CN108623020A - A kind of novel corrosion-retarding antisludging agent and the preparation method and application thereof - Google Patents
A kind of novel corrosion-retarding antisludging agent and the preparation method and application thereof Download PDFInfo
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- CN108623020A CN108623020A CN201810446487.4A CN201810446487A CN108623020A CN 108623020 A CN108623020 A CN 108623020A CN 201810446487 A CN201810446487 A CN 201810446487A CN 108623020 A CN108623020 A CN 108623020A
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- acid
- retarding
- corrosion
- antisludging agent
- novel corrosion
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- 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
-
- 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
- C02F5/105—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 combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
Abstract
The present invention discloses a kind of novel corrosion-retarding antisludging agent, its component includes organic phosphonate, acrylic acid or acrylic copolymer, phosphate, organic acid, inorganic base, azole derivative and deionized water, and weight percent of each component in the corrosion inhibiting and descaling agent is organic phosphonate 15 20%, acrylic acid or acrylic copolymer 10 15%, phosphate 3 5%, organic acid 10 20%, inorganic base 4 8%, azole derivative 1 3%, deionized water surplus；The corrosion inhibiting and descaling agent can form net shaped composite film in metal surface.This novel corrosion-retarding antisludging agent can form one layer of net shaped composite film in metal surface, which refuses dirty significant effect, suitable for high alkalinity, the circulating water cooling treatment of high rigidity and high chloride ion.
Description
Technical field
The invention belongs to chemical circulation water-treatment technology fields, are related to water treatment agent, and in particular to a kind of novel corrosion-retarding
Antisludging agent.The present invention gives the preparation method of this novel corrosion-retarding antisludging agent, and its answering in circulating water cooling treatment
With.
Background technology
Water resource is the natural resources on basis and strategic economic resources, is not only the lifeblood of survival and development of mankind,
It is the controlling element of ecological environment.Water is the edge of all things on earth, and life originally, is the lifeblood of socio-economic development, is irreplaceable
Valuable natural resources.However, the influence of many human factors such as global warming and excess reclamation, felling, causes fresh water water to provide
Source is drastically reduced, and water shortage has become global problem, becomes one of the bottleneck for restricting social progress and economic development.
Industry cooling water consumption accounts for the large percentage of its total water consumption, and generally use circulating cooling improves cycles of concentration
Method reduces water consumption.Currently, domestic cycle water cycles of concentration generally rises to 3 times or more from 1.5~2 times when starting,
Certain industries have required the whole industry to reach 5 times, and the cycles of concentration of individual enterprises is even up to 8~10 times.As it can be seen that cycle water chemistry
Handle to save industrial water contribution be clearly with it is outstanding.Circulating cooling make-up water mostly uses greatly Treated sewage reusing, but by
It is all higher in the hardness, basicity, content of organics of middle water, into after circulation, with increasing for cycles of concentration, the alkali of water
The problems such as degree, hardness and pH value increase naturally, and circulation is easy to generate fouling, corrosion and biofouling, causes to exchange heat
Device efficiency declines and the serious consequences such as corrosion failure.
In order to prevent the problems such as the fouling of recirculating cooling water system, burn into bacteria breed, resistance is added usually in cooling water
The chemical agents such as dirty agent, corrosion inhibiter, fungicide, are traditionally commonly referred to as water quality stabilizer, can using the synergistic effect of these medicaments
To improve the stablizing effect of cooling water, production cost is reduced.Currently, the research preferable antisludging agent of more and scale inhibition effect is mostly phosphine
Barbiturates, such as hydroxy ethylene diphosphonic acid (HEDP), aminotrimethylenephosphonic acid (ATMP) and 2- phosphonobutanes -1,2,4- tricarboxylics
Sour (PBTCA) etc..These antisludging agents are saving water usage, improve the cycles of concentration of recirculated cooling water, protect apparatus
The significant effect of safe operation etc..It is to be noted that these phosphoric acid salt antisludging agents are easy hydrolysis or by systems
Existing biocide oxygenolysis generates PO4 3-Ion, through with the higher Ca of content in water2+Effect generates a plurality of types of phosphoric acid
Calcium precipitate, and phosphorus can function as the nutritional ingredient of bacterium and algae in water, cause water resource pollution.As people's environmental protection is anticipated
The gradual perfection increasingly improved with environmental regulation known, there is an urgent need to a kind of environment amenable novel non-phosphate water treatment agents.Separately
Outside, there are commonly machine phosphonic acid salt corrosion inhibiting and descaling agent, inhibitor mechanism is mainly that organic phospho acid is carried out with the calcium ions and magnesium ions in water
Calcium ions and magnesium ions in complexing, with water form stable complex compound, and this complex compound is recirculated water is subjected to water temperature, pH is carried
Solvable state is still kept after high, moisture concentration, still, as recirculated water is further concentrated by evaporation, these complex equilibriums will
It is broken so that fouling in water circulation system, burn into bacterium algae is grown and body eutrophication.
Invention content
The technical problem to be solved in the present invention：When recirculated water is concentrated and improved, existing conventional corrosion inhibiting and descaling agent is recycling
The problems such as complexation equilibrium in water is easily broken, and circulating water line and equipment are easy to generate fouling, corrosion and biofouling, causes
Circulation heat exchange efficiency is set to decline the even serious consequences such as corrosion failure.
In order to solve the above technical problems, the present invention provides a kind of novel corrosion-retarding antisludging agent.This erosion antisludging agent can overcome
Circulation technological deficiencies such as generated fouling and corrosion when cycles of concentration improves, realize water cooling equipment without fouling
Free from corrosion technical purpose.
Specifically, novel corrosion-retarding antisludging agent of the present invention, component includes organic phosphonate, acrylic acid or acrylic acid
Copolymer, phosphate, organic acid, inorganic base, azole derivative and deionized water, each component is in the corrosion inhibiting and descaling agent
Weight percent be organic phosphonate 15-20%, acrylic acid or acrylic copolymer 10-15%, it is phosphate 3-5%, organic
Sour 10-20%, inorganic base 4-8%, azole derivative 1-3%, deionized water surplus；The corrosion inhibiting and descaling agent can be in metal surface
Form net shaped composite film.
As the preferred of the novel corrosion-retarding antisludging agent, the organic phosphonate selects hydroxy ethylene diphosphonic acid, amino
It is one or more of in trimethylene phosphonic, 2- phosphate -1,2,4- butane tricarboxylates.It is further preferred that hydroxy ethylene two
The active constituent content of phosphonic acids is 60%, and C-P keys are contained in molecular structure, has preferable inoxidizability, at the same have compared with
Good scale inhibition and corrosion inhibition.Aminotrimethylenephosphonic acid has preferable scale effect to calcium carbonate scale.2- phosphates -1,2,4-
Contain phosphate (- PO (OH) in butane tricarboxylate (PBTCA) molecular structure2) and two kinds of groups of carboxyl (- COOH), this two
Under the collective effect of kind group so that 2- phosphates -1,2,4- butane tricarboxylates can be in the water quality of high temperature, high rigidity and high ph-values
Under the conditions of, there are scale-inhibiting properties more better than common organic phospho acid；2- phosphate -1,2,4- butane tricarboxylates are not easy to be formed simultaneously
The organic phospho acid calcium of indissoluble, and 2- phosphates -1,2,4- butane tricarboxylates chlorine resistance is good, oxidizable under strong oxidizer effect
It decomposes, especially suitable for the secondary effluent of the sewage plant after disinfection by chlorine dioxide.Contain hydroxyl simultaneously in novel corrosion-retarding antisludging agent
Base ethylidene diphosphonic acid, aminotrimethylenephosphonic acid, 2- phosphates -1,2, it is several in 4- butane tricarboxylates, since these have
The synergistic function of organic phosphonates so that the novel corrosion-retarding antisludging agent of preparation has good scale-inhibiting properties.
As the preferred of the novel corrosion-retarding antisludging agent, the acrylic acid or acrylic copolymer select acrylic acid -2- third
Acrylamide -2- methyl propane sulfonic acids copolymer, carboxylic acid-sulfonic acid-nonionic terpolymer, maleic acid-acrylic acid copolymer, propylene
It is one or more of in acid-acrylate-sulfonate terpolymer, acrylic acid-acrylic acid hydroxyl ethyl ester polymer.Copolymer analog hinders
Dirty dispersant is a kind of New Type Water Treatment Chemicals developed in recent years, and the acrylic acid or acrylic copolymer belong to copolymer analog resistance
Dirty dispersant.Acrylic acid -2- acrylamide-2-methyl propane sulfonics copolymer, carboxylic acid-sulfonic acid-nonionic terpolymer, Malaysia
Not only contain organic anti-scale in the molecular structure of acid-acrylic copolymer, acrylic acid-acrylic ester-sulfonate terpolymer
The carboxyl of dispersion performance, and containing the sulfonic group that can improve " calcium tolerance ", while compounding and having with other anti-incrustation corrosion inhibitors
There is preferable synergistic effect, anti-incrustation corrosion inhibitor dosage can be further decreased, in addition these polymer have brilliance to calcium phosphate scale
Scale prevention ability, while having good dispersion performance to di-iron trioxide.Acrylic acid or acrylic copolymer may be collectively referred to as gathering
The relative molecular mass of carboxylic acid, this substance is quite big, is linear polymer, one end be adsorbed on calcium carbonate etc. at it is dirty because
On the crystal grain of son, rest part is then surrounded to around crystal grain, makes it that can not increase and become round and smooth.Grain growth be interfered and
It distorts, crystal grain becomes tiny, and the dirty layer of formation is soft, is easily rinsed out by flow.Similarly, acrylic acid-acrylic acid hydroxyl ethyl ester
Polymer is due to many carboxyl functional groups, to playing interference and destruction at dirt mass-energy, crystal is made to be distorted, and
There is very strong peptizaiton to sediment, influence heat transfer efficiency to make sediment be not easy to be attached on tube wall.
As the preferred of the novel corrosion-retarding antisludging agent, the phosphate is selected in zinc dihydrogen phosphate or disodium hydrogen phosphate
It is one or two kinds of.Zinc dihydrogen phosphate is dissolved in water and decomposes, and has certain antirust, anti-corrosive effect to ferrous metal, decomposes generation
Zinc ion (Zn2+), a kind of cathodic corrosion inhibiter is can be used as, due in corrosion micro cell near cathodic region in solution
Local ph increases, and zinc ion generates hydroxide deposits in cathodic region with hydroxyl ion, it is suppressed that the cathode of corrosion process is anti-
Ying Erqi corrosion inhibitions.When zinc salt is compounded with organic phosphine simultaneously, preferable corrosion mitigating effect can be played.Zinc dihydrogen phosphate or phosphoric acid hydrogen
Disodium can provide phosphate (- PO (OH)2), the scale-inhibiting properties of the novel corrosion-retarding antisludging agent can be improved.
As the preferred of the novel corrosion-retarding antisludging agent, the organic acid formic acid, acetic acid, citric acid and ethylenediamine tetraacetic
One or more of acetic acid.The organic acid that the present invention selects is the smaller organic carboxyl acid of molecular weight, the carboxylic in molecular structure
Base (- COOH) makes it and can provide phosphate (- PO (OH)2) zinc dihydrogen phosphate or disodium hydrogen phosphate cooperate, into one
Step improves the good characteristic of the high temperature resistant of the novel corrosion-retarding antisludging agent, resistance to high rigidity and resistant to high pH value, has been obviously improved institute
State adaptability of the novel corrosion-retarding antisludging agent in high concentration multiple recirculated water.In addition, it may also be noted that the addition of organic acid
It can react with the incrustation scale, rust deposite and grease on heat transmission equipment surface；Simultaneously as organic carboxyl acid contains hydroxyl and carboxyl,
Hydrophilic chelate object can be formed by coordinate bond with metal cation, the growth of iron-oxidizing bacterium is significantly inhibited.
As the preferred of the novel corrosion-retarding antisludging agent, the azole derivative selects benzotriazole or sulfydryl benzo thiophene
Azoles.Benzotriazole belongs to precipitation membranous type corrosion inhibiter, is a kind of effectively copper and copper alloy corrosion inhibiter, while a variety of to iron etc.
Metal also has corrosion inhibition.Benzotriazole is mainly used for antirust agent and the inhibition of metal (metals such as silver, lead, nickel, zinc, copper)
Agent is chiefly used in copper and acid bronze alloy vapour phase inhibitor, circulating water treatment agent etc..Benzotriazole also can with a variety of antisludging agents, kill
Bacterium algicide is used cooperatively, and benzotriazole chlorine resistance is preferable, is suitble to the reuse of the sewage plant tail water after chlorination.Sulfydryl benzene
And thiazole is also a kind of excellent copper material antirust agent, can be combined, be alternateed with copper atom with covalent bond and coordinate bond, and key is formed
Shaped polymer forms insoluble protective film, to inhibit the corrosion of copper and alloy in metal surface.
As the preferred of the novel corrosion-retarding antisludging agent, the inorganic base selects sodium hydroxide or potassium hydroxide.Hydroxide
Active metal in sodium or potassium hydroxide can occur displacement with dirt and react, and to make dirt be removed from metal surface, be formed
Inorganic salts be dissolvable in water in water.
On the other hand, the present invention gives the preparation method of the novel corrosion-retarding antisludging agent.The preparation method is as follows：
The temperature of deionized water is set as 20-30 DEG C in stirred autoclave, and phosphate is added into stirred autoclave, waits for that phosphate is complete
After dissolving, organic phosphonate, acrylic acid or acrylic copolymer, organic acid and azole are added into stirred autoclave successively and is derived
Object is eventually adding inorganic base, and stirring is to after being completely dissolved up to the novel corrosion-retarding antisludging agent.
In addition, the present invention gives the application of the novel corrosion-retarding antisludging agent, i.e., it is suitable for circulating water cooling treatments.
Compared with existing corrosion inhibiting and descaling agent, novel corrosion-retarding antisludging agent of the present invention at least have following advantageous effect or
Advantage.
(1) novel corrosion-retarding antisludging agent of the present invention, component include organic phosphonate, acrylic acid or acrylic acid copolymer
Object, phosphate, organic acid, inorganic base, azole derivative and deionized water act synergistically between each component good, and stationary phase is long,
It is discharged without " three wastes " in production process, the concentration rate of industrial circulating cooling water can be made to reach 5 times or more, saved a large amount of fresh
Industrial water.Show that the scale inhibition performance of the novel corrosion-retarding antisludging agent can reach 95% or more by hanging test, and is applicable in
In the water quality of high alkalinity, high rigidity and high chloride ion.
(2) novel corrosion-retarding antisludging agent of the present invention can occur anti-with the incrustation scale, rust deposite and grease on heat transmission equipment surface
It answers, to make dirt be removed from metal surface, is distributed in recirculated water, to achieve the effect that scale removal and clean metal surface,
The double effects of scale inhibition and chelating are had both simultaneously.
(3) novel corrosion-retarding antisludging agent of the present invention is formed using organic molecule as the neutral net shaped composite film of network chain.It is this
Net shaped composite film is fine and close, smooth, and corrosion resistance is strong, and dirt is difficult to adhere to, and has and refuses dirty effect；Meanwhile it is this netted compound
Film has certain elasticity, strong adhesive force, high temperature resistant, corrosion-resistant medium and washing away at dirty medium.The non-phosphorus scale inhibition
Agent film forming speed is fast, and film layer damage can quickly repair and bulk metal surfaces are tightly combined.
(4) novel corrosion-retarding antisludging agent of the present invention, has iron bacteria certain inhibiting effect, inhibits the taste of bacterium
It is raw, reduce the dosage of fungicide.
(5) the raw materials used in the present invention is the environmental protection material of easily biological-degradable, to environment Small side effects, belong to it is a kind of efficiently,
Economic, environmental protection anti-incrustation corrosion inhibitor.
(6) novel corrosion-retarding antisludging agent of the present invention is one multi-purpose, and neutrality composite membrane is received with anti-corrosion while snaking
Dirty effect, corrosion-mitigation scale-inhibition rate is close to 100%.
Description of the drawings
Fig. 1 is field monitoring lacing film result figure described in the present embodiment.
Fig. 2 is the electron microscope of the processed circulating water line of novel corrosion-retarding antisludging agent described in embodiment 3.
Specific implementation mode
The composition and using effect of novel corrosion-retarding antisludging agent of the present invention are made with reference to specific embodiment further
Illustrate, but the range of the invention protected is not limited to the range of embodiment.
Embodiment 1
The present embodiment provides a kind of novel corrosion-retarding antisludging agent for recirculating cooling water system, the quality percentage of each component
Content is as follows：
Aminotrimethylenephosphonic acid：15%；
Acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymers：12%；
Zinc dihydrogen phosphate：3%
Citric acid：18%；
Sodium hydroxide：5%；
Benzotriazole：1.5%；
Deionized water：45.5%.
The preparation method of novel corrosion-retarding antisludging agent described in the present embodiment：
At a temperature of 25 DEG C, by 3kg zinc dihydrogen phosphates be added equipped with 45.5kg deionized waters stirred autoclave in into
Row stirring and dissolving sequentially adds the aminotrimethylenephosphonic acid of 15kg, the acrylic acid -2- acryloyls of 12kg after dissolving completely
Amine -2- methyl propane sulfonic acid copolymers, the benzotriazole of the citric acid of 18kg, 1.5kg are stirred, and are eventually adding 5kg hydrogen-oxygens
Change sodium, stirring is to being completely dissolved up to novel corrosion-retarding antisludging agent.
Embodiment 2
The present embodiment provides a kind of novel corrosion-retarding antisludging agent for recirculating cooling water system, the quality percentage of each component
Content is as follows：
2- phosphate -1,2,4- butane tricarboxylates：20%；
Carboxylic acid-sulfonic acid-nonionic terpolymer：15%；
Disodium hydrogen phosphate：5%
Formic acid：15%；
Potassium hydroxide：4%；
Mercaptobenzothiazoler：1%；
Deionized water：40%
The preparation method of novel corrosion-retarding antisludging agent described in the present embodiment：
At a temperature of 20 DEG C, 5kg disodium hydrogen phosphates are added in the stirred autoclave equipped with 40kg deionized waters and are carried out
Stirring and dissolving sequentially adds 2- phosphates -1,2 of 20kg, 4- butane tricarboxylates, carboxylic acid-sulphur of 15kg after dissolving completely
Acid-nonionic terpolymer, the mercaptobenzothiazoler of the formic acid of 15kg, 1kg are stirred, and are eventually adding 4kg sodium hydroxides,
Stirring is to being completely dissolved up to novel corrosion-retarding antisludging agent.
Embodiment 3
The present embodiment provides a kind of novel corrosion-retarding antisludging agent for recirculating cooling water system, the quality percentage of each component
Content is as follows：
Hydroxy ethylene diphosphonic acid：18%；
Acrylic acid-acrylic acid hydroxyl ethyl ester polymer：15%；
Zinc dihydrogen phosphate：4%
Ethylenediamine tetra-acetic acid：20%；
Potassium hydroxide：8%；
Benzotriazole：3%；
Deionized water：32%
The preparation method of novel corrosion-retarding antisludging agent described in the present embodiment：
At a temperature of 30 DEG C, 4kg zinc dihydrogen phosphates are added in the stirred autoclave equipped with 32kg deionized waters and are carried out
Stirring and dissolving sequentially adds the hydroxy ethylene diphosphonic acid of 18kg, the acrylic acid-acrylic acid hydroxyl second of 15kg after dissolving completely
The benzotriazole of ester polymer, the ethylenediamine tetra-acetic acid of 20kg, 3kg is stirred, and is eventually adding 8kg potassium hydroxide, stirring
To being completely dissolved up to novel corrosion-retarding antisludging agent.
Embodiment 4
The present embodiment provides a kind of novel corrosion-retarding antisludging agent for recirculating cooling water system, the quality percentage of each component
Content is as follows：
2- phosphate -1,2,4- butane tricarboxylates：16%；
Maleic acid-acrylic acid copolymer：10%；
Zinc dihydrogen phosphate：4%
Acetic acid：10%；
Sodium hydroxide：5%；
Benzotriazole：2%；
Deionized water：53%.
The preparation method of novel corrosion-retarding antisludging agent described in the present embodiment：
At a temperature of 25 DEG C, 4kg zinc dihydrogen phosphates are added in the stirred autoclave equipped with 53kg deionized waters and are carried out
Stirring and dissolving sequentially adds 2- phosphates -1,2 of 16kg, 4- butane tricarboxylates, the maleic acid-the third of 10kg after dissolving completely
The benzotriazole of olefin(e) acid copolymer, the acetic acid of 10kg, 2kg is stirred, and is eventually adding 5kg sodium hydroxides, is stirred to complete
It dissolves up to novel corrosion-retarding antisludging agent.
Embodiment 5
The present embodiment provides a kind of novel corrosion-retarding antisludging agent for recirculating cooling water system, the quality percentage of each component
Content is as follows：
Aminotrimethylenephosphonic acid：15%；
Acrylic acid-acrylic ester-sulfonate terpolymer：12%；
Zinc dihydrogen phosphate：5%
Ethylenediamine tetra-acetic acid：18%；
Potassium hydroxide：5%；
Benzotriazole：2%；
Deionized water：43%
The preparation method of novel corrosion-retarding antisludging agent described in the present embodiment：
At a temperature of 25 DEG C, 5kg zinc dihydrogen phosphates are added in the stirred autoclave equipped with 43kg deionized waters and are carried out
Stirring and dissolving sequentially adds the aminotrimethylenephosphonic acid of 15kg, acrylic acid-acrylic ester-sulphur of 12kg after dissolving completely
The benzotriazole of hydrochlorate terpolymer, the ethylenediamine tetra-acetic acid of 18kg, 2kg is stirred, and is eventually adding 5kg hydroxides
Potassium, stirring is to being completely dissolved up to novel corrosion-retarding antisludging agent.
Embodiment 6
The performance of the novel corrosion-retarding antisludging agent of embodiment 1 to embodiment 3 is detected.Reference《Water treatment agent scale inhibition performance
The measurement tosca method of energy》(GB/T16632-2008) experiment of calcium carbonate scale inhibition rate measurement, reference are carried out《Water process is slow
Measurement-rotary hanging plate method of corrosion energy》(GB/T18175-2000) rotary hanging plate experiment is carried out.
1, water quality is tested
| Project | Unit | Supplement water |
| PH value | 8.20 | |
| Turbidity | NTU | 0.12 |
| Calcium hardness is (with CaCO3Meter) | mg/L | 165.44 |
| Magnesium hardness is (with CaCO3Meter) | mg/L | 146.81 |
| It is total hard | mg/L | 312.27 |
| Total alkalinity is (with CaCO3Meter) | mg/L | 235.39 |
| Phenol alkali | mg/L | 5.6 |
| Chloride | mg/L | 108.08 |
| Conductivity | us/cm | 1123 |
2, corrosion inhibition determination experiment
2.1 laboratory apparatus and condition
Laboratory apparatus：Rotary hanging plate corrosion test instrument
Experimental temperature：50±1℃
Test rotary rpm：90r/min
Test piece material：A3(carbon steel material)
Test piece area：28cm2
Experimental period：72 hours.
2.2 experimental procedure
Lacing film is cleaned, weight is weighed after dry, is accurate to 0.0001g.2L experimental waters will be respectively poured into 3 2L beakers.
1# beakers：40ppm corrosion inhibiting and descaling agents A (novel corrosion-retarding antisludging agent described in embodiment 1) is added, after stirring evenly, puts
Enter in rotary hanging plate instrument, loads onto lacing film.
2# beakers：40ppm corrosion inhibiting and descaling agents B (novel corrosion-retarding antisludging agent described in embodiment 2) is added, after stirring evenly, puts
Enter in rotary hanging plate instrument, loads onto lacing film.
3# beakers：40ppm corrosion inhibiting and descaling agents C (novel corrosion-retarding antisludging agent described in embodiment 3) is added, after stirring evenly, puts
Enter in rotary hanging plate instrument, loads onto lacing film.
After corrosion inhibition test, lacing film is cleaned with carbon steel washing lotion, weighs after dry, is accurate to 0.0001g, calculates corrosion speed
Rate：
Corrosion rate=87600 × W/ (S × ρ × T) mm/a
In formula：The weightless g of W-test piece
The total surface area cm of S-test piece2
The density g/cm of ρ-test piece material2
T-experimental period
2.3 experimental data
Table 1, corrosion inhibition determination experiment result
Corrosion inhibition experimental result (table 1) described in the present embodiment can be seen that embodiment 1 to the novel corrosion-retarding of embodiment 3
Antisludging agent is suitable for 5 times or so of recirculated water cycles of concentration, high alkalinity, high rigidity, the water quality of high chloride ion, carbon steel lacing film corrosion speed
Rate is up to 0.037mm/a, is less than national standard.
3, scale inhibition is tested
3.1 experimental method
Calcium carbonate scale inhibition rate experiment is carried out according to experiment condition shown in national standard GBT16632-2008.
3.2 experiment condition
Novel corrosion-retarding scale inhibitor dosing concentration：20mg/L；Temperature：80 degrees Celsius；Time：10h.
3.3 experimental result
Calcium carbonate scale inhibition rate experimental result such as the following table 2, scale inhibition performance shown in table 2 are the average value of 3 repetition experiments.From table
The novel corrosion-retarding antisludging agent that result shown in 2 can be seen that embodiment 1 to embodiment 3 meets correlation to the scale inhibition performance of calcium carbonate scale
Standard requirement.
Table 2 hinders calcium carbonate scale experimental result
| Lot number | Calcium ion (ppm) | Scale inhibition performance |
| Corrosion inhibiting and descaling agent (A) | 165.44 | 96.25% |
| Corrosion inhibiting and descaling agent (B) | 165.44 | 98.74% |
| Corrosion inhibiting and descaling agent (C) | 165.44 | 97.72% |
| Blank | 54.16 | -- |
As can be seen from Table 2, the scale inhibition performance of embodiment 1 to the novel corrosion-retarding antisludging agent of embodiment 3 can reach 95% or more.
Embodiment 7
The novel corrosion-retarding antisludging agent of embodiment 3 is added in the Circulating Water pipeline of Shaanxi, and carries out stainless steel, copper
It is tested with carbon steel scene corrosion coupon.The daily monitoring of medicament corrosion inhibition is using monitoring hanging slice method, field monitoring lacing film evaluation knot
Fruit according to《GB50050-2007 Code for design of industrial recirculating cooling water treatment》It is required that carrying out, i.e.,：Carbon steel equipment heat-transfer area water side
Corrosion rate should be less than 0.075mm/a, and copper and stainless steel equipment heat-transfer area water side corrosion rate should be less than 0.005mm/a, and nothing
Apparent spot corrosion and Cavitations.
Stainless steel, copper and carbon steel scene corrosion coupon, are shown in Fig. 1.The novel corrosion-retarding antisludging agent described in embodiment 3 is processed
The electron microscope of circulating water line, is shown in Fig. 2.Figure it is seen that after using novel corrosion-retarding antisludging agent described in embodiment 3, Ke Yi
Bulk metal surfaces (pipeline surface) form net shaped composite film.
The daily monitoring corrosion test result of novel corrosion-retarding antisludging agent corrosion inhibition of 3 embodiment 3 of table
This live daily monitoring corrosion test of medicament corrosion inhibition is as a result, be shown in Table 3.Know from table 3, is refined oil in Shaanxi
The novel corrosion-retarding antisludging agent of embodiment 3 is added in factory's circulating water line, the live corrosion rate of stainless steel, copper and carbon steel lacing film is equal
Less than the requirement standard of country, and the phenomenon that do not occur in monitoring cycle fouling, corrosion and microbial growth.
Further narration is done to the present invention above in conjunction with embodiment, but present invention is not limited to the embodiments described above,
One skilled in the relevant art within the scope of knowledge, can also make without departing from the purpose of the present invention
Various change.
Claims (9)
1. a kind of novel corrosion-retarding antisludging agent, component includes organic phosphonate, acrylic acid or acrylic copolymer, phosphate, has
Machine acid, inorganic base, azole derivative and deionized water, weight percent of each component in the corrosion inhibiting and descaling agent are to have
Organic phosphonates 15-20%, acrylic acid or acrylic copolymer 10-15%, phosphate 3-5%, organic acid 10-20%, inorganic base
4-8%, azole derivative 1-3%, deionized water surplus；The corrosion inhibiting and descaling agent can form net shaped composite film in metal surface.
2. novel corrosion-retarding antisludging agent according to claim 1, which is characterized in that the organic phosphonate selects hydroxyl Asia second
Base di 2 ethylhexyl phosphonic acid, aminotrimethylenephosphonic acid, 2- phosphates -1,2, it is one or more of in 4- butane tricarboxylates.
3. novel corrosion-retarding antisludging agent according to claim 1, which is characterized in that the acrylic acid or acrylic copolymer choosing
With acrylic acid -2- acrylamide-2-methyl propane sulfonics copolymer, carboxylic acid-sulfonic acid-nonionic terpolymer, maleic acid-propylene
It is a kind of or several in acid copolymer, acrylic acid-acrylic ester-sulfonate terpolymer, acrylic acid-acrylic acid hydroxyl ethyl ester polymer
Kind.
4. novel corrosion-retarding antisludging agent according to claim 1, which is characterized in that the phosphate select zinc dihydrogen phosphate or
One or both of disodium hydrogen phosphate.
5. novel corrosion-retarding antisludging agent according to claim 1, which is characterized in that the organic acid formic acid, acetic acid, lemon
One or more of lemon acid and ethylenediamine tetra-acetic acid.
6. novel corrosion-retarding antisludging agent according to claim 1, which is characterized in that the azole derivative selects three nitrogen of benzo
Azoles or mercaptobenzothiazoler.
7. novel corrosion-retarding antisludging agent according to claim 1, which is characterized in that the machine alkali selects sodium hydroxide or hydrogen-oxygen
Change potassium.
8. the preparation method of any one of claim 1 to 7 novel corrosion-retarding antisludging agent, which is characterized in that stirred autoclave
The temperature of interior deionized water is set as 20-30 DEG C, and phosphate is added into stirred autoclave, after phosphate is completely dissolved, according to
It is secondary that organic phosphonate, acrylic acid or acrylic copolymer, organic acid and azole derivative are added into stirred autoclave, finally add
Enter inorganic base, stirring is to after being completely dissolved up to the novel corrosion-retarding antisludging agent.
9. any one of claim 1 to 8 novel corrosion-retarding antisludging agent is suitable for circulating water cooling treatment.
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| CN109402638A (en) * | 2018-11-14 | 2019-03-01 | 山东泰和水处理科技股份有限公司 | A kind of corrosion inhibiter for engine coolant |
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| CN113354109A (en) * | 2021-05-20 | 2021-09-07 | 大唐七台河发电有限责任公司 | Method for quickly cleaning scaling on circulating water cooling pipe wall of condenser |
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