CN103175440A - Off-line physical chemistry cleaning method used for splash packing of power station cooling tower - Google Patents
Off-line physical chemistry cleaning method used for splash packing of power station cooling tower Download PDFInfo
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- CN103175440A CN103175440A CN2012100316058A CN201210031605A CN103175440A CN 103175440 A CN103175440 A CN 103175440A CN 2012100316058 A CN2012100316058 A CN 2012100316058A CN 201210031605 A CN201210031605 A CN 201210031605A CN 103175440 A CN103175440 A CN 103175440A
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Abstract
The invention relates to an off-line physical chemistry cleaning method used for a splash packing of a power station cooling tower. The off-line physical chemistry cleaning method used for the splash packing of the power station cooling tower is mainly used for soaking a polypropylene splash packing or a polyvinyl chloride packing of the power station cooling tower by manufactured acid cleaning liquid or power station acid liquid, and then cleaning the polypropylene splash packing or the polyvinyl chloride packing repeatedly to be neutral with a certain amount of medium-pressure water jet with the water pressure within the range of 0.5MPa and 0.8 MPa, and a contourgraph is used for checking the packings which are cleaned. When molecules of unit area of a single packing is no more than 100, a cleaning effect is achieved, and finally, the packing is installed and reset again. The off-line physical chemistry cleaning method used for the splashing packing of the power station cooling tower can effectively clean every packing, improve the cleaning rate and prolong the service life of the packing, and brand new appearance of the packing is restored. Meanwhile, the method is simple in operation, small in acid dosage, low in cost, economic, environment-friendly, capable of effectively maintaining cooling effect of the power station cooling tower, and capable of improving generating efficiency; and raw materials are common and easy to get, and erosion to a cooling tower main body, a water distribution groove (pipe), a water collecting tank and the like does not happen.
Description
Technical field
The present invention relates to a kind of cleaning technique of cooling tower soaking filler, particularly relate to a kind of clean rate and service life of improving filler, the off-line Physical Chemical Cleaning method that is used for the Cooling Tower of Power Station packing of the brand-new looks of reduction filler.
Background technology
Cooling tower is power station circulating water natural one of the three large buildings in cooling a kind of structures, particularly thermal power project of ventilating, one of important cold-end equipment of steam turbine power generation unit especially, and its cooling performance quality is directly connected to economy and the safe operation in power station.Can find out from the structure of cooling tower, packing is one of principal element that affects cooling performance, and liquid distribution is comprised of S ripple or bias ripple filler, water collection device and shower nozzle.Packing is that water in cooling tower, gas two-phase are conducted heat, the usefulness core of mass transfer, is the primary clustering that affects cooling tower thermal performance.The water circulation system of cooling tower is a kind of open type cooling system, dust and other impurities is easy to enter, and cooling water constantly recycles in the circulatory system, because the temperature of water raises, the comprehensive function of the concentrated and many factors such as device structure and material of the variation of water velocity and evaporation of water, various inorganic ions and organic substance, can produce the deposit even more serious than straight-flow system and adhere to microorganism and grow in a large number, and the foundry loam dirt that forms thus stops up the problems such as filler.Traditional online Chemical cleaning directly adopts the high concentration pickling to add the method for corrosion inhibiter mostly, this technology can produce heavy corrosion to cooling tower body, liquid distribution distribution channel (pipe), collecting-tank etc., and packing clean the chemical cost amount such as unclean, sour large, clean that cost is high, the improper problem such as environment that pollutes of pickle liquor discharging.
Summary of the invention
For the problems referred to above, main purpose of the present invention is to provide a kind of clean rate and service life of improving filler, the off-line Physical Chemical Cleaning method that is used for the Cooling Tower of Power Station packing of the brand-new looks of reduction filler.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of off-line Physical Chemical Cleaning method for the Cooling Tower of Power Station packing said method comprising the steps of:
(1) prepare at normal temperatures a certain amount of acidic cleaning solution, the proportion of acidic cleaning solution formula nitric acid and water is 15%: 85% to 30%: 70% (mass percent), or acidic cleaning solution utilizes the acid pickle in power station;
(2) vacant lot is put into acidic cleaning solution or the acid pickle that step (1) prepares, soak time 60-120 minute to the polypropylene or the polyvinyl chloride packing that remove outside cooling tower inner platform or tower;
(3) take out in step (2) through acidic cleaning solution or the soaked polypropylene of acid pickle or polyvinyl chloride packing, during water carries out back and forth, pressure water jet cleans, spray hydraulic pressure 0.5-0.8MPa, reciprocal time 5-10 time, and with the pH test paper, the water that drips around filler is tested, until be shown as neutrality;
(4) filler that has cleaned with the contourgraph inspection, contourgraph multiplication factor used are 15-20 times, and the molecule number on monolithic polypropylene or polyvinyl chloride packing unit are is not more than 100/m
2, reach cleaning performance;
The filler that (5) will reach the cleaning standard is reinstalled and is resetted.
In specific embodiments of the invention, described step (1) acidic cleaning solution formula is that the proportion of nitric acid and water is 20%: 80% to 25%: 75% (mass percent).
In specific embodiments of the invention, described step (2) is 90 minutes with the acidic cleaning solution or the acid pickle soak time that prepare.
In specific embodiments of the invention, described step (3) through packing that acidic cleaning solution soaked again with in pressure water jet to carry out reciprocal wash number be 8 times, spray hydraulic pressure 0.6MPa.
In specific embodiments of the invention, the molecule number on the monolithic filler unit are after described step (4) is cleaned with the contourgraph inspection is less than 90/m
2, the contourgraph multiplication factor is 18 times.
Positive progressive effect of the present invention is: the off-line Physical Chemical Cleaning method for the Cooling Tower of Power Station packing provided by the invention has the following advantages:
(1) cleaning method is simple, cleaning step is clear, can realize that the cleaning refitting of filler resets in batches;
(2) cleanliness factor is high, capable of washingly falls dirt and the foundry loam that is difficult to remove in cooling tower polypropylene or polyvinyl chloride packing, guarantees cooling effect normal, need of production;
(3) the cleaning fluid raw material is simple, and consumption is few, and cost is low, economic environmental protection, and power station acid pickle secondary utilizes, and saves maintenance cost, has larger potential benefit;
(4) cleaning method has good protection effect to filler, can extend the service life of filler, and can not produce corrosion to cooling tower body, liquid distribution distribution channel (pipe), collecting-tank etc.;
(5) method of inspection is simple and practical, can effectively guarantee the cleanliness factor requirement of cooling tower filler.
Description of drawings
Fig. 1 is process flow chart of the present invention.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
Fig. 1 is process flow chart of the present invention, as shown in Figure 1: the present invention includes following steps:
(1) prepare at normal temperatures a certain amount of acidic cleaning solution, the proportion of acidic cleaning solution formula nitric acid and water is 15%: 85% to 30%: 70% (mass percent), or acidic cleaning solution utilizes the acid pickle in power station;
(2) vacant lot is put into acidic cleaning solution or the acid pickle that step (1) prepares, soak time 60-120 minute to the polypropylene or the polyvinyl chloride packing that remove outside cooling tower inner platform or tower;
(3) take out in step (2) through acidic cleaning solution or the soaked polypropylene of acid pickle or polyvinyl chloride packing, during water carries out back and forth, pressure water jet cleans, spray hydraulic pressure 0.5-0.8MPa, reciprocal time 5-10 time, and with the pH test paper, the water that drips around filler is tested, until be shown as neutrality;
(4) filler that has cleaned with the contourgraph inspection, contourgraph multiplication factor used are 15-20 times, and the molecule number on monolithic polypropylene or polyvinyl chloride packing unit are is not more than 100/m
2, reach cleaning performance;
The filler that (5) will reach the cleaning standard is reinstalled and is resetted.
The below is several specific embodiment of the present invention:
Embodiment 1
4 polyvinyl chloride packings under the reverse-flow mechanical-draft cooling tower dismounting in certain power station are cleaned, and filler is assembly, size 1000mm (length) * 500mm (wide) * 1000mm (height).
(1) preparation 1m
3Acidic cleaning solution, the mass percent of nitric acid and water is 20%: 80%, putting into volume is 2m
3Plastics #1 container in, and get this power station acid pickle 1m
3Putting into another volume is 2m
3Plastics #2 container in, cleaning temperature is 20 ℃ of normal temperature;
(2) 4 blocks of fillers are put into respectively the #2 container that the #1 container for preparing acidic cleaning solution is housed and the power station acid pickle is housed at twice, soak time is 60min;
(3) take out the middle pressure water jet cleaning that soaked filler back and forth carries out respectively 5 hydraulic pressure 0.6MPa, with the pH test paper, the water that drips around filler is tested, the pH value is all between 6.5-7.5;
(4) respectively 4 blocks of fillers are checked with contourgraph, the molecule that wherein adheres to is counted and is respectively 72/m on unit are
2, 56/m
2And 82/m
2, 75/m
2, all meet the requirements.
Embodiment 2
4 polyvinyl chloride packings under the reverse-flow mechanical-draft cooling tower dismounting in certain power station are cleaned, and filler is assembly, size 1000mm (length) * 500mm (wide) * 1000mm (height).
(1) preparation 1m
3Acidic cleaning solution, the mass percent of nitric acid and water is 30%: 70%, putting into volume is 2m
3Plastics #1 container in, and get this power station acid pickle 1m
3Putting into another volume is 2m
3Plastics #2 container in, cleaning temperature is 20 ℃ of normal temperature;
(2) 4 blocks of fillers are put into respectively the #2 container that the #1 container for preparing acidic cleaning solution is housed and the power station acid pickle is housed at twice, soak time is 80min;
(3) take out the middle pressure water jet cleaning that soaked filler back and forth carries out respectively 8 hydraulic pressure 0.6MPa, with the pH test paper, the water that drips around filler is tested, the pH value is all between 6.5-7.5;
(4) respectively 4 blocks of fillers are checked with contourgraph, the molecule that wherein adheres to is counted and is respectively 60/m on unit are
2, 59/m
2And 55/m
2, 67/m
2, all meet the requirements.
Off-line Physical Chemical Cleaning method for the Cooling Tower of Power Station packing provided by the invention compared with prior art has the following advantages:
(1) cleaning method is simple, cleaning step is clear, can realize that the cleaning refitting of filler resets in batches;
(2) cleanliness factor is high, capable of washingly falls dirt and the foundry loam that is difficult to remove in cooling tower polypropylene or polyvinyl chloride packing, guarantees cooling effect normal, need of production;
(3) the cleaning fluid raw material is simple, and consumption is few, and cost is low, economic environmental protection, and power station acid pickle secondary utilizes, and saves maintenance cost, has larger potential benefit;
(4) cleaning method has good protection effect to filler, can extend the service life of filler, and can not produce corrosion to cooling tower body, liquid distribution distribution channel (pipe), collecting-tank etc.;
(5) method of inspection is simple and practical, can effectively guarantee the cleanliness factor requirement of cooling tower filler.
Adopt the present invention that the Cooling Tower of Power Station packing is cleaned except a small amount of nitric acid of needs, almost without any need for raw material, perhaps directly use the acid pickle in power station, cost of material is extremely low, when cleaning, middle pressure water jet only need spend a small amount of electricity charge in addition, therefore the cost that cleans operation is very low, is one and is used for the economy that Cooling Tower of Power Station polypropylene or polyvinyl chloride packing clean, effective, practical technology.
Above demonstration and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. off-line Physical Chemical Cleaning method that is used for the Cooling Tower of Power Station packing is characterized in that: said method comprising the steps of:
(1) prepare at normal temperatures a certain amount of acidic cleaning solution, the proportion of acidic cleaning solution formula nitric acid and water is 15%: 85% to 30%: 70% (mass percent), or acidic cleaning solution utilizes the acid pickle in power station;
(2) vacant lot is put into acidic cleaning solution or the acid pickle that step (1) prepares, soak time 60-120 minute to the polypropylene or the polyvinyl chloride packing that remove outside cooling tower inner platform or tower;
(3) take out in step (2) through acidic cleaning solution or the soaked polypropylene of acid pickle or polyvinyl chloride packing, during water carries out back and forth, pressure water jet cleans, spray hydraulic pressure 0.5-0.8MPa, reciprocal time 5-10 time, and with the pH test paper, the water that drips around filler is tested, until be shown as neutrality;
(4) filler that has cleaned with the contourgraph inspection, contourgraph multiplication factor used are 15-20 times, and the molecule number on monolithic polypropylene or polyvinyl chloride packing unit are is not more than 100/m
2, reach cleaning performance;
The filler that (5) will reach the cleaning standard is reinstalled and is resetted.
2. the off-line Physical Chemical Cleaning method for the Cooling Tower of Power Station packing according to claim 1, it is characterized in that: described step (1) acidic cleaning solution formula is that the proportion of nitric acid and water is 20%: 80% to 25%: 75% (mass percent).
3. the off-line Physical Chemical Cleaning method for the Cooling Tower of Power Station packing according to claim 1 is characterized in that: described step (2) is 90 minutes with the acidic cleaning solution or the acid pickle soak time that prepare.
4. the off-line Physical Chemical Cleaning method for the Cooling Tower of Power Station packing according to claim 1, it is characterized in that: described step (3) through packing that acidic cleaning solution or acid pickle soaked again with in pressure water jet to carry out reciprocal wash number be 8 times, spray hydraulic pressure 0.6MPa.
5. the off-line Physical Chemical Cleaning method for the Cooling Tower of Power Station packing according to claim 1 is characterized in that: the molecule number on the monolithic filler unit are after described step (4) is cleaned with the contourgraph inspection is less than 90/m
2, the contourgraph multiplication factor is 18 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100316058A CN103175440A (en) | 2012-02-13 | 2012-02-13 | Off-line physical chemistry cleaning method used for splash packing of power station cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100316058A CN103175440A (en) | 2012-02-13 | 2012-02-13 | Off-line physical chemistry cleaning method used for splash packing of power station cooling tower |
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|---|---|
| CN103175440A true CN103175440A (en) | 2013-06-26 |
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| CN2012100316058A Pending CN103175440A (en) | 2012-02-13 | 2012-02-13 | Off-line physical chemistry cleaning method used for splash packing of power station cooling tower |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105695161A (en) * | 2016-03-16 | 2016-06-22 | 安徽海德石油化工有限公司 | Filling material cleaning agent for waste gas absorption tower of oil refinery |
| CN107213664A (en) * | 2016-03-22 | 2017-09-29 | 上海其福青材料科技有限公司 | A kind of processing method of rectifying tower packing |
| CN110411272A (en) * | 2019-08-29 | 2019-11-05 | 高晋柏 | There are the Thermal Power Station's cooling stack and cleaning method of lasting cleaning function |
| CN112984661A (en) * | 2021-03-30 | 2021-06-18 | 中国石油集团东北炼化工程有限公司沈阳分公司 | Air cooler capable of resisting severe summer heat and severe cold weather |
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| JP2001066093A (en) * | 1999-08-26 | 2001-03-16 | San Kogyo Kk | Cleaner |
| JP2006343040A (en) * | 2005-06-09 | 2006-12-21 | Mitsubishi Electric Building Techno Service Co Ltd | Indoor unit for air conditioner, its sterilization cleaning method, and resin sterilization pack used in the method |
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| JP2010163488A (en) * | 2009-01-13 | 2010-07-29 | Kurita Water Ind Ltd | Cleaning agent for circulative cooling water system and cleaning method in steel making process |
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Patent Citations (6)
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| JP2001066093A (en) * | 1999-08-26 | 2001-03-16 | San Kogyo Kk | Cleaner |
| JP2006343040A (en) * | 2005-06-09 | 2006-12-21 | Mitsubishi Electric Building Techno Service Co Ltd | Indoor unit for air conditioner, its sterilization cleaning method, and resin sterilization pack used in the method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105695161A (en) * | 2016-03-16 | 2016-06-22 | 安徽海德石油化工有限公司 | Filling material cleaning agent for waste gas absorption tower of oil refinery |
| CN107213664A (en) * | 2016-03-22 | 2017-09-29 | 上海其福青材料科技有限公司 | A kind of processing method of rectifying tower packing |
| CN107213664B (en) * | 2016-03-22 | 2019-11-29 | 上海其福青材料科技有限公司 | A kind of processing method of rectifying tower packing |
| CN110411272A (en) * | 2019-08-29 | 2019-11-05 | 高晋柏 | There are the Thermal Power Station's cooling stack and cleaning method of lasting cleaning function |
| CN110411272B (en) * | 2019-08-29 | 2024-06-04 | 高晋柏 | Natural ventilation cooling tower with continuous cleaning function for thermal power plant and cleaning method |
| CN112984661A (en) * | 2021-03-30 | 2021-06-18 | 中国石油集团东北炼化工程有限公司沈阳分公司 | Air cooler capable of resisting severe summer heat and severe cold weather |
| CN112984661B (en) * | 2021-03-30 | 2022-12-30 | 中国石油集团东北炼化工程有限公司沈阳分公司 | Air cooler capable of resisting severe summer heat and severe cold weather |
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Application publication date: 20130626 |