Method for preparing dispersing agent through ultrasonic-assisted base catalysis of sulfonated pennisetum sinese separation waste liquid degradation product

A technology for separating waste liquid and degradation products, applied in the field of environmentally friendly materials and additives, and fine chemicals, it can solve the problems of low chemical reaction activity and unfavorable modification, and achieve the effects of improving reaction efficiency, reducing energy consumption and improving separation efficiency.

Active Publication Date: 2022-04-29
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its molecular weight is polydisperse, and its chemical reactivity is low, which is not conducive to the modification. It can be chemically modified after the catalytic degradation of the separation waste liquid of giant fungus

Method used

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  • Method for preparing dispersing agent through ultrasonic-assisted base catalysis of sulfonated pennisetum sinese separation waste liquid degradation product
  • Method for preparing dispersing agent through ultrasonic-assisted base catalysis of sulfonated pennisetum sinese separation waste liquid degradation product
  • Method for preparing dispersing agent through ultrasonic-assisted base catalysis of sulfonated pennisetum sinese separation waste liquid degradation product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This example provides a kind of preparation method of dispersant, described method comprises the following steps:

[0034] 1) Mix 5.0kg sodium hydroxide, 5.0kg sodium hydrosulfide and 858.0kg distilled water, and stir evenly to obtain a mixed solution;

[0035] 2) Add 100.0kg of dried giant juncao powder and 858.0kg of the mixed solution obtained in step 1) into the ultrasonic reactor, control the power of the ultrasonic reactor to 500W, the frequency to 60kHz, and react at 160°C 3h, after the reaction was completed, the solid residue was removed by filtration to obtain the separation waste liquid of Jujuncao;

[0036] 3) Add 5.0kg of Co / MCM-41 to the separation waste liquid obtained in step 2), and conduct a hydrothermal reaction at 240°C for 3.0 hours. After the reaction is completed, cool to room temperature to obtain the degradation product of separation waste liquid of giant fungus ;

[0037] 4) Add 25.0kg of polycarbonate to the degradation product of the separa...

Embodiment 2

[0040] This example provides a kind of preparation method of dispersant, described method comprises the following steps:

[0041] 1) Mix 20.0kg potassium hydroxide, 20.0kg sodium bisulfite and 819.0kg distilled water, and stir evenly to obtain a mixed solution;

[0042] 2) Add 100.0kg of dried giant juncao powder and 859.0kg of the mixed solution obtained in step 1) into the ultrasonic reactor, control the power of the ultrasonic reactor to 200W, the frequency to 40kHz, and react at 80°C for 0.5 h, after the reaction is finished, the solid residue is removed by filtration, and the separation waste liquid of Jujuncao is obtained;

[0043] 3) Add 10.0kg of Fe / MCM-41 to the waste liquid separated from C. chinensis obtained in step 2), conduct a hydrothermal reaction at 200°C for 4.0 hours, cool to room temperature after the reaction, and obtain the degradation product of the waste liquid separated from C. spp.;

[0044] 4) Add 30.0kg of polycarbonate to the degradation product o...

Embodiment 3

[0047] This example provides a kind of preparation method of dispersant, described method comprises the following steps:

[0048] 1) Mix 5.0kg lithium hydroxide, 20.0kg sodium metabisulfite and 818.5kg distilled water, and stir evenly to obtain a mixed solution;

[0049] 2) Add 100.0kg of dried giant juncao powder and 843.5kg of the mixed solution obtained in step 1) into the ultrasonic reactor, control the power of the ultrasonic reactor to 300W, the frequency to 45kHz, and react at 130°C for 1.5 h, after the reaction is finished, the solid residue is removed by filtration, and the separation waste liquid of Jujuncao is obtained;

[0050] 3) Add 5.0kg of Cu / MCM-41 to the separation waste liquid of Jujuncao obtained in step 2), conduct a hydrothermal reaction at 260°C for 3.0 hours, cool to room temperature after the reaction, and obtain the degradation product of separation waste liquid of Jujuncao;

[0051] 4) Add 50.0kg of polycarbonate to the degradation product of the se...

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Abstract

The invention discloses a method for preparing a dispersing agent through ultrasonic-assisted alkali catalysis of a sulfonated pennisetum sinese separation waste liquid degradation product. The method comprises the following steps: firstly, carrying out ultrasonic-assisted base catalysis sulfonation separation to obtain a pennisetum sinese separation waste liquid, then carrying out hydrothermal degradation on the base catalysis sulfonation pennisetum sinese separation waste liquid by using a reduced metal catalyst, carrying out catalytic degradation on the waste liquid into a polymer with the molecular weight of 1000 or below, and carrying out oriented polymerization on a degradation product to obtain the pennisetum sinese separation waste liquid. The dispersing agent which is low in mixing amount, high in dispersity and wide in application range is developed by regulating and controlling the molecular weight. The pennisetum sinese is used for separating the waste liquid, a new technical path is provided for resource utilization of the pennisetum sinese, the preparation process is simple, production conditions are easy to control, the price is low, and the obtained dispersing agent can be widely applied to ceramic additives, dye dispersing agents, concrete water reducing agents, coal water slurry dispersing agents and the like and has wide application prospects.

Description

technical field [0001] The invention belongs to the fields of fine chemical industry, environment-friendly materials and additives, and more specifically relates to a method for preparing a dispersant by ultrasonic-assisted alkali-catalyzed sulfonation of the degraded product of the separation waste liquid of chrysanthemum. Background technique [0002] Giant Juncao is a high-yielding, high-quality Juncao introduced from Africa. It is currently being promoted and planted in Fujian, Ningxia, Guangxi, Zhejiang, Xinjiang and other provinces in China, as well as in many countries in Africa and America. Grass is a monocotyledonous perennial plant hybridized. It has low requirements on temperature and soil, strong adaptability, fast growth, high yield, high photosynthetic efficiency, and strong stress resistance. Production up to 500 t / hm 2 , which is the highest yield of known artificially grown plants. [0003] At present, Jujuncao has been applied in the fields of biomass pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/28C04B35/63C04B35/632C04B35/634C09B67/46C10L1/10C10L1/32C09B67/38C04B103/30
CPCC10L1/10C10L1/326C04B40/0039C04B35/63C04B35/632C04B35/63464C09B67/0084C04B2103/302C04B2103/0001C04B24/286C04B24/02
Inventor 刘明华曾奇斌汪蔚霖林春香刘以凡叶晓霞
Owner FUZHOU UNIV
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