CN110257179A - A kind of chemical composition and its preparation method and application - Google Patents
A kind of chemical composition and its preparation method and application Download PDFInfo
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- CN110257179A CN110257179A CN201910536698.1A CN201910536698A CN110257179A CN 110257179 A CN110257179 A CN 110257179A CN 201910536698 A CN201910536698 A CN 201910536698A CN 110257179 A CN110257179 A CN 110257179A
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/044—Hydroxides or bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2003—Alcohols; Phenols
- C11D3/2041—Dihydric alcohols
- C11D3/2044—Dihydric alcohols linear
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/28—Heterocyclic compounds containing nitrogen in the ring
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/30—Amines; Substituted amines ; Quaternized amines
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3769—(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
- C11D3/3773—(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines in liquid compositions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a kind of chemical compositions, are made of the component of following parts by weight: 5-10 parts of diethanol amine, polyisobutene be succimide 3-5 parts more, 3-5 parts of sodium hydroxide, 1-2 parts of surfactant, 0.1-0.3 parts of benzotriazole, 100-150 parts of ethylene glycol, 10-15 parts of water.The present invention also provides the preparation method and application of above-mentioned chemical composition.Various components are combined and are prepared for environmental-friendly chemical composition by the present invention, reach the balance between each performance by the control of additive types and quantity, rather than the corresponding additive of simple selection for a certain performance, and the negative influence generated between each other is avoided in the selection of the type and type of additive as far as possible, therefore the better chemical composition of performance can be obtained.After being handled using chemical composition of the invention black dirt in air preheater, the descaling rate after 10h reaches 100%.
Description
Technical field
The invention belongs to cleaning agent technical fields, and in particular to a kind of chemical composition and preparation method thereof and answer
With.
Background technique
Air preheater is the Important Auxiliary equipment of power plant boiler, is usually heated using the heat of flue gas needed for burning
The heat-exchange apparatus of air.The heat of air preheater recovered flue gas, reduces exhaust gas temperature, simultaneously because air is preheated,
The initial temperature for improving fuel and air enhances the process of fuel and burning, reduces the endless total loss of fuel, improves
Boiler thermal efficiency.Meanwhile air preheat can also improve the flue-gas temperature in burner hearth, strengthen radiant heat transfer in furnace.Air preheater is
Through an important component for becoming modern boiler.
Ash Blocking in Air Preheater problem is generally existing in each power plant in the whole nation, although boiler original design is fitted with soot blowing and water
Flusher, but due to not can effectively clear air preheater black dirt, when lighting a fire again, moist black dirt has been burnt into " brick ",
Keep stifled ash more serious.Due to the stifled ash of air preheater, exhaust gas temperature is caused to increase, hot blast temperature decline, wind, cigarette system resistance
Rise, blow positive pressure side and the increase of air draught suction side two sides pressure difference, thus increase air preheater air leakage rate, suction ventilator standard-sized sheet when serious
Without pondage, combustion chamber draft is difficult to maintain, and influences the investment of burning automatic device.So effective scavenging air preheater
It is safety, energy conservation, the needs carried out production strictly in line with rules and regulations.
Generally alleviate stifled ash problem using soot blower or high pressure water cleaning device in the prior art, but these non-sides
Method can only all remove floating ash, unobvious to the cleaning effect of the stronger ammonium hydrogen sulfate of black dirt such as stickiness of long-term obstinate adherency, existing
Have also to have in technology using chemical and clean black dirt, but these chemicals apply in general under normal temperature environment clearly
It washes, high temperature can not be used for, so needing blowing out to cool down when in use, and scavenging period is longer, will affect power plant just
Often work, therefore, it is necessary to develop a kind of air preheater chemical suitable for using under hot conditions.
Summary of the invention
The present invention provides a kind of chemical compositions and its preparation method and application, and it is hollow to solve the prior art
The problem of air preheater chemical may not apply to hot environment.
The first purpose of the invention is to provide a kind of chemical compositions, by the component system of following parts by weight
At: 5-10 parts of diethanol amine, polyisobutene be succimide 3-5 parts more, 3-5 parts of sodium hydroxide, 1-2 parts of surfactant, benzene
And 0.1-0.3 parts of triazole, 100-150 parts of ethylene glycol, 10-15 parts of water.
Preferably, the chemical composition is made of the component of following parts by weight: 5 parts of diethanol amine, gather it is different
3 parts of the more succimides of butylene, 4 parts of sodium hydroxide, 1 part of surfactant, 0.2 part of benzotriazole, 120 parts of ethylene glycol, water 10
Part.
Preferably, the surfactant is polyethylene glycol 400.
A second object of the present invention is to provide a kind of preparation methods of chemical composition, comprising the following steps:
S1, weighs that 5-10 parts of diethanol amine, polyisobutene be succimide 3-5 parts more, sodium hydroxide 3-5 by weight
Part, 1-2 parts of surfactant, 0.1-0.3 parts of benzotriazole, 100-150 parts of ethylene glycol, 10-15 parts of water；
The weighed sodium hydroxide of S1 is dissolved in the weighed water of S1, obtains sodium hydroxide solution by S2；
S3 magnetizes the obtained sodium hydroxide solution of the weighed diethanol amine of S1, ethylene glycol and S2 after mixing
Processing, obtains magnetized liquid；
S4, the magnetization that the more succimides of polyisobutene weighed in S1, surfactant, benzotriazole and S3 are obtained
Liquid is uniformly mixed to arrive the chemical composition.
Preferably, in S3 magnetization treatment condition are as follows: magnetic field strength be 2500-3000Gs, magnetizing velocity 0.8-
1.2m/s, temperature be 20-40 DEG C under conditions of magnetization treatment 30-60min to get arrive the magnetized liquid.
Preferably, the concrete operations condition of S4 are as follows: by the more succimides of polyisobutene weighed in S1, surface-active
The magnetized liquid that agent, benzotriazole and S3 are obtained, in 80 DEG C of stirring 30min, is then cooled under the mixing speed of 2000r/min
50 DEG C are stirred for 30min, and stirring finishes ultrasonic mixing 20min to get the chemical composition is arrived.
Third object of the present invention is to provide above-mentioned chemical composition answering in air preheater scale removal
With.
Compared with prior art, the beneficial effects of the present invention are:
Air preheater irony heat accumulating element will form one layer of black dirt layer in use, and the main component of black dirt is sulphur
Sour hydrogen ammonium hard scale, diethanol amine is added in chemical composition of the invention, and discovery diethanol amine can be soaked and is impregnated with
Black dirt makes its softening, in the case where the more succimides of polyisobutene and diethanol amine are used cooperatively, can be further improved profit
Wet effect, the black dirt after making softening are not to be further formed accumulation, and can will be adsorbed on air preheat in rarefaction
Incrustation washs on device surface, is dispersed in cleaning agent, and air preheater surfaces is made to keep cleaning；The more succinyl of polyisobutene
On the one hand imines peomotes the wettability of diethanol amine, on the other hand there is excellent high temperature dispersibility and a high position to stablize
Property, can guarantee chemical at high temperature has preferable peace and quiet dispersion effect；Benzotriazole has stronger corrosion resistance
Energy；Sodium hydroxide and ammonium hydrogen sulfate reaction, generate soluble sodium sulphate and ammonia, to decompose ammonium hydrogen sulfate hard scale；Table
Face activating agent can significantly reduce the surface tension of the interface of oil and gas, keep whole system uniformly not stratified；After ethylene glycol and water mixing
The boiling point of the solution arrived is high, and can not boil volatilization at 140-150 DEG C or so, and after diethanol amine is added, in magnetization treatment
Under the conditions of, boiling point can further be promoted to 160 DEG C or so, so that the cleaning agent prepared is made to can be used in high temperature applicationss, in addition,
The more succimides of polyisobutene are also high temperature resistant substance.
Various components are combined and are prepared for environmental-friendly chemical composition by the present invention, by additive types and
The control of quantity is directed to a certain performance and the corresponding additive of simple selection to reach the balance between each performance, and
The negative influence generated between each other is avoided in the selection of the type and type of additive as far as possible, therefore it is more preferable to obtain performance
Chemical composition.After being handled using chemical composition of the invention black dirt in air preheater,
Descaling rate after 10h reaches 100%, and the cleaning frequency rises to 2.5 years to 3 years.
Specific embodiment
In order to enable those skilled in the art to more fully understand, technical solution of the present invention is practiced, below with reference to specific
The invention will be further described for embodiment, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1
A kind of chemical composition, is made of the component of following parts by weight: 5 parts of diethanol amine, polyisobutene are more
3 parts of succimide, 4 parts of sodium hydroxide, 1 part of polyethylene glycol 400,0.2 part of benzotriazole, 120 parts of ethylene glycol, 10 parts of water.
Specific preparation process is as follows:
S1 weighs 3 parts of the more succimides of 5 parts of diethanol amine, polyisobutene, 4 parts of sodium hydroxide, poly- second two by weight
4001 parts of alcohol, 0.2 part of benzotriazole, 120 parts of ethylene glycol, 10 parts of water；
The weighed sodium hydroxide of S1 is dissolved in the weighed water of S1, obtains sodium hydroxide solution by S2；
S3 magnetizes the obtained sodium hydroxide solution of the weighed diethanol amine of S1, ethylene glycol and S2 after mixing
Processing, the condition of magnetization treatment are as follows: under conditions of magnetic field strength is 2500Gs, magnetizing velocity 0.8m/s, temperature are 40 DEG C
Magnetization treatment 30min to get arrive magnetized liquid；
S4, the magnetic that the more succimides of polyisobutene weighed in S1, polyethylene glycol 400, benzotriazole and S3 are obtained
Change liquid under the mixing speed of 2000r/min in 80 DEG C of stirring 30min, is then cooled to 50 DEG C and is stirred for 30min, stirring finishes
Ultrasonic mixing 20min to get arrive chemical composition.
Embodiment 2
A kind of chemical composition, is made of the component of following parts by weight: 10 parts of diethanol amine, polyisobutene are more
4 parts of succimide, 3 parts of sodium hydroxide, 1.5 parts of polyethylene glycol 400,0.1 part of benzotriazole, 100 parts of ethylene glycol, water 10-12
Part.
Specific preparation process is as follows:
S1 weighs 4 parts of the more succimides of 10 parts of diethanol amine, polyisobutene, 3 parts of sodium hydroxide, poly- second by weight
4001.5 parts of glycol, 0.1 part of benzotriazole, 100 parts of ethylene glycol, 10-12 parts of water；
The weighed sodium hydroxide of S1 is dissolved in the weighed water of S1, obtains sodium hydroxide solution by S2；
S3 magnetizes the obtained sodium hydroxide solution of the weighed diethanol amine of S1, ethylene glycol and S2 after mixing
Processing, the condition of magnetization treatment are as follows: under conditions of magnetic field strength is 3000Gs, magnetizing velocity 1.0m/s, temperature are 30 DEG C
Magnetization treatment 40min to get arrive magnetized liquid；
S4, the magnetic that the more succimides of polyisobutene weighed in S1, polyethylene glycol 400, benzotriazole and S3 are obtained
Change liquid under the mixing speed of 2000r/min in 80 DEG C of stirring 30min, is then cooled to 50 DEG C and is stirred for 30min, stirring finishes
Ultrasonic mixing 20min to get arrive chemical composition.
Embodiment 3
A kind of chemical composition, is made of the component of following parts by weight: 8 parts of diethanol amine, polyisobutene are more
3 parts of succimide, 5 parts of sodium hydroxide, 2 parts of polyethylene glycol 400,0.3 part of benzotriazole, 150 parts of ethylene glycol, 15 parts of water.
Specific preparation process is as follows:
S1 weighs 3 parts of the more succimides of 8 parts of diethanol amine, polyisobutene, 5 parts of sodium hydroxide, poly- second two by weight
4002 parts of alcohol, 0.3 part of benzotriazole, 150 parts of ethylene glycol, 15 parts of water；
The weighed sodium hydroxide of S1 is dissolved in the weighed water of S1, obtains sodium hydroxide solution by S2；
S3 magnetizes the obtained sodium hydroxide solution of the weighed diethanol amine of S1, ethylene glycol and S2 after mixing
Processing, the condition of magnetization treatment are as follows: under conditions of magnetic field strength is 2500Gs, magnetizing velocity 1.2m/s, temperature are 20 DEG C
Magnetization treatment 60min to get arrive magnetized liquid；
S4, the magnetic that the more succimides of polyisobutene weighed in S1, polyethylene glycol 400 benzene and triazole and S3 are obtained
Change liquid under the mixing speed of 2000r/min in 80 DEG C of stirring 30min, is then cooled to 50 DEG C and is stirred for 30min, stirring finishes
Ultrasonic mixing 20min to get arrive chemical composition.
Effect in order to further illustrate the present invention, the present invention is also provided with comparative example, specific as follows.
Comparative example 1
A kind of chemical composition, is made of the component of following parts by weight: the more succimides 3 of polyisobutene
Part, 4 parts of sodium hydroxide, 1 part of polyethylene glycol 400,0.2 part of benzotriazole, 120 parts of ethylene glycol, 10 parts of water.
Specific preparation process is as follows:
S1 weighs 3 parts of the more succimides of polyisobutene, 4 parts of sodium hydroxide, 1 part of polyethylene glycol 400, benzene by weight
And 0.2 part of triazole, 120 parts of ethylene glycol, 10 parts of water；
The weighed sodium hydroxide of S1 is dissolved in the weighed water of S1, obtains sodium hydroxide solution by S2；
The sodium hydroxide solution that the weighed ethylene glycol of S1 and S2 obtain is carried out magnetization treatment by S3 after mixing, magnetization
The condition of processing are as follows: magnetization treatment under conditions of magnetic field strength is 2500Gs, magnetizing velocity 0.8m/s, temperature are 40 DEG C
30min to get arrive magnetized liquid；
S4, the magnetic that the more succimides of polyisobutene weighed in S1, polyethylene glycol 400, benzotriazole and S3 are obtained
Change liquid under the mixing speed of 2000r/min in 80 DEG C of stirring 30min, is then cooled to 50 DEG C and is stirred for 30min, stirring finishes
Ultrasonic mixing 20min to get arrive chemical composition.
Comparative example 2
A kind of chemical composition, is made of the component of following parts by weight: 5 parts of diethanol amine, sodium hydroxide 4
Part, 1 part of polyethylene glycol 400,0.2 part of benzotriazole, 120 parts of ethylene glycol, 10 parts of water.
Specific preparation process is as follows:
S1, weigh by weight 5 parts of diethanol amine, 4 parts of sodium hydroxide, 1 part of polyethylene glycol 400,0.2 part of benzotriazole,
120 parts of ethylene glycol, 10 parts of water；
The weighed sodium hydroxide of S1 is dissolved in the weighed water of S1, obtains sodium hydroxide solution by S2；
S3 magnetizes the obtained sodium hydroxide solution of the weighed diethanol amine of S1, ethylene glycol and S2 after mixing
Processing, the condition of magnetization treatment are as follows: under conditions of magnetic field strength is 2500Gs, magnetizing velocity 0.8m/s, temperature are 40 DEG C
Magnetization treatment 30min to get arrive magnetized liquid；
S4, stirring of the magnetized liquid that polyethylene glycol 400 weighed in S1, benzotriazole and S3 are obtained in 2000r/min
In 80 DEG C of stirring 30min under speed, then it is cooled to 50 DEG C and is stirred for 30min, stirring finishes ultrasonic mixing 20min to get arriving
Chemical composition.
Comparative example 3
A kind of chemical composition, is made of the component of following parts by weight: 4 parts of sodium hydroxide, polyethylene glycol
4001 parts, 0.2 part of benzotriazole, 120 parts of ethylene glycol, 10 parts of water.
Specific preparation process is as follows:
S1, weigh by weight 4 parts of sodium hydroxide, 1 part of polyethylene glycol 400,0.2 part of benzotriazole, 120 parts of ethylene glycol,
10 parts of water；
The weighed sodium hydroxide of S1 is dissolved in the weighed water of S1, obtains sodium hydroxide solution by S2；
The sodium hydroxide solution that the weighed ethylene glycol of S1 and S2 obtain is carried out magnetization treatment by S3 after mixing, magnetization
The condition of processing are as follows: magnetization treatment under conditions of magnetic field strength is 2500Gs, magnetizing velocity 0.8m/s, temperature are 40 DEG C
30min to get arrive magnetized liquid；
S4, stirring of the magnetized liquid that polyethylene glycol 400 weighed in S1, benzotriazole and S3 are obtained in 2000r/min
In 80 DEG C of stirring 30min under speed, then it is cooled to 50 DEG C and is stirred for 30min, stirring finishes ultrasonic mixing 20min to get arriving
Chemical composition.
Chemical composition that embodiment 1-3 and comparative example 1-3 are prepared is applied to all to be blocked by black dirt
Air preheater, to illustrate effect of the invention.
The height of air preheater used in test is 500mm, and 0.2 kilogram of chemical cleaning is sprayed by every square metre of surface
Chemical composition is sprayed onto air preheater cabinet, then by the ratio of agent composition under high temperature (140-160 DEG C)
Black dirt removal rate is calculated according to black dirt layer thickness variation in air preheater before and after the processing, black dirt removal rate is determined with following formula:
Black dirt removal rate=(H 1-H 2)/H1 × 100%
In formula: H 1- sprays the thickness of black dirt before cleaning agent, the i.e. original thickness of black dirt, mm；H 2- sprays cleaning agent one
The thickness of black dirt, mm after fixing time.
Concrete outcome is shown in Table 1.
The removal rate of 1 black dirt of table
As it can be seen from table 1 the 1st hour removal black dirt 22% or so of embodiment 1-3, removal black dirt 32% is left within the 2nd hour
The right side, the 5th hour removal black dirt 70% or so are all impregnated with air preheater cabinet in 10 hours, and black dirt is all removed, heat transfer
Element is clean as new, greatly improves heat transfer efficiency.Air preheater through this test process can keep in service 2.5-3.
Due to there is no an addition diethanol amine in comparative example 1, infiltration, softening black dirt effect not as good as embodiment 1-3,
Therefore, sodium hydroxide cannot sufficiently be reacted with black dirt dispersion, influence cleaning effect, in addition, diethanol amine is not added, cleaning agent
Boiling point also not as good as the height of embodiment 1-3, when temperature is 160 DEG C or so in air preheater, solvent has part volatilization, from
And cleaning agent is influenced in the dispersion on black dirt surface, and then influence cleaning effect.
Without the addition more succimides of polyisobutene in comparative example 2, diethanol amine to the infiltration of black dirt, bating effect by
Dispersion effect to influence, and cleaning agent is also affected, so cleaning effect is not as good as embodiment 1-3, but compared with comparative example 1
It is good, illustrate in entire formula, diethanol amine is more significant to the infiltration of black dirt, bating effect.
It is equivalent in comparative example 3 and directlys adopt sodium hydroxide to clean black dirt, although addition ethylene glycol and magnetization treatment
It can be improved solution boiling point, but sodium hydroxide itself poor permeability, be difficult infiltration, softening black dirt, be also just difficult to and internal layer ash
Dirt effect, so cleaning effect is poor；The test result of comparative example 3 also further illustrates the effect of diethanol amine and poly- isobutyl
Synergistic effect of the more succimides of alkene to diethanol amine.
The data for comparing comparative example 1 and comparative example 3 are also found that the cleaning effect of comparative example 1 is better than comparative example 3, say
The bright more succimides of polyisobutene may exist with sodium hydroxide to act synergistically, or exists with ethylene glycol and act synergistically, energy
Enough promote sodium hydroxide to the treatment effeciency of black dirt.
In order to verify the safety of chemical of the invention to air preheater, to embodiment 1-3 and comparative example 1-3
The corrosive nature of middle chemical is tested, and specific test method and result are as follows.
Erosion test is tested in the cleaning agent soaked the heat exchange element of air preheater after dilution, and meter is passed through
The variation of metal testing plate weightlessness and observation surface color is calculated to evaluate cleaning agent corrosivity energy.
It takes thermal element to weigh to obtain P1, then heat exchange element is immersed in cleaning agent, rinsed after being taken out after 72h with clear water
Completely, it dries, carries out appearance test, and the P2 that weighs again to obtain.The rate of corrosion that cleaning agent exchanges thermal element is determined with following formula:
Rate of corrosion=(P 1-P 2)/P1 × 100%
In formula: the quality of test piece, g before P 1- impregnates；The quality of test piece, g after P 2- impregnates.
Concrete outcome is shown in Table 2.
2 corrosion test test result of table
From table 2 it can be seen that the anticorrosion ability of chemical prepared by embodiment 1-3 and comparative example 1 is good.Comparison
Example 2 is slightly corroded, and comparative example 3 has slight erosion, is added with middle benzotriazole in the present invention and is used for anticorrosion, it is contemplated that at
Originally and environmentally friendly, the additive amount of benzotriazole is less, but can be seen that the more fourths two of polyisobutene from the data of comparative example 1-3
Acid imide is contributed in terms of cleaning agent Corrosion Protection.
Description of the invention preferred embodiment, once a person skilled in the art knows basic creative general
It reads, then additional changes and modifications may be made to these embodiments.So it includes preferred real that the following claims are intended to be interpreted as
It applies example and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of chemical composition, which is characterized in that be made of the component of following parts by weight: diethanol amine 5-10
Part, polyisobutene is succimide 3-5 parts more, 3-5 parts of sodium hydroxide, 1-2 parts of surfactant, 0.1-0.3 parts of benzotriazole,
100-150 parts of ethylene glycol, 10-15 parts of water.
2. chemical composition according to claim 1, which is characterized in that by the component system of following parts by weight
At: 3 parts of the more succimides of 5 parts of diethanol amine, polyisobutene, 4 parts of sodium hydroxide, 1 part of surfactant, benzotriazole 0.2
Part, 120 parts of ethylene glycol, 10 parts of water.
3. chemical composition according to claim 1 or 2, which is characterized in that the surfactant is poly- second
Glycol 400.
4. the preparation method of chemical composition according to claim 1, which comprises the following steps:
S1, weigh in parts by weight succimide 3-5 parts more 5-10 parts of diethanol amine, polyisobutene, 3-5 parts of sodium hydroxide,
1-2 parts of surfactant, 0.1-0.3 parts of benzotriazole, 100-150 parts of ethylene glycol, 10-15 parts of water；
The weighed sodium hydroxide of S1 is dissolved in the weighed water of S1, obtains sodium hydroxide solution by S2；
The obtained sodium hydroxide solution of the weighed diethanol amine of S1, ethylene glycol and S2 is carried out magnetization treatment by S3 after mixing,
Obtain magnetized liquid；
S4 mixes the obtained magnetized liquid of the more succimides of polyisobutene weighed in S1, surfactant, benzotriazole and S3
Close uniformly to get arrive the chemical composition.
5. the preparation method of chemical composition according to claim 4, which is characterized in that magnetization treatment in S3
Condition are as follows: magnetize under conditions of magnetic field strength is 2500-3000Gs, magnetizing velocity 0.8-1.2m/s, temperature are 20-40 DEG C
30-60min is handled to get the magnetized liquid is arrived.
6. the preparation method of chemical composition according to claim 4, which is characterized in that the concrete operations item of S4
Part are as follows: the obtained magnetized liquid of the more succimides of polyisobutene weighed in S1, surfactant, benzotriazole and S3 exists
In 80 DEG C of stirring 30min under the mixing speed of 2000r/min, then it is cooled to 50 DEG C and is stirred for 30min, it is mixed that stirring finishes ultrasound
20min is closed to get the chemical composition is arrived.
7. a kind of application of chemical composition described in claim 1 in air preheater scale removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910536698.1A CN110257179B (en) | 2019-06-20 | 2019-06-20 | Chemical cleaning agent composition and preparation method and application thereof |
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|---|---|---|---|
| CN201910536698.1A CN110257179B (en) | 2019-06-20 | 2019-06-20 | Chemical cleaning agent composition and preparation method and application thereof |
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| CN110257179A true CN110257179A (en) | 2019-09-20 |
| CN110257179B CN110257179B (en) | 2021-03-30 |
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| CN201910536698.1A Active CN110257179B (en) | 2019-06-20 | 2019-06-20 | Chemical cleaning agent composition and preparation method and application thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107674778A (en) * | 2017-10-31 | 2018-02-09 | 南阳理工学院 | It is a kind of to be used to remove chemical of air preheater hard scale and preparation method thereof |
| CN108856079A (en) * | 2018-06-15 | 2018-11-23 | 中国电建集团山东电力建设第工程有限公司 | A kind of device quickly cleaning cigarette cooler fouling |
| CN109652223A (en) * | 2018-12-19 | 2019-04-19 | 蔡洪涛 | A kind of composition, preparation method, application and automobile engine fuel oil box |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107674778A (en) * | 2017-10-31 | 2018-02-09 | 南阳理工学院 | It is a kind of to be used to remove chemical of air preheater hard scale and preparation method thereof |
| CN108856079A (en) * | 2018-06-15 | 2018-11-23 | 中国电建集团山东电力建设第工程有限公司 | A kind of device quickly cleaning cigarette cooler fouling |
| CN109652223A (en) * | 2018-12-19 | 2019-04-19 | 蔡洪涛 | A kind of composition, preparation method, application and automobile engine fuel oil box |
Non-Patent Citations (1)
| Title |
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| 西安热工研究院: "《火电厂SCR烟气脱硝技术》", 31 January 2013 * |
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