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Terpolymer concentration slow-release anti-sludging agent and method of preparation thereof

A technology of terpolymer and antiscalant, which is applied in chemical instruments and methods, descaling and water softening, and special treatment targets, etc., can solve problems such as hidden dangers of environmental pollution, eutrophication of water bodies, and short timeliness, and achieve Solve environmental pollution problems, improve scale inhibition performance, and have long-lasting effects

Inactive Publication Date: 2017-08-11
成都云图控股股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a ternary polymerization solution in order to solve the problems in the known technology that the existing scale inhibitors are likely to cause eutrophication of water bodies, have certain hidden dangers to environmental pollution, poor dispersion, low scale inhibition rate and short timeliness. Concentrated scale inhibitor and preparation method thereof

Method used

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  • Terpolymer concentration slow-release anti-sludging agent and method of preparation thereof
  • Terpolymer concentration slow-release anti-sludging agent and method of preparation thereof
  • Terpolymer concentration slow-release anti-sludging agent and method of preparation thereof

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Embodiment 1

[0029] Step 1, 14.7g maleic anhydride is formulated into a 25% aqueous solution, 0.134g ferric ammonium sulfate is formulated into a 3% aqueous solution, the maleic anhydride is dissolved in water and poured into the reactor, and then the ferric ammonium sulfate aqueous solution is poured into the reactor , turn on the stirring to make it evenly mixed;

[0030] Step 2: Weigh 30% aqueous solution prepared by 0.224g of ammonium persulfate, then drop the ammonium persulfate solution and 3.6g of acrylic acid into the reactor at the same time, raise the temperature to 95°C, and start the reflux reaction for 1.5h;

[0031] Step 3: Weigh 4.14g of 2-acrylamide-2-methylpropanesulfonic acid to prepare a 30% aqueous solution, then slowly drop the solution into the reaction system of Step 2, and reflux at 95°C for 1 hour;

[0032] Step 4: Add 0.45 g of polyvinyl alcohol to the reaction system in Step 3, stir to dissolve, then concentrate and dry to obtain a terpolymer concentrated scale i...

Embodiment 2

[0035] Step 1, 29.4g maleic anhydride is formulated into a 50% aqueous solution, 0.387g ferric ammonium sulfate is formulated into a 10% aqueous solution, the maleic anhydride is dissolved in water and poured into the reactor, and then the ferric ammonium sulfate aqueous solution is poured into the reactor , turn on the stirring to make it evenly mixed;

[0036] Step 2: Weigh 60% aqueous solution prepared by 6.45g of ammonium persulfate, then drop the ammonium persulfate solution and 14.4g of acrylic acid into the reactor at the same time, raise the temperature to 50°C, and start the reflux reaction for 5h;

[0037] Step 3: Weigh 20.7g of 2-acrylamide-2-methylpropanesulfonic acid to prepare a 30% aqueous solution, then slowly drop the solution into the reaction system of Step 2, and react under reflux at 50°C for 4h;

[0038] Step 4: Add 3.225 g of polyvinyl alcohol to the reaction system in Step 3, stir to dissolve, then concentrate and dry to obtain a terpolymer concentrated...

Embodiment 3

[0041] Step 1, 22.0g maleic anhydride is formulated into a 40% aqueous solution, 0.260g ferric ammonium sulfate is formulated into a 6% aqueous solution, the maleic anhydride is dissolved in water and poured into the reactor, and then the ferric ammonium sulfate aqueous solution is poured into the reactor , turn on the stirring to make it evenly mixed;

[0042] Step 2, weigh 3.22g of ammonium persulfate to prepare a 45% aqueous solution, then drop the ammonium persulfate solution and 9.0g of acrylic acid into the reactor at the same time, raise the temperature to 70°C, and start the reflux reaction for 2.5h;

[0043] Step 3: Weigh 10.12g of 2-acrylamide-2-methylpropanesulfonic acid to prepare a 40% aqueous solution, then slowly drop the solution into the reaction system of Step 2, and reflux at 70°C for 1 hour;

[0044] Step 4: Add 1.45 g of polyvinyl alcohol to the reaction system in Step 3, stir to dissolve, then concentrate and dry to obtain a terpolymer concentrated scale ...

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Abstract

The invention discloses a terpolymer concentration slow-release anti-sludging agent and a method of preparation thereof, the molecular formula of the terpolymer is related in the application. The method of preparation of the terpolymer concentration slow-release anti-sludging agent comprises the steps that, step one, maleic anhydride is prepared into an aqueous solution, and a catalyst aqueous solution is joined; step two, acrylic acid and ammonium persulfate aqueous solution are slowly added in the system prepared of step one, and warming reflux is begun; step three, after the reactivity in step two is completed, 2-acrylamide-2-methyl propane sulfonic acid solution is slowly added in the reaction system of step two, reflux reactivity is continued by the up-keeping of the temperature in step two; step four, after the reactivity of step three is completed, polyvinyl alcohol is added, the solution is stirred to the status of dissolution, the reaction liquid is put in a baking oven and dried, the product is obtained. By the terpolymer concentration slow-release anti-sludging agent, better antiscale performance is provided, at the same time the release rate is controllable, and long-term efficacy is provided.

Description

technical field [0001] The invention relates to the field of water treatment chemicals, in particular to a terpolymer concentrated slow-release scale inhibitor and a preparation method thereof. Background technique [0002] At present, the green and high efficiency of water treatment scale inhibitor products have become the development direction of scale inhibitor products. At present, organic phosphoric acid, organic polyphosphonic acid and their salts are the most widely used scale inhibitors, such as HEDP, ATMP, PBTCA and other ammonium Salt products. [0003] In recent years, more and more attention has been paid to the development of carboxylic acid copolymer scale inhibitors, but the existing carboxylic acid copolymer scale inhibitors use organic solvents as monomers in the reaction process, especially when maleic anhydride is used as monomer. In the liquid phase, there are disadvantages such as large environmental pollution and high cost, and in the process of use, t...

Claims

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Application Information

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IPC IPC(8): C02F5/12C08F222/06C08F220/06C08F220/58
CPCC02F5/12C02F2303/22C08F222/06C08F220/06C08F220/585
Inventor 柏万文阎应广张军陈小飞
Owner 成都云图控股股份有限公司
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