CN104906961B - Reverse osmosis antisludging agent - Google Patents
Reverse osmosis antisludging agent Download PDFInfo
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- CN104906961B CN104906961B CN201510302090.4A CN201510302090A CN104906961B CN 104906961 B CN104906961 B CN 104906961B CN 201510302090 A CN201510302090 A CN 201510302090A CN 104906961 B CN104906961 B CN 104906961B
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Abstract
The invention discloses novel reverse osmosis antisludging agent, the raw material according to parts by weight includes: 2-8 parts of sodium citrate, 33-45 parts of hydrolysis of polymaleic anhydride, 28-37 parts of polyepoxysuccinic acid salt, 9-15 parts of methenamine, 13-20 parts of polylactic acid, 40-50 parts of water；By in the water investment reaction kettle of sodium citrate, hydrolysis of polymaleic anhydride, polyepoxysuccinic acid salt, methenamine and half quality, it is warming up to 40-50 DEG C, stirring and dissolving is uniform；The remaining water of polylactic acid is dissolved；Material in reactor is warming up to 70-75 DEG C, PLA solution is added dropwise, after being added dropwise, keeps the temperature 3-4h；Be cooled to room temperature to get.Scale inhibition efficiency of the present invention is up to 95%, adding less, environmentally friendly, property stabilization, and Storage period is long.The problems such as reverse osmosis antisludging agent based on external product, processing capacity is limited in the prior art, and synthesis is complicated, and production cost is higher is solved simultaneously.
Description
Technical field
The present invention relates to a kind of antisludging agent, specifically novel reverse osmosis antisludging agent.
Background technique
With the progress of membrane science technique, Reverse Osmosis Water Treatment Technology is widely used to electric power, food, electronics, chemical industry
Industry has a wide range of applications in industrial water supply and reusing sewage advanced treating field.Reverse osmosis equipment is in During Process of Long-term Operation
In, since the various ion concentrations of concentrated water are higher, it are easy to produce scale, and breed bacterium algae, cause the blocking of film, influence reverse osmosis
The stable operation of system.Film fouling and growth bacterium algae can be such that equipment producing water ratio declines and cause energy waste, will be more when serious
Membrane component is changed, membrane component is the main component of counter-infiltration system, expensive.Therefore prevent film fouling and bacterium algae from breeding in reverse osmosis
It is played a crucial role in operation thoroughly.Current main reverse osmosis antisludging agent have Kinglee company of the U.S., Argo company,
The product of FMC Corp., there are also homemade goods, and properties of product are irregular, and scale-inhibiting properties are not high, only 70~80%.
Summary of the invention
The purpose of the present invention is to provide scale inhibitions high-efficient, adding less, environment amenable novel reverse osmosis antisludging agent,
To solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
Novel reverse osmosis antisludging agent, the raw material according to parts by weight include: 2-8 parts of sodium citrate, hydrolysis of polymaleic anhydride 33-
45 parts, 28-37 parts of polyepoxysuccinic acid salt, 9-15 parts of methenamine, 13-20 parts of polylactic acid, 40-50 parts of water；
Specific steps when preparation include:
(1) it feeds intake: by sodium citrate, hydrolysis of polymaleic anhydride, polyepoxysuccinic acid salt, methenamine and half quality
Water investment reaction kettle in, be warming up to 40-50 DEG C, stirring and dissolving is uniform；
(3) it dissolves: the remaining water of polylactic acid is dissolved；
(4) it is added dropwise: material in reactor being warming up to 70-75 DEG C, PLA solution is added dropwise, coutroi velocity makes polylactic acid
Solution drips off simultaneously, time for adding 5-6h；
(5) it keeps the temperature: after PLA solution is added dropwise, keeping the temperature 3-4h；
(6) be cooled to room temperature to get.
As a further solution of the present invention: the novel reverse osmosis antisludging agent, the raw material according to parts by weight include: lemon
Sour sodium 3-7 parts, 36-42 parts of hydrolysis of polymaleic anhydride, 30-35 parts of polyepoxysuccinic acid salt, 11-14 parts of methenamine, polylactic acid
15-18 parts, 42-48 parts of water.
As a further solution of the present invention: the novel reverse osmosis antisludging agent, the raw material according to parts by weight include: lemon
Sour sodium 4-6 parts, 38-40 parts of hydrolysis of polymaleic anhydride, 32-33 parts of polyepoxysuccinic acid salt, 12-13 parts of methenamine, polylactic acid
16-17 parts, 44-46 parts of water.
As a further solution of the present invention: the novel reverse osmosis antisludging agent, the raw material according to parts by weight include: lemon
5 parts of sour sodium, 39 parts of hydrolysis of polymaleic anhydride, 32.5 parts of polyepoxysuccinic acid salt, 12.5 parts of methenamine, 16.5 parts of polylactic acid,
45 parts of water.
Compared with prior art, the beneficial effects of the present invention are:
Sodium citrate has following excellent performance: (1) safe and non-toxic performance in the present invention.Due to preparing the original of sodium citrate
Material basic source is in grain, thus it is reliable to be perfectly safe, and will not generate harm to human health.The United Nations grain farmer and world health
Tissue is not intended to be limited in any its daily intake, it is believed that the product belong to No Poison.(2) there is biological degradability.Citric acid
Sodium partially becomes citric acid, the two coexists in same system after a large amount of water dilution of nature.Citric acid passes through in water
Oxygen, heat, light, bacterium and the effect of microorganism, it is easy to biodegrade occur.It is usually through aconitic acid, clothing that it, which decomposes approach,
Health acid, citraconic anhydride, are changed into carbon dioxide and water.(3) there is complexing of metal ion ability.Sodium citrate is to Ca2+, Mg2+
Equal metal ions have good complexing power, also have good complexing power to other metal ions, such as Fe2+ plasma.
(4) fabulous solubility property, and dissolubility increases with water temperature and is increased.(5) there is good pH adjusting and cushion performance.Lemon
Lemon acid sodium is a kind of weak acid strong alkali salt, constitutes stronger pH buffer with compatibility of citric acid, therefore to be not suitable for pH big certain
The occasion of range has its important use.In addition, sodium citrate also has excellent retarding performance and stability.
Hydrolysis of polymaleic anhydride (HPMA) is a kind of low molecular weight polyelectrolyte, and general relative molecular weight is 400~800,
Nontoxic, soluble easily in water, chemical stability and thermal stability are high, and decomposition temperature is at 330 DEG C or more.In high temperature (< 350 DEG C) and high pH
Under have apparent threshold effect.HPMA is suitable for alkaline water quality or is used in compounding with other medicines.HPMA is at 300 DEG C or less to carbon
Hydrochlorate still has good antiscaling dispersion effect, and the scale inhibition time is up to 100h.Since HPMA scale-inhibiting properties and high temperature resistance are excellent,
Therefore in the flash distillation plant of sea water desalination and low-pressure boiler, steam locomotive, crude oil dehydration, water delivery petroleum pipeline and industrial cycle
It is used widely in cooling water.In addition HPMA has certain corrosion inhibition, more preferable with zinc salt compounding effect.
Poly-epoxy succinic acid (PESA) is a kind of nitrogen-free, non-phosphorus organic compound, has both scale inhibitor double effects, biology
High-alkali, high metal content water system is got well and be suitable for degradation property, is a kind of green Water Treatment Chemicals.The main scale inhibition machine of PESA
Manage as follows: 1) the amount of activated group in chelation antisludging agent has certain chelating ability to scaling cations, and chela has occurred
Cooperation is used, so can block part scaling cations after PESA is added, inhibits its reacting with anion, to prevent fouling.
2) medicament that low dose effect refers to plus people is much lower with respect to the cation concn of fouling components in water, that is, can inhibit largely into dirt.
The crystallization of ion, the shown scale inhibition effect come out.This is because existing in supersaturated solution and being largely less than critical half
The small crystals dirt of diameter, since the antisludging agent being added has special adsorption energy to the active site of nucleus and crystal in small crystals
Power, and can be adsorbed on above, interface is enable to greatly increase by physically or chemically acting on, interface can be higher, and critical the half of crystal
Diameter is bigger, small crystals be precipitated from water it is more difficult, thus realize macroscopic view low dose effect.3) distortion of lattice acts on crystal
In growth, lattice is grown in the kinking position of crystal first, and kinking position is that most stable of position works as on grain boundary
When solution is supersaturated liquid, the probability that slightly soluble molecules of salt reaches kinking position is maximum, thus crystal can normally be grown；And when molten
There are antisludging agents in liquid, will be adsorbed on crystal kinking position, occupy the lattice position of crystal normal growth, and crystal is inhibited to have rule
Rule growth, so that the regularity of big havoc crystallization, makes lattice deformability.It is difficult due to the crystal shape very irregular being distorted
It also can only be loose soft dirt, to reach scale inhibition even if generating dirty block to form hard dirty block by orderly close-packed arrays
Purpose.The corrosion inhibition of PESA: when PESA is used alone, lower dosage has certain corrosion inhibition to carbon steel.With
The increase of PESA concentration, corrosion inhibition also enhance, and the corrosion rate of carbon steel gradually decreases, and corrosion inhibition rate increases.To reach compared with
Good corrosion mitigating effect, the mass concentration of required PESA are higher.
Polylactic acid (PLA) is a kind of novel biodegradation material, is mentioned using reproducible plant resources (such as corn)
Starch raw material out is made.Starch raw material obtains glucose via saccharification, then height is made by glucose and certain strain fermentation
The lactic acid of purity, then the polylactic acid by chemical synthesis process synthesis certain molecular weight.Its with good biodegradability,
Can be degradable by microorganism in nature after use, carbon dioxide and water are ultimately generated, free from environmental pollution, this is to protection environment
It is highly beneficial.Compatibility is good with degradability.
Scale inhibition efficiency of the present invention is up to 95%, adding less, environmentally friendly, property stabilization, and Storage period is long.It solves simultaneously
For reverse osmosis antisludging agent based on external product, processing capacity is limited in the prior art, and synthesis is complicated, and production cost is higher etc. asks
Topic.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, novel reverse osmosis antisludging agent weighs following raw materials according: sodium citrate 2kg, hydrolyzed polymaleic anhydride
Acid anhydride 33kg, polyepoxysuccinic acid salt 28kg, methenamine 9kg, polylactic acid 13kg, water 40kg.
Specific steps when preparation include:
(1) it feeds intake: by sodium citrate, hydrolysis of polymaleic anhydride, polyepoxysuccinic acid salt, methenamine and half quality
Water investment reaction kettle in, be warming up to 40 DEG C, stirring and dissolving is uniform；
(3) it dissolves: the remaining water of polylactic acid is dissolved；
(4) it is added dropwise: material in reactor being warming up to 70 DEG C, PLA solution is added dropwise, coutroi velocity makes PLA solution
It drips off simultaneously, time for adding 5h；
(5) it keeps the temperature: after PLA solution is added dropwise, keeping the temperature 3h；
(6) be cooled to room temperature to get.
Embodiment 2
In the embodiment of the present invention, novel reverse osmosis antisludging agent weighs following raw materials according: sodium citrate 8kg, hydrolyzed polymaleic anhydride
Acid anhydride 45kg, polyepoxysuccinic acid salt 37kg, methenamine 15kg, polylactic acid 20kg, water 50kg.
Specific steps when preparation include:
(1) it feeds intake: by sodium citrate, hydrolysis of polymaleic anhydride, polyepoxysuccinic acid salt, methenamine and half quality
Water investment reaction kettle in, be warming up to 50 DEG C, stirring and dissolving is uniform；
(3) it dissolves: the remaining water of polylactic acid is dissolved；
(4) it is added dropwise: material in reactor being warming up to 75 DEG C, PLA solution is added dropwise, coutroi velocity makes PLA solution
It drips off simultaneously, time for adding 6h；
(5) it keeps the temperature: after PLA solution is added dropwise, keeping the temperature 4h；
(6) be cooled to room temperature to get.
Embodiment 3
In the embodiment of the present invention, novel reverse osmosis antisludging agent weighs following raw materials according: sodium citrate 3kg, hydrolyzed polymaleic anhydride
Acid anhydride 36kg, polyepoxysuccinic acid salt 30kg, methenamine 11kg, polylactic acid 15kg, water 42kg.
Specific steps when preparation include:
(1) it feeds intake: by sodium citrate, hydrolysis of polymaleic anhydride, polyepoxysuccinic acid salt, methenamine and half quality
Water investment reaction kettle in, be warming up to 42 DEG C, stirring and dissolving is uniform；
(3) it dissolves: the remaining water of polylactic acid is dissolved；
(4) it is added dropwise: material in reactor being warming up to 71 DEG C, PLA solution is added dropwise, coutroi velocity makes PLA solution
It drips off simultaneously, time for adding 5.2h；
(5) it keeps the temperature: after PLA solution is added dropwise, keeping the temperature 3.2h；
(6) be cooled to room temperature to get.
Embodiment 4
In the embodiment of the present invention, in the embodiment of the present invention, novel reverse osmosis antisludging agent weighs following raw materials according: sodium citrate
7kg, hydrolysis of polymaleic anhydride 42kg, polyepoxysuccinic acid salt 35kg, methenamine 14kg, polylactic acid 18kg, water 48kg.
Specific steps when preparation include:
(1) it feeds intake: by sodium citrate, hydrolysis of polymaleic anhydride, polyepoxysuccinic acid salt, methenamine and half quality
Water investment reaction kettle in, be warming up to 48 DEG C, stirring and dissolving is uniform；
(3) it dissolves: the remaining water of polylactic acid is dissolved；
(4) it is added dropwise: material in reactor being warming up to 74 DEG C, PLA solution is added dropwise, coutroi velocity makes PLA solution
It drips off simultaneously, time for adding 5.8h；
(5) it keeps the temperature: after PLA solution is added dropwise, keeping the temperature 3.8h；
(6) be cooled to room temperature to get.
Embodiment 5
In the embodiment of the present invention, novel reverse osmosis antisludging agent weighs following raw materials according: sodium citrate 4kg, hydrolyzed polymaleic anhydride
Acid anhydride 38kg, polyepoxysuccinic acid salt 32kg, methenamine 12kg, polylactic acid 16kg, water 44kg.
Specific steps when preparation include:
(1) it feeds intake: by sodium citrate, hydrolysis of polymaleic anhydride, polyepoxysuccinic acid salt, methenamine and half quality
Water investment reaction kettle in, be warming up to 44 DEG C, stirring and dissolving is uniform；
(3) it dissolves: the remaining water of polylactic acid is dissolved；
(4) it is added dropwise: material in reactor being warming up to 72 DEG C, PLA solution is added dropwise, coutroi velocity makes PLA solution
It drips off simultaneously, time for adding 5.4h；
(5) it keeps the temperature: after PLA solution is added dropwise, keeping the temperature 3.4h；
(6) be cooled to room temperature to get.
Embodiment 6
In the embodiment of the present invention, in the embodiment of the present invention, novel reverse osmosis antisludging agent weighs following raw materials according: sodium citrate
6kg, hydrolysis of polymaleic anhydride 40kg, polyepoxysuccinic acid salt 33kg, methenamine 13kg, polylactic acid 17kg, water 46kg.
Specific steps when preparation include:
(1) it feeds intake: by sodium citrate, hydrolysis of polymaleic anhydride, polyepoxysuccinic acid salt, methenamine and half quality
Water investment reaction kettle in, be warming up to 46 DEG C, stirring and dissolving is uniform；
(3) it dissolves: the remaining water of polylactic acid is dissolved；
(4) it is added dropwise: material in reactor being warming up to 73 DEG C, PLA solution is added dropwise, coutroi velocity makes PLA solution
It drips off simultaneously, time for adding 5.6h；
(5) it keeps the temperature: after PLA solution is added dropwise, keeping the temperature 3.6h；
(6) be cooled to room temperature to get.
Embodiment 7
In the embodiment of the present invention, novel reverse osmosis antisludging agent weighs following raw materials according: sodium citrate 5kg, hydrolyzed polymaleic anhydride
Acid anhydride 39kg, polyepoxysuccinic acid salt 32.5kg, methenamine 12.5kg, polylactic acid 16.5kg, water 45kg.
Specific steps when preparation include:
(1) it feeds intake: by sodium citrate, hydrolysis of polymaleic anhydride, polyepoxysuccinic acid salt, methenamine and half quality
Water investment reaction kettle in, be warming up to 45 DEG C, stirring and dissolving is uniform；
(3) it dissolves: the remaining water of polylactic acid is dissolved；
(4) it is added dropwise: material in reactor being warming up to 72 DEG C, PLA solution is added dropwise, coutroi velocity makes PLA solution
It drips off simultaneously, time for adding 5.5h；
(5) it keeps the temperature: after PLA solution is added dropwise, keeping the temperature 3.5h；
(6) be cooled to room temperature to get.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (4)
1. reverse osmosis antisludging agent, which is characterized in that the raw material according to parts by weight includes: 2-8 parts of sodium citrate, hydrolyzed polymaleic anhydride
33-45 parts of acid anhydride, 28-37 parts of polyepoxysuccinic acid salt, 9-15 parts of methenamine, 13-20 parts of polylactic acid, 40-50 parts of water；
Specific steps when preparation include:
(1) it feeds intake: by the water of sodium citrate, hydrolysis of polymaleic anhydride, polyepoxysuccinic acid salt, methenamine and half quality
It puts into reaction kettle, is warming up to 40-50 DEG C, stirring and dissolving is uniform；
(3) it dissolves: the remaining water of polylactic acid is dissolved；
(4) it is added dropwise: material in reactor being warming up to 70-75 DEG C, PLA solution is added dropwise, coutroi velocity makes PLA solution
It drips off simultaneously, time for adding 5-6h；
(5) it keeps the temperature: after PLA solution is added dropwise, keeping the temperature 3-4h；
(6) be cooled to room temperature to get.
2. reverse osmosis antisludging agent according to claim 1, which is characterized in that the raw material according to parts by weight includes: citric acid
3-7 parts of sodium, 36-42 parts of hydrolysis of polymaleic anhydride, 30-35 parts of polyepoxysuccinic acid salt, 11-14 parts of methenamine, polylactic acid 15-
18 parts, 42-48 parts of water.
3. reverse osmosis antisludging agent according to claim 2, which is characterized in that the raw material according to parts by weight includes: citric acid
4-6 parts of sodium, 38-40 parts of hydrolysis of polymaleic anhydride, 32-33 parts of polyepoxysuccinic acid salt, 12-13 parts of methenamine, polylactic acid 16-
17 parts, 44-46 parts of water.
4. reverse osmosis antisludging agent according to claim 3, which is characterized in that the raw material according to parts by weight includes: citric acid
5 parts of sodium, 39 parts of hydrolysis of polymaleic anhydride, 32.5 parts of polyepoxysuccinic acid salt, 12.5 parts of methenamine, 16.5 parts of polylactic acid, water
45 parts.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105417736A (en) * | 2015-12-21 | 2016-03-23 | 常州市精尔锐工具制造有限公司 | Environment-friendly reverse osmosis scale inhibitor |
| CN106237866A (en) * | 2016-08-29 | 2016-12-21 | 山东胜伟园林科技有限公司 | A kind of salt-soda soil reverse osmosis antisludging agent and preparation method thereof |
| CN108176238A (en) * | 2018-03-02 | 2018-06-19 | 电子科技大学中山学院 | Reverse osmosis scale inhibitor suitable for chemical production |
| CN111495193A (en) * | 2019-05-16 | 2020-08-07 | 河北权科环保科技有限公司 | Reverse osmosis membrane repairing reagent and preparation method and application thereof |
| CN111018139B (en) * | 2019-11-15 | 2020-10-13 | 嘉兴沃特泰科环保科技股份有限公司 | Preparation method of non-phosphorus scale inhibitor and filtering device thereof |
| CN113522025A (en) * | 2021-08-17 | 2021-10-22 | 新疆水处理工程技术研究中心有限公司 | Reverse osmosis scale inhibitor and preparation method thereof |
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| CN101817597A (en) * | 2010-01-25 | 2010-09-01 | 夏光甫 | Descaling liquid for circulating-water in thermal power plant and preparation method thereof |
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| CN102851672A (en) * | 2012-09-25 | 2013-01-02 | 海尔科化工程塑料国家工程研究中心股份有限公司 | Special antiscaling agent for water heater |
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| CN101817597A (en) * | 2010-01-25 | 2010-09-01 | 夏光甫 | Descaling liquid for circulating-water in thermal power plant and preparation method thereof |
| CN102786158A (en) * | 2011-05-20 | 2012-11-21 | 中国石油化工股份有限公司 | Corrosion-inhibition scale inhibitor composition and corrosion-inhibition scale inhibitor and application thereof |
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