CN1240769A - Compound treating agent for water treatment - Google Patents
Compound treating agent for water treatment Download PDFInfo
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- CN1240769A CN1240769A CN 98113264 CN98113264A CN1240769A CN 1240769 A CN1240769 A CN 1240769A CN 98113264 CN98113264 CN 98113264 CN 98113264 A CN98113264 A CN 98113264A CN 1240769 A CN1240769 A CN 1240769A
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- cooling water
- composite water
- water disposal
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Abstract
A compound water-treating agent is prepared from corrosion inhibitor (polyol phosphate), scaling inhibitor (acrylic acid-acrylate-maleic aldehyde copolymer, or acrylic acid-hydroxypropyl acrylate copolymer, or sodium lignosulfonate), and sterilizing algicide (tetradecyl dimethylbenzyl ammonium chloride or chlordine). Said compound water-treating agent is suitable for the circulating cooling water of heat exchanger, whose main component is polyphosphate, to eliminate the rust and point corrosion on the pipe wall of heat exchanger made of carbon steel and to save electric energy and water.
Description
The present invention is a kind of compound treating agent for water treatment, and it belongs to the dedicated water treatment agent that prevents recirculated cooling water simple steel heat exchanger tube wall generation rust knurl and spot corrosion.It comprises inhibiter, Scale inhibitors, Biocidal algae-killing agent.
Be that main prescription is used for industrial circulating cooling water and handles quite generally at present with the poly-phosphate, heat exchange equipment heavy corrosion, latch up phenomenon greatly reduce.But [seeing Treatment of Industrial Water 1996 (3) 32] but comparatively given prominence in rust knurl of the recirculated cooling water simple steel heat exchanger tube wall under this prescription and spot corrosion.
The objective of the invention is to avoid weak point of the prior art and provide a kind of and be intended to solve poly-phosphate and be the rust knurl and the spot corrosion that produce of industrial circulating cooling water simple steel heat exchanger tube wall down of main prescription.
Purpose of the present invention can reach by following measure: constitute by inhibiter, Scale inhibitors, Biocidal algae-killing agent, by proportioning (%) by
PAPE 35～42
Inorganic phosphate 9～15
Vinylformic acid-acrylate-maleic anhydride copolymer or
Vinylformic acid-Propylene glycol monoacrylate copolymer 1 6～36
Xylogen semi-annular jade pendant acid sodium 15～35
Tetradecyl benzyl dimethyl ammonium chloride or chlorine ingot are an amount of
Zinc salt is formed in right amount.
Purpose of the present invention can also reach by following measure, at recirculating cooling water system:
Do to clean, the prefilming agent time spent, composite water disposal agent concentration regulate and control at 150～450mg/L, pH value is regulated and control 4.5～6.0, move back blowdown limit moisturizing in 48 hours to turbidity＜10mg/L only.
Do to strengthen the prefilming agent time spent, composite water disposal agent concentration regulate and control at 200～550mg/L, and pH value is regulated and control 5.2～6.8, move back blowdown limit moisturizing in 48 hours to turbidity＜10mg/L only.
Do the normal operation medicament time spent, composite water disposal agent concentration is regulated and control at 10～50mg/L, and pH value is regulated and control 6.8～8.6.
Accompanying drawing of the present invention is the equipment synoptic diagram, is described as follows: (1) is the feed(raw material)inlet, and (2) are reactor 1500～2000L, and (3) are agitator speed 60～90 commentaries on classics/min, and (4) are the complex liquid outlets.
The present invention is described in further detail below in conjunction with accompanying drawing, embodiment.
The structural formula of the PAPE in the present invention's prescription is
It is to serve as the main a kind of mixed type organic inhibition dirty-proof agent of inorganic phosphate in a small amount that has concurrently to contain organophosphates such as phosphate monoester, phosphate diester, it is good to have corrosion mitigating effect, to the biological slime mud, ferric oxide dirt, zinc salt mantoquita etc. has and disperses and be stabilized in ability in the water, and it contains organic phosphoric acid ester (PO
4 3-Meter) 32 ± 1%, inorganic phosphate (PO
4 3-Meter) 10 ± 1%, its quality index is 42 ± 1%.Vinylformic acid-acrylate-maleic anhydride copolymer or vinylformic acid-Propylene glycol monoacrylate multipolymer is good dirt dispersion agent, and resistance calcium phosphate scale, ferric oxide dirt, zinc salt are deposited special efficacy, and its quality index is 30 ± 1%.Xylogen semi-annular jade pendant acid sodium is a kind of water miscible multifunctional macromolecule ionogen, has the ability of disperseing biological slime mud, ferric oxide dirt, calcium phosphate scale, can form stable complex compound with zine ion, calcium ion etc. again, and its quality index is 42 ± 2%.Tetradecyl benzyl dimethyl ammonium chloride is a kind of Biocidal algae-killing agent of high-efficiency low-toxicity wide spectrum, also the biological slime mud is had the dispersing and antisludging effect simultaneously.The chlorine ingot is a kind of solid Biocidal algae-killing agent, and chance moisture solved hypochlorous acid and calcium hydroxide after the chlorine ingot added circulating water system, and hypochlorous acid is the major ingredient of sterilization algae removal.The corrosion mitigating effect of zinc salt use under slant acidity water quality can the raising significantly poly-phosphate can moderately reduce the consumption of poly-phosphate and reduce working cost, and its quality index is 95 ± 3%.
Preparation method of the present invention: will meet the PAPE in the prescription that the technical pure quality index requires at normal temperatures and pressures, inorganic phosphate, vinylformic acid-acrylate-maleic anhydride copolymer or vinylformic acid-Propylene glycol monoacrylate multipolymer, xylogen semi-annular jade pendant acid sodium is transported in the reactor (2) by inlet (1) respectively according to a certain ratio, start agitator (3), stir while feeding intake, feed intake to supply after finishing and need the soft water or the tap water that drop into by calculating, continue to stir 20～30min, stirring stops the back and opens complex liquid outlet (4), packs into the complex liquid that makes in the finished product jar and is sealed.While actually employed joins stirring a little in the complex liquid that has prepared to an amount of commercially pure Biocidal algae-killing agent tetradecyl benzyl dimethyl ammonium chloride or chlorine ingot with an amount of zinc salt, gets the present invention's composite water disposal agent.
The calculating of charging capacity of the present invention: suppose to press surface compositions:
PAPE (being called for short A) 38.4%
Inorganic phosphate (being called for short B) 12%
Vinylformic acid-acrylate-maleic anhydride copolymer (being called for short C) 36%
Xylogen semi-annular jade pendant acid sodium (being called for short D) 13.6%
Prepare 1 ton of (about 1000L) complex liquid, and suppose that each raw material design effective content is 30%,
, therefore,
Total charging capacity=A+B+C+D=0.274+0.086+0.36+0.097=0.817 (T)
Rate of water make-up=1-0.817=0.183 (T)
Using method of the present invention: firm deployed composite water disposal agent of the present invention is regulated to predetermined concentration, drops into immediately in the recirculating cooling water system, according to different service condition regulation and control pH value and turbidity.
For preventing the generation of heat exchanger tube rust knurl and spot corrosion, generally speaking pipeline needs to do to clean pre-film in composite water disposal agent, strengthens pre-film, normally moves three programs of medicament.
Example one, do to clean at recirculating cooling water system, prefilming agent uses.
By above-mentioned using method, just deployed composite water disposal agent concentration is regulated to 150～450mg/L, put into recirculating cooling water system, pH value regulate and control 4.5～6.0, move back blowdown limit moisturizing in 48 hours to turbidity＜10mg/L only.Clean up through check, pre-film reaches more than 95%.
Example two, do to strengthen prefilming agent at recirculating cooling water system and use.
Just deployed composite water disposal agent concentration is regulated to 200～550mg/L, and pH value regulate and control 5.2～6.8, move back blowdown limit moisturizing in 48 hours to turbidity＜10mg/L only.Through checking pre-film to thicken at least more than one times.
Example three, make normal operation medicament at recirculating cooling water system and use.
Firm deployed composite water disposal agent concentration is regulated to 10～50mg/L, and pH value is regulated and control 6.8～8.6, and operation is after check produces rust knurl and spot corrosion.
The present invention has following advantage compared to existing technology:
1, solved and occurred the phosphate that is difficult to solve behind the present use Quadrafos prescription Dirt deposition, biological slime mud deposition, iron oxide dirt deposition and deposition of zinc salt problem have been eliminated The precondition that rust knurl and spot corrosion are produced, protected simple steel heat exchanger avoid pitting corrosion and Spot corrosion harm, thereby the service life 30～50% of prolongation cold exchange device.
2, improved the heat transfer efficiency of cold exchange device, reduced the load of power-equipment, joint The electricity rate reduces by 30% than Quadrafos prescription, and water-saving rate reduces by 90% than direct current water.
3, be applicable to the circulating cooling water treatment of the heat transmission equipment of any material, also be suitable for Operation in central air-conditioning cooling, chilled water is processed.
Claims (4)
1, a kind of compound treating agent for water treatment is used to prevent that recirculated cooling water simple steel heat exchanger tube wall from producing rust knurl and spot corrosion, is made of inhibiter, Scale inhibitors, Biocidal algae-killing agent, it is characterized in that by proportioning (%) by
PAPE 35～42
Inorganic phosphate 9～15
Vinylformic acid-acrylate-maleic anhydride copolymer or
Vinylformic acid-Propylene glycol monoacrylate copolymer 1 6～36
Xylogen semi-annular jade pendant acid sodium 15～35
Tetradecyl benzyl dimethyl ammonium chloride or chlorine ingot are an amount of
Zinc salt is formed in right amount.
2, composite water disposal agent according to claim 1, it is characterized in that: do to clean the prefilming agent time spent at recirculating cooling water system, composite water disposal agent concentration regulation and control are at 150～450mg/L, and pH value regulate and control 4.5～6.0, move back blowdown limit moisturizing in 48 hours to turbidity＜10mg/L only.
3, composite water disposal agent according to claim 1, it is characterized in that: do to strengthen the prefilming agent time spent at recirculating cooling water system, composite water disposal agent concentration regulation and control are at 200～550mg/L, and pH value regulate and control 5.2～6.8, move back blowdown limit moisturizing in 48 hours to turbidity＜10mg/L only.
4, composite water disposal agent according to claim 1 is characterized in that: do the normal operation medicament time spent at recirculating cooling water system, composite water disposal agent concentration is regulated and control at 10～50mg/L, and pH value is regulated and control 6.8～8.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113264 CN1106355C (en) | 1998-06-26 | 1998-06-26 | Compound treating agent for water treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113264 CN1106355C (en) | 1998-06-26 | 1998-06-26 | Compound treating agent for water treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1240769A true CN1240769A (en) | 2000-01-12 |
| CN1106355C CN1106355C (en) | 2003-04-23 |
Family
ID=5223013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98113264 Expired - Fee Related CN1106355C (en) | 1998-06-26 | 1998-06-26 | Compound treating agent for water treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1106355C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7090780B2 (en) | 2001-04-05 | 2006-08-15 | Toray Industries, Inc. | Bactericide for use in water treatment, method for water treatment and apparatus for water treatment |
| CN100343178C (en) * | 2001-04-05 | 2007-10-17 | 东丽株式会社 | Water treatment method |
| CN102259988A (en) * | 2011-05-24 | 2011-11-30 | 天津市科达斯实业有限公司 | Multifunctional water treatment agent for oilfield reinjection water |
| CN103332794A (en) * | 2013-06-08 | 2013-10-02 | 中国石油天然气股份有限公司 | Composite water treatment agent for thickened oil thermal recovery boiler and preparation method thereof |
| CN104860405A (en) * | 2015-04-08 | 2015-08-26 | 常熟市水处理助剂厂有限公司 | High-efficiency corrosion and scale inhibitor and preparation method thereof |
| CN106673214A (en) * | 2015-11-10 | 2017-05-17 | 宜兴全泽化工有限公司 | Efficient green low-phosphorus scale and corrosion inhibitor |
| CN111441058A (en) * | 2020-05-19 | 2020-07-24 | 北京可林维尔化工有限公司 | Descaling rust-removing corrosion-inhibition prefilming agent and preparation method and application thereof |
-
1998
- 1998-06-26 CN CN 98113264 patent/CN1106355C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7090780B2 (en) | 2001-04-05 | 2006-08-15 | Toray Industries, Inc. | Bactericide for use in water treatment, method for water treatment and apparatus for water treatment |
| CN100343178C (en) * | 2001-04-05 | 2007-10-17 | 东丽株式会社 | Water treatment method |
| CN102259988A (en) * | 2011-05-24 | 2011-11-30 | 天津市科达斯实业有限公司 | Multifunctional water treatment agent for oilfield reinjection water |
| CN102259988B (en) * | 2011-05-24 | 2012-10-03 | 天津市科达斯实业有限公司 | Multifunctional water treatment agent for oilfield reinjection water |
| CN103332794A (en) * | 2013-06-08 | 2013-10-02 | 中国石油天然气股份有限公司 | Composite water treatment agent for thickened oil thermal recovery boiler and preparation method thereof |
| CN104860405A (en) * | 2015-04-08 | 2015-08-26 | 常熟市水处理助剂厂有限公司 | High-efficiency corrosion and scale inhibitor and preparation method thereof |
| CN106673214A (en) * | 2015-11-10 | 2017-05-17 | 宜兴全泽化工有限公司 | Efficient green low-phosphorus scale and corrosion inhibitor |
| CN111441058A (en) * | 2020-05-19 | 2020-07-24 | 北京可林维尔化工有限公司 | Descaling rust-removing corrosion-inhibition prefilming agent and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1106355C (en) | 2003-04-23 |
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