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Preparation method of slow-release scale inhibitor

A scale inhibitor and slow-release technology, applied in the field of preparation of slow-release scale inhibitor, can solve the problems of difficult release rate control, uneven surface area, poor mechanical strength, etc. The effect of reducing the replacement rate

Inactive Publication Date: 2020-03-31
OCHEMATE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a preparation method of a slow-release scale inhibitor, which overcomes the problem of continuous dosing of liquid scale inhibitors, and simultaneously solves the problem of poor mechanical strength, uneven surface area, and slow release speed of irregular solid scale inhibitors in the prior art. Defects such as difficult to control

Method used

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  • Preparation method of slow-release scale inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Take by weighing 20.37g sodium hexametaphosphate, 0.56g calcium oxide and 0.51g aluminum oxide and mix into uniform powder;

[0053] (2) Put the powder in step (1) in a quartz crucible, then place it in a high-temperature melting furnace for reaction, gradually heat up to 700°C at a rate of 1°C / min, and stop at 300°C and 600°C respectively 30min, react at 700°C for 1h to obtain a molten reaction liquid;

[0054] (3) Pour the reaction solution obtained in step (2) into a cold water tray equipped with circulating cooling water while it is hot to obtain a fine sandy solid material, which is then filtered, dried at 120° C. for 4 hours, and ground with a mortar. And sieve to 30 mesh;

[0055] (4) Put the fine sand-like solid material into a cylindrical mold with a size of 10*15mm (diameter*height), place it in a high-temperature vacuum furnace at 700°C for 1 hour, and press 0.1pa, then take it out and cool it naturally to get the obtained product The slow release antis...

Embodiment 2

[0058] (1) Take by weighing 70.2g sodium hexametaphosphate, 3.6g calcium oxide, 3.8g magnesium oxide, 4g aluminum oxide and 0.8g silicon oxide, mix into uniform powder;

[0059] (2) Put the powder in step (1) in a quartz crucible, then place it in a high-temperature furnace for reaction, and gradually heat up to 1000°C at a rate of 3°C / min, and stay at 300°C and 600°C for 30 minutes respectively , start stirring at 850°C, rotate at 10rpm / min, react at 1000°C for 3h, and obtain a molten reaction liquid;

[0060] (3) Pour the reaction solution obtained in step (2) into a cold water tray equipped with circulating cooling water while it is hot to obtain a fine sandy solid material, filter it, dry it at 100°C for 6 hours, and grind it with a mortar. And sieve to 20 mesh;

[0061] (4) Put the sieved material into a cylindrical mold with a size of 7*10mm (diameter*height), place it in a high-temperature vacuum furnace at 1000°C for 0.5h, and press at 0.1pa, then take it out and let ...

Embodiment 3

[0064] (1) Take by weighing 61.12g sodium hexametaphosphate, 4.48g calcium oxide, 4g magnesium oxide, 1.02g aluminum oxide and 0.6g silicon oxide, mix into uniform powder;

[0065] (2) Put the powder in step (1) in a quartz crucible, then place it in a high-temperature furnace for reaction, gradually heat up to 1000°C at a rate of 4°C / min, and stay at 300°C and 600°C for 30 minutes respectively , start stirring at 850°C, rotate at 8rpm / min, react at 1000°C for 3.5h, and obtain a molten reaction liquid;

[0066] (3) Pour the reaction solution obtained in step (2) into a cold water tray equipped with circulating cooling water while it is hot to obtain a fine sandy solid material, which is then filtered, dried at 120° C. for 4 hours, and ground with a mortar. And sieve to 30 mesh;

[0067] (4) Put the screened material into a cylindrical mold with a size of 5*8mm (diameter*height), place it in a high-temperature vacuum furnace at 1000°C for 2 hours, and press 0.1pa, then take it...

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Abstract

The invention provides a preparation method of a slow-release scale inhibitor. The invention overcomes problems in continuous dosing of a liquid scale inhibitor and also overcomes the defects of poormechanical strength, non-uniform surface area, difficulty in control of release speed and the like of irregular solid scale inhibitors in the prior art. When the slow-release scale inhibitor is applied to scale inhibition of domestic purified water, the scale inhibitor is non-toxic and harmless, has a high scale inhibition rate, and can reduce the replacement rate of a filter element and prolong the service life of the filter element.

Description

technical field [0001] The invention relates to the field of domestic water purification treatment, in particular to a preparation method of a slow-release scale inhibitor. Background technique [0002] Scale inhibitors refer to a class of drugs that can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surfaces, and maintain good heat transfer effects of metal equipment, thereby achieving energy saving and emission reduction. [0003] At present, most commonly used antiscalants are liquids, which are convenient to use and easy to compound, but require special filling devices, and the concentration of antiscalants is not easy to control, and it is easy to flow with the flow of the medium. In contrast, solid antiscalants increase the physical and chemical stability of the agent, and are easy to store and transport. However, the shapes of solid antiscalants on the market are mostly irregul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08
CPCC02F5/086C02F5/083
Inventor 袁新兵王健沛朱文辉卢明凤王庆
Owner OCHEMATE MATERIAL TECH CO LTD
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