Silica with high fluidity and high oil absorption value for washing powder and preparation method thereof

A silicon dioxide, high fluidity technology, applied in the direction of silica, silicon oxide, chemical instruments and methods, etc., can solve the problems of high cost, complicated preparation process, poor fluidity, etc., achieve high oil absorption value and simplify the preparation process , the effect of reducing production costs

Active Publication Date: 2019-11-01
GUANGZHOU FEIXUE MATERIAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the problems of poor fluidity, complex preparation process and high cost of existing silica, the present invention provides a method for preparing silica for washing powder with high fluidity and high oil absorption value. By changing and simplifying the production process, the silica Silicon not only has high adsorption, but also has small and uniform particles, which can be well used as an anti-caking agent for washing powder

Method used

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  • Silica with high fluidity and high oil absorption value for washing powder and preparation method thereof
  • Silica with high fluidity and high oil absorption value for washing powder and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] Embodiment 1. Silica for washing powder with high fluidity and high oil absorption value of the present invention and its preparation method

[0028] S1, add water 9m into the reactor 3 , add 0.5m sulfuric acid solution with a concentration of 6.0mol / L under stirring 3 , heated to 80°C, followed by 12m 3 Add sodium silicate solution at a dropping rate of / h to a pH value of 3.5, then simultaneously dropwise add sodium silicate solution and sulfuric acid solution to carry out co-current neutralization reaction, control the pH value of the reaction process to be 3.0, the total addition of sodium silicate solution 6m 3 , when the sodium silicate solution is added dropwise, stop adding the sulfuric acid solution, and stir for another 10 min;

[0029] S2, continue to add sodium silicate solution, the rate of addition of control sodium silicate solution is 6m 3 / h, stop dripping when the pH value of the reaction process reaches 7.0, ripening 15min;

[0030] S3. Press fil...

Embodiment 2

[0032] Embodiment 2, silica and preparation method thereof for washing powder with high fluidity and high oil absorption value of the present invention

[0033] S1, add water 11m into the reactor 3 , add 1m of sulfuric acid solution with a concentration of 3.0mol / L under stirring 3 , heated to 90°C, followed by 16m 3 Add sodium silicate solution at a dropping rate of / h to pH 4.5, then add sodium silicate solution and sulfuric acid solution dropwise at the same time to carry out co-current neutralization reaction, control the pH value of the reaction process to 5.0, the total addition of sodium silicate solution 8m 3 , when the sodium silicate solution was added dropwise, stop adding the sulfuric acid solution, and then stir for 15 minutes;

[0034] S2, continue to add sodium silicate solution, the rate of addition of control sodium silicate solution is 7m 3 / h, stop dripping when the pH value of the reaction process reaches 8.0, ripen 15min;

[0035] S3. Press filter and w...

Embodiment 3

[0037] Example 3. Silica for washing powder with high fluidity and high oil absorption value of the present invention and its preparation method

[0038] S1, add water 10m to the reactor 3 , add 0.8m sulfuric acid solution with a concentration of 4.0mol / L under stirring 3 , heated to 90°C, followed by 14m 3 Add sodium silicate solution at a dropping rate of / h until the pH value is 4.0, and then simultaneously drop sodium silicate solution and sulfuric acid solution to carry out co-current neutralization reaction, control the pH value of the reaction process to be 3.0, the total addition of sodium silicate solution 7m 3 , when the sodium silicate solution is added dropwise, stop adding the sulfuric acid solution, and stir for another 10 min;

[0039] S2, continue to add sodium silicate solution, the rate of addition of control sodium silicate solution is 8m 3 / h, stop dripping when the pH value of the reaction process reaches 7.0, and ripen 10min;

[0040] S3. Press filte...

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Abstract

The invention belongs to the technical field of silica preparation, and particularly relates to silica with high fluidity and high oil absorption value for washing powder and a preparation method thereof. The preparation method of silica comprises the following steps: S1, adding water into a reaction kettle, adding a sulfuric acid solution under stirring, performing heating, dropwise adding a sodium silicate solution until a pH value is 3.5-4.5, then simultaneously dropwise adding the sodium silicate solution and the sulfuric acid solution to carry out a cocurrent neutralization reaction, controlling a pH value to be 3.0-5.0, simultaneously stopping addition of the sulfuric acid solution when drop addition of the sodium silicate solution is completed, and further performing stirring; S2, continuously adding the sodium silicate solution, stopping drop addition of the sodium silicate solution when a pH value is 7.0-8.0, and performing maturing; and S3, performing pressure filtration andwashing on the formed silica, and performing spray drying treatment to obtain the silica. The silica has uniform particle size distribution, large specific surface area, high oil absorption value andhigh fluidity, and has good application prospects in washing powder.

Description

technical field [0001] The invention belongs to the technical field of silica preparation, and in particular relates to a silica for washing powder with high fluidity and high oil absorption value and a preparation method thereof. Background technique [0002] With the gradual enhancement of people's awareness of environmental protection, people will pay more and more attention to their own quality of life. Most of the washing powder with sodium tripolyphosphate as an auxiliary agent has been gradually replaced by 4A zeolite for washing. With the improvement of people's family life quality With continuous improvement, people's requirements for washing products are getting higher and higher, and higher requirements are put forward for additives that play a role in aiding flow and anti-caking in washing powder formulas. High-efficiency, decontamination, energy-saving, and environmentally friendly concentrated washing powder has become The mainstream trend of the laundry deterg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/193C01B33/18C11D1/22C11D3/12C11D3/10C11D3/04C11D3/22C11D3/42C11D3/50C11D3/60
CPCC01B33/18C01B33/193C01P2004/61C01P2006/12C01P2006/19C01P2006/90C11D1/22C11D3/046C11D3/10C11D3/124C11D3/222C11D3/42C11D3/50
Inventor 李丽峰任振雪张梦梅梁少彬高文颖
Owner GUANGZHOU FEIXUE MATERIAL TECH
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