CN105645604A - Low-phosphorus scale and corrosion inhibitor - Google Patents

Low-phosphorus scale and corrosion inhibitor Download PDF

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Publication number
CN105645604A
CN105645604A CN201610254561.3A CN201610254561A CN105645604A CN 105645604 A CN105645604 A CN 105645604A CN 201610254561 A CN201610254561 A CN 201610254561A CN 105645604 A CN105645604 A CN 105645604A
Authority
CN
China
Prior art keywords
corrosion inhibitor
low
acid
scale
molybdate
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.)
Pending
Application number
CN201610254561.3A
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Chinese (zh)
Inventor
潘福昆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201610254561.3A priority Critical patent/CN105645604A/en
Publication of CN105645604A publication Critical patent/CN105645604A/en
Pending legal-status Critical Current

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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
    • 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
    • C02F5/12—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 nitrogen
    • C02F5/125—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 nitrogen 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
    • C02F5/14—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
    • C02F2303/00—Specific treatment goals
    • C02F2303/08—Corrosion inhibition

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  • Chemical & Material Sciences (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)
  • Inorganic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

The invention discloses a low-phosphorus scale and corrosion inhibitor which is composed of the following components in percentage by weight: 8-15% of polyaspartic acid, 5-8% of tungstate, 5-8% of molybdate, 8-15% of nitromalonic acid, 20-30% of hydroxyethylidenediphosphonic acid, 4-7% of hydroxy ethidene bis phosphoric acid and the balance of water. The scale and corrosion inhibitor is easy to prepare, and has the advantages of high stability and favorable corrosion and scale inhibition properties.

Description

A kind of low-phosphorus antiincrustation corrosion inhibitor
Technical field
The present invention relates to chemical technology field, be specifically related to a kind of low-phosphorus antiincrustation corrosion inhibitor.
Background technology
Corrosion inhibiter is a kind of when being present in environment (medium) with suitable concentration and form, it is possible to prevent or slow down the chemical substance of corrosion or the mixture of several chemical substance. In industry, the utilization of recirculated water is conducive to saving the cost of enterprise, improve the benefit of enterprise, but recirculated water in use there will be two problems, the evaporation of moisture when one, causes crystallization and the precipitation of salt, and modal have the incrustation scale such as calcium carbonate, calcium silicates, the existence of incrustation scale greatly reduces heat transfer efficiency, it two is the electrochemical corrosion corrosiveness to equipment of recirculated water, and this corrosion is fatal, gently then more exchange device; Heavy then injure human life, currently mainly adopt anti-incrustation corrosion inhibitor to be added in recirculated water, reduce the appearance of incrustation scale. But the composition of anti-incrustation corrosion inhibitor at present on the market is single, and scale removal effect is bad, particularly with the treatment effect of modal calcium carbonate etc. bad, this is the deficiencies in the prior art.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the technical problem to be solved in the present invention is to provide a kind of new low-phosphorus antiincrustation corrosion inhibitor, and its scale inhibitor is effective, stability is strong.
The present invention adopts the technical scheme that:
A kind of low-phosphorus antiincrustation corrosion inhibitor, is made up of following component by weight percentage:
Poly-aspartate 8-15%
Tungstates 5-8%
Molybdate 5-8%
Nitro malonic acid 8-15%
Hydroxy ethylene diphosphonic acid 20-30%
1-hydroxy ethylidene-1,1-diphosphonic acid 4-7%
Surplus is water.
Described tungstates is sodium tungstate.
Described molybdate is sodium molybdate.
The invention have the advantage that
1, the anti-incrustation corrosion inhibitor of the present invention is without toxic compounds and inorganic phosphate, low stain, is beneficial to environmental conservation;
2, the anti-incrustation corrosion inhibitor of the present invention is easily prepared, good stability, has good inhibition and scale-inhibiting properties.
Detailed description of the invention
Below embodiments of the invention are described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention being made apparent clear and definite defining.
Embodiment 1
A kind of low-phosphorus antiincrustation corrosion inhibitor, is made up of following component by weight percentage:
Poly-aspartate 8%
Sodium tungstate 5%
Sodium molybdate 5%
Nitro malonic acid 8%
Hydroxy ethylene diphosphonic acid 20%
1-hydroxy ethylidene-1,1-diphosphonic acid 4%
Surplus is water.
Embodiment 2
A kind of low-phosphorus antiincrustation corrosion inhibitor, is made up of following component by weight percentage:
Poly-aspartate 11.5%
Sodium tungstate 6.5%
Sodium molybdate 6.5%
Nitro malonic acid 11.5%
Hydroxy ethylene diphosphonic acid 25%
1-hydroxy ethylidene-1,1-diphosphonic acid 5.5%
Surplus is water.
Embodiment 3
A kind of low-phosphorus antiincrustation corrosion inhibitor, is made up of following component by weight percentage:
Poly-aspartate 15%
Sodium tungstate 8%
Sodium molybdate 8%
Nitro malonic acid 15%
Hydroxy ethylene diphosphonic acid 30%
1-hydroxy ethylidene-1,1-diphosphonic acid 7%
Surplus is water.
Former water calcium hardness (with calcium carbonate) 300mg/L, add the anti-incrustation corrosion inhibitor of the embodiment of the present invention 2 preparation of 40mg/L, by detect heat exchanger monitor carbon steel experiment tube corrosion rate to be 0.01031mm/a, rustless steel experiment tube corrosion rate be 0.000112mm/a, pyrite experiment tube corrosion rate are 0.0000937mm/a, dirtiness resistance is/1.05 �� 10-4m2��K/W��

Claims (3)

1. a low-phosphorus antiincrustation corrosion inhibitor, it is characterised in that be made up of following component by weight percentage:
Poly-aspartate 8-15%
Tungstates 5-8%
Molybdate 5-8%
Nitro malonic acid 8-15%
Hydroxy ethylene diphosphonic acid 20-30%
1-hydroxy ethylidene-1,1-diphosphonic acid 4-7%
Surplus is water.
2. low-phosphorus antiincrustation corrosion inhibitor according to claim 1, it is characterised in that described tungstates is sodium tungstate.
3. low-phosphorus antiincrustation corrosion inhibitor according to claim 1, it is characterised in that described molybdate is sodium molybdate.
CN201610254561.3A 2016-04-22 2016-04-22 Low-phosphorus scale and corrosion inhibitor Pending CN105645604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610254561.3A CN105645604A (en) 2016-04-22 2016-04-22 Low-phosphorus scale and corrosion inhibitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610254561.3A CN105645604A (en) 2016-04-22 2016-04-22 Low-phosphorus scale and corrosion inhibitor

Publications (1)

Publication Number Publication Date
CN105645604A true CN105645604A (en) 2016-06-08

Family

ID=56497469

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610254561.3A Pending CN105645604A (en) 2016-04-22 2016-04-22 Low-phosphorus scale and corrosion inhibitor

Country Status (1)

Country Link
CN (1) CN105645604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111646583A (en) * 2020-05-15 2020-09-11 大唐东北电力试验研究院有限公司 Low-phosphorus scale and corrosion inhibitor for reclaimed water reuse

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5788857A (en) * 1996-10-23 1998-08-04 Nalco Chemical Company Hydroxyimino alkylene phosphonic acids for corrosion and scale inhibition in aqueous systems
WO2000044677A1 (en) * 1999-01-28 2000-08-03 Ashland Inc. Scale and/or corrosion inhibiting composition
CN1958848A (en) * 2005-10-31 2007-05-09 中国石油化工股份有限公司 Method for restraining corrosion by circulating cooling water of containing sulphur
CN101077811A (en) * 2007-04-20 2007-11-28 上海电力学院 Low-phosphorus scale and corrosion inhibitor used for stainless steel tube steam condenser
CN102730848A (en) * 2011-04-02 2012-10-17 中国石油化工股份有限公司 Composite anti-incrustation corrosion inhibiter and its application in water treatment
CN103496794A (en) * 2013-09-26 2014-01-08 广东省石油化工研究院 Corrosion and scale inhibitor for treating circulating cooling water
CN103641244A (en) * 2013-12-23 2014-03-19 河南省科学院能源研究所有限公司 Low-phosphorous multifunctional molybdate corrosion inhibitor and preparation method thereof
CN104556420A (en) * 2013-10-12 2015-04-29 中国石油化工股份有限公司 Non-phosphorus composite corrosion and scale inhibitor and preparation method thereof, as well as corrosion and scale inhibition method of circulating cooling water

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5788857A (en) * 1996-10-23 1998-08-04 Nalco Chemical Company Hydroxyimino alkylene phosphonic acids for corrosion and scale inhibition in aqueous systems
WO2000044677A1 (en) * 1999-01-28 2000-08-03 Ashland Inc. Scale and/or corrosion inhibiting composition
CN1958848A (en) * 2005-10-31 2007-05-09 中国石油化工股份有限公司 Method for restraining corrosion by circulating cooling water of containing sulphur
CN101077811A (en) * 2007-04-20 2007-11-28 上海电力学院 Low-phosphorus scale and corrosion inhibitor used for stainless steel tube steam condenser
CN102730848A (en) * 2011-04-02 2012-10-17 中国石油化工股份有限公司 Composite anti-incrustation corrosion inhibiter and its application in water treatment
CN103496794A (en) * 2013-09-26 2014-01-08 广东省石油化工研究院 Corrosion and scale inhibitor for treating circulating cooling water
CN104556420A (en) * 2013-10-12 2015-04-29 中国石油化工股份有限公司 Non-phosphorus composite corrosion and scale inhibitor and preparation method thereof, as well as corrosion and scale inhibition method of circulating cooling water
CN103641244A (en) * 2013-12-23 2014-03-19 河南省科学院能源研究所有限公司 Low-phosphorous multifunctional molybdate corrosion inhibitor and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
于静敏，等: "海水中碳钢钨系复合缓蚀剂的研究", <<材料保护>> *
汪树清等: "羟基乙叉二膦酸的制备", 《茂名学院学报》 *
蒋拥华等: "羟基亚乙基二膦酸的合成", <<化学与生物工程>> *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111646583A (en) * 2020-05-15 2020-09-11 大唐东北电力试验研究院有限公司 Low-phosphorus scale and corrosion inhibitor for reclaimed water reuse

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Application publication date: 20160608