CN101033551A - Acid pickling inhibitor and preparation method thereof - Google Patents
Acid pickling inhibitor and preparation method thereof Download PDFInfo
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- CN101033551A CN101033551A CN 200710078393 CN200710078393A CN101033551A CN 101033551 A CN101033551 A CN 101033551A CN 200710078393 CN200710078393 CN 200710078393 CN 200710078393 A CN200710078393 A CN 200710078393A CN 101033551 A CN101033551 A CN 101033551A
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- nitre
- inhibitor
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- restrainer
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Abstract
This invention relates to pickling inhibitor and its preparation method, in which, this invented product is composed of concentrated liquid of hexanitro-production waste water, organic inhibitor and a surface active agent. The preparation mehod includes: utilizing waste water in the production as the main material to evaporate, concentrate and filter it to remove impurities then adding small amount of organic inhibitor, inorganic inhibitor and surface active agent and mixing them to get the product.
Description
Technical field
The invention belongs to the anticorrosive metal technical field, particularly a kind of restrainer and preparation method thereof with slow corrosion inhibiting fog performance.
Background technology
Metal has very long history as the important engineering material in whole world widespread use, yet corrosion of metal also becomes a global problem thereupon.Because the financial loss brought to development and national economy of metallic corrosion accounts for 1.5%～4.2% of GDP then.Corrosion research person creates and has developed a lot of anticorrosive measures, and inhibiter because have that consumption is little, price is low, the source is wide, advantage such as effective and highly versatile, it is occupied an important position in various anti-corrosion methods, be widely used in each field of industrial sector.
Restrainer is a kind ofly can prevent metal corrosive inhibiter in acidic medium.At present used inhibiter mainly is the organic inhibitor of inorganic inhibitor and synthetic, exists problems such as unstable properties, production cost height, complicated process of preparation, environmental pollution are serious.Thereby industrial a kind of efficient, cost is low, technology is simple, pollution the is little novel corrosion inhibitor of exploitation that presses for.Utilize the main ingredient of such as the byproduct of medicine, food, industrial or agricultural etc. in recent years for inhibiter; carry out composite or the new inhibiter of modification processing development; this both administered " three wastes "; protected environment; the method of metal inhibitor is developed in utilization of waste material again, has become the important topic of domestic and international discussion.
Existing metal inhibitor that utilizes the refuse development and preparation method thereof, as application number is " corrosion inhibitors for acidic media and preparation method thereof " patent of 200410050400.X, disclosed is to be main raw material with the tankage in the methylparafynol production, carries out the metal inhibitor that composite processing development makes new advances.And for example application number is " a kind of metal pickling corrosion inhibitor and preparation method thereof " patent of 200610054043.3, disclosed is to be main raw material with animal hair hydrolyzed solution or the waste liquid of producing Gelucystine, carry out composite processing, develop well behaved metal inhibitor.
Summary of the invention
The objective of the invention is with the waste water in the 6-nitre production process is main raw material, and a kind of restrainer and preparation method thereof is provided.Inhibiter of the present invention not only can effectively prevent metallic corrosion, but also has good acid mist restraining effect.The inventive method can reduce production costs, realize that waste resource utilizes again, have efficient, low-cost, technology is simple, be beneficial to environmental protection, be convenient to characteristics such as industrial production.
The object of the present invention is achieved like this: a kind of restrainer is made up of 6-nitre factory effluent concentrated solution, organic inhibitor, inorganic inhibitor and tensio-active agent.A kind of preparation method of restrainer, utilize the waste water in the 6-nitre production process to be main raw material,, remove by filter precipitated impurities through after the evaporation concentration, add a spot of inorganic and organic inhibitor and tensio-active agent again, prepare a kind of restrainer of the present invention.Owing to contain a large amount of materials with corrosion inhibition in the waste water of 6-nitre production, the intramolecularly of these materials contains atom or atomic groups such as naphthalene nucleus and nitrogen, oxygen, sulphur, can be adsorbed on the metallic surface effectively, plays inhibition and acid mist restraining effect.The present invention is that main raw material prepares restrainer with 6-nitre factory effluent, the raw material abundance, and with low cost, technology is simple, and utilization of waste material has solved waste water handling problem again simultaneously, helps environment protection.
A kind of component of restrainer and weight percentage are:
6-nitre factory effluent concentrated solution 82～97%
Organic inhibitor 0.8～11%
Inorganic inhibitor 0.2～0.5%
Tensio-active agent 2～6.5%
Wherein: organic inhibitor is thiocarbamide or thiourea derivative or quaternary ammonium salt or urotropine or propiolic alcohol etc.; Inorganic inhibitor is a potassiumiodide; Tensio-active agent is Triton X-100 (OP) or polyoxyethylene glycol or peregal or Sodium dodecylbenzene sulfonate etc.
A kind of restrainer preparation method's concrete steps are as follows:
(1) preparation 6-nitre factory effluent concentrated solution
Earlier 6-nitre factory effluent is placed concentrating unit, carry out heating evaporation, be concentrated into 10～30% of original volume, stop heating, be cooled to room temperature, remove by filter precipitated impurities then, collect filtrate and be 6-nitre factory effluent concentrated solution.
(2) preparation restrainer
(1) step in (1) the 6-nitre factory effluent concentrated solution prepared of step, added organic inhibitor and inorganic inhibitor and tensio-active agent after finishing, and mixed and stirred, and just prepared the restrainer finished product.6-nitre factory effluent concentrated solution: organic inhibitor: inorganic inhibitor: the weight ratio of tensio-active agent is 100: (0.8～13.4): (0.21～0.61): (2.1～7.9).
Wherein: organic inhibitor is thiocarbamide or thiourea derivative or quaternary ammonium salt or urotropine or propiolic alcohol etc.; Inorganic inhibitor is a potassiumiodide; Tensio-active agent is Triton X-100 (OP) or polyoxyethylene glycol or peregal or Sodium dodecylbenzene sulfonate etc.
After the present invention adopts technique scheme, mainly contain following characteristics:
1. quality product height.Product of the present invention is a main raw material with 6-nitre factory effluent; owing in the waste water of 6-nitre production, contain a large amount of materials with corrosion inhibition; the intramolecularly of these materials contains atom or atomic groups such as naphthalene nucleus and nitrogen, oxygen, sulphur; can effectively be adsorbed on the metallic surface; play inhibition and acid mist restraining effect, but also made full use of waste water resource, help environment protection; so the quality height of product of the present invention, production cost is low.
2. consumption is few and corrosion mitigating effect good.Because the quality height of product of the present invention, its consumption only is 0.5%, and can suppress the acid mist rate also up to more than 95% up to more than 99% to the corrosion inhibition rate of metal, can effectively prolong the work-ing life of metallic substance.
3. technology is simple, low production cost.The present invention is a main raw material with 6-nitre factory effluent, and not only raw material is sufficient but also with low cost.The inventive method technology is simple, has further reduced production cost, is convenient to industrial production, helps applying.
Product of the present invention can be widely used in preventing that metallic substance acid solution when pickling is specially adapted to prevent the corrosion of ferrous materials when pickling to Corrosion of Metallic Materials.
Embodiment
Further specify the present invention below in conjunction with embodiment.
Embodiment 1
A kind of component of restrainer and weight percentage are: 6-nitre factory effluent concentrated solution 83%, urotropine organic inhibitor 10.8%, potassiumiodide inorganic inhibitor 0.4%, OP tensio-active agent 5.8%.
Embodiment 2
A kind of component of restrainer and weight percentage are: 6-nitre factory effluent concentrated solution 97%, thiocarbamide organic inhibitor 0.8%, potassiumiodide inorganic inhibitor 0.2%, polyglycol surfactants 2%.
Embodiment 3
A kind of component of restrainer and weight percentage are: 6-nitre factory effluent concentrated solution 82%, propiolic alcohol organic inhibitor 11%, potassiumiodide inorganic inhibitor 0.5%, Sodium dodecylbenzene sulfonate tensio-active agent 6.5%.
Embodiment 4
A kind of restrainer preparation method's concrete steps are as follows:
(1) preparation 6-nitre factory effluent concentrated solution
Earlier 6-nitre factory effluent is placed concentrating unit, carry out heating evaporation, be concentrated into 15% of original volume, stop heating and be cooled to room temperature, remove by filter precipitated impurities then, collect filtrate and be 6-nitre factory effluent concentrated solution.
(2) preparation restrainer
(1) step finish after, go on foot the 6-nitre factory effluent concentrated solution of preparing in (1): urotropine organic inhibitor: potassiumiodide inorganic inhibitor: the weight ratio of OP tensio-active agent is 100: 13: 0.56: 6.7 ratio, in 6-nitre factory effluent concentrated solution, add urotropine organic inhibitor and potassiumiodide inorganic inhibitor and OP tensio-active agent, with its mixing, and after stirring, just prepare restrainer.
Embodiment 5
A kind of restrainer preparation method's concrete steps are as follows:
(1) preparation 6-nitre factory effluent concentrated solution
Earlier 6-nitre factory effluent is placed concentrating unit, carry out heating evaporation, be concentrated into 10% of original volume, stop heating and be cooled to room temperature, remove by filter precipitated impurities then, collect filtrate and be 6-nitre factory effluent concentrated solution.
(2) preparation restrainer
(1) step finish after, go on foot the 6-nitre factory effluent concentrated solution of preparing in (1): thiocarbamide organic inhibitor: potassiumiodide inorganic inhibitor: the weight ratio of polyglycol surfactants is 100: 0.8: 0.21: 2.1 ratio, in 6-nitre factory effluent concentrated solution, add thiocarbamide organic inhibitor and potassiumiodide inorganic inhibitor and polyglycol surfactants, with its mixing, and after stirring, just prepare restrainer.
Embodiment 6
A kind of restrainer preparation method's concrete steps are as follows:
(1) preparation 6-nitre factory effluent concentrated solution
Earlier 6-nitre factory effluent is placed concentrating unit, carry out heating evaporation, be concentrated into 30% of original volume, stop heating and be cooled to room temperature, remove by filter precipitated impurities then, collect filtrate and be 6-nitre factory effluent concentrated solution.
(2) preparation restrainer
(1) step finish after, go on foot the 6-nitre factory effluent concentrated solution of preparing in (1): propiolic alcohol organic inhibitor: potassiumiodide inorganic inhibitor: the weight ratio of Sodium dodecylbenzene sulfonate tensio-active agent is 100: 13.4: 0.61: 0.79 ratio, in 6-nitre factory effluent concentrated solution, add propiolic alcohol organic inhibitor and potassiumiodide inorganic inhibitor and Sodium dodecylbenzene sulfonate tensio-active agent, with its mixing, and after stirring, just prepare restrainer.
Experimental result
With test product is the Q235 steel plate of 10.00 * 2.50 * 0.30cm, be immersed in entirely respectively in the sulphuric acid soln that contains the prepared restrainer that goes out of 0.5% embodiment 4～6, be in temperature that 60 ℃, sulphuric acid soln concentration are 20%, the time is under 4 hours the condition, carry out corrosion experiment and measurement respectively, its result is as follows:
| Embodiment | Organic inhibitor | Inorganic inhibitor | Tensio-active agent | Corrosion inhibition rate | Press down the mist rate |
| 4 | 13g | 0.56g | 6.7g | 99.5％ | 99％ |
| 5 | 0.8g | 0.21g | 2.1g | 99.1％ | 96％ |
| 6 | 13.4g | 0.61g | 7.9g | 99.0％ | 95％ |
Find out from measuring result: 100g6-nitre factory effluent concentrated solution, add the prepared inhibiter that goes out of a spot of different organic inhibitor and inorganic inhibitor and tensio-active agent, corrosion inhibition rate to steel plate is more than 99%, it presses down the mist rate and also is more than 95%, corrosion mitigating effect is good, and it is strong to press down the mist effect.
Claims (7)
1. restrainer is characterized in that its component and weight percentage are:
6-nitre factory effluent concentrated solution 82～97%
Organic inhibitor 0.8～11%
Inorganic inhibitor 0.2～0.5%
Tensio-active agent 2～6.5%
2. according to the described a kind of restrainer of claim 1, it is characterized in that described organic inhibitor is thiocarbamide or thiourea derivative or quaternary ammonium salt or urotropine or propiolic alcohol; Inorganic inhibitor is a potassiumiodide; Tensio-active agent is Triton X-100 or polyoxyethylene glycol or peregal or Sodium dodecylbenzene sulfonate.
3. according to the described a kind of restrainer of claim 1, the component and the weight percentage that it is characterized in that described a kind of restrainer are: 6-nitre factory effluent concentrated solution 83%, urotropine organic inhibitor 10.8%, potassiumiodide inorganic inhibitor 0.4%, OP tensio-active agent 5.8%; Or 6-nitre factory effluent concentrated solution 97%, thiocarbamide organic inhibitor 0.8%, potassiumiodide inorganic inhibitor 0.2%, polyglycol surfactants 2%; Or 6-nitre factory effluent concentrated solution 82%, propiolic alcohol organic inhibitor 11%, potassiumiodide inorganic inhibitor 0.5%, Sodium dodecylbenzene sulfonate tensio-active agent 6.5%.
4. the preparation method of a restrainer is characterized in that its concrete steps are as follows:
(1) preparation 6-nitre factory effluent concentrated solution
Earlier 6-nitre factory effluent is placed concentrating unit, carry out heating evaporation, be concentrated into 10～30% of original volume, stop heating and be cooled to room temperature, remove by filter crystalline impurity then, collect filtrate;
(2) preparation restrainer
(1) step finish after, go on foot in the 6-nitre factory effluent concentrated solution of preparing (1), add organic inhibitor and inorganic inhibitor and tensio-active agent, mixing also stirs, 6-nitre factory effluent concentrated solution: organic inhibitor: inorganic inhibitor: the weight ratio of tensio-active agent is 100: 0.8～13.4: 0.21～0.61: 2.1～7.9, and wherein: organic inhibitor is thiocarbamide or thiourea derivative or quaternary ammonium salt or urotropine or propiolic alcohol; Inorganic inhibitor is a potassiumiodide; Tensio-active agent is Triton X-100 or polyoxyethylene glycol or peregal or Sodium dodecylbenzene sulfonate.
5. the preparation method of a restrainer is characterized in that described a kind of restrainer preparation method's concrete steps are as follows:
(1) preparation 6-nitre factory effluent concentrated solution
Earlier 6-nitre factory effluent is placed concentrating unit, carry out heating evaporation, be concentrated into 15% of original volume, stop heating and be cooled to room temperature, remove by filter precipitated impurities then, collect filtrate;
(2) preparation restrainer
(1) step finish after, go on foot the 6-nitre factory effluent concentrated solution of preparing in (1): urotropine organic inhibitor: potassiumiodide inorganic inhibitor: the weight ratio of OP tensio-active agent is 100: 13: 0.56: 6.7 ratio, in 6-nitre factory effluent concentrated solution, add urotropine organic inhibitor and potassiumiodide inorganic inhibitor and OP tensio-active agent, with its mixing and stir.
6. the preparation method of a restrainer is characterized in that described a kind of restrainer preparation method's concrete steps are as follows:
(1) preparation 6-nitre factory effluent concentrated solution
Earlier 6-nitre factory effluent is placed concentrating unit, carry out heating evaporation, be concentrated into 10% of original volume, stop heating and be cooled to room temperature, remove by filter precipitated impurities then, collect filtrate;
(2) preparation restrainer
(1) step finish after, go on foot the 6-nitre factory effluent concentrated solution of preparing in (1): thiocarbamide organic inhibitor: potassiumiodide inorganic inhibitor: the weight ratio of polyglycol surfactants is 100: 0.8: 0.21: 2.1 ratio, in 6-nitre factory effluent concentrated solution, add thiocarbamide organic inhibitor and potassiumiodide inorganic inhibitor and polyglycol surfactants, with its mixing and stir.
7. the preparation method of a restrainer is characterized in that described a kind of restrainer preparation method's concrete steps are as follows:
(1) preparation 6-nitre factory effluent concentrated solution
Earlier 6-nitre factory effluent is placed concentrating unit, carry out heating evaporation, be concentrated into 30% of original volume, stop heating and be cooled to room temperature, remove by filter precipitated impurities then, collect filtrate;
(2) preparation restrainer
(1) step finish after, go on foot the 6-nitre factory effluent concentrated solution of preparing in (1): propiolic alcohol organic inhibitor: potassiumiodide inorganic inhibitor: the weight ratio of Sodium dodecylbenzene sulfonate tensio-active agent is 100: 13.4: 0.61: 0.79 ratio, in 6-nitre factory effluent concentrated solution, add propiolic alcohol organic inhibitor and potassiumiodide inorganic inhibitor and Sodium dodecylbenzene sulfonate tensio-active agent, with its mixing and stir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100783938A CN100491595C (en) | 2007-04-16 | 2007-04-16 | Acid pickling inhibitor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100783938A CN100491595C (en) | 2007-04-16 | 2007-04-16 | Acid pickling inhibitor and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101033551A true CN101033551A (en) | 2007-09-12 |
| CN100491595C CN100491595C (en) | 2009-05-27 |
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| CNB2007100783938A Expired - Fee Related CN100491595C (en) | 2007-04-16 | 2007-04-16 | Acid pickling inhibitor and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102732894A (en) * | 2011-03-31 | 2012-10-17 | 武汉润尔华科技有限公司 | Low-temperature corrosion inhibitor |
| CN103030225A (en) * | 2011-09-29 | 2013-04-10 | 中国石油化工股份有限公司 | Treatment process of circulating cooling water with leaked ammonia nitrogen |
| CN103820795A (en) * | 2014-01-22 | 2014-05-28 | 西南林业大学 | Efficient compounded corrosion inhibitor and preparation method and application thereof |
| CN104357856A (en) * | 2014-11-07 | 2015-02-18 | 南京溧水振兴船舶附件有限公司 | Ship metal surface pickling agent and preparation method thereof |
| CN104805447A (en) * | 2015-05-07 | 2015-07-29 | 苏州普纳斯电子有限公司 | Preparation method of acid fogging inhibitor |
| CN105297029A (en) * | 2015-11-20 | 2016-02-03 | 中国海洋石油总公司 | Crude oil decalcifying agent matched corrosion inhibitor and preparation method thereof |
| CN107418547A (en) * | 2017-08-29 | 2017-12-01 | 中国石油集团渤海钻探工程有限公司 | One kind is based on the high-temperature acidification corrosion inhibitor of tribenzyl (2 benzyl) pyridine ammonium chloride |
| CN107502882A (en) * | 2017-08-03 | 2017-12-22 | 苏州吉利不锈钢制品有限公司 | A kind of stainless steel Low corrison liquid and preparation method thereof |
| CN107523287A (en) * | 2017-08-29 | 2017-12-29 | 中国石油集团渤海钻探工程有限公司 | A kind of combined high temperature acidification corrosion inhibitor based on pyridines quaternary ammonium salt |
| CN110049637A (en) * | 2019-05-22 | 2019-07-23 | 昆山欧贝达电子科技有限公司 | The brownification treatment process of PCB substrate |
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2007
- 2007-04-16 CN CNB2007100783938A patent/CN100491595C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102732894A (en) * | 2011-03-31 | 2012-10-17 | 武汉润尔华科技有限公司 | Low-temperature corrosion inhibitor |
| CN103030225A (en) * | 2011-09-29 | 2013-04-10 | 中国石油化工股份有限公司 | Treatment process of circulating cooling water with leaked ammonia nitrogen |
| CN103030225B (en) * | 2011-09-29 | 2015-03-25 | 中国石油化工股份有限公司 | Treatment process of circulating cooling water with leaked ammonia nitrogen |
| CN103820795A (en) * | 2014-01-22 | 2014-05-28 | 西南林业大学 | Efficient compounded corrosion inhibitor and preparation method and application thereof |
| CN103820795B (en) * | 2014-01-22 | 2016-03-30 | 西南林业大学 | A kind of compound corrosion inhibitor and preparation method thereof and application |
| CN104357856A (en) * | 2014-11-07 | 2015-02-18 | 南京溧水振兴船舶附件有限公司 | Ship metal surface pickling agent and preparation method thereof |
| CN104805447B (en) * | 2015-05-07 | 2017-04-19 | 苏州普纳斯电子有限公司 | Preparation method of acid fogging inhibitor |
| CN104805447A (en) * | 2015-05-07 | 2015-07-29 | 苏州普纳斯电子有限公司 | Preparation method of acid fogging inhibitor |
| CN105297029A (en) * | 2015-11-20 | 2016-02-03 | 中国海洋石油总公司 | Crude oil decalcifying agent matched corrosion inhibitor and preparation method thereof |
| CN105297029B (en) * | 2015-11-20 | 2017-10-13 | 中国海洋石油总公司 | A kind of supporting corrosion inhibiter of crude oil decalcifying agent and preparation method thereof |
| CN107502882A (en) * | 2017-08-03 | 2017-12-22 | 苏州吉利不锈钢制品有限公司 | A kind of stainless steel Low corrison liquid and preparation method thereof |
| CN107418547A (en) * | 2017-08-29 | 2017-12-01 | 中国石油集团渤海钻探工程有限公司 | One kind is based on the high-temperature acidification corrosion inhibitor of tribenzyl (2 benzyl) pyridine ammonium chloride |
| CN107523287A (en) * | 2017-08-29 | 2017-12-29 | 中国石油集团渤海钻探工程有限公司 | A kind of combined high temperature acidification corrosion inhibitor based on pyridines quaternary ammonium salt |
| CN110049637A (en) * | 2019-05-22 | 2019-07-23 | 昆山欧贝达电子科技有限公司 | The brownification treatment process of PCB substrate |
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| Publication number | Publication date |
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| CN100491595C (en) | 2009-05-27 |
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Assignee: Hubei Longsky Communication Technology Co., Ltd. Assignor: Chongqing University Contract record no.: 2010420000098 Denomination of invention: Acid pickling inhibitor and preparation method thereof Granted publication date: 20090527 License type: Exclusive License Open date: 20070912 Record date: 20100719 |
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