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A kind of modified starch scale inhibitor and preparation method thereof

A scale inhibitor, starch technology, applied in chemical instruments and methods, descaling and water softening, special treatment targets, etc., can solve problems such as explosion, equipment corrosion, heat exchange equipment scaling, etc. The effect of easy availability of raw materials and short production cycle

Active Publication Date: 2021-05-04
GUANGZHOU LIANFU NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main way to save cooling water in industrial water is to recycle cooling water and increase the concentration factor. Moreover, circulating cooling water with high concentration factor operation can also reduce environmental pollution. However, for circulating cooling water systems, recycling will cause water quality to deteriorate , due to the concentration of inorganic ions and organic substances, as well as the combined effects of equipment structure and materials, equipment is more prone to fouling, which will cause equipment corrosion, pipeline blockage, energy waste, etc., and even explosion accidents, seriously affecting production equipment normal operation
According to relevant data, 90% of the heat exchange equipment has scaling problems of varying degrees

Method used

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  • A kind of modified starch scale inhibitor and preparation method thereof
  • A kind of modified starch scale inhibitor and preparation method thereof
  • A kind of modified starch scale inhibitor and preparation method thereof

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preparation example Construction

[0034] A kind of preparation method of modified starch antiscalant of the present invention, realize by following steps:

[0035] (1) Add starch and demineralized water to the stirred polymerization reactor, start stirring, and start heating to raise the temperature, wait for the temperature to rise to 80-100°C, and react for 1-2 hours;

[0036] (2) Add silazane and maleimide-based monomers into the stirring polymerization reactor, and continue to raise the temperature to 105-120°C, then turn on the ultraviolet light to irradiate the reaction solution, and the irradiation time is 1-3 hours , while starting to drop an initiator solution with a mass concentration of 3% to 9%, the initiator solution is prepared from the initiator and desalted water, and the dropping time is controlled at 3 to 6 hours;

[0037] (3) After the dropwise addition, keep the temperature and continue to react for 1 to 3 hours, then cool down and discharge the material to obtain the scale inhibitor.

Embodiment 1

[0040] A modified starch scale inhibitor of the present invention is made of the following raw material components in proportions by mass:

[0041]

[0042] A kind of preparation method of modified starch antiscalant of the present invention, realize by following steps:

[0043] (1) Add 22 parts of cornstarch and 65.2 parts of demineralized water into the stirred polymerization reactor, start the stirring, and start heating to raise the temperature, wait for the temperature to rise to 82°C, and react for 1.1 hours;

[0044] (2) Add 1.5 parts of hexamethyldisilazane and 1.3 parts of maleimide into the stirring polymerization reactor, and after the temperature continues to rise to 108°C, turn on the ultraviolet light to irradiate the reaction solution, the wavelength of ultraviolet light It is 230nm, the power is 600W, and the irradiation time is 1.2 hours. At the same time, the initiator solution with a mass concentration of 3.3% is started to be added dropwise. This initiat...

Embodiment 2

[0047] A modified starch scale inhibitor of the present invention is made of the following raw material components in proportions by mass:

[0048]

[0049] A kind of preparation method of modified starch antiscalant of the present invention, realize by following steps:

[0050] (1) Add 24 parts of wheat starch and 62.2 parts of demineralized water into the stirred polymerization reactor, start the stirring, and start heating to raise the temperature, wait for the temperature to rise to 88°C, and react for 1.3 hours;

[0051] (2) Add 2.2 parts of hexamethyldisilazane and 1.6 parts of N-methylmaleimide into the stirring polymerization reactor, and after the temperature continues to rise to 110°C, turn on the ultraviolet light to irradiate the reaction solution, The wavelength of the ultraviolet light is 280nm, the power is 780W, and the irradiation time is 1.5 hours. At the same time, the initiator solution with a mass concentration of 4.6% is added dropwise. This initiator ...

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Abstract

The invention relates to a modified starch scale inhibitor and a preparation method thereof, which are realized through the following steps: (1) Add starch and desalinated water into a stirred polymerization reactor, start stirring, and start heating to raise the temperature until the temperature rises to 80 ~100°C, react for 1~2 hours; (2) Add silazane and maleimide-based monomers into the stirred polymerization reactor, and continue to rise to 105~120°C, then turn on the ultraviolet light to react the reaction liquid Carry out irradiation, irradiation time is 1~3 hour, start to drip the initiator solution that mass concentration is 3%~9% at the same time, this initiator solution is prepared by described initiator and desalinated water, and dropping time is controlled at 3 ~ 6 hours; (3) After the dropwise addition, keep the temperature and continue to react for 1 ~ 3 hours, cool down and discharge the material to obtain the scale inhibitor.

Description

technical field [0001] The invention belongs to the technical field of industrial water treatment, in particular to a modified starch scale inhibitor and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of industry, a large amount of industrial water needs to be consumed, among which cooling water accounts for more than 60% of industrial water consumption. About 65% in the chemical industry and about 80% in the petroleum industry. The main way to save cooling water in industrial water is to recycle cooling water and increase the concentration factor. Moreover, circulating cooling water with high concentration factor operation can also reduce environmental pollution. However, for circulating cooling water systems, recycling will cause water quality to deteriorate , due to the concentration of inorganic ions and organic substances, as well as the combined effects of equipment structure and materials, equipment is more pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/12C08F251/00C08F222/40C08F2/48C08B31/00
CPCC02F5/12C08B31/00C08F2/48C08F251/00C02F2303/08C08F222/402C08F222/40
Inventor 林文标
Owner GUANGZHOU LIANFU NEW MATERIALS TECH CO LTD