CN101607765A - Inhibiter - Google Patents
Inhibiter Download PDFInfo
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- CN101607765A CN101607765A CNA2008100391601A CN200810039160A CN101607765A CN 101607765 A CN101607765 A CN 101607765A CN A2008100391601 A CNA2008100391601 A CN A2008100391601A CN 200810039160 A CN200810039160 A CN 200810039160A CN 101607765 A CN101607765 A CN 101607765A
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- inhibiter
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- borate
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- sodium nitrite
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Abstract
Inhibiter of the present invention is made up of Sodium Nitrite, borate, organic phospho acid compounds, organic amine, aromatic series azole compounds, vinylformic acid sulfonic acid terpolymer, solid base and water, the present invention is composite by Sodium Nitrite and other materials, by the synergy between component, improve corrosion mitigating effect, with the nitrite dosage (with NO
2 -Meter) be reduced to 50～60mg/L from 400～500mg/L, reduce the consumption of poisonous Sodium Nitrite significantly with this, reduce the influence to environment, and reduce processing costs, the present invention is owing to good synergistic, and corrosion inhibition is more excellent.
Description
Technical field:
The present invention relates to chemical field, relate in particular to water technology, particularly be used for the cooling water treatment agent of closed system, a kind of specifically inhibiter.
Background technology:
It is not only effective to adopt chemical inhibiter method to suppress the corrosion of iron and steel in water, and comparatively easy.The inhibiter that uses in steelworks blast furnace, the airtight cooling water system of electric furnace has nitrite system and molybdate series at present, and this inhibiter of two types respectively has relative merits.Though molybdate series inhibiter corrosion inhibition rate height, low toxicity is nuisanceless, and it is big to add dosage, costs an arm and a leg, and the cost height causes applying difficulty.Use wider conventional nitrite corrosion inhibitor and have the corrosion inhibition rate height, advantages such as low price, but it is big to add dosage equally, and general requirement 400～500mg/L is (with NO
2 -Meter), since its nitrite content height, contaminate environment, discharging is restricted, and the application trend of the type medicament is to develop to low dosage.
Summary of the invention:
The object of the present invention is to provide a kind of inhibiter, described this inhibiter will solve inhibiter of the prior art and add that dosage is big, cost is high, the technical problem of contaminate environment.
Inhibiter of the present invention is by Sodium Nitrite, borate, the organic phospho acid compounds, organic amine, the aromatic series azole compounds, vinylformic acid sulfonic acid terpolymer, solid base and water are formed, wherein, the weight percent of described Sodium Nitrite in inhibiter is 5.0%～30.0%, the weight percent of described borate in inhibiter is 1.0%～8.0%, the weight percent of described organic phospho acid compounds in inhibiter is 0.5%～4.0%, the weight percent of described organic amine in inhibiter is 1.0%～4.0%, the weight percent of described aromatic series azole compounds in inhibiter is 0.1%～0.5%, the weight percent of described vinylformic acid sulfonic acid terpolymer in inhibiter is 1.0%～5.0%, the weight percent of described solid base in inhibiter is 0.5%～7.0%, and surplus is a water.
Further, described borate is selected from Sodium Tetraborate or potassium borate.
Further, described organic phospho acid compounds is selected from 2-HPAA (HPAA) or 2-phosphinylidyne butane-1,2,4-tricarboxylic acid (PBTC).
Further, described organic amine is selected from Monoethanolamine MEA BASF (MEA) or diethanolamine (DEA) or trolamine (TEA).
Further, described aromatic series azole compounds selected from mercapto benzene a pair of horses going side by side thiazole (MBT), tolyltriazole (TTA), benzotriazole (BTA).
Further, described solid base is selected from potassium hydroxide or sodium hydroxide.
Know-why of the present invention is as follows: (1) is composite with Sodium Nitrite and borate, organic phospho acid compounds, organic amine, aromatic series azole compounds, vinylformic acid sulfonic acid terpolymer, solid base, by the synergy between component, strengthen corrosion mitigating effect, thereby reduce the consumption of Sodium Nitrite significantly.(2) add borate (comprising Sodium Tetraborate, potassium borate) in prescription, its toxicity is low, as a kind of oxidized form inhibiter, promotes positive column, metallic surface dense oxidation film to form with Sodium Nitrite, makes metal surface passivation.Borax has tangible shock absorption to PH in the water coolant simultaneously, and in alkaline medium, its corrosion mitigating effect is better than sodium bicarbonate and sodium dichromate 99.(3) introduce organic phospho acid compounds (comprising HPAA, PBTC), mainly be this product Heat stability is good, compare with other conventional organic phosphines such as HEDP, ATMP, DTPMP, phosphorous low, can form oxide film or precipitation membrane at the ferrous metal cathode surface, adapt to soft water quality and high-temperature heat-exchanging.(4) organic amine comprises MEA, DEA and TEA in this prescription, and it promptly is a tensio-active agent, is again inhibiter, but also as the solubilizing agent of aromatic series azole compounds.(5) the aromatic series azole compounds comprises MBT, BTA and TTA in this prescription, and copper and alloy are had good corrosion inhibition, and is effective equally to ferrous metal.(6) solid base comprises KOH and NaOH in the prescription, mainly works to regulate pH value in this prescription.(7) vinylformic acid sulfonic acid terpolymer plays dissemination in this prescription, stops dirt to deposit in the metallic surface.
The present invention is composite by Sodium Nitrite and other materials, by the synergy between component, improves corrosion mitigating effect, with the nitrite dosage (with NO
2-meter) is reduced to 50～60mg/L from 400～500mg/L, reduces the consumption of poisonous Sodium Nitrite significantly, reduce influence environment with this, and reduction processing costs, because good synergistic, corrosion inhibition is more excellent, obtains bigger society and economic benefit thus.Inhibiter use of the present invention is done inhibiter in Steel Plant's blast furnace, the airtight cooling water system of electric furnace, can be with NO in the water coolant
2 -Content is reduced to 50～60mg/L from 400～500mg/L, reduced influence to environment, because good synergistic, compare with present conventional nitrite corrosion inhibitor, medicament expense reduces more than 1/2, corrosion mitigating effect is good, corrosion of carbon steel rate≤0.075mm/a, copper, copper alloy, Corrosion of Stainless Steel rate≤0.005mm/a.
Embodiment:
Embodiment 1
This example adopts 20# carbon steel, red copper, stainless steel lacing film (I type, surface-area 28CM
2) carry out corrosion test.
Inhibiter proportioning: Sodium Nitrite 22.7%, Sodium Tetraborate 2%, HPAA2%, TEA2%, BTA0.3%, vinylformic acid sulfonic acid terpolymer 1.5%, NaOH 4%, H
2O 65.5%.
Test water quality: PH6.8, specific conductivity 56us/cm, M-basicity are (with CaCO
3Meter) 87mg/L, Ca
2+(with CaCO
3Meter) 0.5mg/L, total hardness are (with CaCO
3Meter) 0.8mg/L, Cl-7mg/L.
With reference to the GB18175-2000 standard, adopt above-mentioned inhibiter and water quality to be rotated coupon corrosion test, 45 ℃ of test water temperatures, rotating speed 75r/min, operation 72h, inhibiter add-on 400mg/L records 20# carbon steel lacing film erosion rate 0.024mm/a, red copper lacing film erosion rate 0.0004mm/a, stainless steel lacing film erosion rate 0.0001mm/a.
Embodiment 2
Present embodiment is used in a steel-making softening water closed system, by 20# carbon steel, brass lacing film (II type, surface-area 20CM
2) carry out daily effect monitoring.
Inhibiter proportioning: Sodium Nitrite 22%, Sodium Tetraborate 2%, HPAA 3%, TEA 2%, BTA 0.3%, vinylformic acid sulfonic acid terpolymer 2%, NaOH 4%, H
2O 64.7%.
System parameter:
Make up water water quality:
Under above-mentioned operating mode and condition of water quality, add inhibiter 400mg/L to system, in the set lacing film case of four subsystems (B1, B2, B3, B4), hang 20# carbon steel and brass lacing film respectively, in September, 2006 time is to November, the field monitoring lacing film was handled erosion rate such as following table with reference to lacing film treatment process in the GB18175-2000 standard in every month:
From monitoring data, corrosion mitigating effect is good.
Claims (6)
1. inhibiter, it is characterized in that: by Sodium Nitrite, borate, the organic phospho acid compounds, organic amine, the aromatic series azole compounds, vinylformic acid sulfonic acid terpolymer, solid base and water are formed, wherein, the weight percent of described Sodium Nitrite in inhibiter is 5.0%～30.0%, the weight percent of described borate in inhibiter is 1.0%～8.0%, the weight percent of described organic phospho acid compounds in inhibiter is 0.5%～4.0%, the weight percent of described organic amine in inhibiter is 1.0%～4.0%, the weight percent of described aromatic series azole compounds in inhibiter is 0.1%～0.5%, the weight percent of described vinylformic acid sulfonic acid terpolymer in inhibiter is 1.0%～5.0%, the weight percent of described solid base in inhibiter is 0.5%～7.0%, and surplus is a water.
2. inhibiter as claimed in claim 1 is characterized in that: described borate is selected from Sodium Tetraborate or potassium borate.
3. inhibiter as claimed in claim 1 is characterized in that: described organic phospho acid compounds is selected from 2-HPAA or 2-phosphinylidyne butane-1,2,4-tricarboxylic acid.
4. inhibiter as claimed in claim 1 is characterized in that: described organic amine is selected from Monoethanolamine MEA BASF or diethanolamine or trolamine.
5. inhibiter as claimed in claim 1 is characterized in that: described aromatic series azole compounds selected from mercapto benzene a pair of horses going side by side thiazole or tolyltriazole or benzotriazole.
6. inhibiter as claimed in claim 1 is characterized in that: described solid base is selected from potassium hydroxide or sodium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100391601A CN101607765A (en) | 2008-06-18 | 2008-06-18 | Inhibiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100391601A CN101607765A (en) | 2008-06-18 | 2008-06-18 | Inhibiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101607765A true CN101607765A (en) | 2009-12-23 |
Family
ID=41481692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100391601A Pending CN101607765A (en) | 2008-06-18 | 2008-06-18 | Inhibiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101607765A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304715A (en) * | 2011-08-30 | 2012-01-04 | 吴江市精工铝字制造厂 | Aluminum alloy corrosion inhibitor |
| CN102452725A (en) * | 2010-10-20 | 2012-05-16 | 中国石油化工股份有限公司 | Composite scale and corrosion inhibitor and its application |
| CN102633373A (en) * | 2012-04-19 | 2012-08-15 | 上海工业锅炉研究所 | Composite-type water quality protective agent for household heating system |
| CN103613211A (en) * | 2013-12-04 | 2014-03-05 | 北京安镁瑞普环保技术开发有限公司 | Scale remover on industrial products |
| CN103695929A (en) * | 2013-12-03 | 2014-04-02 | 李洪社 | Organic corrosion inhibitor for inhibiting metal corrosion in sealed water system |
| CN106630203A (en) * | 2016-12-12 | 2017-05-10 | 中化化工科学技术研究总院 | Scale and corrosion inhibitor for air conditioner cooling water treatment, preparation method of scale and corrosion inhibitor and treatment method of air conditioner cooling water |
| CN109796086A (en) * | 2017-11-16 | 2019-05-24 | 柳州市皇盛环保科技有限公司 | A kind of scale inhibitor for industrial circulating cooling water |
| CN111032918A (en) * | 2017-09-01 | 2020-04-17 | 阿科玛法国公司 | Metal corrosion inhibitor |
| CN113930221A (en) * | 2021-10-27 | 2022-01-14 | 常州市鑫光化工科技有限公司 | Special cooling liquid for diesel locomotive |
-
2008
- 2008-06-18 CN CNA2008100391601A patent/CN101607765A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452725A (en) * | 2010-10-20 | 2012-05-16 | 中国石油化工股份有限公司 | Composite scale and corrosion inhibitor and its application |
| CN102452725B (en) * | 2010-10-20 | 2015-01-14 | 中国石油化工股份有限公司 | Composite scale and corrosion inhibitor and its application |
| CN102304715A (en) * | 2011-08-30 | 2012-01-04 | 吴江市精工铝字制造厂 | Aluminum alloy corrosion inhibitor |
| CN102633373B (en) * | 2012-04-19 | 2014-01-22 | 上海工业锅炉研究所 | Composite-type water quality protective agent for household heating system |
| CN102633373A (en) * | 2012-04-19 | 2012-08-15 | 上海工业锅炉研究所 | Composite-type water quality protective agent for household heating system |
| CN103695929A (en) * | 2013-12-03 | 2014-04-02 | 李洪社 | Organic corrosion inhibitor for inhibiting metal corrosion in sealed water system |
| CN103695929B (en) * | 2013-12-03 | 2017-02-08 | 李洪社 | Organic corrosion inhibitor for inhibiting metal corrosion in sealed water system |
| CN103613211A (en) * | 2013-12-04 | 2014-03-05 | 北京安镁瑞普环保技术开发有限公司 | Scale remover on industrial products |
| CN106630203A (en) * | 2016-12-12 | 2017-05-10 | 中化化工科学技术研究总院 | Scale and corrosion inhibitor for air conditioner cooling water treatment, preparation method of scale and corrosion inhibitor and treatment method of air conditioner cooling water |
| CN106630203B (en) * | 2016-12-12 | 2022-07-08 | 中化化工科学技术研究总院有限公司 | Scale and corrosion inhibitor for air conditioner cooling water treatment, preparation method thereof and air conditioner cooling water treatment method |
| CN111032918A (en) * | 2017-09-01 | 2020-04-17 | 阿科玛法国公司 | Metal corrosion inhibitor |
| US11788192B2 (en) | 2017-09-01 | 2023-10-17 | Arkema France | Inhibitors of metal corrosion |
| CN109796086A (en) * | 2017-11-16 | 2019-05-24 | 柳州市皇盛环保科技有限公司 | A kind of scale inhibitor for industrial circulating cooling water |
| CN113930221A (en) * | 2021-10-27 | 2022-01-14 | 常州市鑫光化工科技有限公司 | Special cooling liquid for diesel locomotive |
| CN113930221B (en) * | 2021-10-27 | 2023-12-26 | 常州市鑫光新材料科技有限公司 | Special coolant for diesel locomotive |
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Open date: 20091223 |