CN104310607A - Compound corrosion inhibitor used for boiler water - Google Patents
Compound corrosion inhibitor used for boiler water Download PDFInfo
- Publication number
- CN104310607A CN104310607A CN201410564973.8A CN201410564973A CN104310607A CN 104310607 A CN104310607 A CN 104310607A CN 201410564973 A CN201410564973 A CN 201410564973A CN 104310607 A CN104310607 A CN 104310607A
- Authority
- CN
- China
- Prior art keywords
- parts
- corrosion inhibitor
- feedwater
- benzotriazole
- zinc sulfate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
- C02F5/145—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/105—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances combined with inorganic substances
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention belongs to the technical field of water treatment and in particular relates to a compound corrosion inhibitor used for boiler water. The compound corrosion inhibitor comprises the following components in parts by weight: sodium polyacrylate, benzotriazole, zinc sulfate, citric acid and 1-hydroxyethenyl-1,1-diphosphonic acid. The compound corrosion inhibitor is convenient to use, has low toxicity, is tasteless and has good dispersibility.
Description
Technical field
The invention belongs to the technical field of water treatment, be specifically related to a kind of composite corrosion inhibitor for feedwater.
Background technology
Feedwater plays the important and pivotal role in boiler systems, but feedwater used has certain corrosive property, and when water temperature is higher than under the various occasions of envrionment temperature, corrosion can bring serious consequence.When it can be used as medium for industrial boiler system, can water quality deterioration be caused, the problems such as corrodibility increase occur, causes boiler and pipeline leakage, have a strong impact on production equipment and normally run.Develop the progress with technology rapidly along with socioeconomic, water technology comes into one's own day by day, by using water treatment agent can effectively protection against corrosion, thus the utilization ratio of raising equipment and water and reach the object of saving water source and the energy.Increasingly strict to the water treatment standard of inhibition at present, high requirement be it is also proposed to the feature of environmental protection of additive simultaneously.
Summary of the invention
The object of the invention is to the defect for above-mentioned existence and provide a kind of composite corrosion inhibitor for feedwater, this composite corrosion inhibitor is easy to use, and toxicity is little, and tasteless dispersing property is good.
Technical scheme of the present invention is: a kind of composite corrosion inhibitor for feedwater, is made up of the component of following weight part:
Sodium orthomolybdate 14.5 ~ 20.5 parts
Benzotriazole 6.3 ~ 10.1 parts
5 ~ 8 parts, zinc sulfate
Citric acid 3.7 ~ 9.3 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 1.8 ~ 4.1 parts.
The described composite corrosion inhibitor for feedwater, is made up of the component of following weight part:
Sodium orthomolybdate 15.83 parts
Benzotriazole 7.7 parts
5.85 parts, zinc sulfate
Citric acid 4.9 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 2.72 parts.
The described composite corrosion inhibitor for feedwater, is made up of the component of following weight part:
Sodium orthomolybdate 17.43 parts
Benzotriazole 8.15 parts
6.35 parts, zinc sulfate
Citric acid 5.27 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 3.13 parts.
The described composite corrosion inhibitor for feedwater, is made up of the component of following weight part:
Sodium orthomolybdate 18.19 parts
Benzotriazole 8.7 parts
7.41 parts, zinc sulfate
Citric acid 6.63 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 3.42 parts.
The described composite corrosion inhibitor for feedwater, is made up of the component of following weight part:
Sodium orthomolybdate 19.6 parts
Benzotriazole 9.53 parts
7.8 parts, zinc sulfate
Citric acid 7.95 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 2.53 parts.
Beneficial effect of the present invention is: of the present invention little for the component toxicity in the composite corrosion inhibitor of feedwater, little to environmental influence, there is good corrosion inhibition, prevent feedwater to the corrosion of metallic conduit, corrosion mitigating effect reaches 97.8% ~ 98.88%, makes its corrosion rate be reduced to 0.0019 ~ 0.00249mm/a; Also there is good scale inhibition effect simultaneously.
In sum, described composite corrosion inhibitor is easy to use, and toxicity is little, and tasteless dispersing property is good.
Embodiment
Below by specific embodiment, the present invention will be described in detail.
Embodiment 1
For a composite corrosion inhibitor for feedwater, be made up of the component of following weight part:
Sodium orthomolybdate 15 parts
Benzotriazole 7 parts
5 parts, zinc sulfate
Citric acid 4 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 2 parts.
Adopt composite corrosion inhibitor described in embodiment 1 to make corrosion mitigating effect reach 97.8%, make its corrosion rate be reduced to 0.0019mm/a.
Embodiment 2
The described composite corrosion inhibitor for feedwater, is made up of the component of following weight part:
Sodium orthomolybdate 15.83 parts
Benzotriazole 7.7 parts
5.85 parts, zinc sulfate
Citric acid 4.9 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 2.72 parts.
Adopt composite corrosion inhibitor described in embodiment 2 to make corrosion mitigating effect reach 98.1%, make its corrosion rate be reduced to 0.0021mm/a.
Embodiment 3
The described composite corrosion inhibitor for feedwater, is made up of the component of following weight part:
Sodium orthomolybdate 17.43 parts
Benzotriazole 8.15 parts
6.35 parts, zinc sulfate
Citric acid 5.27 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 3.13 parts.
Adopt composite corrosion inhibitor described in embodiment 3 to make corrosion mitigating effect reach 98.5%, make its corrosion rate be reduced to 0.00227mm/a.
Embodiment 4
The described composite corrosion inhibitor for feedwater, is made up of the component of following weight part:
Sodium orthomolybdate 18.19 parts
Benzotriazole 8.7 parts
7.41 parts, zinc sulfate
Citric acid 6.63 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 3.42 parts.
Adopt composite corrosion inhibitor described in embodiment 4 to make corrosion mitigating effect reach 97.93%, make its corrosion rate be reduced to 0.00211mm/a.
Embodiment 5
The described composite corrosion inhibitor for feedwater, is made up of the component of following weight part:
Sodium orthomolybdate 19.6 parts
Benzotriazole 9.53 parts
7.8 parts, zinc sulfate
Citric acid 7.95 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 2.53 parts.
Adopt composite corrosion inhibitor described in embodiment 5 to make corrosion mitigating effect reach 98.57%, make its corrosion rate be reduced to 0.00239mm/a.
Embodiment 6
For a composite corrosion inhibitor for feedwater, be made up of the component of following weight part:
Sodium orthomolybdate 20 parts
Benzotriazole 10 parts
8 parts, zinc sulfate
Citric acid 9 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 4 parts.
Adopt composite corrosion inhibitor described in embodiment 6 to make corrosion mitigating effect reach 98.88%, make its corrosion rate be reduced to 0.00249mm/a.
Claims (5)
1. for a composite corrosion inhibitor for feedwater, it is characterized in that, be made up of the component of following weight part:
Sodium orthomolybdate 14.5 ~ 20.5 parts
Benzotriazole 6.3 ~ 10.1 parts
5 ~ 8 parts, zinc sulfate
Citric acid 3.7 ~ 9.3 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 1.8 ~ 4.1 parts.
2. according to claim 1 for the composite corrosion inhibitor of feedwater, it is characterized in that, be made up of the component of following weight part:
Sodium orthomolybdate 15.83 parts
Benzotriazole 7.7 parts
5.85 parts, zinc sulfate
Citric acid 4.9 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 2.72 parts.
3. according to claim 1 for the composite corrosion inhibitor of feedwater, it is characterized in that, be made up of the component of following weight part:
Sodium orthomolybdate 17.43 parts
Benzotriazole 8.15 parts
6.35 parts, zinc sulfate
Citric acid 5.27 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 3.13 parts.
4. according to claim 1 for the composite corrosion inhibitor of feedwater, it is characterized in that, be made up of the component of following weight part:
Sodium orthomolybdate 18.19 parts
Benzotriazole 8.7 parts
7.41 parts, zinc sulfate
Citric acid 6.63 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 3.42 parts.
5. according to claim 1 for the composite corrosion inhibitor of feedwater, it is characterized in that, be made up of the component of following weight part:
Sodium orthomolybdate 19.6 parts
Benzotriazole 9.53 parts
7.8 parts, zinc sulfate
Citric acid 7.95 parts
1-hydroxyethylidine-1,1-di 2 ethylhexyl phosphonic acid 2.53 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564973.8A CN104310607A (en) | 2014-10-22 | 2014-10-22 | Compound corrosion inhibitor used for boiler water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564973.8A CN104310607A (en) | 2014-10-22 | 2014-10-22 | Compound corrosion inhibitor used for boiler water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104310607A true CN104310607A (en) | 2015-01-28 |
Family
ID=52365960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410564973.8A Pending CN104310607A (en) | 2014-10-22 | 2014-10-22 | Compound corrosion inhibitor used for boiler water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104310607A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106315881A (en) * | 2016-10-13 | 2017-01-11 | 无锡普立顺环保科技有限公司 | Multifunctional reverse osmosis scale inhibitor |
| CN111455393A (en) * | 2020-05-15 | 2020-07-28 | 武汉金鼎新环保科技有限公司 | Compound type soft water special corrosion inhibitor and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5192447A (en) * | 1991-07-09 | 1993-03-09 | Nalco Chemical Company | Use of molybdate as a cooling water corrosion inhibitor at higher temperatures |
| CN1112601A (en) * | 1995-05-08 | 1995-11-29 | 化学工业部北京化工研究院 | Corrosion inhibitor for refrigerating fluid |
| CN1915866A (en) * | 2006-09-07 | 2007-02-21 | 武汉钢铁(集团)公司 | Long effective environmental protection type corrosion inhibitor for inclosed recirculated cooling water |
| CN101412565A (en) * | 2008-11-28 | 2009-04-22 | 武汉海力科技化工有限公司 | Efficient scale corrosion inhibitor for carbon steel system |
| CN101734805A (en) * | 2009-12-15 | 2010-06-16 | 娄底市裕德科技有限公司 | Antiincrustation corrosion inhibitor for treating circulating cooling water |
| CN101928077A (en) * | 2010-08-30 | 2010-12-29 | 天津精华石化有限公司 | Low-phosphorus corrosion and scale inhibitor |
| CN102351325A (en) * | 2011-08-29 | 2012-02-15 | 山东天庆科技发展有限公司 | Anti-scaling corrosion inhibitor for grey water recycling and preparation method thereof |
| CN102923868A (en) * | 2012-11-15 | 2013-02-13 | 天津大学 | Composite corrosion and scale inhibitor for reclaimed water as circulating cooling water of power plant |
| CN103663744A (en) * | 2013-12-09 | 2014-03-26 | 山东华亚环保科技有限公司 | Composite corrosion and scale inhibitor for circulating cooling water |
-
2014
- 2014-10-22 CN CN201410564973.8A patent/CN104310607A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5192447A (en) * | 1991-07-09 | 1993-03-09 | Nalco Chemical Company | Use of molybdate as a cooling water corrosion inhibitor at higher temperatures |
| CN1112601A (en) * | 1995-05-08 | 1995-11-29 | 化学工业部北京化工研究院 | Corrosion inhibitor for refrigerating fluid |
| CN1915866A (en) * | 2006-09-07 | 2007-02-21 | 武汉钢铁(集团)公司 | Long effective environmental protection type corrosion inhibitor for inclosed recirculated cooling water |
| CN101412565A (en) * | 2008-11-28 | 2009-04-22 | 武汉海力科技化工有限公司 | Efficient scale corrosion inhibitor for carbon steel system |
| CN101734805A (en) * | 2009-12-15 | 2010-06-16 | 娄底市裕德科技有限公司 | Antiincrustation corrosion inhibitor for treating circulating cooling water |
| CN101928077A (en) * | 2010-08-30 | 2010-12-29 | 天津精华石化有限公司 | Low-phosphorus corrosion and scale inhibitor |
| CN102351325A (en) * | 2011-08-29 | 2012-02-15 | 山东天庆科技发展有限公司 | Anti-scaling corrosion inhibitor for grey water recycling and preparation method thereof |
| CN102923868A (en) * | 2012-11-15 | 2013-02-13 | 天津大学 | Composite corrosion and scale inhibitor for reclaimed water as circulating cooling water of power plant |
| CN103663744A (en) * | 2013-12-09 | 2014-03-26 | 山东华亚环保科技有限公司 | Composite corrosion and scale inhibitor for circulating cooling water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106315881A (en) * | 2016-10-13 | 2017-01-11 | 无锡普立顺环保科技有限公司 | Multifunctional reverse osmosis scale inhibitor |
| CN111455393A (en) * | 2020-05-15 | 2020-07-28 | 武汉金鼎新环保科技有限公司 | Compound type soft water special corrosion inhibitor and preparation method thereof |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |