CN101928074A - Combinational antisludging agent and preparation method thereof - Google Patents
Combinational antisludging agent and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a combinational antisludging agent, comprising a polymer antisludging agent and an organophosphonic acid antisludging agent, wherein the content of single polymer antisludging agent is 5wt%-95wt%, the content of single organophosphonic acid antisludging agent is 5wt%-95wt% and the content of auxiliary agent is not more than 30wt%; the molecular structure of the single polymer antisludging agent or the molecular structure of the single organophosphonic acid antisludging agent contains an amide group or an amino group, and the single agent containing the amide group or the amino group accounts for 10wt%-100wt% of the total weight of the antisludging agent. The antisludging agent of the invention is widely applied in running of a reverse osmosis membrane, a nanofiltration membrane, an ultrafiltration membrane and the like and plays a role in scale inhibition, thereby achieving the purpose of prolonging the service life and the service cycle of a membrane device and protecting the normal running of the membrane device. The invention has advantages of high scale inhibition efficiency, less adding amount and environmental friendliness.
Description
[technical field]
The present invention relates to a kind of water treatment agent, particularly a kind of Scale inhibitors.
[background technology]
The Chinese patent that the contriver retrieves reverse osmosis membrane antisludging agent has 5 pieces, and 10 pieces in other documents.Scale inhibitors in the patent documentation all is a combinational antisludging agent, moiety has: organic phospho acid compound, xylogen, polymaleic acid or acid anhydride, phosphine carboxylic acid, organic carboxyl acid, amide containing compounds, contain sulfonic group compounds, ether phosphoric acid, phosphorous polymer, dispersant with high efficiency, sterilant, 1,2,4-three carboxyls, 2-phosphonic acid butane, butenoic acid-propenal-Propylene glycol monoacrylate multipolymer, poly aspartic acid, acrylate homopolymer and at least a acrylic copolymer.Wherein, the Scale inhibitors of Chinese patent CN200410103525.4 invention is with the effect that stops the silicon dirt; The Scale inhibitors commute of CN200510077036.0 invention forms the colloidal metal oxide splendid absorption stabilizing power.
CN200410103525.4 relates to a kind of composite scale inhibitor that is used for reverse osmosis system and in the application of reverse osmosis water treatment process, described composite scale inhibitor is made up of acrylate homopolymer and at least a acrylic copolymer.When being used for the reverse osmosis system water treatment, can solve CaSO on the reverse osmosis membrane
4And CaCO
3Deposition problems, have certain stable SiO concurrently
2Performance with silicate.This Scale inhibitors can be at SiO
2Concentration is lower than 30mg/L, effectively prevents the formation of silicon dirt when magnesium ion concentration is lower than 40-58mg/L, but works as SiO
2It is limited that concentration is higher than the 300mg/L scale effect, and scale inhibition performance needs to improve less than 70%.
[summary of the invention]
Be in operation and be subjected to the pollution of pollutent in order to solve film device, generate CaCO on the surface
3, Ca
3(PO
4)
2, CaSO
4, BaSO
4, SrSO
4, sedimental problems such as metal oxide and silicon dirt, the invention provides a kind of multi-functional Scale inhibitors and stop their formation, be particularly suitable for stoping the formation of silicon dirt.
The present invention is by the composite a kind of Scale inhibitors that is prepared from of multiple Scale inhibitors list agent, comprise polymer class Scale inhibitors and organic phosphine acids Scale inhibitors, polymer class scale inhibition list agent 5wt%-95wt% wherein, preferred 20wt%-50wt%, organic phosphine acids Scale inhibitors 5wt%-95wt%, preferred 20wt%-80wt%.And, must contain amide group or amine groups in the molecular structure of list agent of polymeric type Scale inhibitors or the agent of organic phospho acid Scale inhibitors list, single agent of phosphinylidyne-containing amine group or amine groups accounts for the 10wt%-100wt% of gross weight.
The polymer class Scale inhibitors is one or more the mixture (arbitrary proportion) in following: polyacrylic acid, acrylic acid derivative polymkeric substance, vinylformic acid and acrylic acid copolymer derivative thing; Polymaleic acid, maleic acid derivatives polymkeric substance, toxilic acid and maleic acid derivatives multipolymer; Poly-epoxy succinic acid; Polyvinylpyrrolidone, V-Pyrol RC derivative polymer, sulfonated phenylethylene derivative polymer; Poly aspartic acid, the polymkeric substance of aspartame, the multipolymer of aspartic acid and aspartame; Polyacrylamide, the polymkeric substance of acrylamide derivative, acrylamide and acrylamide copolymer derivative etc.
The agent of polymeric type Scale inhibitors list is preferably as follows one or more mixture (arbitrary proportion): polyacrylic acid, acrylic acid derivative polymkeric substance, vinylformic acid and acrylic acid copolymer derivative thing; Polymaleic acid, maleic acid derivatives polymkeric substance, toxilic acid and maleic acid derivatives multipolymer; Poly-epoxy succinic acid; The sulfonated phenylethylene derivative polymer; Poly aspartic acid, the polymkeric substance of aspartame, the multipolymer of aspartic acid and aspartame; Polyacrylamide, the polymkeric substance of acrylamide derivative, acrylamide and acrylamide copolymer derivative etc.
The organic phospho acid Scale inhibitors is one or more the mixture (arbitrary proportion) in following: acetate phosphonic acids, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 1,2,4-three carboxyls, 2-phosphonic acid butane, polyamino polyether base methylenephosphonic acid, Amino Trimethylene Phosphonic Acid, ethylene diamine tetra methylene phosphonic acid, polyvalent alcohol phosphonic acids etc.
The agent of organic phospho acid Scale inhibitors list is preferably as follows one or more mixture (arbitrary proportion): acetate phosphonic acids, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 1,2,4-three carboxyls, 2-phosphonic acid butane, polyamino polyether base methylenephosphonic acid, Amino Trimethylene Phosphonic Acid, ethylene diamine tetra methylene phosphonic acid.
The agent of polymeric type Scale inhibitors list, organic phospho acid Scale inhibitors list agent manufacturer are more, can obtain by the commercial channel.
The list agent of polymeric type Scale inhibitors or the agent of organic phospho acid Scale inhibitors list that contain amide group or amine groups in the molecular structure comprise as follows: the polymkeric substance of the multipolymer of the polymkeric substance of poly aspartic acid, aspartame, aspartic acid and aspartame, polyacrylamide, acrylamide derivative, acrylamide and acrylamide copolymer derivative, polyamino polyether base methylenephosphonic acid, Amino Trimethylene Phosphonic Acid, ethylene diamine tetra methylene phosphonic acid.Wherein, the hydrogen on acid amides or the amido can partly or entirely be substituted.Because the effect of functional groups such as amide group or amine groups has improved the tolerance of Scale inhibitors to silicon greatly.
Except that above-mentioned polymeric type Scale inhibitors list agent and the agent of organic phospho acid Scale inhibitors list, Scale inhibitors of the present invention can also comprise various auxiliary agents.Auxiliary agent can be acid, alkali, alcohol, organic amine etc.Acid is one or more in following: hydrochloric acid, sulfuric acid, nitric acid, formic acid, acetate etc.Alkali is one or more in following: sodium hydroxide, potassium hydroxide, ammonium hydroxide, calcium hydroxide etc.Alcohol is one or more in following: methyl alcohol, ethanol, ethylene glycol, glycerol etc.Organic amine is one or more in following: quadrol, triethylamine, trolamine, polyoxamide etc.When enforcement was of the present invention, the add-on of auxiliary agent was the 0-30wt% of total amount, preferred 5wt%-25wt%.
The pH that bronsted lowry acids and bases bronsted lowry in the auxiliary agent not only can be regulated Scale inhibitors of the present invention regulates the effect of solid content in addition, and bronsted lowry acids and bases bronsted lowry does not generally use simultaneously.Pure and mild organic amine plays the effect that improves resolvability and improve synergistic effect, and pure and mild organic amine can use simultaneously with acid or alkali.
Preferred polymers class scale inhibition list agent 20wt%-60wt% wherein, organic phosphine acids Scale inhibitors 20wt%-80wt%, auxiliary agent 0-30wt%.Special preferred polymers class scale inhibition list agent 20wt%-50wt%, organic phosphine acids Scale inhibitors 20wt%-72.5wt%, auxiliary agent 0-25wt%.
Scale inhibitors of the present invention prepares by the following method: be under 25-95 ℃ the condition in temperature, add Scale inhibitors monomer and auxiliary agent, mix, obtain Scale inhibitors of the present invention after 0.2-9.0 hour.Used water is regulated solid content, is made into the transparent aqueous solution of a kind of solid content 20wt%-60wt%.When concrete enforcement was of the present invention, preferred temperature was: 60-85 ℃; Time is: 0.5-6.0 hour; Solid content 35wt%-55wt%.
The pH of Scale inhibitors of the present invention is 0-12.0, and preferred 1.0-10.0 is preferably 2.0-8.0.
When concrete enforcement was of the present invention, the addition sequence of each Scale inhibitors monomer and auxiliary agent may have certain influence to the outward appearance of Scale inhibitors of the present invention, but scale inhibition effect is not had influence.
Scale inhibitors of the present invention is widely used in the in service of devices such as reverse osmosis membrane, nanofiltration membrane and ultra-filtration membrane, plays the effect of scale inhibition, reaches to prolong film device life-span and life cycle the purpose of the normal operation of protective membrane device.Scale inhibition efficient height not only, and adding less, environmentally friendly.
Contain polymer antisludging agent and organic phospho acid Scale inhibitors in the Scale inhibitors prescription of the present invention, they have molten limit effect.Polymer antisludging agent has dispersion and scale effect, can disperse to become the difficulty soluble salt particulate of difficulty soluble salt nucleus of crystal, also can reduce or control the dirt that is gathered into of difficulty soluble salt, even can also make sedimentary crystal generation lattice distortion, reach the purpose of scale inhibition, can be used for preventing the deposition of lime carbonate, silicate, vitriol and phosphoric acid salt crust etc.The organic phospho acid Scale inhibitors has complexing and scale effect, can control the formation at difficulty soluble salt microcrystallization center by complexing action effectively, also can reduce or control the dirt that is gathered into of difficulty soluble salt, reach the purpose of scale inhibition and dissolving dirt deposition thing, can be used for preventing lime carbonate, silicate, vitriol and phosphoric acid salt dirt deposition.They also have synergistic effect with polymer antisludging agent simultaneously.
Scale inhibitors of the present invention can prevent the formation of silicon dirt effectively.When concentration was 18-20mg/L, silicon dirt scale inhibition performance reached 100%, SiO
2The maximum permitted concentration of concentration is 1000mg/L.Simultaneously can prevent CaCO
3, CaSO
4, Ca
3(PO
4)
2The formation of dirt is applicable to saturation index (LIS)＜6.0, and can prevents BaSO
4, SrSO
4, settling such as metal oxide.
Scale inhibitors of the present invention can satisfy water inlet SiO
2＜200mg/L, the rate of recovery≤80% reverse osmosis unit operating requirement prevent the formation of silicon dirt.Scale inhibitors of the present invention is suitable for saturation index (LIS)＜6.0, and preferred＜4.0 preferably can reach＜2.0-3.0.
Scale inhibitors working concentration of the present invention is 1-100mg/L, below the preferred 1-60mg/L, and 2-30mg/L preferably.Working concentration was 4-100mg/L when Scale inhibitors of the present invention was applied to reverse osmosis unit, below the preferred 4-50mg/L, and 6-30mg/L preferably.
[embodiment]
Below be specifically described from aspects such as the preparation method of Scale inhibitors of the present invention and component, scale-inhibiting properties mensuration, application.
Embodiment 1: the preparation of Scale inhibitors
Scale inhibitors of the present invention prepares in a four-hole boiling flask that heating unit, condensation reflux unit, whipping appts and temperature indicating device be housed.In four-hole boiling flask, add agent of various Scale inhibitors list and auxiliary agent in proportion, treat that solid materials dissolves fully after, can heat to certain temperature, keep certain hour after mixing, stop heating, water is regulated solid content, be cooled to normal temperature, obtain Scale inhibitors of the present invention.
Component example 1
Polymer class Scale inhibitors: vinylformic acid, vinylformic acid formicester and propene sulfonic acid terpolymer 30wt%, the organic phospho acid Scale inhibitors: (solid content is 40% to polyamino polyether base methylenephosphonic acid, effective constituent is more than 35%) 70wt%, reacted 4 hours down at 45 ℃ according to above-mentioned preparation method, obtain product 1.It is 35.0wt% that water is regulated solid content, is called ZGJ1.
Component example 2
The polymer class Scale inhibitors: polyacrylic acid 30wt%, organic phospho acid Scale inhibitors: Amino Trimethylene Phosphonic Acid 70wt% reacted 2.5 hours down at 75 ℃ with above-mentioned preparation method, obtained product 2.It is 40.0wt% that water is regulated solid content, is called ZGJ2.
Component example 3
The polymer class Scale inhibitors: polyacrylic acid 30wt%, organic phospho acid Scale inhibitors: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 15wt%, ethylene diamine tetra methylene phosphonic acid 50wt%, auxiliary agent: polyoxamide 5wt%, reacted 1.5 hours down at 75 ℃ with above-mentioned preparation method, obtain product 3.It is 41.5wt% that water is regulated solid content, is called ZGJ3.
Component example 4
Polymer class Scale inhibitors: phosphorous acrylamide and acrylic copolymer 27.5wt%, organic phospho acid Scale inhibitors: 1,2,4-three carboxyls, 2-phosphonic acid butane 50wt%, auxiliary agent: glycerol 12.5wt%, reacted 1 hour down at 75 ℃ with above-mentioned preparation method, obtain product 4.It is 41.5wt% that water is regulated solid content, is called ZGJ4.
Component example 5
The polymer class Scale inhibitors: aspartic acid polymkeric substance 32.5wt%, the organic phospho acid Scale inhibitors: acetate phosphonic acids 57.5wt%, auxiliary agent: ethylene glycol 10wt%, reacted 3 hours down at 75 ℃ with above-mentioned preparation method, obtain product 5.It is 45wt% that water is regulated solid content, is called ZGJ5.
Component example 6
Polymer class Scale inhibitors: poly-epoxy succinic acid 50wt%, organic phospho acid Scale inhibitors: polyamino polyether base methylenephosphonic acid 25wt%, auxiliary agent: ethylene glycol amine 7.5wt%, sodium hydroxide 17.5wt%, reacted 6 hours down at 75 ℃ with above-mentioned preparation method, obtain product 6.It is 45wt% that water is regulated solid content, is called ZGJ6.
Component example 7
Polymer class Scale inhibitors: the multipolymer 20wt% of sulfonated phenylethylene and toxilic acid, phosphorous acrylamide and acrylic copolymer 20wt%, the organic phospho acid Scale inhibitors: 1,2,4-three carboxyls, 2-phosphonic acid butane 20wt%, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 20wt%, auxiliary agent: quadrol 10wt%, sulfuric acid 10wt%, reacted 3 hours down at 88 ℃ with above-mentioned preparation method, obtain product 7.It is 52wt% that water is regulated solid content, is called ZGJ7.
Component example 8
Polymer class Scale inhibitors: phosphorous acidic group and sulfonic group acrylamide and acrylic copolymer 30.9wt%, organic phospho acid Scale inhibitors: 1,2,4-three carboxyls, 2-phosphonic acid butane 20.6wt%, Amino Trimethylene Phosphonic Acid 41.2wt%, auxiliary agent: sodium hydroxide 7.3wt%, reacted 6 hours down at 83 ℃ with above-mentioned preparation method, obtain product 8.It is 36wt% that water is regulated solid content, is called ZGJ8.
Embodiment 2: scale-inhibiting properties is measured
The mensuration of scale-inhibiting properties is with reference to standard GB/T 16632-1996 " the mensuration tosca method of water conditioner scale-inhibiting properties ".
This method is prepared into test solution to contain difficulty soluble salt ionic water and water treatment agent, behind the elevated temperature, keeps for some time, makes test solution reach its Balance of nature rapidly, measures the steady concentration of calcium ion in the test solution then, calculates scale inhibition performance.
The ability of water conditioner resistance silicon dirt also can be carried out with reference to aforesaid method, measures SiO
2Steady concentration, calculate scale inhibition performance.Scale inhibition performance is bigger, and then the scale-inhibiting properties of water conditioner better.
Test 1
In test water, add Scale inhibitors ZGJ1, after mixing, measure its scale inhibition effect.The calcium ion concn of configuration water is 240mg/L, and magnesium ion concentration is 240mg/L, SiO
2Concentration is 300mg/L, and pH is 8.8, and saturation index (LIS) is 5.9.Scale inhibition effect sees Table 1.
Table 1
| Scale inhibitors concentration, mg/L | 6 | 10 | 14 | 18 | 22 | 26 | 30 |
| Scale inhibition performance/SiO 2，％ | 80 | 90 | 95 | 100 | 100 | 100 | 100 |
| Scale inhibition performance CaCO 3，％ | 41 | 55 | 70 | 83 | 84 | 85 | 85 |
Test 2
In test water, add Scale inhibitors ZGJ4, after mixing, measure its scale inhibition effect.The calcium ion concn of configuration water is 200mg/L, and magnesium ion concentration is 300mg/L, SiO
2Concentration is 500mg/L, and pH is 7.3, and saturation index (LIS) is 3.0.Scale inhibition effect sees Table 2.
Table 2
| Scale inhibitors concentration, mg/L | 6 | 10 | 14 | 18 | 22 | 26 | 30 |
| Scale inhibition performance/SiO 2，％ | 74 | 88 | 95 | 99 | 100 | 100 | 100 |
| Scale inhibition performance CaCO 3，％ | 53 | 65 | 78 | 88 | 90 | 90 | 91 |
Test 3
In test water, add Scale inhibitors ZGJ6, after mixing, measure its scale inhibition effect.The calcium ion concn of configuration water is 240mg/L, and magnesium ion concentration is 260mg/L, SiO
2Concentration is 660mg/L, and pH is 8.3, and saturation index (LIS) is 2.8.Scale inhibition effect sees Table 3.
Table 3
| Scale inhibitors concentration, mg/L | 6 | 10 | 14 | 18 | 22 | 26 | 30 |
| Scale inhibition performance/SiO 2，％ | 50 | 61 | 73 | 80 | 82 | 83 | 84 |
| Scale inhibition performance CaCO 3，％ | 35 | 48 | 68 | 81 | 91 | 91 | 91 |
Test 4
In test water, add Scale inhibitors ZGJ7, after mixing, measure its scale inhibition effect.The calcium ion concn of configuration water is 180mg/L, and magnesium ion concentration is 180mg/L, SiO
2Concentration is 310mg/L, and pH is 7.5, and saturation index (LIS) is 3.5.Scale inhibition effect sees Table 4.
Table 4
| Scale inhibitors concentration, mg/L | 6 | 10 | 14 | 18 | 22 | 26 | 30 |
| Scale inhibition performance/SiO 2，％ | 48 | 75 | 95 | 100 | 100 | 100 | 100 |
| Scale inhibition performance CaCO 3，％ | 46 | 81 | 93 | 93 | 93 | 93 | 93 |
Test 5
In test water, add Scale inhibitors ZGJ8, after mixing, measure its scale inhibition effect.The calcium ion concn of configuration water is 240mg/L, and magnesium ion concentration is 220mg/L, SiO
2Concentration is 830mg/L, and pH is 7.8, and saturation index (LIS) is 2.9.Scale inhibition effect sees Table 5.
Table 5
| Scale inhibitors concentration, mg/L | 6 | 10 | 14 | 18 | 22 | 26 | 30 |
| Scale inhibition performance/SiO 2，％ | 46 | 73 | 81 | 99 | 100 | 100 | 100 |
| Scale inhibition performance CaCO 3，％ | 44 | 76 | 82 | 90 | 91 | 91 | 91 |
Embodiment 3: application example
Example 1
In the reverse osmosis unit operational process at first in the time period of setting with the mode operation of recycle to extinction (dense water and product water all are circulated to into water), membrane element contacts recycle to extinction solution in this time period, the concentration level of composition representative solution under the different rate of recovery of circulate soln; Drain the portioned product water yield then, make into that each ion component concentration is improved accordingly in the water, thereby improve the water recovery level, increase the scaling tendency of incrustation ion in the solution.System's pattern with recycle to extinction in the time period of setting again behind the raising scaling tendency is operated, repeat above operation like this, membrane element is the ever-increasing solution of contacted saturation ratio periodically, and the decline by product discharge and the change of component of solution are estimated the effect of the fouling limit and Scale inhibitors.
Because the scale inhibition effect difference of different Scale inhibitorss, the maximum recovery difference that can reach can be judged the scale inhibition effect of Scale inhibitors fast with this.
At single only 2540 films (membrane area 2.6m
2) reverse osmosis unit on, with membrane flux 20-22L/m
2, be the water source with the Huanghe water, the rate of recovery 50%, 60%, 66.6%, 75%, 80%, 85%, 87.5%, 90% is used the Scale inhibitors 6.0mg/L that invents, and does not regulate the operation naturally of pH.
Before the reverse osmosis membrane and dense water wall pressure in each backflow section pressure-stabilisation, pressure difference maintains 0.02MPa.Improve accordingly with the rate of recovery, pressure increases to some extent.The rate of recovery is identical less than 80% pressure amplitude, and the rate of recovery rises rapidly greater than 85% pressure, reaches the fouling zone.
During the rate of recovery 80%, the amount of scale buildup of calcium is very little, and the rate of recovery rises rapidly greater than 85% pressure, reaches the fouling zone, and is consistent with the judgement of pressure change.
The rate of recovery is 80% when following, and operating pressure changes little, and amount of scale buildup is little simultaneously, and the scale inhibition effect of Scale inhibitors is good.
Example 2
At processing power 75m
3On two sections reverse osmosis units of the one-level of/h, be the water source with the Huanghe water, the rate of recovery 75% is used the Scale inhibitors 3.0-5.0mg/L that invents, and does not regulate the operation naturally of pH.
Reverse osmosis unit import export pressure-stabilisation, intersegmental pressure difference are also very stable, remain on below the 0.2MPa.Do not have considerable change at whole viewing duration, even pressure reduction diminishes also, promptly Scale inhibitors is very effective in this section, and the device running status is good.
It is stable that device produces the quality maintenance in the whole service process, and water quality is good, and ratio of desalinization is stabilized in more than 99%.
Claims (10)
1. combinational antisludging agent, comprise list agent of polymer class scale inhibition and the agent of organic phosphine acids scale inhibition list, polymer class scale inhibition list agent 5wt%-95wt% wherein, organic phosphine acids scale inhibition list agent 5wt%-95wt%, and contain amide group or amine groups in the molecular structure of list agent of polymeric type Scale inhibitors or the agent of organic phospho acid Scale inhibitors list, single agent of phosphinylidyne-containing amine group or amine groups accounts for the 10wt%-100wt% of Scale inhibitors gross weight.
2. Scale inhibitors according to claim 1, wherein the polymer class Scale inhibitors is one or more the mixture in following: polyacrylic acid, acrylic acid derivative polymkeric substance, vinylformic acid and acrylic acid copolymer derivative thing; Polymaleic acid, maleic acid derivatives polymkeric substance, toxilic acid and maleic acid derivatives multipolymer; Poly-epoxy succinic acid; Polyvinylpyrrolidone, V-Pyrol RC derivative polymer, sulfonated phenylethylene derivative polymer; Poly aspartic acid, the polymkeric substance of aspartame, the multipolymer of aspartic acid and aspartame; Polyacrylamide, the polymkeric substance of acrylamide derivative, acrylamide and acrylamide copolymer derivative.
3. Scale inhibitors according to claim 2, wherein the agent of polymeric type Scale inhibitors list is selected from as follows: polyacrylic acid, acrylic acid derivative polymkeric substance, vinylformic acid and acrylic acid copolymer derivative thing; Polymaleic acid, maleic acid derivatives polymkeric substance, toxilic acid and maleic acid derivatives multipolymer; Poly-epoxy succinic acid; The sulfonated phenylethylene derivative polymer; Poly aspartic acid, the polymkeric substance of aspartame, the multipolymer of aspartic acid and aspartame; Polyacrylamide, the polymkeric substance of acrylamide derivative, acrylamide and acrylamide copolymer derivative.
4. Scale inhibitors according to claim 1, wherein the organic phospho acid Scale inhibitors is one or more the mixture in following: acetate phosphonic acids, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 1,2,4-three carboxyls, 2-phosphonic acid butane, polyamino polyether base methylenephosphonic acid, Amino Trimethylene Phosphonic Acid, ethylene diamine tetra methylene phosphonic acid, polyvalent alcohol phosphonic acids.
5. Scale inhibitors according to claim 4, wherein the agent of organic phospho acid Scale inhibitors list is selected from as follows: acetate phosphonic acids, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 1,2,4-three carboxyls, 2-phosphonic acid butane, polyamino polyether base methylenephosphonic acid, Amino Trimethylene Phosphonic Acid, ethylene diamine tetra methylene phosphonic acid.
6. Scale inhibitors according to claim 1, the list agent of polymeric type Scale inhibitors or the agent of organic phospho acid Scale inhibitors list that wherein contain amide group or amine groups in the molecular structure comprise as follows: the polymkeric substance of the multipolymer of the polymkeric substance of poly aspartic acid, aspartame, aspartic acid and aspartame, polyacrylamide, acrylamide derivative, acrylamide and acrylamide copolymer derivative, polyamino polyether base methylenephosphonic acid, Amino Trimethylene Phosphonic Acid, ethylene diamine tetra methylene phosphonic acid.
7. Scale inhibitors according to claim 1, except that above-mentioned polymeric type Scale inhibitors list agent and the agent of organic phospho acid Scale inhibitors list, also comprise various auxiliary agents, wherein polymer class scale inhibition list agent 20wt%-60wt%, organic phosphine acids Scale inhibitors 20wt%-80wt%, auxiliary agent≤30wt%.
8. Scale inhibitors according to claim 7, polymer class scale inhibition list agent 20wt%-50wt% wherein, organic phosphine acids Scale inhibitors 20wt%-72.5wt%, auxiliary agent≤25wt%.
9. the preparation method of the described Scale inhibitors of above arbitrary claim, comprise the steps: under temperature is 25-95 ℃ condition, add Scale inhibitors monomer and auxiliary agent, mix, react and get final product after 0.2-9.0 hour, used water is regulated solid content, makes the transparent aqueous solution of solid content 20wt%-60wt%.
10. preparation method according to claim 9, wherein temperature is: 60-85 ℃; Time is: 0.5-6.0 hour; Solid content 35wt%-55wt%.
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