CN103553218B - A kind of composite corrosion inhibitor - Google Patents
A kind of composite corrosion inhibitor Download PDFInfo
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- CN103553218B CN103553218B CN201310440704.6A CN201310440704A CN103553218B CN 103553218 B CN103553218 B CN 103553218B CN 201310440704 A CN201310440704 A CN 201310440704A CN 103553218 B CN103553218 B CN 103553218B
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- corrosion inhibitor
- water
- composite corrosion
- gelatin
- hydrolysis liquid
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Abstract
The present invention relates to a kind of composite corrosion inhibitor, available cycles cold water process, gelatin hydrolysis liquid as inhibition component, adds sodium gluconate, sodium nitrite and water mix homogeneously and is prepared from, it is characterised in that: the component of this composite corrosion inhibitor and parts by weight are: gelatin hydrolysis liquid 5 ~ 20；Sodium gluconate 0.3 ~ 8；Sodium nitrite 1 ~ 4；Water surplus.The Main Ingredients and Appearance of gelatin hydrolysis liquid is aminoacid and polypeptide compound, uses it as composite corrosion inhibitor prepared by primary raw material and has the advantages such as biodegradable, safety and environmental protection, and can be substantially reduced composite corrosion inhibitor cost.
Description
Technical field
The present invention relates to a kind of composite corrosion inhibitor, belong to Chemical Engineering water treatment agent production technical field.
Background technology
Water is the basis that the mankind depend on for existence, is the lifeblood of commercial production operation, and Ye Shi China economic security and society are sent out
One of " three great strategy resources " of exhibition.Along with industrial, economic the developing rapidly of China, water for industrial use demand quickly increases, existing
The more aobvious anxiety of the contradiction of supply and demand for the water resource.Water Treatment Chemicals, also referred to as water treatment agent, it includes the aspects such as industry, urban construction, environmental protection
For the various medicaments of water treatment procedure, it is widely used in water for industrial use, is the important fine chemicals of a class.
In urban water, water for industrial use accounts for 80%, and cooling water account for sizable proportion in China's water for industrial use
(more than 1/3rd), therefore, the consumption saving cooling water is the key of water saving, is China's current and expected future Industrial Water Saving work
Emphasis, caused the great attention of national government department.Round the cycling and reutilization rate of raising industrial circulating cooling water,
Realize the reuse after Sewage advanced treatment, reduce the pollution to water resource, it is achieved low emission and zero-emission, industrial circulating cooling water
Process chemicals and also will be faced with the new market opportunity and challenge.
In water for industrial use, the water consumption of recirculated cooling water account for sizable proportion, and China is metallurgical, generating, oil, change
The industry industrial circulating water year water consumption such as work accounts for the 50 ~ 80% of water for industrial use total amount.As can be seen here, direct cooling water system is reduced
System, applies recirculating cooling water system, and improving recycle efficiency and the cooling water system of water for industrial use, to run cycles of concentration be joint
One of important channel of water, is also to solve the key link that China's water for industrial use is in short supply, reduce Sewage Water Emissions at present.But
It is, along with the raising of cycles of concentration, to run Ca in water2+、Mg2+、CO3 2-、HCO3 -Improve the most accordingly Deng the concentration of material, recirculated water
Water quality deteriorates further, is easily caused circulation corrosion and scaling and foundry loam grows.Prevent circulation corrosion and fouling
Common method be use water treatment agent.
In novel green corrosion inhibiter exploitation at present, it it is more successfully poly-aspartate.Poly-aspartate is water-soluble polymeric
Thing, is a kind of novel green water treatment agent, has without phosphorus, nontoxic, the nuisanceless and characteristic of fully biodegradable.Ion is had
Extremely strong sequestering power, has inhibition and scale inhibition double effects, the scaling salt classes such as calcium carbonate is had good scale inhibition effect, right
The scale inhibition performance of calcium carbonate, up to 100%, has peptizaiton simultaneously and can effectively prevent the corrosion of hardware.But it synthesizes system
Standby relatively costly.
Summary of the invention
It is an object of the invention to develop a kind of lower cost, composite corrosion inhibitor easy to use.This composite corrosion inhibitor
Feature is using gelatin hydrolysis liquid as main inhibition component, add sodium gluconate, sodium nitrite and the preparation of water mix homogeneously and
Become, in gelatin hydrolysis liquid, mainly contain aminoacid and polypeptide compound, be the Main Ingredients and Appearance of corrosion inhibiter, therefore it may only be necessary to bright
Compound other component a certain amount of on the basis of glue hydrolyzed solution, it is possible to obtain the composite corrosion inhibitor of super quality and competitive price.The present invention relates to
And composite corrosion inhibitor, it is characterised in that the component of this composite corrosion inhibitor and parts by weight are:
Gelatin hydrolysis liquid 5 ~ 20
Sodium gluconate 0.3 ~ 8
Sodium nitrite 1 ~ 4
Excess water adds 30 and is preferred.
Preferably component and parts by weight are:
Gelatin hydrolysis liquid 12 ~ 18
Sodium gluconate 0.6 ~ 4
Sodium nitrite 1.2 ~ 2
Excess water adds 30 and is preferred.
Gelatin hydrolysis liquid described in the present invention uses gelatin to be that raw material prepares, and preparation method is as follows:
Formula (parts by weight):
Gelatin 20
Aqueous solution of nitric acid 30 ~ 60.
The preparation technology of gelatin hydrolysis liquid: first gelatin is dried, then by formula by the aqueous solution of nitric acid that measures and
Gelatin is put in reactor, is warming up to more than 45 DEG C, preferably 50 ~ 65 DEG C, and reaction 2 ~ 8 is little, preferably 3 ~ 5 hours, reaction
After end, being cooled to less than 35 DEG C, products with sodium hydroxide is neutralized to pH value 7 ~ 8, obtains gelatin hydrolysis liquid.
The mass concentration of the aqueous solution of nitric acid of the gelatin hydrolysis described in the present invention is 10% ~ 25%, preferably 12 ~ 15%.
The water that the present invention says is without special handling, ordinary tap water.
Various raw materials mentioned by technique scheme all can be buied from domestic market.
Compared with prior art, the invention has the beneficial effects as follows:
1, product is the most phosphorous, has no adverse effects water body.
2, use gelatin hydrolysis liquid as composite corrosion inhibitor Main Components, can have fewer environmental impacts with biodegradation.
Detailed description of the invention
30 parts of water are put in mixing tank for coating colors by embodiment, are sequentially added into 15 parts of gelatin hydrolysis liquid, 1 part of sodium gluconate, and 1.5
Part sodium nitrite is stirred at room temperature 30 minutes, and discharging obtains mix homogeneously composite corrosion inhibitor.
The preparation technology of gelatin hydrolysis liquid: first gelatin is dried, 45 part of 15% nitric acid aqueous solution that then will measure by formula
Solution and 20 parts of gelatin are put in reactor, are warming up to 55 DEG C, react 4 hours, after reaction terminates, are cooled to less than 35 DEG C,
It is neutralized to pH value 7 ~ 8 with sodium hydroxide, obtains gelatin hydrolysis liquid.
Adding this composite corrosion inhibitor in when circulating cooling, keeping the concentration of composite corrosion inhibitor in recirculated water is 45mg/L.
Its result is:
| Mensuration project | Corrosion of Stainless Steel rate | Corrosion of carbon steel rate | Dirtiness resistance | Cycles of concentration |
| Unit | mm/a | mm/a | m2·K/W | With K+Meter |
| GB50050-2007 | <0.0 | <0.075 | <3.44╳10-4 | 5 |
| Embodiment | 0.00004 | 0.003372 | 6.22╳10-5 | 7.121 |
Example uses the four indices obtained to be superior to the regulation of GB50050-2007.
Claims (2)
1. a composite corrosion inhibitor, it is characterised in that: 30 parts of water are put in mixing tank for coating colors, is sequentially added into 15 parts of gelatin hydrolysis liquid, 1
Part sodium gluconate, 1.5 parts of sodium nitrite are stirred at room temperature 30 minutes, and discharging obtains mix homogeneously composite corrosion inhibitor.
2. the preparation method of a composite corrosion inhibitor as claimed in claim 1, it is characterised in that: the preparation work of gelatin hydrolysis liquid
Skill: first gelatin is dried, then by formula, measure 45 parts of 15% aqueous solution of nitric acid and 20 parts of gelatin are put into reactor
In, it is warming up to 55 DEG C, reacts 4 hours, after reaction terminates, be cooled to less than 35 DEG C, be neutralized to pH value 7 ~ 8 with sodium hydroxide,
Gelatin hydrolysis liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310440704.6A CN103553218B (en) | 2013-09-25 | 2013-09-25 | A kind of composite corrosion inhibitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310440704.6A CN103553218B (en) | 2013-09-25 | 2013-09-25 | A kind of composite corrosion inhibitor |
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| Publication Number | Publication Date |
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| CN103553218A CN103553218A (en) | 2014-02-05 |
| CN103553218B true CN103553218B (en) | 2016-09-28 |
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| CN201310440704.6A Active CN103553218B (en) | 2013-09-25 | 2013-09-25 | A kind of composite corrosion inhibitor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858917A (en) * | 2016-05-27 | 2016-08-17 | 泗洪雅苏中草药种植有限公司 | Traditional Chinese medicine water scale removal piece, water purifying piece and preparation method thereof |
| CN107619120B (en) * | 2016-07-13 | 2019-12-24 | 中国石油化工股份有限公司 | Phosphorus-free corrosion inhibitor, preparation method and application thereof, water treatment composition and application thereof |
| CN108048845A (en) * | 2017-11-24 | 2018-05-18 | 重庆赛格尔汽车配件有限公司 | A kind of air conditioner refrigerating copper pipe corrosion inhibiter and production technology |
| CN107937917A (en) * | 2017-11-24 | 2018-04-20 | 绩溪山合机械有限公司 | A kind of novel corrosion inhibitor for chain Passivation Treatment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319326A (en) * | 2007-06-05 | 2008-12-10 | 上海利康消毒高科技有限公司 | Inhibitor of glutaraldehyde bactericide |
| CN101831659A (en) * | 2009-03-09 | 2010-09-15 | 鞍钢股份有限公司 | Pickling inhibitor and using method thereof |
| CN102718974A (en) * | 2012-06-12 | 2012-10-10 | 陕西科技大学 | Method for preparing scaling inhibitor |
-
2013
- 2013-09-25 CN CN201310440704.6A patent/CN103553218B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319326A (en) * | 2007-06-05 | 2008-12-10 | 上海利康消毒高科技有限公司 | Inhibitor of glutaraldehyde bactericide |
| CN101831659A (en) * | 2009-03-09 | 2010-09-15 | 鞍钢股份有限公司 | Pickling inhibitor and using method thereof |
| CN102718974A (en) * | 2012-06-12 | 2012-10-10 | 陕西科技大学 | Method for preparing scaling inhibitor |
Non-Patent Citations (1)
| Title |
|---|
| 天然蛋白水解物对碳钢在硫酸介质中的缓蚀性能研究;旷亚非等;《材料科学》;19930430;第26卷(第4期);第12页右栏第8-10行、第13页左栏第4-16行、第15页右栏第17-23行 * |
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| CN103553218A (en) | 2014-02-05 |
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Effective date of registration: 20190203 Address after: 115099 No. 192 East Jinniushan Street, Yingkou City, Liaoning Province Patentee after: Yingkou Kelin Membrane Technology Engineering Service Co.,Ltd. Address before: 110168 Hunnan New Road, Hunnan New District, Shenyang, Liaoning 9 Patentee before: Shenyang Building Univ. |
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