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Sustained-release scale inhibitor and preparation method thereof

A scale inhibitor and slow-release technology, applied in the field of slow-release scale inhibitor and its preparation, can solve the problems of difficult degradation, restricted use, adverse health, etc., and achieve the effects of good biodegradability, rapid degradation, and long-term harm avoidance

Inactive Publication Date: 2019-04-09
魏东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphorus-containing compounds have the problem of polluting water bodies and have adverse effects on human health, which has greatly limited their application fields.
Other inorganic polymers also have problems such as eutrophication, difficulty in degradation, and toxicity
[0004] In addition, the existing antiscalants are all water-soluble components, which dissolve quickly after contact with water, and it is difficult to control their dosage, which limits their use on small devices such as household water dispensers.

Method used

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  • Sustained-release scale inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) first weigh polyhistidine and sodium citrate according to the mass ratio of 1:1, and put into a ball mill, and ball mill for 20 minutes to make it mix evenly;

[0030] (2) Weigh diatomaceous earth of the same quality as the mixture obtained in step (1), drop into the mixture obtained in step (1), and continue ball milling for 40 minutes to make it evenly mixed;

[0031] (3) Put the mixture in the step (2) into a granulator to make φ3~4mm compact granules, and dry them to make them have a certain strength;

[0032] (4) Weigh kaolin with the same quality as the dried granules obtained in step (3), and ball mill for 45 minutes; use the granules obtained in step (3) as seed granules, and put them into a granulator for granulation to make φ5~6mm granules ;

[0033] (5) drying the granules prepared in step (4) at a temperature of 180° C., and the outer layer of kaolin forms a shell with strength;

[0034] (6) Weigh kaolin that is twice the quality of the particles obtai...

Embodiment 2

[0036] (1) First take polyhistidine and sodium gluconate according to the mass ratio of 1.5:1, and put into a ball mill, and ball mill for 30 minutes to make it mix uniformly;

[0037] (2) Weigh diatomaceous earth of the same quality as the mixture obtained in step (1), put it into the mixture obtained in step (1), and continue ball milling for 60 minutes to make it evenly mixed;

[0038] (3) Put the mixture in the step (2) into a granulator to make φ3~4mm compact granules, and dry them to make them have a certain strength;

[0039] (4) Weigh kaolin with the same quality as the dried particles obtained in step (3), and ball mill for 30 minutes; use the particles obtained in step (3) as seed particles, put them into a granulator for granulation, and make φ5~6mm particles ;

[0040] (5) drying the granules prepared in step (4) at a temperature of 150° C., and the outer layer of kaolin forms a shell with strength;

[0041] (6) Weigh kaolin that is twice the quality of the parti...

Embodiment 3

[0043] (1) first weigh polyhistidine and sodium salicylate according to the mass ratio of 1.2:1, and put into a ball mill, and ball mill for 15 minutes to make it mix uniformly;

[0044] (2) Take by weighing the zeolite powder of the same quality as the mixture obtained in step (1), put it into the mixture obtained in step (1), and continue ball milling for 30 minutes to make it evenly mixed;

[0045] (3) Put the mixture in the step (2) into a granulator to make φ3~4mm compact granules, and dry them to make them have a certain strength;

[0046] (4) Weigh kaolin with the same quality as the dried granules obtained in step (3), and ball mill for 45 minutes; use the granules obtained in step (3) as seed granules, and put them into a granulator for granulation to make φ5~6mm granules ;

[0047] (5) drying the granules prepared in step (4) at a temperature of 120° C., and the outer layer of kaolin forms a shell with strength;

[0048](6) Weigh the kaolin that is twice the qualit...

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Abstract

The invention relates to a sustained-release scale inhibitor and a preparation method thereof, and belongs to the technical field of water treatment. The sustained-release scale inhibitor is preparedfrom the following raw materials in parts by weight: 5-15 parts of poly-histidine, 3-10 parts of hydroxy-carboxylate, 50-80 parts of kaolin, 20-40 parts of microporous minerals and 3-5 parts of waterinsoluble adhesive. The sustained-release scale inhibitor is scientific and reasonable in formula design and good in biodegradability, can be quickly degraded in the natural environment, can avoid long-term hazard of scale inhibitor emission on the environment, and is nontoxic and harmless to organisms and human beings. The invention further provides a simple and convenient preparation method.

Description

technical field [0001] The invention relates to a slow-release scale inhibitor and a preparation method thereof, belonging to the technical field of water treatment. Background technique [0002] In the field of water treatment, scale and corrosion inhibition are two very important topics. With the development of new material technology, corrosion inhibition technology is becoming more and more mature, but there is still a lot of room for improvement in the field of scale inhibition. [0003] Existing scale inhibitors are mainly phosphorus-containing organic and inorganic compounds, as well as some other organic polymers, the main principle of which is to chelate Ca 2+ , Mg 2+ Ions, prevent its crystallization, interfere with crystal growth, thus preventing scale formation. Phosphorus-containing compounds have the problem of water pollution and adverse effects on human health, which greatly restricts their application fields. Other inorganic polymers also have problems s...

Claims

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Application Information

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IPC IPC(8): C02F5/12
CPCC02F5/125C02F2303/08
Inventor 魏东
Owner 魏东
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