CN107244753A - The special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant - Google Patents
The special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant Download PDFInfo
- Publication number
- CN107244753A CN107244753A CN201710604060.8A CN201710604060A CN107244753A CN 107244753 A CN107244753 A CN 107244753A CN 201710604060 A CN201710604060 A CN 201710604060A CN 107244753 A CN107244753 A CN 107244753A
- Authority
- CN
- China
- Prior art keywords
- corrosion
- scale
- corrosion inhibiter
- water
- heat supply
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
- C02F5/145—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus combined with inorganic substances
Abstract
The present invention relates to a kind of special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant, belong to a kind of anti-incrustation corrosion inhibitor.The tricarboxylic acids 20mg/L of 2 phosphonic acid butane 1,2,4；The poly- tri carboxyl butane 50mg/L of 1 phosphonate group 1,2,3；Ammonium molybdate 5mg/L；Sodium isoascorbate 5mg/L；Zinc sulfate 3mg/L；Butyl glycol 100mg/L；BTA 1mg/L；Neopelex 50mg/L；Ethoxylated alkyl sulfate 20mg/L；AEO 15mg/L；Polyoxyethylene oxypropylene glycerine 1mg/L.Advantage is that the change to electrolyte in water concentration, pH is insensitive；Energy rapid, high volume capture metal ion, it is adaptable to the big water environment of high rigidity, high alkalinity, temperature change；There is copper and be applicable without copper system system；With low cost, high cost ingredients consumption is few；There is preferable cleaning performance at the more heat exchanger entrance of organic matter, glutinous mud, effectively prevent underdeposit corrosion and tube sheet corrosion, corrosion rate is far smaller than standard value；Scale inhibitor scale removal excellent effect, low-phosphorous environment-friendly.
Description
Technical field
The invention belongs to a kind of anti-incrustation corrosion inhibitor, belong to steam power plant's water treatment field.
Background technology
The northern area of China winter typically uses central heating, because the country there is no heating system water quality and heat supply network operation
Administrative standard, each heating network system is empirically managed, usually former because of water scarcity as the softened water of supplement water
Water is substituted, hence in so that heat transmission equipment and main pipeline take place frequently because of fouling corrosion phenomenon.Existing market anti-incrustation corrosion inhibitor effect on sale
Poor, cost is higher, therefore many enterprises buy anti-incrustation corrosion inhibitor in order to save cost, not also without any preservative treatment,
So as to cause corrosion accident to grow in intensity.The leakage booster thereby resulted in not only influences user normally to heat, and causes huge
Economic loss, equipment life greatly shortens, and some heat supply network main pipelines can only achieve the 1/3-1/2 of projected life.
The development experience of anti-incrustation corrosion inhibitor is from inorganic, organic copolymer, from high phosphorus, low-phosphorous to without phosphorus development course,
Use single anti-incrustation corrosion inhibitor rare in water process at present, although reason is easily to have reached ring using low-phosphorous medicament
Guaranteed request but application effect are but usually less than high phosphorus medicament, therefore composite scale corrosion inhibiter is by as technological break-through mouthful,
As water treatment agent that is the most widely studied and using.The winter heating in Jilin Province is mainly more than using nominal outlet port vapour pressure
3.8MPa station boiler, is connected by heat exchanger with heat supply network.Heating network operation water water supply water temperature is 110~150 DEG C, backwater
Water temperature is 40~70 DEG C, and water quality characteristicses are that temperature change is big, high rigidity, high alkalinity, high ph-values.No. one time webmaster faces seriously throughout the year
Corrosion and scale problems, repeatedly cause heat supply network damage and occur winter stop heating accident.
The content of the invention
The present invention provides a kind of special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant, can be applied to
In the heat supply network that 304 stainless steels, copper, the various material of carbon steel are built, asked with the fouling corrosion for solving heat supply network of multiple types
Topic.
The present invention is adopted the technical scheme that：Using water as solvent, component composition is as follows in the aqueous solution：
Organic phosphine scale inhibitor：10~30mg/L of 2- phosphonic acid butane -1,2,4- tricarboxylic acids；
The low phosphine antisludging agent of macromolecule：40~60mg/L of poly- 1- phosphonate groups -1,2,3- tri carboxyl butanes；
Carbon steel corrosion inhibitor：4~6mg/L of ammonium molybdate；
Oxygen scavenger：4~6mg/L of sodium isoascorbate；
Cathode deposition model corrosion inhibiter：1~3mg/L of zinc sulfate；
Cosolvent：100~300mg/L of butyl glycol；
The corrosion inhibiter of copper：1~3mg/L of BTA；
Anion surfactant：40~60mg/L of neopelex；
Anion surfactant：10~30mg/L of ethoxylated alkyl sulfate；
Nonionic surfactant：5~15mg/L of AEO；
Defoamer：1~3mg/L of polyoxyethylene oxypropylene glycerine.
It is preferred that：Using water as solvent, component composition is as follows in the aqueous solution：
Organic phosphine scale inhibitor：2- phosphonic acid butane -1,2,4- tricarboxylic acids 20mg/L；
The low phosphine antisludging agent of macromolecule：Poly- 1- phosphonate groups -1,2,3- tri carboxyl butanes 50mg/L；
Carbon steel corrosion inhibitor：Ammonium molybdate 5mg/L；
Oxygen scavenger：Sodium isoascorbate 5mg/L；
Cathode deposition model corrosion inhibiter：Zinc sulfate 3mg/L；
Cosolvent：Butyl glycol 100mg/L；
The corrosion inhibiter of copper：BTA 1mg/L；
Anion surfactant：Neopelex 50mg/L；
Anion surfactant：Ethoxylated alkyl sulfate 20mg/L；
Nonionic surfactant：AEO 15mg/L；
Defoamer：Polyoxyethylene oxypropylene glycerine 1mg/L.
2- phosphonic acid butanes -1,2 in the present invention, 4- tricarboxylic acids is organic phosphine scale inhibitor, poly- 1- phosphonate groups -1,2,3- tricarboxylics
Base butane is the low phosphine antisludging agent of macromolecule, and the metal ion formation chelate such as functional group and Ca, Mg, Fe, Ba reduces CaCO3
Granularity, and then crystal deposition is influenceed, prevent hard scale from generating, and fine and close molecular film formed in metal surface to prevent further corrosion
Corrosion.The compound presence of covalent bond and non-covalent bond simultaneously between small molecule and macromolecule medicament can form polynary network structure and catch
Obtaining various inorganic, organic impurities and glutinous mud prevents sedimentation.Ammonium molybdate, is carbon steel corrosion inhibitor, can form Fe-MoO4-Fe2O3Film.It is different
Sodium ascorbate is oxygen scavenger, the cathodic corrosion of effective anti-block.Zinc sulfate is cathode deposition model corrosion inhibiter.Butyl second two
Alcohol, cosolvent.BTA, is the corrosion inhibiter of copper.Neopelex, ethoxylated alkyl sulfate is anion
Surfactant.AEO is nonionic surfactant.Polyoxyethylene oxypropylene glycerine is defoamer.
The each component mechanism of action is the decontamination by surfactant to the metal watch in pipeline and in heat exchanger
The organic matter in face, glutinous mud are cleaned, while changing the surface tension between anti-incrustation corrosion inhibitor film and metal, are preferably formed and protected
Cuticula.Carboxylic acid group and phosphonate group in organic phosphine scale inhibitor belong to the chelation of ion to CaCO with underwater gold3Play scattered, it is soft
The effect of change.Substantial amounts of carboxylic acid group can strengthen the chelating for belonging to ion with high rigidity, high alkalinity underwater gold in macromolecule antisludging agent
Effect, while except scattered, softening outside incrustation scale, moreover it is possible to comparatively dense polymeric membrane is formed in metal surface, dirt is effectively prevented
Lower corrosion, stability is good, and heat-resisting ability is strong.Small molecule and the complex form of macromolecule antisludging agent pass through covalent bond and non-covalent
Key forms polynary network structure, and capture ability is strong.The addition of zinc salt compensate for the slow shortcoming of organic medicament film forming, being capable of quick shape
Into inoranic membrane.The invention by chemistry, physical action, by chemical bond, hydrogen bond, Van der Waals force cooperative effect so that compounding
Type medicament plays each component advantage, and is complemented each other adjustment electrode potential and surface tension by each composition, reaches scale inhibitor
Optimal effectiveness.
The present invention is using water as solvent, low-phosphorous organic polycarboxylic acid type multiple copolymer anti-incrustation corrosion inhibitor, it is desirable to the powder performance
The characteristics of with organic phospho acid and carboxylic acid polyalcohol antiscaling dispersion, inhibition, while should have Stability Analysis of Structures (containing C-P keys),
It is phosphorous low, small toxicity, it is environmentally safe, with other medicament compatibilities it is good the advantages of, be adapted in high rigidity, high alkalinity, height
Used under the harsh conditions such as pH value, temperature change be big.
The method have the advantages that the change of (1) to electrolyte in water concentration, pH is insensitive；(2) can rapid, high volume capture metal
Ion, it is adaptable to the big water environment of high rigidity, high alkalinity, temperature change；(3) there is copper and be applicable without copper system system；(4) cost is low
Honest and clean, high cost ingredients consumption is few；(5) for having preferable cleaning performance at the more heat exchanger entrance of organic matter, glutinous mud, effectively
Underdeposit corrosion and tube sheet is prevented to corrode, corrosion rate is far smaller than standard value.(6) scale inhibitor scale removal excellent effect, low-phosphorous
Environmental protection.
Embodiment
Embodiment 1
Component composition is as follows in the aqueous solution：
Organic phosphine scale inhibitor：2- phosphonic acid butane -1,2,4- tricarboxylic acids 10mg/L；
The low phosphine antisludging agent of macromolecule：Poly- 1- phosphonate groups -1,2,3- tri carboxyl butanes 40mg/L；
Carbon steel corrosion inhibitor：Ammonium molybdate 4mg/L；
Oxygen scavenger：Sodium isoascorbate 4mg/L；
Cathode deposition model corrosion inhibiter：Zinc sulfate 1mg/L；
Cosolvent：Butyl glycol 100mg/L；
The corrosion inhibiter of copper：BTA 1mg/L；
Anion surfactant：Neopelex 40mg/L；
Anion surfactant：Ethoxylated alkyl sulfate 10mg/L；
Nonionic surfactant：AEO 5mg/L；
Defoamer：Polyoxyethylene oxypropylene glycerine 1mg/L.
Embodiment 2
Component composition is as follows in the aqueous solution：
Organic phosphine scale inhibitor：2- phosphonic acid butane -1,2,4- tricarboxylic acids 20mg/L；
The low phosphine antisludging agent of macromolecule：Poly- 1- phosphonate groups -1,2,3- tri carboxyl butanes 50mg/L；
Carbon steel corrosion inhibitor：Ammonium molybdate 5mg/L；
Oxygen scavenger：Sodium isoascorbate 5mg/L；
Cathode deposition model corrosion inhibiter：Zinc sulfate 2mg/L；
Cosolvent：Butyl glycol 200mg/L；
The corrosion inhibiter of copper：BTA 2mg/L；
Anion surfactant：Neopelex 50mg/L；
Anion surfactant：Ethoxylated alkyl sulfate 20mg/L；
Nonionic surfactant：AEO 10mg/L；
Defoamer：Polyoxyethylene oxypropylene glycerine 2mg/L.
Embodiment 3
Component composition is as follows in the aqueous solution：
Organic phosphine scale inhibitor：2- phosphonic acid butane -1,2,4- tricarboxylic acids 30mg/L；
The low phosphine antisludging agent of macromolecule：Poly- 1- phosphonate groups -1,2,3- tri carboxyl butanes 60mg/L；
Carbon steel corrosion inhibitor：Ammonium molybdate 6mg/L；
Oxygen scavenger：Sodium isoascorbate 6mg/L；
Cathode deposition model corrosion inhibiter：Zinc sulfate 3mg/L；
Cosolvent：Butyl glycol 300mg/L；
The corrosion inhibiter of copper：BTA 3mg/L；
Anion surfactant：Neopelex 60mg/L；
Anion surfactant：Ethoxylated alkyl sulfate 30mg/L；
Nonionic surfactant：AEO 15mg/L；
Defoamer：Polyoxyethylene oxypropylene glycerine 3mg/L.
Embodiment 4
Component composition is as follows in the aqueous solution：
Organic phosphine scale inhibitor：2- phosphonic acid butane -1,2,4- tricarboxylic acids 20mg/L；
The low phosphine antisludging agent of macromolecule：Poly- 1- phosphonate groups -1,2,3- tri carboxyl butanes 50mg/L；
Carbon steel corrosion inhibitor：Ammonium molybdate 5mg/L；
Oxygen scavenger：Sodium isoascorbate 5mg/L；
Cathode deposition model corrosion inhibiter：Zinc sulfate 3mg/L；
Cosolvent：Butyl glycol 100mg/L；
The corrosion inhibiter of copper：BTA 1mg/L；
Anion surfactant：Neopelex 50mg/L；
Anion surfactant：Ethoxylated alkyl sulfate 20mg/L；
Nonionic surfactant：AEO 15mg/L；
Defoamer：Polyoxyethylene oxypropylene glycerine 1mg/L.
It is following to come furtherly of the invention by experiment and application.
1. experiment content：
1.1 inventive formulations are tested
70 DEG C of the heat supply network water sample of certain steam power plant one time is taken, result is as shown in table 1 after testing.
The heat supply network water sample of table 1
| The project indicator | Numerical value |
| pH | 8.56 |
| Hardness/(mgL-1) | 550 |
| Turbidity/NTU | 6.10 |
| Basicity/(mgL-1) | 480 |
| Cl-/(mg·L-1) | 71 |
| Soluble solids mass concentration/(mgL-1) | 1000 |
| Total iron/(mgL-1) | 0.2 |
Using calculating Ryzna index of stability (IRSI) carry out fouling or corrosion tendency calculating：
IRSI=2pHs-pH
PHs=(9.30+A+B)-(C+D)
In formula：A is total dissolved solidss coefficient；B is temperature coefficient；C is calcium hardness coefficient；D to M is basicity factor.
According to the measured result of table 1, I is calculatedRSI=2.1 ＜ 3.7, illustrate that the water sample has serious scale tendency.
Pass through《The measure of water treatment agent corrosion inhibition-rotary hanging plate method》(GB/T18175-2014) revolved in the types of RCC- II
Turn linked to the correlation test that rate of corrosion measure is carried out on piece corrosion test instrument.
The medicament each component code of table 2
Influence of the scale inhibition constituent concentration compatibility of table 3 to scale inhibition effect
Influence of the scale removal constituent concentration compatibility of table 4 to scale removal effect
After being mixed using the best formula of scale inhibition performance with de-sludging effect highest formula find scale inhibition performance, corrosion inhibition rate,
When descaling rate is all higher than respective be used alone.
The scale inhibition of the optium concentration compatibility of table 5, inhibition, scale removal effect
The effect stability experiment of 1.2 optimum formulas
The performance test of the present invention is mainly by the change of the electrolyte concentration, pH that adjust water sample, hardness, basicity, temperature
Degree, copper ion concentration observe scale inhibition, inhibition, descaling rate, effect.
CJJ34 is only provided to heat supply network supplement water water quality, and heating network operation water is not distinctly claimed.
Due to the domestic water standard without heating network operation water, according to《Code for design of industrial recirculating cooling water treatment》
GB50050-2007 regulation corrosion of carbon steel rates are less than 0.075mm/a, and the rate of corrosion of copper, copper alloy and stainless steel tube wall should be less than
0.005mm/a, the water quality requirement of cold open type cooling water is that it is waterborne that alternative is applied to heating network operation shown in table 5 between pair.
Table 6 runs water quality standard value
Select disparity items to carry out scale inhibition performance, corrosion inhibition rate, descaling rate detection in the critical field, the results are shown in Table 7~12.
The chlorion of table 7 to scale inhibition performance, corrosion inhibition rate, descaling rate influence
| Cl-(mg/L) ion concentration | Scale inhibition performance (%) | Corrosion inhibition rate (%) | Descaling rate (%) |
| 700 | 97.22 | 97.21 | 95.32 |
| 600 | 97.30 | 97.60 | 95.44 |
| 500 | 97.43 | 97.86 | 95.65 |
| 400 | 97.99 | 98.01 | 95.88 |
| 300 | 98.02 | 98.13 | 95.92 |
| 200 | 98.12 | 98.21 | 96.02 |
| 100 | 98.23 | 98.36 | 96.43 |
| 5 | 99.00 | 99.21 | 98.69 |
The sulfate ion of table 8 to scale inhibition performance, corrosion inhibition rate, descaling rate influence
| SO4 2-(mg/L) ion concentration | Scale inhibition performance (%) | Corrosion inhibition rate (%) | Descaling rate (%) |
| 500 | 94.21 | 94.41 | 95.12 |
| 400 | 96.33 | 97.60 | 95.34 |
| 300 | 97.43 | 97.82 | 95.57 |
| 200 | 97.92 | 98.01 | 95.88 |
| 150 | 98.12 | 98.13 | 96.02 |
| 100 | 98.19 | 98.21 | 96.52 |
| 50 | 98.78 | 98.46 | 97.33 |
| 5 | 99.00 | 99.21 | 98.69 |
The pH value of table 9 to scale inhibition performance, corrosion inhibition rate, descaling rate influence
| pH | Scale inhibition performance (%) | Corrosion inhibition rate (%) | Descaling rate (%) |
| 6.5 | 97.21 | 97.11 | 96.01 |
| 7.5 | 97.45 | 97.76 | 96.09 |
| 8.5 | 98.21 | 98.12 | 96.21 |
| 9.5 | 98.02 | 97.64 | 96.00 |
| 10.5 | 98.00 | 97.56 | 95.32 |
The calcium hardness of table 10 to scale inhibition performance, corrosion inhibition rate, descaling rate influence
| YDCa(mg/L) | Scale inhibition performance (%) | Corrosion inhibition rate (%) | Descaling rate (%) |
| 1100 | 96.21 | 96.21 | 95.11 |
| 900 | 96.45 | 96.45 | 95.39 |
| 700 | 97.21 | 97.21 | 95.71 |
| 500 | 97.02 | 97.02 | 95.90 |
| 300 | 98.00 | 98.00 | 95.99 |
| 100 | 98.21 | 98.21 | 96.03 |
| 50 | 98.33 | 98.33 | 96.12 |
The temperature of table 11 to scale inhibition performance, corrosion inhibition rate, descaling rate influence
| T(℃) | Scale inhibition performance (%) | Corrosion inhibition rate (%) | Descaling rate (%) |
| 40 | 98.45 | 98.23 | 95.32 |
| 50 | 98.25 | 98.15 | 96.21 |
| 60 | 98.12 | 98.11 | 96.31 |
| 70 | 98.03 | 97.96 | 96.29 |
| 80 | 97.50 | 97.49 | 96.43 |
| 90 | 97.25 | 97.33 | 96.21 |
| 100 | 95.52 | 95.24 | 95.45 |
| 110 | 95.32 | 95.21 | 95.21 |
| 120 | 95.13 | 95.10 | 95.13 |
| 130 | 94.21 | 94.89 | 94.84 |
| 140 | 94.01 | 94.54 | 94.11 |
| 150 | 94.00 | 94.25 | 94.02 |
The copper ion of table 12 to scale inhibition performance, corrosion inhibition rate, descaling rate influence
| Cu2+(mg/L) ion concentration | Scale inhibition performance (%) | Corrosion inhibition rate (%) | Descaling rate (%) |
| 0.2 | 96.78 | 96.39 | 95.34 |
| 0.1 | 97.54 | 97.56 | 96.21 |
| 0.05 | 97.92 | 97.74 | 96.22 |
| 0 | 98.12 | 98.33 | 96.30 |
According to more than experimental result, find the anti-incrustation corrosion inhibitor electrolyte concentration of the application effect by residing water sample,
The environmental influences such as pH value, hardness, basicity, temperature, copper ion concentration are little.Scale inhibitor scale removal excellent effect, stably, most
Good effect can reach more than 98%.
2. application example
Example 1
Changchun steam power plant has a heat supply network, and pipeline is 304 stainless steels, and quantity of circulating water is 340t/h.Heat supply network is mended
Feedwater meets GB/T 12145《Thermal power generation unit and apparatus of steam power plants Water Vapor Quality》With CJJ 34《Urban heating webmaster is set
Count specification》Chapter 4) requirement.It is shown in Table 13.
The heat supply network make-up water water standard of table 13
70 DEG C of a heating network operation water sample is taken, after testing result such as table 14.
The water sample of table 14
| The project indicator | Numerical value |
| pH | 9.46 |
| Hardness/(mgL-1) | 500 |
| Turbidity/NTU | 6.20 |
| Basicity/(mgL-1) | 500 |
| Cl-/(mg·L-1) | 80 |
| Soluble solids mass concentration/(mgL-1) | 900 |
| Total iron mg/L | 0.2 |
Using calculating Ryzna index of stability (IRSI) carry out fouling or corrosion tendency calculating：
IRSI=2pHs-pH
PHs=(9.30+A+B)-(C+D)
In formula：A is total dissolved solidss coefficient；B is temperature coefficient；C is calcium hardness coefficient；D to M is basicity factor.
According to the result of table 14, I is calculatedRSI＜ 3.7, illustrates that the water sample has serious scale tendency.And occur repeatedly the lower corruption of dirt
Pipe explosion accident caused by erosion.
2014 by adding after the present invention so that IRSI6.0 are risen to, fouling tendency weakens, scale inhibition, inhibition, fouling rate
Respectively reach 98.11%, 98.21%, 97.32%.It is only 0.01% to add detection phosphorus content after operation water, much smaller than 5%
Conventional value, total phosphorus concentration is 0.007mg/L, less than 1.0mg/L (GB8978《Integrated wastewater discharge standard》), it is economic and environment-friendly,
Surrounding environment will not also be polluted by occurring leakage even if tube wall, and safe operation so far is more than 3 years, pipe cutting inspection and to hang piece experiment aobvious
Show, the corrosion rate of stainless steel tube wall is only 0.002mm/a, the setting less than 0.005mm/a, it is ensured that the safety of production is entered
OK.
Example 2
White mountain steam power plant has a heat supply network, and pipeline is carbon steel material, and quantity of circulating water is 240t/h.Heat supply network make-up water is accorded with
Close GB/T 12145《Thermal power generation unit and apparatus of steam power plants Water Vapor Quality》With CJJ 34《Urban heating webmaster design rule
Model》Chapter 4) requirement.It is shown in Table 15.
The heat supply network make-up water water standard of table 15
50 DEG C of a heating network operation water sample is taken, after testing result such as table 16.
The water sample of table 16
Using calculating Ryzna index of stability (IRSI) carry out fouling or corrosion tendency calculating：
IRSI=2pHs-pH
PHs=(9.30+A+B)-(C+D)
In formula：A is total dissolved solidss coefficient；B is temperature coefficient；C is calcium hardness coefficient；D to M is basicity factor.
According to the result of table 16, I is calculatedRSI＜ 3.7, illustrates that the water sample has serious scale tendency.And occur repeatedly the lower corruption of dirt
Pipe explosion accident caused by erosion.
2015 by adding after the present invention so that IRSI6.0 are risen to, fouling tendency weakens, scale inhibition, inhibition, fouling rate
Respectively reach 98.27%, 98.23%, 97.45%.It is only 0.005% to add detection phosphorus content after operation water, much smaller than 5%
Setting, total phosphorus concentration is 0.035mg/L, less than 1.0mg/L (GB8978《Integrated wastewater discharge standard》), it is economic and environment-friendly,
Surrounding environment will not also be polluted by occurring leakage even if tube wall.So far safe operation is more than 2 years, pipe cutting inspection and to hang piece experiment aobvious
Show, the corrosion rate of carbon steel tube wall is only 0.050mm/a, the setting less than 0.075mm/a, it is ensured that the safety of production is entered
OK.
Example 3
Baicheng steam power plant has a heat supply network, and pipeline contains copper material, and quantity of circulating water is 240t/h.Heat supply network make-up water meets
GB/T 12145《Thermal power generation unit and apparatus of steam power plants Water Vapor Quality》With CJJ 34《Urban heating webmaster design specification》
Chapter 4) requirement.It is shown in Table 17.
The heat supply network make-up water water standard of table 17
60 DEG C of a heating network operation water sample is taken, after testing result such as table 18.
The water sample of table 18
| The project indicator | Numerical value |
| pH | 9.5 |
| Hardness/(mgL-1) | 700 |
| Turbidity/NTU | 9.10 |
| Basicity/(mgL-1) | 900 |
| Cl-/(mg·L-1) | 79 |
| Soluble solids mass concentration/(mgL-1) | 1000 |
| Total iron/(mgL-1) | 0.1 |
Using calculating Ryzna index of stability (IRSI) carry out fouling or corrosion tendency calculating：
IRSI=2pHs-pH
PHs=(9.30+A+B)-(C+D)
In formula：A is total dissolved solidss coefficient；B is temperature coefficient；C is calcium hardness coefficient；D to M is basicity factor.
According to the result of table 17, I is calculatedRSI＜ 3.7, illustrates that the water sample has serious scale tendency.And occur repeatedly the lower corruption of dirt
Pipe explosion accident caused by erosion.
2014 by adding after the present invention so that IRSI6.0 are risen to, fouling tendency weakens, scale inhibition, inhibition, fouling rate
Respectively reach 98.17%, 98.43%, 97.27%.It is only 0.01% to add detection phosphorus content after operation water, much smaller than 5%
Conventional value, total phosphorus concentration is 0.007mg/L, less than 1.0mg/L (GB8978《Integrated wastewater discharge standard》), it is economic and environment-friendly,
Surrounding environment will not also be polluted by occurring leakage even if tube wall.So far safe operation is more than 3 years, pipe cutting inspection and to hang piece experiment aobvious
Show, the corrosion rate of copper pipe wall is only 0.001mm/a, the setting less than 0.005mm/a, it is ensured that the safety progress of production.
By exemplary application, the present invention can apply using 304 stainless steels, carbon steel, the heat exchange pipeline containing copper pipe fitting and
In heat supply network of heat exchanger, excellent performance, effect stability.
Claims (2)
1. a kind of special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant, it is characterised in that：Using water as solvent, water
Component composition is as follows in solution：
Organic phosphine scale inhibitor：10~30mg/L of 2- phosphonic acid butane -1,2,4- tricarboxylic acids；
The low phosphine antisludging agent of macromolecule：40~60mg/L of poly- 1- phosphonate groups -1,2,3- tri carboxyl butanes；
Carbon steel corrosion inhibitor：4~6mg/L of ammonium molybdate；
Oxygen scavenger：4~6mg/L of sodium isoascorbate；
Cathode deposition model corrosion inhibiter：1~3mg/L of zinc sulfate；
Cosolvent：100~300mg/L of butyl glycol；
The corrosion inhibiter of copper：1~3mg/L of BTA；
Anion surfactant：40~60mg/L of neopelex；
Anion surfactant：10~30mg/L of ethoxylated alkyl sulfate；
Nonionic surfactant：5~15mg/L of AEO；
Defoamer：1~3mg/L of polyoxyethylene oxypropylene glycerine.
2. the special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of a kind of steam power plant according to claim 1, it is special
Levy and be：Using water as solvent, component composition is as follows in the aqueous solution：
Organic phosphine scale inhibitor：2- phosphonic acid butane -1,2,4- tricarboxylic acids 20mg/L；
The low phosphine antisludging agent of macromolecule：Poly- 1- phosphonate groups -1,2,3- tri carboxyl butanes 50mg/L；
Carbon steel corrosion inhibitor：Ammonium molybdate 5mg/L；
Oxygen scavenger：Sodium isoascorbate 5mg/L；
Cathode deposition model corrosion inhibiter：Zinc sulfate 3mg/L；
Cosolvent：Butyl glycol 100mg/L；
The corrosion inhibiter of copper：BTA 1mg/L；
Anion surfactant：Neopelex 50mg/L；
Anion surfactant：Ethoxylated alkyl sulfate 20mg/L；
Nonionic surfactant：AEO 15mg/L；
Defoamer：Polyoxyethylene oxypropylene glycerine 1mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710604060.8A CN107244753A (en) | 2017-07-20 | 2017-07-20 | The special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710604060.8A CN107244753A (en) | 2017-07-20 | 2017-07-20 | The special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107244753A true CN107244753A (en) | 2017-10-13 |
Family
ID=60015445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710604060.8A Withdrawn CN107244753A (en) | 2017-07-20 | 2017-07-20 | The special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107244753A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109133388A (en) * | 2018-09-28 | 2019-01-04 | 南通善水化工科技发展有限公司 | A kind of open cooling water system compound water process stabilizer and preparation method thereof |
| CN111377550A (en) * | 2020-04-23 | 2020-07-07 | 西安热工研究院有限公司 | Scale and corrosion inhibitor for ultra-high temperature heat supply network system |
| CN114262069A (en) * | 2021-12-03 | 2022-04-01 | 德蓝(海南)未来之水有限公司 | Corrosion inhibitor for open type circulating cooling system of demineralized water and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654368A (en) * | 2004-02-11 | 2005-08-17 | 北京拓凯化工技术有限公司 | Environmental-protection high-efficiency low-phosphonic scale inhibitor composition and its preparation method and use |
| CN102351325A (en) * | 2011-08-29 | 2012-02-15 | 山东天庆科技发展有限公司 | Anti-scaling corrosion inhibitor for grey water recycling and preparation method thereof |
| CN102718333A (en) * | 2012-07-11 | 2012-10-10 | 山东天庆科技发展有限公司 | Efficient low-phosphorus compound water treatment agent |
| CN102923868A (en) * | 2012-11-15 | 2013-02-13 | 天津大学 | Composite corrosion and scale inhibitor for reclaimed water as circulating cooling water of power plant |
| CN103241846A (en) * | 2013-05-09 | 2013-08-14 | 北京市龙源科创石油技术有限公司 | Composite scale and corrosion inhibitor |
| CN103319010A (en) * | 2012-03-19 | 2013-09-25 | 常州市排水管理处 | Scale and corrosion inhibitor |
-
2017
- 2017-07-20 CN CN201710604060.8A patent/CN107244753A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654368A (en) * | 2004-02-11 | 2005-08-17 | 北京拓凯化工技术有限公司 | Environmental-protection high-efficiency low-phosphonic scale inhibitor composition and its preparation method and use |
| CN1307113C (en) * | 2004-02-11 | 2007-03-28 | 北京拓凯化工技术有限公司 | Environmental-protection high-efficiency low-phosphonic scale inhibitor composition and its preparation method and use |
| CN102351325A (en) * | 2011-08-29 | 2012-02-15 | 山东天庆科技发展有限公司 | Anti-scaling corrosion inhibitor for grey water recycling and preparation method thereof |
| CN103319010A (en) * | 2012-03-19 | 2013-09-25 | 常州市排水管理处 | Scale and corrosion inhibitor |
| CN102718333A (en) * | 2012-07-11 | 2012-10-10 | 山东天庆科技发展有限公司 | Efficient low-phosphorus compound water treatment agent |
| CN102923868A (en) * | 2012-11-15 | 2013-02-13 | 天津大学 | Composite corrosion and scale inhibitor for reclaimed water as circulating cooling water of power plant |
| CN103241846A (en) * | 2013-05-09 | 2013-08-14 | 北京市龙源科创石油技术有限公司 | Composite scale and corrosion inhibitor |
Non-Patent Citations (1)
| Title |
|---|
| 冯永训等: "《油田采出水处理设计手册》", 30 September 2005, 中国石化出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109133388A (en) * | 2018-09-28 | 2019-01-04 | 南通善水化工科技发展有限公司 | A kind of open cooling water system compound water process stabilizer and preparation method thereof |
| CN111377550A (en) * | 2020-04-23 | 2020-07-07 | 西安热工研究院有限公司 | Scale and corrosion inhibitor for ultra-high temperature heat supply network system |
| CN114262069A (en) * | 2021-12-03 | 2022-04-01 | 德蓝(海南)未来之水有限公司 | Corrosion inhibitor for open type circulating cooling system of demineralized water and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105712504B (en) | A kind of corrosion inhibiting and descaling agent for acidic high-temperature gas water, preparation method and application | |
| CN102730847B (en) | Non-phosphorus composite anti- incrustation corrosion inhibiter and its application in water treatment | |
| US4277359A (en) | Water treatment to inhibit corrosion and scale and process | |
| KR101137459B1 (en) | Method of water treatment for preventing corrosion and scale formation of metal | |
| CN109019884B (en) | Composite corrosion and scale inhibition dispersant and application thereof | |
| CN108623020A (en) | A kind of novel corrosion-retarding antisludging agent and the preparation method and application thereof | |
| CN104355419A (en) | Multifunctional scale and corrosion inhibitor and preparation method thereof | |
| CN104909471A (en) | Special corrosion and scale inhibitor for closed system, and preparation method thereof | |
| CN107244753A (en) | The special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant | |
| CN106430648A (en) | Antisludging agent used in highly hard and high alkalinity water and preparing method and antisludging method thereof | |
| CN104891680A (en) | Non-phosphorus corrosion and scale inhibitor and preparation method thereof | |
| JPS58171576A (en) | Preventive agent for corrosion, scale and contamination in water system | |
| Wang et al. | Hydroxyl carboxylate based non-phosphorus corrosion inhibition process for reclaimed water pipeline and downstream recirculating cooling water system | |
| CN102010076B (en) | Low-phosphorus corrosion inhibitor for sea water desalinization first-level reverse osmosis producing water | |
| JP5099884B2 (en) | Corrosion inhibitor | |
| CN109748401B (en) | Method for treating circulating cooling water | |
| CN101709473B (en) | High-temperature water-soluble corrosion inhibitor | |
| JPS63258697A (en) | Corrosion inhibitor also for suppressing scale of metals in aqueous system | |
| CN107055821A (en) | Recirculated cooling water non-phosphorus scale and corrosion inhibitor and its application method | |
| CN103922491A (en) | Energy-saving scale inhibiting and removing anticorrosion compound medicament for steam boiler and preparation method of medicament | |
| CN104649422A (en) | Composite scale and corrosion inhibitor applied to boiler closed circulating water system and preparation method thereof | |
| CN109970219B (en) | Reverse osmosis scale inhibitor and preparation method and application thereof | |
| KR101127157B1 (en) | Treatment method for prevent scale formation of cooling water system | |
| CN103803717A (en) | Method for recycling reclaimed water in circulating cooling water system | |
| CN106967537A (en) | Treatment of Industrial Water device is removed contamination scale remover and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171013 |
|
| WW01 | Invention patent application withdrawn after publication |