CN1204064C - Composite scale resistant corrosion inhibitor - Google Patents
Composite scale resistant corrosion inhibitor Download PDFInfo
- Publication number
- CN1204064C CN1204064C CN 01133709 CN01133709A CN1204064C CN 1204064 C CN1204064 C CN 1204064C CN 01133709 CN01133709 CN 01133709 CN 01133709 A CN01133709 A CN 01133709A CN 1204064 C CN1204064 C CN 1204064C
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- Prior art keywords
- acid
- corrosion inhibitor
- composite scale
- cooling water
- inhibiting corrosion
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Abstract
The present invention relates to a compounded type high-efficient antiscaling corrosion inhibiting agent. The present invention is prepared by compounding a group of organic and inorganic corrosion inhibiting antiscaling agents with an antiscaling dispersion agent and an auxiliary agent, and has the characteristics of strong coordination action, good compatibility with bactericides, convenient use and operation and favorable combination property. Under the conditions of high condensation multiplying factor and high pH value, the present invention has strong inhibiting action for the corrosion of materials of carbon steel, stainless steel, copper, etc. as well as for the deposition of inorganic scales of calcium carbonate, calcium phosphate, etc.
Description
One, technical field
The present invention relates to the recirculated cooling water anti-incrustation corrosion inhibitor, especially the recirculating cooling water system anti-incrustation corrosion inhibitor of high concentration multiple, high rigidity, high pH value.
Two, background technology
Water is the blood of industry.In process water, the consumption of water coolant accounts for 80%, and wherein 50% is recirculated cooling water.Recycling of water coolant reached the purpose of economizing on water, but also brought problems such as heat-exchange equipment fouling, corrosion simultaneously.GB GB50050-95 " Code for design of industrial recirculating cooling water treatment " has strict requirement to circulating cooling water quality: corrosion of carbon steel rate＜0.125mm/a, and stainless steel, red copper, brass corrosion rate＜0.005mm/a, the fouling resistance value is suitable＜and 1.72 * 10
-4～3.44 * 10
-4m
2K/W, the recirculating cooling water system cycles of concentration is suitable＞and 3.0.
The anti-incrustation corrosion inhibitor kind that is used for industrial circulating cooling water system at present is more, but uses single anti-incrustation corrosion inhibitor, exists cycles of concentration not high, and the pH value is lower than problems such as 8.5.Existing composite scale inhibiter also exists and can not move under the cycles of concentration that is higher than more than 4 times better, makes the recirculating cooling water system blowdown flow rate big, and reagent consumption and make up water are bigger than normal.As the described anti-incrustation corrosion inhibitor applicable pH of CN98113264 value scope is 5.2～6.8; The cycles of concentration of the anti-incrustation corrosion inhibitor described in " Treatment of Industrial Water " 2000,20 (9) .-42-44 articles is controlled at 2.5～3.0 times etc.
Three, summary of the invention
The present invention utilizes the water conditioner monomer, by the different separately mechanism of action, utilizes rational compounded technology, gives full play to the synergy between each monomer, designs compound prescription type anti-incrustation corrosion inhibitor.Selective water quality stabilizer monomer have: polyvalent alcohol phosphonic acid ester (PAPE), phosphine carboxylic acid (PBTCA), 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP), Amino Trimethylene Phosphonic Acid (ATMP), 2-hydroxyl phosphino-acetate (HPA), polyacrylic acid (PAA), vinylformic acid-methyl acrylate copolymer, vinylformic acid-Propylene glycol monoacrylate multipolymer, vinylformic acid-Propylene glycol monoacrylate terpolymer, vinylformic acid-sulfonic acid based terpolymers, vinylformic acid-Propylene glycol monoacrylate-sulfonic acid terpolymer, vinylformic acid-acrylate-phosphoric acid-sulfonic acid tetrapolymer, benzotriazole, Methylbenzotriazole, tripoly phosphate sodium STPP, Sodium hexametaphosphate 99, zinc sulfate, zinc chloride etc.; Auxiliary: water, sulfuric acid, hydrochloric acid, dimethyl formamide etc.
Vinylformic acid-acrylate of selecting for use among the present invention-phosphoric acid-sulfonic acid tetrapolymer is the multipolymer that contains groups such as carboxyl, hydroxyl, phosphono, sulfonic group.With water conditioner commonly used relatively, his coordination is good, prevents that lime carbonate, calcium phosphate deposition effect are good, is fit in extensive range.As dirt dispersion agent, the general and compound use of organic phosphonate.
Utilization organic inhibitor benzotriazole among the present invention, Methylbenzotriazole solves the etching problem of copper material.But because of benzotriazole, Methylbenzotriazole is under low pH value, water insoluble and other anti-incrustation corrosion inhibitors, utilization organic solvent dimethyl formamide, make benzotriazole, Methylbenzotriazole is dissolved in phosphine carboxylic acid, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, vinylformic acid-acrylate-phosphoric acid-sulfonic acid tetrapolymer mutually.
Be used for high concentration multiple, high rigidity, high pH value (7.8～9.2), the anti-incrustation corrosion inhibitor of the recirculating cooling water system of carbon steel, stainless steel, its mass percent is composed as follows:
30%～40% phosphine carboxylic acid
5%～15% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
20%～25% vinylformic acid-acrylate-phosphoric acid-sulfonic acid tetrapolymer
5%～10% zinc salt
15%～30% water, hydrochloric acid.
Be used for high concentration multiple, high rigidity is not regulated the pH value, the anti-incrustation corrosion inhibitor that moves under the recirculating cooling water system condition of carbon steel, stainless steel, copper material, and its mass percent is composed as follows:
10%～20% phosphine carboxylic acid
5%～15% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
40%～60% vinylformic acid-acrylate-phosphoric acid-sulfonic acid tetrapolymer
5%～10% zinc salt
1%～5% benzotriazole, Methylbenzotriazole
2%～8% dimethyl formamide
5%～22% water, hydrochloric acid.
When composite scale-inhibiting corrosion inhibitor of the present invention was used for recirculating cooling water system and cleans pre-film, concentration was controlled at 160～350mg/l.
When composite scale-inhibiting corrosion inhibitor of the present invention was used for recirculating cooling water system and normally moves, concentration was controlled at 15～60mg/l.
Composite scale-inhibiting corrosion inhibitor of the present invention is adapted at using under high rigidity, pH value scope 7.8～9.2 conditions, equipment to carbon steel, stainless steel, copper material has good corrosion mitigating effect, cycles of concentration is the highest can be up to 5.5～6.0 times, good with existing sterilant compatibility.The operation of long-term stability under high concentration multiple condition steady in a long-term, both water saving, the conserve water treatment agent has overcome under low cycles of concentration the corrosion-prone problem of recirculating cooling water system equipment simultaneously again again.
Four, embodiment
Embodiment 1:
22kg water, 3kg hydrochloric acid, 5kg zinc chloride, 30kg phosphine carboxylic acid, 15kg 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 25kg vinylformic acid-acrylate-phosphoric acid-sulfonic acid tetrapolymer stir in reactor and make composite scale-inhibiting corrosion inhibitor.Add this composite scale-inhibiting corrosion inhibitor in recirculated cooling water, composite scale-inhibiting corrosion inhibitor concentration is 50mg/l in the maintenance recirculated water.Its result is:
| The mensuration project | The Corrosion of Stainless Steel rate | The corrosion of carbon steel rate | Fouling resistance | Cycles of concentration |
| Unit | mm/a | mm/a | m 2·K/W | With K +Meter |
| GB50050-95 | ＜0.005 | ＜0.125 | ＜1.722×10 -4～ 3.44×10 -4 | ＞3.0 |
| Embodiment 1 | 0.00003 | 0.004939 | 4.43×10 -5 | 5.313 |
The four indices that the example utilization obtains all is better than the regulation of GB50050-95.
Embodiment 2:
1kg benzotriazole, 0.5kg Methylbenzotriazole, 10kg water, 20kg phosphine carboxylic acid, 5kg 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 50kg vinylformic acid-acrylate-phosphoric acid-sulfonic acid tetrapolymer, 4kg hydrochloric acid, 9.5kg zinc chloride stir in reactor and make composite scale-inhibiting corrosion inhibitor.Add this composite scale-inhibiting corrosion inhibitor in recirculated cooling water, composite scale-inhibiting corrosion inhibitor concentration is 50mg/l in the maintenance recirculated water.Its result is:
| The mensuration project | Corrosion rate (mm/a) | Fouling resistance (m 2·K/W) | Cycles of concentration is (with K +Meter) | |||
| Carbon steel | Stainless steel | Red copper | Brass | |||
| GB50050 -95 | ＜0.125 | ＜0.005 | ＜0.005 | ＜0.005 | ＜1.722× 10 -4～ 3.44× 10 -4 | ＞3.0 |
| Embodiment 2 | 0.01238 | 0.0001057 | 0.0008402 | 0.00009508 | 1.138× 10 -4 | 5.54 |
Six indexs that the example utilization obtains all are better than the regulation of GB50050-95.
Claims (6)
1 one kinds of composite scale-inhibiting corrosion inhibitors, contain phosphine carboxylic acid, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, multipolymer, zinc salt, water, be used for recirculating cooling water system, prevent carbon steel, stainless steel, the copper equipment corrosion of recirculated cooling water fouling and recirculating cooling water system, it is characterized in that described multipolymer is vinylformic acid-acrylate-phosphoric acid-sulfonic acid class tetrapolymer.
2 according to the described composite scale-inhibiting corrosion inhibitor of claim 1, it is characterized in that composed of the following components by mass percentage:
30%～40% phosphine carboxylic acid
5%～15% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
20%～25% vinylformic acid-acrylate-phosphoric acid-sulfonic acid tetrapolymer
5%～10% zinc salt
15%～30% water, hydrochloric acid.
3 according to the described composite scale-inhibiting corrosion inhibitor of claim 1, it is characterized in that composed of the following components by mass percentage:
10%～20% phosphine carboxylic acid
5%～15% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
40%～60% vinylformic acid-acrylate-phosphoric acid-sulfonic acid tetrapolymer
5%～10% zinc salt
1%～5% benzotriazole, Methylbenzotriazole
2%～8% dimethyl formamide
5%～22% water, hydrochloric acid.
4 according to the described composite scale-inhibiting corrosion inhibitor of claim 2, is applicable to pH value 7.8～9.2 scopes, the recirculating cooling water system of carbon steel and stainless steel.
5 according to claim 2 or the described composite scale-inhibiting corrosion inhibitor of claim 3, and it is characterized in that: when recirculating cooling water system cleaned pre-film, composite scale-inhibiting corrosion inhibitor concentration was controlled at 160～350mg/l.
6 according to claim 2 or the described composite scale-inhibiting corrosion inhibitor of claim 3, and it is characterized in that: when recirculating cooling water system normally moved, composite scale-inhibiting corrosion inhibitor concentration was controlled at 15～60mg/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01133709 CN1204064C (en) | 2001-12-20 | 2001-12-20 | Composite scale resistant corrosion inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01133709 CN1204064C (en) | 2001-12-20 | 2001-12-20 | Composite scale resistant corrosion inhibitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1425618A CN1425618A (en) | 2003-06-25 |
| CN1204064C true CN1204064C (en) | 2005-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01133709 Expired - Fee Related CN1204064C (en) | 2001-12-20 | 2001-12-20 | Composite scale resistant corrosion inhibitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100431985C (en) * | 2005-08-31 | 2008-11-12 | 刘天暘 | Scale inhibitor for wet method phosphoric acid manufacture |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005116296A1 (en) * | 2004-05-25 | 2005-12-08 | Kurita Water Industries Ltd. | Method of cooling water treatment and treatment chemical |
| CN100393640C (en) * | 2004-12-30 | 2008-06-11 | 中国石化北京燕化石油化工股份有限公司 | Method for treating circulating cooling water |
| CN101289256B (en) * | 2008-05-30 | 2010-06-02 | 南京林业大学 | Four-element polymerization type corrosion inhibition antisludging agent and method for preparing same |
| CN101700937B (en) * | 2009-11-14 | 2013-01-30 | 深圳市南峰水处理服务有限公司 | Composite scale inhibitor |
| CN101698542B (en) * | 2009-11-17 | 2012-01-04 | 上海依科绿色工程有限公司 | Composite corrosion and scale inhibitor for open type cooling water system made of galvanized pipe, preparation method and application thereof |
| CN103449619A (en) * | 2013-09-22 | 2013-12-18 | 四川泸天化股份有限公司 | Novel environment-friendly compound corrosion and scale inhibitor |
| CN104258735B (en) * | 2014-10-16 | 2016-09-07 | 山东天庆科技发展有限公司 | A kind of reverse osmosis membrane antisludging agent and preparation method thereof |
| CN104550139A (en) * | 2014-12-02 | 2015-04-29 | 安徽新中远化工科技有限公司 | Phosphoric acid production equipment and pipeline cleaning scale removal method |
| CN104803494B (en) * | 2015-05-12 | 2016-08-24 | 四川阳森石油技术有限公司 | A kind of corrosion inhibiting and descaling agent for recirculated cooling water |
| CN106011818B (en) * | 2016-04-22 | 2018-10-26 | 诸暨马谷亲科技有限公司 | A kind of prefilming agent for recirculating cooling water system pre-filming treatment |
| CN106148933A (en) * | 2016-07-25 | 2016-11-23 | 仙桃市信达化工有限责任公司 | A kind of for industrial circulating cooling water system pipeline and the low-phosphorous prefilming agent of heat exchanger |
| CN107902771A (en) * | 2017-10-24 | 2018-04-13 | 陈木玲 | A kind of reverse osmosis dirt dispersion agent and its preparation process |
| CN109761378A (en) * | 2019-02-22 | 2019-05-17 | 郭福然 | A kind of high concentration ratio recirculated water special corrosion and scale inhibitor and preparation method thereof |
-
2001
- 2001-12-20 CN CN 01133709 patent/CN1204064C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100431985C (en) * | 2005-08-31 | 2008-11-12 | 刘天暘 | Scale inhibitor for wet method phosphoric acid manufacture |
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| CN1425618A (en) | 2003-06-25 |
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