CN1854085A - Scale-proofing method of boiler - Google Patents
Scale-proofing method of boiler Download PDFInfo
- Publication number
- CN1854085A CN1854085A CN 200510025383 CN200510025383A CN1854085A CN 1854085 A CN1854085 A CN 1854085A CN 200510025383 CN200510025383 CN 200510025383 CN 200510025383 A CN200510025383 A CN 200510025383A CN 1854085 A CN1854085 A CN 1854085A
- Authority
- CN
- China
- Prior art keywords
- boiler
- scale
- inhibition method
- water
- boiler scale
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 7
- SBMSLRMNBSMKQC-UHFFFAOYSA-N pyrrolidin-1-amine Chemical compound NN1CCCC1 SBMSLRMNBSMKQC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000006392 deoxygenation reaction Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 235000019600 saltiness Nutrition 0.000 claims description 3
- 229940045641 monobasic sodium phosphate Drugs 0.000 claims description 2
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 2
- 239000003814 drug Substances 0.000 abstract description 4
- 239000002455 scale inhibitor Substances 0.000 abstract description 2
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 235000010265 sodium sulphite Nutrition 0.000 abstract 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 abstract 1
- 230000005764 inhibitory process Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000011575 calcium Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 125000004417 unsaturated alkyl group Chemical group 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Physical Water Treatments (AREA)
Abstract
A boiler scale-inhibiting method is carried out by inspecting, feeding medicine and monitoring. Scale inhibitor consists of 1-amino-pyrrolidine, monometallic sodium orthophosphate, sodium sulfite and ethylenimine. It is fast and efficient.
Description
Technical field
The invention belongs to chemical industry and environmental protection field, relate to a kind of water treatment method, further, the present invention relates to a kind of method of scale inhibition of boiler.
Background technology
In feedwater, contain a large amount of undissolved solids, mainly form, form fouling by Ca (calcium), Mg (magnesium), can influence heat passage, cause the boiler body temperature raise up to overheated, distortion is soft, bubble and produce the crack.
And boiler also can be concentrated reasons such as burn into acid corrosion, electrolyte corrosion, prolong corrosion because of dissolved oxygen, chlorine, produces rusty scale, pipe perforation, pipeline breaking, attenuation etc.Therefore, need regularly carry out boiler water processing, thereby reduce power loss or fuel consumption, prolonged boiler life-span, guarantee best heat transfer, reduce unnecessary blowing out or maintenance, minimizing pickling frequency and expense.
In the scale inhibition de-sludging technology of boiler, Scale inhibitors commonly used includes the multipolymer of organic phosphonates, phosphoric acid ester, polyphosphoric acid, unsaturated carboxylic acid and various vinyl monomer (unsaturated alkyl and hydroxy alkyl ester, vinyl acetate between to for plastic etc.) etc.Though these Scale inhibitorss can solve the scale problems of Treatment of Industrial Water to a certain extent, but still have a lot of defectives, performance is unsatisfactory etc.Therefore, inventor's combination practical experience has for many years been attempted the combination of various medicaments, has found a kind of boiler scale-inhibition method of grinding medicament certainly based on the inventor, adopts this method can carry out the scale inhibition of boiler fast and efficiently.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of boiler scale-inhibition method, comprises following steps:
(1) extracts a small amount of feedwater at the dosing mouth place of boiler, detect every index of water, calculate the concentration of the water treatment scale agent that must add then;
(2) with the deoxygenation mouth of boiler or softened water tank exit end as dosing mouth, add water-treating antisludging agent of boiler, it mainly contains 1-amino-pyrrolidine, SODIUM PHOSPHATE, MONOBASIC, S-WAT, hexahydroaniline;
(3) the effect situation of monitoring water treatment scale agent.
Further, in boiler scale-inhibition method of the present invention, every index of described water comprises the pH value of water, hardness, dissolved oxygen, saltiness, iron-holder, oleaginousness etc., determines to add dose and adding consistency by these indexs.
Further, in boiler scale-inhibition method of the present invention, the proportioning of described water treating agent for boilers is as follows:
1-amino-pyrrolidine 10-20%,
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 20-30%,
S-WAT 1-3%,
Hexahydroaniline 5-10%,
Surplus is a deionized water.
Further, in boiler scale-inhibition method of the present invention, the temperature that described boiler scale-inhibition method is suitable for is 20-50 ℃.More particularly, described boiler scale-inhibition method can be carried out being higher than under 20 ℃ the normal temperature, does not need special heat treated.
Further, in boiler scale-inhibition method of the present invention, the pH that described boiler scale-inhibition method is suitable for is 5-8.
Adopt boiler scale-inhibition method of the present invention, can be hard at height, high-alkali, under high ferro, high pH, high temperature and the oil-containing condition, control fouling effectively, and, the method of this law can also be used in combination with additive method and other treatment agents, reaches easy, multi-purpose purpose.
Embodiment
Boiler scale-inhibition method of the present invention also can be carried out at normal temperatures, in the present embodiment, selects 25 ℃ temperature, if suitably heat, can reach effect more efficiently.
At first, extract a small amount of feedwater at the dosing mouth place of boiler, indexs such as the pH value of detection water, hardness, dissolved oxygen, saltiness, iron-holder, oleaginousness according to the gained data, are calculated the concentration of the water treatment scale agent that must add;
Then, as dosing mouth, add water-treating antisludging agent of boiler with the deoxygenation mouth of boiler or softened water tank exit end, it mainly contains 1-amino-pyrrolidine 10-20%, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 20-30%, S-WAT 1-3%, hexahydroaniline 5-10%, surplus is a deionized water.
Monitor the effect situation of water treatment scale agent at last.According to action effect, can regulate, such as carrying out adding of medicament, or suitably attemperation and pH value.
Claims (6)
1. a boiler scale-inhibition method is characterized in that, comprises following steps:
(1) extracts a small amount of feedwater at the dosing mouth place of boiler, detect every index of water, calculate the concentration of the water treatment scale agent that must add then;
(2) with the deoxygenation mouth of boiler or softened water tank exit end as dosing mouth, add water-treating antisludging agent of boiler, it mainly contains 1-amino-pyrrolidine, SODIUM PHOSPHATE, MONOBASIC, S-WAT, hexahydroaniline;
(3) the effect situation of monitoring water treatment scale agent.
2. boiler scale-inhibition method according to claim 1 is characterized in that, every index of described water comprises the pH value of water, hardness, dissolved oxygen, saltiness, iron-holder, oleaginousness etc.
3. boiler scale-inhibition method according to claim 1 is characterized in that, the proportioning of described water treating agent for boilers is as follows:
1-amino-pyrrolidine 10-20%,
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 20-30%,
S-WAT 1-3%,
Hexahydroaniline 5-10%,
Surplus is a deionized water.
4. boiler scale-inhibition method according to claim 1 is characterized in that, the temperature that described boiler scale-inhibition method is suitable for is 20-50 ℃.
5. boiler scale-inhibition method according to claim 4 is characterized in that, described boiler scale-inhibition method is carried out being higher than under 20 ℃ the normal temperature.
6. boiler scale-inhibition method according to claim 1 is characterized in that, the pH that described boiler scale-inhibition method is suitable for is 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510025383 CN1854085A (en) | 2005-04-25 | 2005-04-25 | Scale-proofing method of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510025383 CN1854085A (en) | 2005-04-25 | 2005-04-25 | Scale-proofing method of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1854085A true CN1854085A (en) | 2006-11-01 |
Family
ID=37194592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510025383 Pending CN1854085A (en) | 2005-04-25 | 2005-04-25 | Scale-proofing method of boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1854085A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948188A (en) * | 2010-09-13 | 2011-01-19 | 上海电力学院 | Environmentally-friendly water treatment method of scale inhibition and corrosion inhibition of industrial boiler |
| CN101962243A (en) * | 2010-09-13 | 2011-02-02 | 上海电力学院 | Industrial boiler water treatment method |
| CN107555620A (en) * | 2017-08-16 | 2018-01-09 | 鞍钢贝克吉利尼水处理有限公司 | It is a kind of applied to the low-phosphorous environment-friendly corrosion-mitigation scale-inhibition medicament of boiler and preparation, application method |
| CN109607835A (en) * | 2019-02-14 | 2019-04-12 | 上海久安水质稳定剂厂 | On-line high-efficiency scaling and descaling agent for steelmaking converter waste heat boilers |
| CN114873746A (en) * | 2022-04-09 | 2022-08-09 | 扬州红耀锅炉有限公司 | Scale inhibition method for boiler |
-
2005
- 2005-04-25 CN CN 200510025383 patent/CN1854085A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948188A (en) * | 2010-09-13 | 2011-01-19 | 上海电力学院 | Environmentally-friendly water treatment method of scale inhibition and corrosion inhibition of industrial boiler |
| CN101962243A (en) * | 2010-09-13 | 2011-02-02 | 上海电力学院 | Industrial boiler water treatment method |
| CN107555620A (en) * | 2017-08-16 | 2018-01-09 | 鞍钢贝克吉利尼水处理有限公司 | It is a kind of applied to the low-phosphorous environment-friendly corrosion-mitigation scale-inhibition medicament of boiler and preparation, application method |
| CN107555620B (en) * | 2017-08-16 | 2020-10-16 | 鞍钢贝克吉利尼水处理有限公司 | Low-phosphorus environment-friendly corrosion and scale inhibitor applied to boiler and preparation and use methods thereof |
| CN109607835A (en) * | 2019-02-14 | 2019-04-12 | 上海久安水质稳定剂厂 | On-line high-efficiency scaling and descaling agent for steelmaking converter waste heat boilers |
| CN114873746A (en) * | 2022-04-09 | 2022-08-09 | 扬州红耀锅炉有限公司 | Scale inhibition method for boiler |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |