CN101955290A - Scale removing and inhibiting method for condenser in power plant - Google Patents
Scale removing and inhibiting method for condenser in power plant Download PDFInfo
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- CN101955290A CN101955290A CN 201010279326 CN201010279326A CN101955290A CN 101955290 A CN101955290 A CN 101955290A CN 201010279326 CN201010279326 CN 201010279326 CN 201010279326 A CN201010279326 A CN 201010279326A CN 101955290 A CN101955290 A CN 101955290A
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Abstract
The invention discloses a scale removing and inhibiting method for a condenser in a power plant. The method comprises the following steps of: (1) physical water treatment, namely arranging an electromagnetic water treater on a water inlet pipe of the condenser in the power plant, and ensuring the normal operation of the electromagnetic water treater in the operating process of the condenser; and (2) green chemical water treatment, namely simultaneously adding 0.5 to 4mg/L polyaspartic acid or epoxysuccinic acid and 0.05 to 2mg/L sodium dodecyl benzene sulfonate into inlet water of cooling water. In the method, the physical (electronic) water treatment is combined with the green chemical water treatment organically, so the scale removing effect is good; simultaneously, a little amount of green scale inhibitor is adopted instead of phosphorus-containing scale inhibitor and the green scale inhibitor has the characteristics of safety, non-toxicity and degradability; and therefore, the method is green water treatment technology and can be used for scale removal and scale prevention of various condensers in the power plant.
Description
Technical field
The present invention relates to a kind of method of plant condenser being carried out green scale removal and scale inhibition by physics, chemical process.
Technical background
, cooling water source is generally directly taken near the natural water the power plant, as Yi Jiang, river, lake, sea, underground water etc. as the water source.Condenser is in operational process; reasons such as evaporation concentration owing to water coolant; the deposition of inorganic scale classes such as calcium magnesium will take place at heat exchange surface; have a strong impact on the heat exchanger effectiveness of condenser; usually adopt the chemical scale-inhibiting agent to prevent the deposition of separating out of these inorganic scale classes, and remove sedimentary incrustation scale by the method for shutting down matting at heat exchange surface.Scale inhibitors commonly used has: poly-phosphate, organic phospho acid, poly carboxylic acid, phosphorus carboxylic acid, organic phospho acid fat etc.
Summary of the invention
Technical problem to be solved by this invention provides a kind of scale removal and method of scale inhibition of green plant condenser, present method can effectively be removed the old dirt of plant condenser heat exchange surface, prevent the formation of new dirt simultaneously, and substitute phosphorous Scale inhibitors with a small amount of green scale inhibitor, safety non-toxic, degradable is a kind of green treatment of cooling water technology.
Technical solution of the present invention:
(1) mechanical water is handled
The electromagnetic water treatment device is installed in the plant condenser water inlet pipe, should guarantees in the condenser operational process that the electromagnetic water treatment device normally moves;
(2) Green Chemistry water treatment
Adding simultaneously concentration and be 0.5-4mg/L poly aspartic acid or Epoxysuccinic acid and concentration in the water coolant water inlet is the Sodium dodecylbenzene sulfonate of 0.05-2 mg/L.
2, according to the scale removal and the method for scale inhibition of the described a kind of plant condenser of claim 1, it is characterized in that: need timely blowdown when in the condenser of more old dirt is arranged, moving.
3. according to the scale removal and the method for scale inhibition of claim 1 or 2 described a kind of plant condensers, it is characterized in that: described electromagnetic water treatment device is made up of dc pulse generator and external emf sensor two portions.
4. according to the scale removal and the method for scale inhibition of the described a kind of plant condenser of claim 3, it is characterized in that: the key technical indexes of described electromagnetic water treatment device is:
Power supply: alternating current 220V, 50Hz
Operating voltage: direct current 15V
Output rating: 120W
Frequency conversion scope: 20Hz～75KHz
Carrier frequency frequency: 1MHz.
Beneficial effect of the present invention, the present invention organically combines physics (electronics) water treatment and Green Chemistry water treatment, descaling, and blocking scaling is effective, adopt a small amount of green scale inhibitor to substitute phosphorous Scale inhibitors simultaneously, safety non-toxic, degradable is a kind of green water technology, can be applicable to the descaling and antiscaling of all kinds of plant condensers.
Description of drawings
Fig. 1 is the principle schematic of electronic hydrotreater.
Embodiment
Below by embodiment the present invention is described in further detail, carries out the scale removal and the antiscale of plant condenser, comprise mechanical water processing and two modules of Green Chemistry water treatment:
(1) mechanical water is handled
Adopt frequency conversion DC pulse electromagnetism water treating device, this water treating device is made up of dc pulse generator and external emf sensor two portions, wherein dc pulse generator is a main body, inner by power supply, electric power board, micro computer plate, function etc. totally four parts form.On the panel of tool housing, reometer is installed, can shows outward current.Instrument directly by exchanging as power supply, has a plurality of output wiring terminals, corresponds respectively to DC pulse output terminal and negative contacts, and Fig. 1 is the principle schematic of electronic hydrotreater.This water treating device the key technical indexes is as follows:
Power supply: alternating current 220V, 50Hz
Operating voltage: direct current 15V
Output rating: 120W
Frequency conversion scope: 20Hz ~ 75KHz
Carrier frequency frequency: 1MHz
(2) Green Chemistry water treatment
Adding the Green Chemistry Scale inhibitors simultaneously in the water coolant water inlet, for example is that concentration is 0.5-4mg/L poly aspartic acid or Epoxysuccinic acid, adds the Sodium dodecylbenzene sulfonate that concentration is 0.05-2 mg/L simultaneously.In operational process, cause local the obstruction at the condenser that more old dirt is arranged, need in time carry out blowdown in order to prevent that old dirt from coming off.
Embodiment 1:
The condenser water inlet is tap water, and see Table 1 main the composition.
Table 1 experiment is mainly formed with tap water
Experimental temperature: 45 ℃.
Method of scale inhibition:
Mechanical water is handled and the Green Chemistry Scale inhibitors is united use, wherein (1) mechanical water treater is made up of dc pulse generator and external emf sensor two portions, the key technical indexes: use alternating current 220V, the 50Hz power supply, operating voltage 24V, output rating 180W, frequency conversion scope 20Hz ~ 75KHz, the carrier frequency frequency is 1MHz.(2) the Green Chemistry Scale inhibitors adopts poly aspartic acid, working concentration 0.5mg/L and Sodium dodecylbenzene sulfonate 0.05 mg/L
Scale inhibition effect: by the lacing film experiment, scale inhibition performance is 96.8%.
Descale effect: the clearance to the old dirt of 0.5mm is 94.4%.
Embodiment 2:
The condenser water inlet is tap water, and see Table 1 main the composition.
Experimental temperature: 45 ℃.
Method of scale inhibition:
Mechanical water is handled and the Green Chemistry Scale inhibitors is united use, wherein (1) mechanical water treater is made up of dc pulse generator and external emf sensor two portions, the key technical indexes: use alternating current 220V, the 50Hz power supply, operating voltage 24V, output rating 180W, frequency conversion scope 20Hz ~ 75KHz, the carrier frequency frequency is 1MHz.(2) the Green Chemistry Scale inhibitors adopts poly aspartic acid, working concentration 2mg/L and Sodium dodecylbenzene sulfonate 1 mg/L.
Scale inhibition effect: by the lacing film experiment, scale inhibition performance is 98.1%.
Descale effect: the clearance to the old dirt of 0.5mm is 95.7%.
Embodiment 3:
The condenser water inlet is tap water, and see Table 1 main the composition.
Experimental temperature: 45 ℃.
Method of scale inhibition:
Mechanical water is handled and the Green Chemistry Scale inhibitors is united use, wherein (1) mechanical water treater is made up of dc pulse generator and external emf sensor two portions, the key technical indexes: use alternating current 220V, the 50Hz power supply, operating voltage 24V, output rating 180W, frequency conversion scope 20Hz ~ 75KHz, the carrier frequency frequency is 1MHz.(2) the Green Chemistry Scale inhibitors adopts poly aspartic acid, working concentration 4mg/L and Sodium dodecylbenzene sulfonate 2 mg/L
Scale inhibition effect: by the lacing film experiment, scale inhibition performance is 99.4%.
Descale effect: the clearance to the old dirt of 0.5mm is 97.2%.
Embodiment 4:
The condenser water inlet is the Shanghai surface water.
Experimental temperature: 45 ℃.
Method of scale inhibition:
Mechanical water is handled and the Green Chemistry Scale inhibitors is united use, wherein (1) mechanical water treater is made up of dc pulse generator and external emf sensor two portions, the key technical indexes: use alternating current 220V, the 50Hz power supply, operating voltage 24V, output rating 180W, frequency conversion scope 20Hz ~ 75KHz, the carrier frequency frequency is 1MHz.(2) the Green Chemistry Scale inhibitors adopts poly aspartic acid, working concentration 2mg/L and Sodium dodecylbenzene sulfonate 1 mg/L.。
Scale inhibition effect: by the lacing film experiment, scale inhibition performance is 97.9%.
Descale effect: the clearance to the old dirt of 0.5mm is 96.3%.
Embodiment 5:
The condenser water inlet is tap water, and see Table 1 main the composition.
Experimental temperature: 45 ℃.
Method of scale inhibition:
Mechanical water is handled and the Green Chemistry Scale inhibitors is united use, wherein (1) mechanical water treater is made up of dc pulse generator and external emf sensor two portions, the key technical indexes: use alternating current 220V, the 50Hz power supply, operating voltage 24V, output rating 180W, frequency conversion scope 20Hz ~ 75KHz, the carrier frequency frequency is 1MHz.(2) the Green Chemistry Scale inhibitors adopts Epoxysuccinic acid, working concentration 0.5mg/L and Sodium dodecylbenzene sulfonate 0.05 mg/L.
Scale inhibition effect: by the lacing film experiment, scale inhibition performance is 93.2%.
Descale effect: the clearance to the old dirt of 0.5mm is 91.6%.
Embodiment 6:
The condenser water inlet is tap water, and see Table 1 main the composition.
Experimental temperature: 45 ℃.
Method of scale inhibition:
Mechanical water is handled and the Green Chemistry Scale inhibitors is united use, wherein (1) mechanical water treater is made up of dc pulse generator and external emf sensor two portions, the key technical indexes: use alternating current 220V, the 50Hz power supply, operating voltage 24V, output rating 180W, frequency conversion scope 20Hz ~ 75KHz, the carrier frequency frequency is 1MHz.(2) the Green Chemistry Scale inhibitors adopts Epoxysuccinic acid, working concentration 2mg/L and Sodium dodecylbenzene sulfonate 1mg/L.
Scale inhibition effect: by the lacing film experiment, scale inhibition performance is 97.8%.
Descale effect: the clearance to the old dirt of 0.5mm is 96.2%
Embodiment 7:
The condenser water inlet is tap water, and see Table 1 main the composition.
Experimental temperature: 45 ℃.
Method of scale inhibition:
Mechanical water is handled and the Green Chemistry Scale inhibitors is united use, wherein (1) mechanical water treater is made up of dc pulse generator and external emf sensor two portions, the key technical indexes: use alternating current 220V, the 50Hz power supply, operating voltage 24V, output rating 180W, frequency conversion scope 20Hz ~ 75KHz, the carrier frequency frequency is 1MHz.(2) the Green Chemistry Scale inhibitors adopts Epoxysuccinic acid, working concentration 4mg/L and Sodium dodecylbenzene sulfonate 2 mg/L.
Scale inhibition effect: by the lacing film experiment, scale inhibition performance is 99.3%.
Descale effect: the clearance to the old dirt of 0.5mm is 98.4%.
Electronic water is processed in the present invention and the Green Chemistry water treatment organically combines, and is used for preventing the deposition of plant condenser heat-exchange surface inorganic scale class, and can removes established old dirt, thereby increase substantially the heat exchanger effectiveness of condenser. Compare with traditional method of chemical treatment, this technology descaling, and blocking scaling is effective, adopts simultaneously a small amount of green scale inhibitor to substitute P containing sludge inhibitor, safety non-toxic, and degradable is a kind of Cycle Cool Water Treatment of green.
Described content only is the basic explanation of the present invention under conceiving, and according to any equivalent transformation that technical scheme of the present invention is done, all should belong to protection scope of the present invention.
Claims (4)
1. the scale removal of a plant condenser and method of scale inhibition comprise following two steps:
(1) mechanical water is handled
The electromagnetic water treatment device is installed in the plant condenser water inlet pipe, should guarantees in the condenser operational process that the electromagnetic water treatment device normally moves;
(2) Green Chemistry water treatment
Adding concentration simultaneously in the water coolant water inlet is 0.5-4mg/L poly aspartic acid or Epoxysuccinic acid and Sodium dodecylbenzene sulfonate 0.05-2 mg/L.
2. according to the scale removal and the method for scale inhibition of the described a kind of plant condenser of claim 1, it is characterized in that: need timely blowdown when in the condenser of more old dirt is arranged, moving.
3. according to the scale removal and the method for scale inhibition of claim 1 or 2 described a kind of plant condensers, it is characterized in that: described electromagnetic water treatment device is made up of dc pulse generator and external emf sensor two portions.
4. according to the scale removal and the method for scale inhibition of the described one one kinds of plant condensers of claim 3, it is characterized in that: the key technical indexes of described electromagnetic water treatment device is:
Power supply: alternating current 220V, 50Hz
Operating voltage: direct current 15V
Output rating: 120W
Frequency conversion scope: 20Hz～75KHz
Carrier frequency frequency: 1MHz.
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| CN 201010279326 CN101955290A (en) | 2010-09-13 | 2010-09-13 | Scale removing and inhibiting method for condenser in power plant |
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| CN 201010279326 CN101955290A (en) | 2010-09-13 | 2010-09-13 | Scale removing and inhibiting method for condenser in power plant |
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| CN101955290A true CN101955290A (en) | 2011-01-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261576A (en) * | 2014-09-30 | 2015-01-07 | 北京建筑材料科学研究总院有限公司 | Scale inhibiting and preventing method and device for ash washing water in crystallizing evaporator |
| TWI468520B (en) * | 2012-01-31 | 2015-01-11 | China Steel Corp | Method for treating cooling water of cooling system |
| CN107062929A (en) * | 2017-05-02 | 2017-08-18 | 东北电力大学 | The purpose sweep frequency electromagnetic scale suppression system and its combustion adjustment method of power station water-cooled condenser |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548387A (en) * | 2003-05-22 | 2004-11-24 | 上海电力学院 | Water quality stabilizer for circular cooling water in condesing unit of power plant |
| CN101315253A (en) * | 2008-07-21 | 2008-12-03 | 张贵祥 | Cooling water shortcut circulation energy conservation and emission reduction technology |
-
2010
- 2010-09-13 CN CN 201010279326 patent/CN101955290A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548387A (en) * | 2003-05-22 | 2004-11-24 | 上海电力学院 | Water quality stabilizer for circular cooling water in condesing unit of power plant |
| CN101315253A (en) * | 2008-07-21 | 2008-12-03 | 张贵祥 | Cooling water shortcut circulation energy conservation and emission reduction technology |
Non-Patent Citations (1)
| Title |
|---|
| 《腐蚀与防护》 20090930 葛红花等 电厂热力设备防腐蚀技术研究进展 611-619 1-4 第30卷, 第9期 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI468520B (en) * | 2012-01-31 | 2015-01-11 | China Steel Corp | Method for treating cooling water of cooling system |
| CN104261576A (en) * | 2014-09-30 | 2015-01-07 | 北京建筑材料科学研究总院有限公司 | Scale inhibiting and preventing method and device for ash washing water in crystallizing evaporator |
| CN107062929A (en) * | 2017-05-02 | 2017-08-18 | 东北电力大学 | The purpose sweep frequency electromagnetic scale suppression system and its combustion adjustment method of power station water-cooled condenser |
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Application publication date: 20110126 |