CN105191980A - Compound sterilizing and alga killing agent for circulating cooling water and preparation method thereof - Google Patents
Compound sterilizing and alga killing agent for circulating cooling water and preparation method thereof Download PDFInfo
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- CN105191980A CN105191980A CN201510582880.2A CN201510582880A CN105191980A CN 105191980 A CN105191980 A CN 105191980A CN 201510582880 A CN201510582880 A CN 201510582880A CN 105191980 A CN105191980 A CN 105191980A
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- cooling water
- bromo
- isothiazolinone
- recirculated cooling
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Abstract
The invention relates to a compound sterilizing and alga killing agent for circulating cooling water and a preparation method thereof, and belongs to the technical field of water treatment. The compound sterilizing and alga killing agent for the circulating cooling water is prepared from, by weight, 10%-30% of isothiazolinone, 3%-15% of 2,2-dibromo-3-nitrilopropionamide, 5%-20% of polyethylene glycol, 5%-15% of alpha-bromocinnamaldehyde, 15%-25% of glutaraldehyde, 0.5%-2% of copper sulfate, 3%-10% of tannin and the balance deionized water. According to the compound sterilizing and alga killing agent for the circulating cooling water, the cost is low, the formula components have the obvious synergistic effects, and the compound sterilizing and alga killing agent has no interference with other water treatment agents and has the good sterilizing, alga killing and sludge stripping effects. Meanwhile, the invention provides a simple and convenient preparation method.
Description
Technical field
The present invention relates to a kind of composite sterilization algicide for recirculated cooling water and preparation method thereof, belong to water-treatment technology field.
Background technology
Industrial circulating cooling water is industrial important component part, after in day-to-day operation, supplementing water enters recirculating cooling water system, a large amount of microorganisms is brought in system.In addition, from air, a large amount of microorganisms has been trapped again in cooling tower spray process.Moreover the temperature range (being generally 20 ~ 40 DEG C) of recirculated cooling water is particularly conducive to microbial growth.Some factory technics dielectric leakage enters recirculating cooling water system, and for microorganism wherein provides nutrient source, therefore in recirculating cooling water system, people often can see the sight of microorganism raised growth.
The raised growth of microorganism, and be mixed to form attachment with silt, dust etc. or the microorganism viscosity mud piled up, these microorganism viscosity muds can cause following fault in recirculating cooling water system:
(1) foundry loam is attached to heat exchanger channel on the surface, reduces heat exchange efficiency;
(2) a large amount of foundry loam blocking heat exchanger channel, thus reduce flow and cooling effect, increase pump pressure;
(3), between the foundry loam surface that is accumulated in cooling tower filler or filler, the cooling effect of cooling tower is reduced;
(4) foundry loam covers metal surface, forms concentration cell, causes hardware to be corroded.
The most effective method of current control microorganism adds Biocidal algae-killing agent and adhesive mud remover exactly, but Biocidal algae-killing agent conventional at present and adhesive mud remover have following shortcoming: first water treatment agent bactericidal effect and sludge stripping effect can not get both, need alternately to add, and effectively can not suppress growth of microorganism, kill rear microorganism and can grow very soon again; Secondly a large amount of foam can be produced after conventional adhesive mud remover adds recirculated cooling water, and space division system requires can not have in recirculated cooling water foam due to the existence of molecular sieve, otherwise air cooling tower entrainment can be caused and seriously lose the phenomenon of the failure of adsorption capacity with water frozen block and molecular sieve.
Summary of the invention
The object of this invention is to provide a kind of composite sterilization algicide for recirculated cooling water, its cost is low, and formula components has obvious synergistic function, does not produce interference with other water treatment agents, has excellent sterilization algae removal and sludge stripping effect; The invention provides a kind of simple and convenient preparation method simultaneously.
The described composite sterilization algicide for recirculated cooling water, be made up of the raw material of following weight percentage: isothiazolinone 10% ~ 30%, 2,2-bis-bromo-3-nitrilo-propionamide 3% ~ 15%, polyethylene glycol 5% ~ 20%, alpha-bromo-cinnamaldehyde 5% ~ 15%, glutaraldehyde 15% ~ 25%, copper sulphate 0.5% ~ 2%, tannin 3% ~ 10%, surplus is deionized water.
Preferably, be made up of the raw material of following weight percentage: isothiazolinone 15% ~ 25%, 2,2-bis-bromo-3-nitrilo-propionamide 5% ~ 10%, polyethylene glycol 10% ~ 15%, alpha-bromo-cinnamaldehyde 5% ~ 10%, glutaraldehyde 20% ~ 25%, copper sulphate 0.5% ~ 1%, tannin 5% ~ 8%, surplus is deionized water.
In described isothiazolinone, the ratio of CMIT and MIT is 2:1.
Active matter content 14% in described isothiazolinone.
Described copper sulphate is cupric sulfate pentahydrate.
The preparation method of the described composite sterilization algicide for recirculated cooling water, first by 2, add in consersion unit after 2-bis-bromo-3-nitrilo-propionamide and alpha-bromo-cinnamaldehyde are dissolved in polyethylene glycol, deionized water, isothiazolinone, copper sulphate, tannin and glutaraldehyde is added successively under stirring condition again at 50 ~ 60 DEG C, stir after 20-50 minute and leave standstill, obtain the composite sterilization algicide for recirculated cooling water.
Isothiazolinone, primarily of CMIT (CIT) and MIT (MIT) composition.Isothiazolinone is key by disconnecting bacterium and algae protein matter and plays to kill livestock and act on.After isothiazolinone contacts with microorganism, can promptly irreversibly suppress it to grow, thus cause the death of microbial cell, therefore to common bacteria, fungi, algae etc., there is very strong suppression and killing action.Isothiazolinone efficiency of killing livestock is high, and degradability is good, has and does not produce the features such as residual, handling safety, compatibility are good, stability is strong, use cost is low, can with chlorine and most of anions and canons and non-ionic surface active agent miscible.
DBNPA is a kind of industrial bactericide of broad-spectrum high efficacy, is used for preventing bacterium and the algae growth and breeding in industrial circulating cooling water, can make foundry loam controlling agent simultaneously, be widely used in paper mill paper pulp and recirculating cooling water system.As the biocide of broad-spectrum high efficacy, the cell membrane of microorganism can be penetrated rapidly, and act on certain albumen group, the normal oxidation reduction of cell be stopped, thus causes cell death.Meanwhile, its branch can also the specific enzymes metabolite of optionally bromination or oxidizing microorganisms, finally causes microbial death.This product has good stripping performance, non-foam during use, and fluid product can arbitrarily than dissolving each other with water, low toxicity.
Glutaraldehyde is a kind of cooling water bactericide, can the effective quantity of various microorganism in controlled cooling model water system, and effectively peel off biological clay and biomembrane, good with various cooling water corrosion inhibiting and descaling agent compatibility, low toxicity, can not to environment.
Tannin, complexing aldehydes matter, extensively exists in plant, has the multiple performance such as corrosion-mitigation scale-inhibition and sterilization.
Composite sterilization algicide of the present invention, divides in recirculating cooling water system at sky and has carried out the trial run of a year by a definite date, and run duration detects water quality, and in water, content of microorganisms is all less than 1*10
5individual/ml, slime content is all less than 3ml/m
3.After opening heat exchanger, heat exchanger tube surface clean, light are without microorganism and foundry loam attachment, and each equipment normal operation, illustrates sterilization and the sludge stripping excellent effect of composite sterilization algicide of the present invention thus.
Composite sterilization algicide of the present invention is added in reactor in proportion by each raw material to stir at 50 ~ 60 DEG C, and production technology is simple, and raw material is easily composite, and product stability is good.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Compared with prior art, the present invention has following beneficial effect:
(1) described composite sterilization algicide cost is low, and formula components has obvious synergistic function, does not produce interference with other water treatment agents;
(2) described composite sterilization algicide, has excellent sterilization algae removal and sludge stripping effect, effectively can solve various recirculating cooling water system bacterium algae foundry loam and grow frequent, reluctant problem;
(3) described composite sterilization algicide, has various algae, bacterial fungus etc. and kills ability and very strong sludge stripping effect significantly, and can suppress microorganisms reproduction for a long time; Can not foam be produced after adding recirculated cooling water, be applicable to the recirculating cooling water system containing space division system;
(4) preparation method of described composite sterilization algicide is simple and convenient, is easy to suitability for industrialized production.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but it does not limit enforcement of the present invention.
Embodiment 1
A kind of composite sterilization algicide for recirculated cooling water, its preparation method is: first by 2, add in consersion unit after 2-bis-bromo-3-nitrilo-propionamide and alpha-bromo-cinnamaldehyde are dissolved in polyethylene glycol, deionized water, isothiazolinone, copper sulphate, tannin and glutaraldehyde is added successively under stirring condition again at 50 DEG C, stir after 20-50 minute and leave standstill, obtain the composite sterilization algicide for recirculated cooling water.
The weight percentage of each raw material is: isothiazolinone 15%, DBNPA 5%, polyethylene glycol 10%, alpha-bromo-cinnamaldehyde 8%, glutaraldehyde 15%, copper sulphate 0.5%, tannin 3%, deionized water 43.5%.
Embodiment 2
A kind of composite sterilization algicide for recirculated cooling water, its preparation method is: first by 2, add in consersion unit after 2-bis-bromo-3-nitrilo-propionamide and alpha-bromo-cinnamaldehyde are dissolved in polyethylene glycol, deionized water, isothiazolinone, copper sulphate, tannin and glutaraldehyde is added successively under stirring condition again at 60 DEG C, stir after 20-50 minute and leave standstill, obtain the composite sterilization algicide for recirculated cooling water.
The weight percentage of each raw material is: isothiazolinone 20%, DBNPA 10%, polyethylene glycol 15%, alpha-bromo-cinnamaldehyde 11%, glutaraldehyde 19%, copper sulphate 1.2%, tannin 7%, deionized water 16.8%.
Embodiment 3
A kind of composite sterilization algicide for recirculated cooling water, its preparation method is: first by 2, add in consersion unit after 2-bis-bromo-3-nitrilo-propionamide and alpha-bromo-cinnamaldehyde are dissolved in polyethylene glycol, deionized water, isothiazolinone, copper sulphate, tannin and glutaraldehyde is added successively under stirring condition again at 55 DEG C, stir after 20-50 minute and leave standstill, obtain the composite sterilization algicide for recirculated cooling water.
The weight percentage of each raw material is: isothiazolinone 25%, DBNPA 10%, polyethylene glycol 20%, alpha-bromo-cinnamaldehyde 10%, glutaraldehyde 20%, copper sulphate 2%, tannin 10%, deionized water 3%.
Embodiment 4
A kind of composite sterilization algicide for recirculated cooling water, its preparation method is: first by 2, add in consersion unit after 2-bis-bromo-3-nitrilo-propionamide and alpha-bromo-cinnamaldehyde are dissolved in polyethylene glycol, deionized water, isothiazolinone, copper sulphate, tannin and glutaraldehyde is added successively under stirring condition again at 55 DEG C, stir after 20-50 minute and leave standstill, obtain the composite sterilization algicide for recirculated cooling water.
The weight percentage of each raw material is: isothiazolinone 10%, DBNPA 3%, polyethylene glycol 5%, alpha-bromo-cinnamaldehyde 15%, glutaraldehyde 15%, copper sulphate 1%, tannin 5%, deionized water 46%.
Embodiment 5
A kind of composite sterilization algicide for recirculated cooling water, its preparation method is: first by 2, add in consersion unit after 2-bis-bromo-3-nitrilo-propionamide and alpha-bromo-cinnamaldehyde are dissolved in polyethylene glycol, deionized water, isothiazolinone, copper sulphate, tannin and glutaraldehyde is added successively under stirring condition again at 55 DEG C, stir after 20-50 minute and leave standstill, obtain the composite sterilization algicide for recirculated cooling water.
The weight percentage of each raw material is: isothiazolinone 30%, DBNPA 15%, polyethylene glycol 12%, alpha-bromo-cinnamaldehyde 5%, glutaraldehyde 20%, copper sulphate 2%, tannin 8%, deionized water 8%.
The composite sterilization algicide prepared by embodiment 1-5, divides in recirculating cooling water system at sky and has carried out the trial run of a year by a definite date, and run duration detects water quality, and in water, content of microorganisms is all less than 1*10
5individual/ml, slime content is all less than 3ml/m
3.
Claims (6)
1. the composite sterilization algicide for recirculated cooling water, it is characterized in that being made up of the raw material of following weight percentage: isothiazolinone 10% ~ 30%, 2,2-bis-bromo-3-nitrilo-propionamide 3% ~ 15%, polyethylene glycol 5% ~ 20%, alpha-bromo-cinnamaldehyde 5% ~ 15%, glutaraldehyde 15% ~ 25%, copper sulphate 0.5% ~ 2%, tannin 3% ~ 10%, surplus is deionized water.
2. the composite sterilization algicide for recirculated cooling water according to claim 1, it is characterized in that being made up of the raw material of following weight percentage: isothiazolinone 15% ~ 25%, 2,2-bis-bromo-3-nitrilo-propionamide 5% ~ 10%, polyethylene glycol 10% ~ 15%, alpha-bromo-cinnamaldehyde 5% ~ 10%, glutaraldehyde 20% ~ 25%, copper sulphate 0.5% ~ 1%, tannin 5% ~ 8%, surplus is deionized water.
3. the composite sterilization algicide for recirculated cooling water according to claim 1, is characterized in that: in isothiazolinone, the ratio of CMIT and MIT is 2:1.
4. the composite sterilization algicide for recirculated cooling water according to claim 1, is characterized in that: active matter content 14% in isothiazolinone.
5. the composite sterilization algicide for recirculated cooling water according to claim 1, is characterized in that: copper sulphate is cupric sulfate pentahydrate.
6. the arbitrary described preparation method for the composite sterilization algicide of recirculated cooling water of claim 1-5, it is characterized in that: first by 2, add in consersion unit after 2-bis-bromo-3-nitrilo-propionamide and alpha-bromo-cinnamaldehyde are dissolved in polyethylene glycol, deionized water, isothiazolinone, copper sulphate, tannin and glutaraldehyde is added successively under stirring condition again at 50 ~ 60 DEG C, stir after 20-50 minute and leave standstill, obtain the composite sterilization algicide for recirculated cooling water.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108378058A (en) * | 2018-03-23 | 2018-08-10 | 山东天庆科技发展有限公司 | A kind of fungicide and preparation method thereof for Used in Seawater Circulating System |
| CN109258668A (en) * | 2018-10-31 | 2019-01-25 | 福州盛世凌云环保科技有限公司 | A kind of high efficiency composition carbendazim Biocidal algae-killing agent and preparation method thereof |
| CN109896601A (en) * | 2019-03-06 | 2019-06-18 | 上海盛安消防工程有限公司 | A kind of fire demand water inorganic agent and its preparation process |
| CN113615712A (en) * | 2021-09-01 | 2021-11-09 | 华能南京燃机发电有限公司 | Bactericide for power plant and preparation method thereof |
| CN114158560A (en) * | 2021-12-15 | 2022-03-11 | 湖南省希润弗高分子新材料有限公司 | Bactericide for industrial cooling water |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108378058A (en) * | 2018-03-23 | 2018-08-10 | 山东天庆科技发展有限公司 | A kind of fungicide and preparation method thereof for Used in Seawater Circulating System |
| CN109258668A (en) * | 2018-10-31 | 2019-01-25 | 福州盛世凌云环保科技有限公司 | A kind of high efficiency composition carbendazim Biocidal algae-killing agent and preparation method thereof |
| CN109896601A (en) * | 2019-03-06 | 2019-06-18 | 上海盛安消防工程有限公司 | A kind of fire demand water inorganic agent and its preparation process |
| CN113615712A (en) * | 2021-09-01 | 2021-11-09 | 华能南京燃机发电有限公司 | Bactericide for power plant and preparation method thereof |
| CN114158560A (en) * | 2021-12-15 | 2022-03-11 | 湖南省希润弗高分子新材料有限公司 | Bactericide for industrial cooling water |
| CN114158560B (en) * | 2021-12-15 | 2023-09-01 | 湖南省希润弗高分子新材料有限公司 | Bactericide for industrial cooling water |
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Application publication date: 20151230 |