CN102531203B - Corrosion inhibitor for boiler acid washing and production method thereof - Google Patents
Corrosion inhibitor for boiler acid washing and production method thereof Download PDFInfo
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- CN102531203B CN102531203B CN 201210024719 CN201210024719A CN102531203B CN 102531203 B CN102531203 B CN 102531203B CN 201210024719 CN201210024719 CN 201210024719 CN 201210024719 A CN201210024719 A CN 201210024719A CN 102531203 B CN102531203 B CN 102531203B
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Abstract
The invention discloses a corrosion inhibitor for boiler acid washing and a production method thereof, wherein the corrosion inhibitor for boiler acid washing consists of the following components according to mass percent: 3-6% of citric acid, 5-10% of N, N-double-phosphine acyl methyl aspartic acid, 0.5-1.5% of dodecyl betaine, 0.1-0.3% of thiourea, 0.5-2.5% of methylene phosphonic acid, 0.5-2.5% of 2-phosphonate-1, 2, 4-tricarboxylic acid butane, 0.5-1.5% of tdlyltriazole, 0.5-1.5% of N-alkylamino-2-perfluoroalkyl imidazoline quaternary ammonium salt, 0.5-1.5% of sodium alginate, 1-3% of sodium chromate, 0.5-1.5% of zinc chloride and the balance of water. The corrosion inhibitor for boiler acid washing has a good corrosion inhibition effect and good applicability, the static corrosion speed is lower than 0.2g/m<2> h, a test block is bright after the cleaning, harmful film is not left, and the dirty dissolving capability is strong.
Description
Technical field
The present invention relates to a kind of inhibiter and preparation method thereof, relate in particular to a kind of boiler acid pickling inhibiter and preparation method thereof.
Background technology
Human development and progress is take natural resources and human environment of depending on for existence as the basis.China's Freshwater resources are abundanter, occupy the 5th in the world.But per capita resources occupies the 18 in the world.Therefore water resources is not rich.Along with growth and the economic fast development of China's population, limited water resources is shorter.The water resource pollution of China also is very serious.From national situation, urban water shortage is serious at present, has caused serious financial loss and social and environmental problems.The lack of water city distributes and is spread to the whole nation gradually by North China, northeast, the Northwest and the coastal eastern region of concentrating at present.
Therefore water saving, improvement sewage and mining new source of water have the effect of no less important.The most important thing is process water in the town water.The consumption of water coolant ranks first in the process water.Therefore saving water coolant becomes primary target.The main method of saving water coolant is to take recirculated cooling water and improve cycles of concentration.But the harmful ion composition behind the employing recirculated cooling water in the water increases, and brings again a large amount of dissolved oxygens, dust and bacterium from cooling tower into, and water quality is degenerated, so that brings the problems such as corrosion and scaling, bacterium algae and foundry loam to cooling water system.Greatly developing Water Treatment Chemicals plays an important role to water saving, improvement sewage.Water conditioner be in process water, domestic water, the wastewater treatment process the chemical agent that must use.Use through these chemical agents makes water reach certain specification of quality.The Main Function of water conditioner is the formation of control incrustation scale, mud, reduces foam, reduces the corrosion of the material that contact with water, and except suspended solids and the toxic substance in anhydrating, deodorization and discoloration softens with stabilizing water quality etc.Therefore, water conditioner can be divided into the main medicament of four classes.Be inhibiter, Scale inhibitors, sterilant and flocculation agent.China's water conditioner just draws attention after introducing large scale fertilizer plant the seventies and progressively grows up.After this developed a series of water conditioner.
In recent years, the boiler acid pickling inhibiter is a kind of special corrosion agent of being badly in need of in the present Boiler Chemical.Yet existing boiler acid pickling is stable not with the inhibiter performance, and the quality guaranteed period is short, and has than the strong and stimulating smell.
Summary of the invention
In order to solve the prior art above shortcomings, one of technical problem to be solved by this invention provides a kind of boiler acid pickling inhibiter.
Two of technical problem to be solved by this invention provides the preparation method that above-mentioned boiler acid pickling is used inhibiter.
Technical scheme of the present invention is achieved in that
A kind of boiler acid pickling inhibiter is made of by mass percentage following component:
Citric acid 3-6%;
N, the two (phosphonomethyl) aspartic acid 5-10% of N-;
Empgen BB 0.5-1.5%;
Thiocarbamide 0.1-0.3%;
Diethylene triamine pentamethylene phosphonic 0.5-2.5%;
2-phosphonate group-1,2,4-butane tricarboxylate 0.5-2.5%;
Tolyltriazole 0.5-1.5%;
N-alkylamino-2-perfluoroalkylimidazquaternary quaternary ammonium salt 0.5-1.5%;
Sodium alginate 0.5-1.5%;
Sodium chromate 1-3%;
Zinc chloride 0.5-1.5%;
Surplus is water.
The present invention also provides the preparation method of above-mentioned boiler acid pickling with inhibiter; heat water to 40-60 ℃; empgen BB is dissolved in the water; again with thiocarbamide, diethylene triamine pentamethylene phosphonic, 2-phosphonate group-1; 2; 4-butane tricarboxylate, tolyltriazole, N-alkylamino-2-perfluoroalkylimidazquaternary quaternary ammonium salt, sodium alginate, Sodium chromate and zinc chloride add stirring; add at last citric acid and N; the two (phosphonomethyl) aspartic acids of N-; mix, can make boiler acid pickling inhibiter of the present invention.
Boiler acid pickling of the present invention is with the using method of inhibiter, can for:
Connect the cleaning boiler system, the debugging feedwater is depressed into the boiler water filling that meets the requirements to the drum low-water level, and isolation and cleaning system without interaction are warming up to about 80 ℃, add boiler acid pickling inhibiter of the present invention, keep circulating under this temperature, and the time is controlled at 2-4 hour.
With respect to prior art, beneficial effect of the present invention is embodied as:
(1) the used most polymer raw materials of the present invention are the biodegradable product, belong to environmental friendly product, and stable chemical nature, toxicity are low.
(2) corrosion mitigating effect and suitability are good, add can play corrosion inhibition on a small quantity, and static corrosion speed is lower than 0.2 gram/rice
2Hour, can't produce the needle-like spot corrosion or enlarge and deepen original corrosion spot; Test piece light after cleaning, residual harmful film not is without obvious copper facing phenomenon; Molten dirty ability is strong, can be in 85 ℃ fast decoupled, rotten, anti-long-term storage; Waste liquid is ordorless, and toxicity is low, meets emission standard.
(3) applicable steel comprise common boiler steel, soft steel, steel alloy, drum steel such as 20A, 20g, SA299, BHW35, BHW38 etc., the simultaneously also applicable pickling of red copper in hydrochloric acid and citric acid.
Embodiment
Embodiment 1
Raw material is prepared:
Take by weighing 100 kilograms of raw materials, wherein:
3 kilograms of citric acids;
N, 10 kilograms of the two (phosphonomethyl) aspartic acids of N-;
0.5 kilogram of empgen BB;
0.3 kilogram of thiocarbamide;
0.5 kilogram of diethylene triamine pentamethylene phosphonic;
2-phosphonate group-1,2,2.5 kilograms of 4-butane tricarboxylates;
0.5 kilogram of tolyltriazole;
1.5 kilograms of N-alkylamino-2-perfluoroalkylimidazquaternary quaternary ammonium salts;
0.5 kilogram of sodium alginate;
3 kilograms of Sodium chromates;
0.5 kilogram of zinc chloride.
Surplus is water.
Be water and dialkyl group trimethyl-glycine, thiocarbamide, diethylene triamine pentamethylene phosphonic, 2-phosphonate group-1; 2; 4-butane tricarboxylate, tolyltriazole, N-alkylamino-2-perfluoroalkylimidazquaternary quaternary ammonium salt, sodium alginate, Sodium chromate, zinc chloride, citric acid and N, the gross weight of the two (phosphonomethyl) aspartic acids of N-is 100 kilograms.
Heat water to 40-60 ℃; empgen BB is dissolved in the water; again with thiocarbamide, diethylene triamine pentamethylene phosphonic, 2-phosphonate group-1; 2; 4-butane tricarboxylate, tolyltriazole, N-alkylamino-2-perfluoroalkylimidazquaternary quaternary ammonium salt, sodium alginate, Sodium chromate and zinc chloride add stirring, add at last citric acid and N, the two (phosphonomethyl) aspartic acids of N-; mix, can make boiler acid pickling inhibiter of the present invention.
Boiler acid pickling of the present invention is with the using method of inhibiter, can for:
Connect the cleaning boiler system, the debugging feedwater is depressed into the boiler water filling that meets the requirements to the drum low-water level, and isolation and cleaning system without interaction are warming up to about 80 ℃, add boiler acid pickling inhibiter of the present invention, keep circulating under this temperature, and the time is controlled at 2-4 hour.
After tested, static corrosion speed 0.18 gram/rice in the boiler steel
2Hour, can't produce the needle-like spot corrosion or enlarge and deepen original corrosion spot; Test piece light after cleaning, residual harmful film not is without obvious copper facing phenomenon; Molten dirty ability is strong, can be in 85 ℃ fast decoupled, rotten, anti-long-term storage; Waste liquid is ordorless, and toxicity is low, meets emission standard.
Carried out the static-state scale inhibition test according to State Standard of the People's Republic of China GB/T16632-2008 " the mensuration tosca method of water treatment scale performance ".
Test result: static-state scale inhibition test resistance calcium carbonate rate 96.5%.
Embodiment 2
Raw material is prepared:
Take by weighing 100 kilograms of raw materials, wherein:
6 kilograms of citric acids;
N, 5 kilograms of the two (phosphonomethyl) aspartic acids of N-;
1.5 kilograms of empgen BBs;
0.1 kilogram of thiocarbamide;
2.5 kilograms of diethylene triamine pentamethylene phosphonics;
2-phosphonate group-1,2,0.5 kilogram of 4-butane tricarboxylate;
1.5 kilograms of tolyltriazole;
0.5 kilogram of N-alkylamino-2-perfluoroalkylimidazquaternary quaternary ammonium salt;
1.5 kilograms of sodium alginates;
1 kilogram of Sodium chromate;
1.5 kilograms of zinc chloride.
Surplus is water.
Be water and dialkyl group trimethyl-glycine, thiocarbamide, diethylene triamine pentamethylene phosphonic, 2-phosphonate group-1; 2; 4-butane tricarboxylate, tolyltriazole, N-alkylamino-2-perfluoroalkylimidazquaternary quaternary ammonium salt, sodium alginate, Sodium chromate, zinc chloride, citric acid and N, the gross weight of the two (phosphonomethyl) aspartic acids of N-is 100 kilograms.
Heat water to 40-60 ℃; empgen BB is dissolved in the water; again with thiocarbamide, diethylene triamine pentamethylene phosphonic, 2-phosphonate group-1; 2; 4-butane tricarboxylate, tolyltriazole, N-alkylamino-2-perfluoroalkylimidazquaternary quaternary ammonium salt, sodium alginate, Sodium chromate and zinc chloride add stirring, add at last citric acid and N, the two (phosphonomethyl) aspartic acids of N-; mix, can make boiler acid pickling inhibiter of the present invention.
Obviously, directly above-mentioned each raw material simple agitation is mixed, also can make boiler acid pickling inhibiter of the present invention.
Boiler acid pickling of the present invention is with the using method of inhibiter, can for:
Connect the cleaning boiler system, the debugging feedwater is depressed into the boiler water filling that meets the requirements to the drum low-water level, and isolation and cleaning system without interaction are warming up to about 80 ℃, add boiler acid pickling inhibiter of the present invention, keep circulating under this temperature, and the time is controlled at 2-4 hour.
After tested, static corrosion speed 0.16 gram/rice in the BHW35 drum steel
2Hour, can't produce the needle-like spot corrosion or enlarge and deepen original corrosion spot; Test piece light after cleaning, residual harmful film not is without obvious copper facing phenomenon; Molten dirty ability is strong, can be in 85 ℃ fast decoupled, rotten, anti-long-term storage; Waste liquid is ordorless, and toxicity is low, meets emission standard.
Carried out the static-state scale inhibition test according to State Standard of the People's Republic of China GB/T16632-2008 " the mensuration tosca method of water treatment scale performance ".
Test result: static-state scale inhibition test resistance calcium carbonate rate 97.2%.
Claims (2)
1. a boiler acid pickling inhibiter is characterized in that, is comprised of by mass percentage following component:
2. boiler acid pickling as claimed in claim 1 is characterized in that with the preparation method of inhibiter:
Heat water to 40-60 ℃; empgen BB is dissolved in the water; again with thiocarbamide, diethylene triamine pentamethylene phosphonic, 2-phosphonate group-1; 2; 4-butane tricarboxylate, tolyltriazole, N-alkylamino-2-perfluoroalkylimidazquaternary quaternary ammonium salt, sodium alginate, Sodium chromate and zinc chloride add stirring, add at last citric acid and N, the two (phosphonomethyl) aspartic acids of N-; mix, can make described boiler acid pickling inhibiter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201210024719 CN102531203B (en) | 2012-02-03 | 2012-02-03 | Corrosion inhibitor for boiler acid washing and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210024719 CN102531203B (en) | 2012-02-03 | 2012-02-03 | Corrosion inhibitor for boiler acid washing and production method thereof |
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| CN102531203A CN102531203A (en) | 2012-07-04 |
| CN102531203B true CN102531203B (en) | 2013-04-03 |
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| CN 201210024719 Expired - Fee Related CN102531203B (en) | 2012-02-03 | 2012-02-03 | Corrosion inhibitor for boiler acid washing and production method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103910439B (en) * | 2013-12-27 | 2016-01-06 | 新疆水处理工程技术研究中心有限公司 | A kind of anti-high chloride ion inhibiter and preparation method thereof |
| CN106245045A (en) * | 2016-07-19 | 2016-12-21 | 威海翔宇环保科技股份有限公司 | A kind of special rust remover of middle low-pressure boiler and preparation method thereof |
| CN109456857A (en) * | 2018-10-19 | 2019-03-12 | 华电电力科学研究院有限公司 | A kind of contaminant removing cleaning agent and preparation method thereof of thermal power plant's pipeline |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039232A (en) * | 1988-07-09 | 1990-01-31 | 沈阳市节能环保设备厂 | The novel compound water treating agent with silicate coating |
| CN1048416A (en) * | 1990-07-18 | 1991-01-09 | 湖北省荆门市第一化肥厂 | High-efficiency hydrochloric restrainer industrialized producing technology and device thereof |
| CN1069080A (en) * | 1991-07-30 | 1993-02-17 | 韩允志 | The compound method of pickling slow-corrosive agent for simple steel heat exchanger |
| CN101634030A (en) * | 2009-01-22 | 2010-01-27 | 湖南省湘电试验研究院有限公司 | Acid-cleaning inhibiter for cleaning boiler and use method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100949354B1 (en) * | 2003-11-26 | 2010-03-26 | 에스케이케미칼주식회사 | Method of water-treating suitable for water of high conductivity |
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2012
- 2012-02-03 CN CN 201210024719 patent/CN102531203B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039232A (en) * | 1988-07-09 | 1990-01-31 | 沈阳市节能环保设备厂 | The novel compound water treating agent with silicate coating |
| CN1048416A (en) * | 1990-07-18 | 1991-01-09 | 湖北省荆门市第一化肥厂 | High-efficiency hydrochloric restrainer industrialized producing technology and device thereof |
| CN1069080A (en) * | 1991-07-30 | 1993-02-17 | 韩允志 | The compound method of pickling slow-corrosive agent for simple steel heat exchanger |
| CN101634030A (en) * | 2009-01-22 | 2010-01-27 | 湖南省湘电试验研究院有限公司 | Acid-cleaning inhibiter for cleaning boiler and use method thereof |
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Owner name: JIANGSU CAHOM NEW ENERGY MANAGEMENT CO., LTD. Free format text: FORMER OWNER: SHANGHAI TAOHONG CHEMICAL TECHNOLOGY CO., LTD. Effective date: 20150415 |
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Inventor after: Zhang Yingwei Inventor before: Song Guoxin Inventor before: Huang Yi |
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Free format text: CORRECT: ADDRESS; FROM: 200137 PUDONG NEW AREA, SHANGHAI TO: 215505 CHANGZHOU, JIANGSU PROVINCE Free format text: CORRECT: INVENTOR; FROM: SONG GUOXIN HUANG YI TO: ZHANG YINGWEI |
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Effective date of registration: 20150415 Address after: 215505, room 333, 401 southeast Avenue, Changshu hi tech Industrial Development Zone, Changzhou, Jiangsu, Changshou City Patentee after: JIANGSU CAHOM NEW ENERGY MANAGEMENT CO., LTD. Address before: 200137 room 1F79, building, No. 528, Yang Gao Bei Road, Shanghai, Pudong New Area Patentee before: Shanghai Taohong Chemical Technology Co., Ltd. |
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