Anti-antisludging disperser and preparation method thereof

A technology of scale inhibitor and dispersant and initiator, which is applied in chemical instruments and methods, scale removal and water softening, osmosis/dialysis water/sewage treatment, etc. It can solve the problems of increased difficulty in sterilization and algae, membrane clogging, circulating water equipment, etc. Corrosion and other problems, to achieve the effect of excellent calcium carbonate scale inhibition function, excellent dispersion of iron oxide, efficient scale inhibition and dispersion performance

Active Publication Date: 2008-05-28
OCHEMATE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organic phosphonic acid (salt) not only inhibits scale and disperses inorganic scale, but also provides rich nutrients for bacteria and algae in water, which makes it more difficult to kill bacteria and algae in the water treatment process. The clogging and pollution of the membrane, the slime caused by bacteria will aggravate the corrosion of circulating water equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add sodium hypophosphite (analytical pure) 4.3g and 70g deionized water in the four-necked flask that stirrer, reflux condenser, constant pressure dropping funnel and thermometer are housed, begin to start stirring temperature rise device, make sodium hypophosphite Fully dissolve. At a temperature of 100°C, add dropwise a solution containing 3.4g of ammonium persulfate and 19g of water, and simultaneously add dropwise acrylic acid, acrylamide, vinylsulfonic acid (purchased from Shanghai Changguang Enterprise Development Co., Ltd., 99% content) mixed aqueous solution ( Acrylic acid 60.8g, acrylamide 12.2g, vinylsulfonic acid: 12.2g, deionized water: 50g water), heat preservation reaction for 1 hour after the dropwise addition, and cool to obtain the product. The polymerization rate of the product is 98.8%, the total solid content is 42.05%, and the pH of the 10% solution is 1.67.

Embodiment 2

[0022] Add sodium hypophosphite (analytical pure) 5.8g and 95g deionized water in the four-necked flask that agitator, reflux condenser, constant pressure dropping funnel and thermometer are housed, begin to start stirring temperature-raising device, make sodium hypophosphite Fully dissolve. At a temperature of 90°C, a solution containing 4.9 g of ammonium persulfate and 27 g of water was added dropwise, and a mixed aqueous solution of acrylic acid, acrylamide, and vinyl sulfonic acid (acrylic acid 11.7 g, acrylamide 35.2 g, vinyl sulfonic acid: 35.2 g, deionized water: 48g water), insulation reaction 2 hours after completion of the dropwise addition, cooling to obtain the product. The polymerization rate of the product is 98.4%, the total solid content is 36.98%, and the pH of the 10% solution is 2.56.

Embodiment 3

[0024] Add sodium hypophosphite (analytical pure) 6.5g and 107g deionized water in the four-necked flask that agitator, reflux condenser, constant pressure dropping funnel and thermometer are housed, start to start stirring temperature-raising device, make sodium hypophosphite Fully dissolve. At a temperature of 75°C, a solution containing 5.7 g of ammonium persulfate and 31 g of water was added dropwise, and a mixed aqueous solution of acrylic acid, acrylamide, and vinyl sulfonic acid (acrylic acid 40.3 g, acrylamide 26.9 g, vinyl sulfonic acid: 13.4 g, deionized water: 48g water), after dropwise addition, insulation reaction was carried out for 3 hours, and the product was obtained after cooling. The polymerization rate of the product is 99.0%, the total solid content is 35.66%, and the pH of the 10% solution is 2.30.

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Abstract

The invention provides a dirt dispersion agent which is a copolymer of acrylic acid, acrylamide and organic compounds with sulfonic acid groups, the mass ratio of which is 5-40 to 1-15 to 1-15 and a preparation method thereof. The copolymer has the solid content of 30-40 percent and the molecular weight of 1000-10000; the organic compounds with sulfonic acid groups are vinyl sulfonic acid, 2-acrylamido-2-methyl-1- propane sulfonate, sodium allylsulfonate or 2-acrylamide dodecyl sulfonate. The dirt dispersion agent of the invention also comprises amido, carboxyl and sulfonate functional groups, thus leading the agent to have good function of inhibiting calcium carbonate scale as well as good performance of dispersing ferric oxide. The dirt dispersion agent still has high performance of dirt dispersion even in water with inorganic salt of high concentration and can be widely applied to a treatment system of industrial water, such as industrial circulating water and reverse osmosis water, etc.

Description

technical field [0001] The invention relates to the technical field of water treatment, more specifically, to water treatment reagents, in particular to a scale-inhibiting dispersant and a preparation method thereof. Background technique [0002] Scale inhibitors and dispersants are a class of chemical agents that account for a large proportion in the daily chemical treatment of circulating water and reverse osmosis systems. For example, hydroxyethylidene diphosphonic acid (HEDP) and aminotrimethylene phosphonic acid (ATMP), etc., are all formed by some functional groups in their molecules, which are adsorbed by electrostatic force to the crystals (crystal nuclei) that are being formed by fouling metal salts. ) on the surface of the active point, inhibiting crystal growth, so that many of the formed crystals remain in the microcrystalline state; at the same time, due to the adsorption of scale inhibitor molecules on the crystal surface, the formed crystals are distorted. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C02F1/44
Inventor 李玉江
Owner OCHEMATE MATERIAL TECH CO LTD
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