CN1607189A - Industrial boiler heat delivery surface dirty-proof method - Google Patents
Industrial boiler heat delivery surface dirty-proof method Download PDFInfo
- Publication number
- CN1607189A CN1607189A CN 200310100363 CN200310100363A CN1607189A CN 1607189 A CN1607189 A CN 1607189A CN 200310100363 CN200310100363 CN 200310100363 CN 200310100363 A CN200310100363 A CN 200310100363A CN 1607189 A CN1607189 A CN 1607189A
- Authority
- CN
- China
- Prior art keywords
- water
- boiler
- poly
- scale
- succinic acid
- 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.)
- Granted
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
A descaling method for heat conductive surface of industrial boiler is characteristic of using polyepoxy amber acid as descaling agent. The relative molecular mass is 400-1000, the range of used quantity in boiler is 2-100 mg/L. Said invention can be used in following condition, normal pressure- 2.45 MPa of boiler pressure, 250 mg of fed water hardness, 250 mg/L basicity of normal running water, 10-12 pH value of boiler water, less than 4000 mg/L total solved solids of standard water quality, even can be used in 15000 mg/L total solved solids ultraconcentrated water, adapted to normal water and high hard water quality having phosphorus free, non nitrogen, easily biodegrading and without environment pollution.
Description
Technical field
The present invention relates to boiler heat-transfer face method of scale inhibition, be a kind of be the method for scale inhibition of Scale inhibitors with poly-epoxy succinic acid (PESA), be mainly used in the scale inhibition of Industrial Boiler.
Background technology
Boiler is to be the heat power equipment of working medium with water.Contain more detrimental impurity in the natural water, if the not treated boiler that just enters, the impurity in the water can form incrustation scale or grain slag in boiler.The thermal conductivity of the thermal conductivity ratio iron and steel of incrustation scale is little tens of times to hundreds of times, and it generates the capacity of heat transmission that can influence boiler greatly, will cause that boiler tube is crossed cause thermal damage, waste of fuel, reductions of exerting oneself, consumption chemical cleaning medicament, shortening boiler work-ing life etc.Therefore, the water treatment of boiler is very important.
To low pressure boiler, generally the method for scale inhibition of Cai Yonging is softening-Scale inhibitors method and Scale inhibitors method.Adopt at present the Scale inhibitors kind mainly contain phosphoric acid salt, poly-phosphate, organic multicomponent phosphonic acids, polyacrylic acid, styrene sulfonic acid and maleic acid etc.These Scale inhibitorss have scale effect preferably, but can cause environmental problem, thereby its discharging begun to be restricted, and development environment close friend's Scale inhibitors is imperative.
The green scale inhibitor of having found so far only has two kinds of poly-epoxy succinic acid (PESA) and poly aspartic acids.Wherein, PESA is a kind of water-soluble polymers with powerful chelating and scale inhibition performance, and not phosphorous in its molecular structure, nitrogen element can not cause body eutrophication, and biodegradable is good, is a kind of green polymer.
[US 5 for United States Patent (USP) " Methods of controlling scale formation inaqueous systems ", 062,962 (1991)] find, poly-epoxy succinic acid has threshold effect, it is a kind of Scale inhibitors of excellent performance, calcium ion there is very high tolerance, is applicable to the industrial cooling circulating water system of high-alkali high solid water matter.[US 5 for United States Patent (USP) " Methods ofcontrolling scale formation in aqueous systems ", 147,555 (1992)] find, poly-epoxy succinic acid is effective especially to high pH value, high calcium and high-alkali water quality, industrial colling is carried out under very high cycles of concentration, lime carbonate, caoxalate, calcium sulfate and barium sulfate are all had good scale inhibition effect.[US 5 for United States Patent (USP) " Method of inhibitingcorrosion in aqueous systems ", 256,332 (1993)] provide a kind of low-phosphorous prescription of forming by phosphoric acid salt, azole compounds, poly-epoxy succinic acid and acrylic copolymer, can reduce the pollution of phosphorus series compound environment.[US 5 for United States Patent (USP) " Methods ofcontrolling scale formation in aqueous systems ", 248,438 (BetzDearborn Inc., 1993)] and United States Patent (USP) " Compositions forcontrolling scale formation in aqueous system " [US5,342,540 (1994)] provide Xiang Shuizhong to add the method for scale inhibition of poly-epoxy succinic acid, acrylic copolymer and lanthanide ion, lanthanide ion has stoped the interaction of poly-epoxy succinic acid and acrylic copolymer effectively.United States Patent (USP) " Method of inhibiting reservoir scale " [US5,409,062 (1995)] provides a kind of generation and sedimentary method that prevents dirt of calcium in the underground water and barium dirt when oil production with PESA.United States Patent (USP) " Calcium carbonatescale controlling method " [US5,562,830 (1996)] has been invented a kind of method that poly-epoxy succinic acid and phosphine carboxylic acid come scale inhibition and inhibition that adds in water.[US 5 for United States Patent (USP) " Methodof controlling fluoride scale formation in aqueous systems ", 705,077 (1998)] provides a kind of method of scale inhibition that prevents to fluoridize dirt with PESA, to fluoridizing dirt excellent scale-inhibiting properties has been arranged at shower cooling water system (as the casting system of steel).[US 5 for United States Patent (USP) " Method of controlling scale formation in brineconcentration and evaporation system ", 866,011 (1999,2,2)] provide a kind of and prevented that with PESA salt from concentrating and the method for scale inhibition of vapo(u)rization system fouling.
Yet, the operational conditions of boiler, as: pressure, temperature condition condition harshness more than above-mentioned patent, condition of water quality also than above-mentioned patent condition harshness many, whether this green polymer of poly-epoxy succinic acid can effectively prevent the fouling of boiler heat-transfer face under high pressure, high temperature and the high basicity of boiler, still do not have bibliographical information so far.
Summary of the invention
The purpose of this invention is to provide a kind of eco-friendly boiler heat-transfer face method of scale inhibition, this method be a kind of be the boiler heat-transfer face method of scale inhibition of Scale inhibitors with green polymer poly-epoxy succinic acid (PESA).Owing to used the Scale inhibitors efficiently of without phosphorus, non-nitrogen and readily biodegradable, be applicable to Industrial Boiler heat-transfer surface scale inhibition.
A kind of Industrial Boiler heat-transfer surface of the present invention method of scale inhibition is to be Scale inhibitors with the poly-epoxy succinic acid, and the relative molecular mass of poly-epoxy succinic acid is 400～1000, and poly-epoxy succinic acid joins amount ranges in the boiler systems at 2mg/L～100mg/L.
The present invention is preferably in 5mg/L～50mg/L with the amount ranges that poly-epoxy succinic acid joins in the boiler systems.
It is normal pressure～2.45MPa that method of the present invention can be used for the boiler pressure scope.
Method of the present invention can be 10～12 in pot water pH value, uses under the standard water quality of total dissolved solid≤4000mg/L.
Method of the present invention even be hardness 250mg/L in oiler feed, the ordinary tap water of basicity 250mg/L, a pot water pH value is 10～12, always dissolved solid is also can use under the hyperconcentration water quality of 15000mg/L.
Method of the present invention is applicable to that oiler feed is ortho-water, high hardness or high buck water quality.
The present invention used poly-epoxy succinic acid can adopt commercially available industrial goods, its relative molecular mass is 400～1000.The amount ranges that joins the poly-epoxy succinic acid in the boiler systems is between 2mg/L～100mg/L, and best amount ranges is between 5mg/L～50mg/L.
The present invention all has the efficient scale effect to the hardness of oiler feed and basicity without limits under ortho-water, high hardness, high-alkali water condition.The present invention is 10～12 in pot water pH value to the quality of pot water also without limits, under the standard water quality of total dissolved solid≤4000mg/L, even is still having the efficient scale effect under the total hyperconcentration water quality of dissolved solid at 15000mg/L.The boiler pressure scope that the present invention is suitable for is normal pressure～2.45MPa.
The method of scale inhibition that the present invention proposes is strong to the adaptability of temperature, pressure, water quality, scale inhibition performance to the boiler heat-transfer face can reach 100%, have without phosphorus, non-nitrogen, readily biodegradable and characteristics such as free from environmental pollution simultaneously, thereby be a kind of eco-friendly boiler heat-transfer face method of scale inhibition.
Embodiment
Embodiment 1: be relative molecular mass that to add operating pressure by the 20g/t amount with feedwater be in the operation steam boiler system of 1.27MPa for 400～1000 PESA.Oiler feed is hardness 250mg/L, the ordinary tap water of basicity 250mg/L, pot water pH value is 10～12, total dissolved solid≤4000mg/L, after operation in 4 months, check that the boiler heat-transfer face is not found fouling, the obviously attenuation of original dirt layer, part surface is clean, and the scale inhibition performance of standard 20g steel test piece is 100%.
Embodiment 2: be relative molecular mass that to add operating pressure by the 5g/t amount with feedwater be in the operation steam boiler system of 1.27MPa for 400～1000 PESA.Oiler feed is hardness 250mg/L, the ordinary tap water of basicity 250mg/L, pot water pH value is 10～12, total dissolved solid≤4000mg/L, after operation in 4 months, check that the boiler heat-transfer face is not found fouling, the obviously attenuation of original dirt layer, part surface is clean, and the scale inhibition performance of standard 20g steel test piece is 98%.
Embodiment 3: be relative molecular mass that to add operating pressure by the 50g/t amount with feedwater be in the operation steam boiler system of 1.27MPa for 400～1000 PESA.Oiler feed is hardness 250mg/L, the ordinary tap water of basicity 250mg/L, pot water pH value is 10～12, total dissolved solid≤4000mg/L, after operation in 4 months, check that the boiler heat-transfer face is not found fouling, the obviously attenuation of original dirt layer, part surface is clean, and the scale inhibition performance of standard 20g steel test piece is 100%.
Embodiment 4: be relative molecular mass that to add operating pressure by the 20g/t amount with feedwater be in the non-pressurized operation steam boiler system for 400～1000 PESA.Oiler feed is hardness 250mg/L, the ordinary tap water of basicity 250mg/L, pot water pH value is 10～12, total dissolved solid≤4000mg/L, after operation in 4 months, check that the boiler heat-transfer face is not found fouling, the obviously attenuation of original dirt layer, part surface is clean, and the scale inhibition performance of standard 20g steel test piece is 100%.
Embodiment 5: be relative molecular mass that to add operating pressure by the 20g/t amount with feedwater be in the operation steam boiler system of 0.69MPa for 400～1000 PESA.Oiler feed is hardness 250mg/L, the ordinary tap water of basicity 250mg/L, pot water pH value is 10～12, total dissolved solid≤4000mg/L, after operation in 4 months, check that the boiler heat-transfer face is not found fouling, the obviously attenuation of original dirt layer, part surface is clean, and the scale inhibition performance of standard 20g steel test piece is 100%.
Embodiment 6: be relative molecular mass that to add operating pressure by the 20g/t amount with feedwater be in the operation steam boiler system of 1.27MPa for 400～1000 PESA.Oiler feed is hardness 1000mg/L, the high gravity die tap water of basicity 250mg/L, pot water pH value is 10～12, total dissolved solid≤4000mg/L, after operation in 4 months, check that the boiler heat-transfer face is not found fouling, the obviously attenuation of original dirt layer, part surface is clean, and the scale inhibition performance of standard 20g steel test piece is 100%.
Embodiment 7: be relative molecular mass that to add operating pressure by the 20g/t amount with feedwater be in the operation steam boiler system of 1.27MPa for 400～1000 PESA.Oiler feed is hardness 250mg/L, the high-alkali type tap water of basicity 1000mg/L, pot water pH value is 10～12, total dissolved solid≤4000mg/L, after operation in 4 months, check that the boiler heat-transfer face is not found fouling, the obviously attenuation of original dirt layer, part surface is clean, and the scale inhibition performance of standard 20g steel test piece is 100%.
Embodiment 8: be relative molecular mass that to add operating pressure by the 20g/t amount with feedwater be in the operation steam boiler system of 1.27MPa for 400～1000 PESA.Oiler feed is hardness 250mg/L, the ordinary tap water of basicity 250mg/L, and pot water pH value is 10～12, total dissolved solid is the test water quality of 15000mg/L, check that after test run in 1 month the boiler heat-transfer face is not found fouling, the scale inhibition performance of standard 20g steel test piece is 100%.
Embodiment 9: be relative molecular mass that to add operating pressure by the 20g/t amount with feedwater be in the operation steam boiler system of 2.45MPa for 400～1000 PESA.Oiler feed is hardness 250mg/L, the ordinary tap water of basicity 250mg/L, pot water pH value is 10～12, total dissolved solid≤4000mg/L, after operation in 4 months, check that the boiler heat-transfer face is not found fouling, the obviously attenuation of original dirt layer, part surface is clean, and the scale inhibition performance of standard 20g steel test piece is 100%.
Embodiment 10: be relative molecular mass that to add operating pressure by the 2g/t amount with feedwater be in the operation steam boiler system of 1.27MPa for 400～1000 PESA.Oiler feed is hardness 250mg/L, the ordinary tap water of basicity 250mg/L, and pot water pH value is 10～12, and total dissolved solid≤4000mg/L checks that the boiler heat-transfer face is not found fouling after operation in 4 months, and the scale inhibition performance of standard 20g steel test piece is 93%.
Embodiment 11: be relative molecular mass that to add operating pressure by the 100g/t amount with feedwater be in the operation steam boiler system of 1.27MPa for 400～1000 PESA.Oiler feed is hardness 250mg/L, the ordinary tap water of basicity 250mg/L, pot water pH value is 10～12, total dissolved solid≤4000mg/L, after operation in 4 months, check that the boiler heat-transfer face is not found fouling, the obviously attenuation of original dirt layer, part surface is clean, and the scale inhibition performance of standard 20g steel test piece is 100%.
Claims (6)
1, a kind of Industrial Boiler heat-transfer surface method of scale inhibition is a Scale inhibitors with the poly-epoxy succinic acid, and the relative molecular mass of poly-epoxy succinic acid is 400～1000, and poly-epoxy succinic acid joins amount ranges in the boiler systems at 2mg/L～100mg/L.
2, method according to claim 1 is characterized in that: poly-epoxy succinic acid joins amount ranges in the boiler systems at 5mg/L～50mg/L.
3, method according to claim 1 is characterized in that: the boiler pressure scope is normal pressure～2.45MPa.
4, method according to claim 1 is characterized in that: in pot water pH value is 10～12, uses under the standard water quality of total dissolved solid≤4000mg/L.
5, method according to claim 1 is characterized in that: oiler feed is hardness 250mg/L, the ordinary tap water of basicity 250mg/L, and pot water pH value is 10～12, uses under the water quality that total dissolved solid is 15000mg/L.
6, method according to claim 1 is characterized in that: oiler feed is ortho-water, high hardness or high buck water quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310100363 CN1239410C (en) | 2003-10-14 | 2003-10-14 | Industrial boiler heat delivery surface dirty-proof method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310100363 CN1239410C (en) | 2003-10-14 | 2003-10-14 | Industrial boiler heat delivery surface dirty-proof method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1607189A true CN1607189A (en) | 2005-04-20 |
| CN1239410C CN1239410C (en) | 2006-02-01 |
Family
ID=34755929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310100363 Expired - Fee Related CN1239410C (en) | 2003-10-14 | 2003-10-14 | Industrial boiler heat delivery surface dirty-proof method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1239410C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186883A (en) * | 2013-11-19 | 2019-08-30 | 凯米罗总公司 | For analyzing the method comprising at least sample of the first and second antisludging agents |
-
2003
- 2003-10-14 CN CN 200310100363 patent/CN1239410C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186883A (en) * | 2013-11-19 | 2019-08-30 | 凯米罗总公司 | For analyzing the method comprising at least sample of the first and second antisludging agents |
| CN110186883B (en) * | 2013-11-19 | 2021-11-12 | 凯米罗总公司 | Method for analysing a sample comprising at least a first and a second scale inhibitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1239410C (en) | 2006-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7252769B2 (en) | Use of cerium salts to inhibit manganese deposition in water systems | |
| CN1166576C (en) | Scale and/or corrosion inhibiting composition | |
| CN102351328B (en) | Green total organic carbon steel scale and corrosion inhibitor for circulating cooling water system | |
| US5000856A (en) | Method for controlling scale deposition in aqueous systems using allyl sulfonate/maleic anhydride polymers | |
| CN1289411C (en) | Environment-friendly water quality stabilizer | |
| US5124046A (en) | Method for controlling calcium carbonate scaling in high pH aqueous systems | |
| FR2556335A1 (en) | COMPOSITION AND METHOD FOR INHIBITING TARTAR FORMATION | |
| CN105036358A (en) | Scale inhibitor for ash flushing water pipe and preparation method of scale inhibitor | |
| AU2009256411B2 (en) | Method for inhibiting the formation and deposition of silica scale in aqueous systems | |
| WO2018040097A1 (en) | Composition and method for controlling, preventing and/or reducing formation of inorganic scale, and use of composition | |
| CN1239410C (en) | Industrial boiler heat delivery surface dirty-proof method | |
| CN1254443C (en) | Scale and corrosion inhibiting method for industrial boiler | |
| CN1239409C (en) | Tracing water quality stabilizer | |
| Meier et al. | Cooling water systems: An overview | |
| NZ225541A (en) | Inhibition of caco 3 scaling using a polymer/phosphonate mixture | |
| GB2137185A (en) | Composition and Method for Inhibiting Scale | |
| CN102452723A (en) | Preparation method of non-phosphorus composite scale inhibitor | |
| Nicolas et al. | Inhibitory Activity of Biopolymers, Synthetic Polymers, and Phosphonates against the Formation of Calcium Phosphate Scale in Cooling Water Systems | |
| Amjad et al. | Comparative Performance of Natural, Hybrid, and Synthetic Polymers Containing Different Functional Groups as Strontium Sulfate Scale Inhibitors | |
| JP2009299161A (en) | Metal corrosion suppression method of water system | |
| Amjad et al. | Inhibition of Calcium Phosphate Precipitation by Polymers in the Presence of Iron (III). The Influence of Chelating Agents | |
| Amjad | Controlling metal ion fouling in industrial water systems | |
| Amjad et al. | INHIBITION OF CALCIUM PHOSPHATE PRECIPITATION BY POLYMERSINTHEPRESENCE OFIRON (III). THE INFLUENCE OF CHELATING AGENTS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |