限公司 | Cleaning method of induction coil |
| CN106367762B (en) * | 2016-08-29 | 2018-11-06 | 西安协力动力科技有限公司 | Thermal power plant condenser formic acid complex cleaning and washing agent |
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| CN109848123A (en) * | 2019-01-30 | 2019-06-07 | 国电泉州热电有限公司 | A kind of ammonia station chemical cleaning method |
| CN110081768B (en) * | 2019-06-06 | 2020-10-30 | 大唐东营发电有限公司 | Descaling method for condenser of power plant |
| CN111256516A (en) * | 2019-12-24 | 2020-06-09 | 常熟浦发第二热电能源有限公司 | Online cleaning method for open-type circulating condenser |
| CN113249731B (en) * | 2021-05-28 | 2022-09-09 | 西安热工研究院有限公司 | Chemical cleaning agent for copper scale in generator inner cooling water system |
| CN115007573A (en) * | 2022-06-07 | 2022-09-06 | 仇什 | Soaking type cleaning process for water pipeline |
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Address after: 550500 Guizhou Province, Qiannan Buyei and Miao Autonomous Prefecture Fuquan Racecourse town Yingbin Road No. 1 Wengfu group Patentee after: WENGFU GROUP Co.,Ltd. Address before: 23, 550002 floor, International Building, No. 57, South City Road, Nanming District, Guiyang, Guizhou Patentee before: WENGFU GROUP Co.,Ltd. |
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