CN104528960B - A kind of high efficiency corrosion inhibiting scale retardant - Google Patents
A kind of high efficiency corrosion inhibiting scale retardant Download PDFInfo
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- CN104528960B CN104528960B CN201410814322.XA CN201410814322A CN104528960B CN 104528960 B CN104528960 B CN 104528960B CN 201410814322 A CN201410814322 A CN 201410814322A CN 104528960 B CN104528960 B CN 104528960B
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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
- C02F5/12—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 nitrogen
- C02F5/125—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 nitrogen 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
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
Abstract
The invention discloses a kind of high efficiency corrosion inhibiting scale retardant, belong to water treatment field.This corrosion inhibiting and descaling agent is made up of poly-aspartate, sodium silicate, PDDA, polydiene base the third alkyl dimethyl ammonium chloride, hexamethylenetetramine, Bis(hydroxymethyl)imidazolidinyl urea, Methylisothiazolinone, trehalose, trishydroxymethylaminomethane and water, the corrosion inhibiting and descaling agent prepared through suitable technological process has the advantages such as corrosion mitigating effect good, for shelf-stable, component safety and environmental protection, environmentally safe, has good application prospect.
Description
Technical field
The invention belongs to water treatment field, more particularly, it relates to a kind of high efficiency corrosion inhibiting scale retardant.
Background technology
Worsening shortages due to freshwater resources, industrial circulating water cooling treatment medicament is increasingly subject to people's attention, recirculated cooling water is along with the overall process produced, account for the 70-80% of total water consumption, recirculated cooling water in use constantly evaporation and concentration so that cooling water pipeline fouling, corrosion phenomenon ratio more serious, easily grow bacterium algae, so that affecting the heat-transfer effect of equipment and shortening the service life of equipment, for solving these problems, it is necessary to recirculated cooling water is carried out water treatment.Organic phospho acid is a now widely used class water treatment agent, and it is the exploitation of external the mid-1960s, the class water treatment agent being identified the seventies, have good chemical stability, heat-resisting quantity and have that consumption is few concurrently, the feature such as inhibition and scale effect.Additionally, many metal ions are had the sequestering power of excellence by organic phospho acid, they solve system and produce the problem of calcium carbonate scale, and C-P key exists makes its stable chemical performance, more high temperature resistant, have substantially " threshold effect " and " cooperative effect ".It has the drawback that organic phospho acid can not suppress calcium phosphate scale, zinc dirt and the ferrum oxide deposition problems produced in phosphorus system and phosphorus zinc system water treatment formula effectively, and phosphorus-containing wastewater discharge causes body eutrophication and marine red tide problem.Abroad having been carried out limit phosphorus or prohibit phosphorus measure, China also advocates low-phosphorous and without phosphorus product exploitation energetically.Copolymer antisludging agent is to enter a kind of New Type Water Treatment Chemicals of exploitation after the eighties, and the pollution good, without phosphorus of its superior performance, compatibility, development prospect are wide, but its price is high, is used alone and can not meet water and process needs, thus need to add other components composite after use.
Through retrieval, Chinese patent application publication number CN101560022B discloses a kind of composite slow-corrosion scale resistor, this corrosion inhibiting and descaling agent is by organic phospho acid 15%～30%, acrylic acid or acrylic copolymer 10%～20%, poly 2%～10%, azole derivative 1%～3%, multi-element organic amine sulfonate 15%～30%, dimethylformamide or ethanol 2%～6%, the raw material of water 20%～35% mass proportioning is made, this invention composite slow-corrosion scale resistor is used for the middle water system as recirculated cooling water, can solve the problem that the corrosion that equipment is caused by middle water recirculated water, but in this composite slow-corrosion scale resistor, phosphorus content is higher and complicated components, it is only applicable to the middle water system as recirculated cooling water, application is restricted.Chinese patent application publication number CN102897925A discloses a kind of corrosion inhibiting and descaling agent, its raw material and weight proportion thereof be: molybdate 8-12%, nitrite 12-15%, azole derivative 4-6%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 10-15%, all the other are 4-5wt% aqueous slkali for concentration, this invention corrosion inhibiting and descaling agent is without zinc, alkalescence, molybdenum system formula, it is applicable to softening closed water circulation system, but molybdate and nitrite in corrosion inhibiter component are noxious substance, can to environment.Therefore, process needs to meet current water, be badly in need of developing a kind of toxicity low, environment, human body and crop are safe from harm, and the corrosion inhibiting and descaling agent that corrosion-mitigation scale-inhibition efficiency is high, cost is low.
Summary of the invention
The problem solved
Phosphorus content height is there is, to the problem such as environment and human body and crop be unfriendly for existing corrosion inhibiting and descaling agent, the present invention provides a kind of high efficiency corrosion inhibiting scale retardant, the corrosion inhibiting and descaling agent of the present invention have not phosphorous, component safety and environmental protection, production technology are simple, the advantages such as scale inhibition efficiency is high, corrosion inhibition is good, belong to environmentally friendly corrosion inhibiter.
Technical scheme
In order to solve the problems referred to above, the technical solution adopted in the present invention is as follows:
A kind of high efficiency corrosion inhibiting scale retardant, the mass fraction of its constituent and each component is: 10-15 part poly-aspartate, 20-30 part sodium silicate, 10-15 part PDDA, 15-20 part polydiene base the third alkyl dimethyl ammonium chloride, 8-15 part hexamethylenetetramine, 10-18 part Bis(hydroxymethyl)imidazolidinyl urea, 5-10 part Methylisothiazolinone, 5-10 part trehalose, 8-12 part trishydroxymethylaminomethane, 60-80 part water.
Preferably, the mass fraction of described each component is: 10 parts of poly-aspartates, 25 parts of sodium silicate, 15 parts of PDDAs, 15 parts of polydiene base the third alkyl dimethyl ammonium chlorides, 8 parts of hexamethylenetetramines, 16 parts of Bis(hydroxymethyl)imidazolidinyl urea, 10 parts of Methylisothiazolinone, 5 parts of trehaloses, 10 parts of trishydroxymethylaminomethane, 68 parts of water.
Bis(hydroxymethyl)imidazolidinyl urea application in corrosion inhibiting and descaling agent.
Trehalose application in corrosion inhibiting and descaling agent.
Beneficial effect
Compared to prior art, the invention have the benefit that
(1) corrosion inhibiting and descaling agent of the present invention is not phosphorous, component safety and environmental protection, production technology simple, and scale inhibition efficiency is high, corrosion inhibition is good, and compared with corrosion inhibiting and descaling agent of the prior art, anticorrosion-antiscaling effect improves more than 30%；
(2) Bis(hydroxymethyl)imidazolidinyl urea in the corrosion inhibiting and descaling agent component of the present invention suppresses the effect of microbial growth in cooling water with Methylisothiazolinone with the use of having, and can significantly improve the result of use of corrosion inhibiting and descaling agent；
(3) when polydiene base the third alkyl dimethyl ammonium chloride in the corrosion inhibiting and descaling agent component of the present invention is used alone, anticorrosion-antiscaling effect is general; but after adding trehalose in component; polydiene base the third alkyl dimethyl ammonium chloride can form layer protecting film at cooling water pipeline inner surface with trehalose, and this layer of protecting film can effectively stop the ion in cooling water and other materials corrosiveness to pipeline.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further described below.
Embodiment 1
A kind of high efficiency corrosion inhibiting scale retardant, the mass fraction of its constituent and each component is: 10 parts of poly-aspartates, 25 parts of sodium silicate, 15 parts of PDDAs, 15 parts of polydiene base the third alkyl dimethyl ammonium chlorides, 8 parts of hexamethylenetetramines, 16 parts of Bis(hydroxymethyl)imidazolidinyl urea, 10 parts of Methylisothiazolinone, 5 parts of trehaloses, 10 parts of trishydroxymethylaminomethane, 68 parts of water.
In order to obtain above-mentioned substance, the preparation method of above-mentioned a kind of high efficiency corrosion inhibiting scale retardant, the steps include:
(1) weigh poly-aspartate 10 parts by mass fraction, 25 parts, 15 parts polydiene base the third alkyl dimethyl ammonium chlorides of sodium silicate, 6 parts and 20 parts water of trishydroxymethylaminomethane stir under 110rpm speed, obtain the A liquid of corrosion inhibiting and descaling agent；
(2) weigh trishydroxymethylaminomethane 4 parts by mass fraction, PDDA 15 parts, 5 parts and 25 parts water of trehalose stir under 110rpm speed, and heat to 30 DEG C and be incubated 1h, obtain the B liquid of corrosion inhibiting and descaling agent；
(3) weigh hexamethylenetetramine 8 parts by mass fraction, Bis(hydroxymethyl)imidazolidinyl urea 16 parts, 10 parts and 23 parts water of Methylisothiazolinone stir under 110rpm speed, obtain the C liquid of corrosion inhibiting and descaling agent；
(4) the corrosion inhibiting and descaling agent C liquid obtained in the corrosion inhibiting and descaling agent A liquid obtained in step (1) and step (3) is uniformly mixed, obtains the D liquid of corrosion inhibiting and descaling agent；
(5) after the B liquid of the corrosion inhibiting and descaling agent in step (2) is cooled to 20 DEG C, being added in B liquid by the corrosion inhibiting and descaling agent D drop obtained under the mixing speed of 220rpm in step (4), rate of addition is 25g/min；
(6) the D liquid in step (5) is warming up to 30 DEG C after dropwising, and obtains the corrosion inhibiting and descaling agent described in claim 1 after stirring insulation 1h.
High efficiency corrosion inhibiting scale retardant water treatment efficiency in the present embodiment is good, for shelf-stable, and the situation lower seal at unglazed photograph preserves 2 years, and significant change does not occur for performance and the indices of liquid.
Test the corrosion mitigating effect of the high-efficient corrosion inhibitor obtained in the present embodiment according to the rotary hanging plate method of standard GB/T18175 2000 regulation, step is as follows:
Experiment material is aluminum (model 3003), and II type standard lacing film, specification is 50mm × 25mm × 2mm, area 28cm2.Lacing film used is all polished step by step through abrasive paper for metallograph, dries up with acetone cleaning, cold wind then through after distilled water, washes of absolute alcohol again, is placed in more than exsiccator 24h, standby.
Experiment adopts weight-loss method, experimental temperature 50 DEG C.The linear velocity that test piece rotates is maintained at 0.35m/s(70r/min), 72 hours time, lacing film is weighed after processing by GB/T18175 2000 method, then is calculated as follows the rate of corrosion V of lacing film:
V(mm/a)=8.76 × 104 △ W/s t ρ
In formula: △ W is the weightlessness (g) of lacing film, s is the surface area (cm of lacing film2), t is the time (h), and ρ is lacing film density (g/m3).
Then the corrosion inhibiter corrosion inhibition rate E to aluminum it is calculated as follows:
E(%)=100 (V0-Vc)/V0
In formula: V0For blank rate of corrosion, VcRate of corrosion for given corrosion inhibiter.
Testing liquid is 8% sodium hydroxide solution added with the corrosion inhibiter in the present embodiment and blank, and test result shows, when in solution, the concentration of corrosion inhibiter is 500ppm, the corrosion inhibition rate to aluminum is 97.5%.
Embodiment 2
A kind of high efficiency corrosion inhibiting scale retardant, the mass fraction of its constituent and each component is: 15 parts of poly-aspartates, 20 parts of sodium silicate, 13 parts of PDDAs, 20 parts of polydiene base the third alkyl dimethyl ammonium chlorides, 12 parts of hexamethylenetetramines, 10 parts of Bis(hydroxymethyl)imidazolidinyl urea, 5 parts of Methylisothiazolinone, 10 parts of trehaloses, 8 parts of trishydroxymethylaminomethane, 60 parts of water.
The preparation process of above-mentioned high efficiency corrosion inhibiting scale retardant is with embodiment 1.
The corrosion inhibiting and descaling agent water treatment efficiency of the present embodiment is good, for shelf-stable, and the situation lower seal at unglazed photograph preserves 3 years, and significant change does not occur for performance and the indices of liquid.
Test the corrosion mitigating effect of the high-efficient corrosion inhibitor obtained in the present embodiment according to the rotary hanging plate method of standard GB/T18175 2000 regulation, step is as follows:
Experiment material is aluminum (model 3003), and II type standard lacing film, specification is 50mm × 25mm × 2mm, area 28cm2.Lacing film used is all polished step by step through abrasive paper for metallograph, dries up with acetone cleaning, cold wind then through after distilled water, washes of absolute alcohol again, is placed in more than exsiccator 24h, standby.
Experiment adopts weight-loss method, experimental temperature 50 DEG C.The linear velocity that test piece rotates is maintained at 0.35m/s(70r/min), 72 hours time, lacing film is weighed after processing by GB/T18175 2000 method, then is calculated as follows the rate of corrosion V of lacing film:
V(mm/a)=8.76 × 104 △ W/s t ρ
In formula: △ W is the weightlessness (g) of lacing film, s is the surface area (cm of lacing film2), t is the time (h), and ρ is lacing film density (g/m3).
Then the corrosion inhibiter corrosion inhibition rate E to aluminum it is calculated as follows:
E(%)=100 (V0-Vc)/V0
In formula: V0For blank rate of corrosion, VcRate of corrosion for given corrosion inhibiter.
Testing liquid is 8% sodium hydroxide solution added with the high-efficient corrosion inhibitor in the present embodiment and blank, and test result shows, when in solution, the concentration of corrosion inhibiter is 700ppm, the corrosion inhibition rate to aluminum is 98.2%.
Embodiment 3
A kind of high efficiency corrosion inhibiting scale retardant, the mass fraction of its constituent and each component is: 12 parts of poly-aspartates, 30 parts of sodium silicate, 10 parts of PDDAs, 18 parts of polydiene base the third alkyl dimethyl ammonium chlorides, 15 parts of hexamethylenetetramines, 18 parts of Bis(hydroxymethyl)imidazolidinyl urea, 8 parts of Methylisothiazolinone, 7 parts of trehaloses, 12 parts of trishydroxymethylaminomethane, 80 parts of water.
The preparation process of above-mentioned high efficiency corrosion inhibiting scale retardant is with embodiment 1.
The high efficiency corrosion inhibiting scale retardant water treatment efficiency of the present embodiment is good, for shelf-stable, and the situation lower seal at unglazed photograph preserves 2 years, and significant change does not occur for performance and the indices of liquid.
Test the corrosion mitigating effect of the high-efficient corrosion inhibitor obtained in the present embodiment according to the rotary hanging plate method of standard GB/T18175 2000 regulation, step is as follows:
Experiment material is aluminum (model 3003), and II type standard lacing film, specification is 50mm × 25mm × 2mm, area 28cm2.Lacing film used is all polished step by step through abrasive paper for metallograph, dries up with acetone cleaning, cold wind then through after distilled water, washes of absolute alcohol again, is placed in more than exsiccator 24h, standby.
Experiment adopts weight-loss method, experimental temperature 50 DEG C.The linear velocity that test piece rotates is maintained at 0.35m/s(70r/min), 72 hours time, lacing film is weighed after processing by GB/T18175 2000 method, then is calculated as follows the rate of corrosion V of lacing film:
V(mm/a)=8.76 × 104 △ W/s t ρ
In formula: △ W is the weightlessness (g) of lacing film, s is the surface area (cm of lacing film2), t is the time (h), and ρ is lacing film density (g/m3).
Then the corrosion inhibiter corrosion inhibition rate E to aluminum it is calculated as follows:
E(%)=100 (V0-Vc)/V0
In formula: V0For blank rate of corrosion, VcRate of corrosion for given corrosion inhibiter.
Testing liquid is 8% sodium hydroxide solution added with the corrosion inhibiter in the present embodiment and blank, and test result shows, when in solution, the concentration of corrosion inhibiter is 800ppm, the corrosion inhibition rate to aluminum is 96.9%.
Claims (2)
1. a high efficiency corrosion inhibiting scale retardant, it is characterised in that: the mass fraction of its constituent and each component is: 10-15 part poly-aspartate, 20-30 part sodium silicate, 10-15 part PDDA, 15-20 part polydiene base the third alkyl dimethyl ammonium chloride, 8-15 part hexamethylenetetramine, 10-18 part Bis(hydroxymethyl)imidazolidinyl urea, 5-10 part Methylisothiazolinone, 5-10 part trehalose, 8-12 part trishydroxymethylaminomethane, 60-80 part water.
2. a kind of high efficiency corrosion inhibiting scale retardant according to claim 1, it is characterised in that: the mass fraction of described each component is: 10 parts of poly-aspartates, 25 parts of sodium silicate, 15 parts of PDDAs, 15 parts of polydiene base the third alkyl dimethyl ammonium chlorides, 8 parts of hexamethylenetetramines, 16 parts of Bis(hydroxymethyl)imidazolidinyl urea, 10 parts of Methylisothiazolinone, 5 parts of trehaloses, 10 parts of trishydroxymethylaminomethane, 68 parts of water.
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| CN105251463B (en) * | 2015-11-11 | 2019-03-05 | 徐享 | A kind of boiler wastewater inorganic agent and preparation method based on graphene modified polyaspartic acid |
| CN106045071B (en) * | 2016-06-29 | 2019-07-02 | 欣格瑞（山东）环境科技有限公司 | A kind of MVR evaporator antisludging agent and preparation method thereof |
| CN109097201B (en) * | 2018-08-22 | 2021-02-05 | 江西宝盛半导体能源科技有限公司 | Photoresist removing liquid and preparation method and application thereof |
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| CN104046455A (en) * | 2014-03-28 | 2014-09-17 | 安徽硕力实业有限公司 | Corrosion-resistant scale-inhibition magnesium-aluminum alloy wire drawing liquid |
| CN104086812A (en) * | 2014-07-01 | 2014-10-08 | 安徽江威精密制造有限公司 | Special filler for antirust capacitor film and preparation method of special filler |
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| CN104046455A (en) * | 2014-03-28 | 2014-09-17 | 安徽硕力实业有限公司 | Corrosion-resistant scale-inhibition magnesium-aluminum alloy wire drawing liquid |
| CN104086812A (en) * | 2014-07-01 | 2014-10-08 | 安徽江威精密制造有限公司 | Special filler for antirust capacitor film and preparation method of special filler |
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