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A kind of preparation method of tea saponin acrylic acid polymer and its application in coal water slurry

A technology of tea saponin acrylic acid and polymer, which is applied in the field of coal water slurry additives, can solve the problems of coal water slurry system such as easy sedimentation, weak action force, good hydrophilicity, etc., and achieve easy control of reaction conditions, wide application range, The effect of simple preparation process

Active Publication Date: 2019-12-10
青田中科植物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has good hydrophilicity and weak lipophilicity, and the direct interaction with the surface of hydrophobic coal is not strong, which makes the coal-water slurry system easy to settle
[0004] There is no report on the preparation of a coal-water slurry additive with good compatibility with coal by modifying the molecular structure of tea saponin

Method used

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  • A kind of preparation method of tea saponin acrylic acid polymer and its application in coal water slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Mix 100g tea saponin with 100g methallyl alcohol polyoxyethylene ether (average molecular weight 1200), add 200g water to dissolve, then add 0.1g ammonium persulfate and mix evenly, add dropwise 10g acrylic acid, 10g sodium propylene sulfonate and 0.02 g thioglycolic acid mixture, reaction time 2h. After cooling to room temperature, the pH of the system was adjusted to 6 with 20% sodium hydroxide, and vacuum-dried at 70° C. for 3 hours to obtain 216 g of tea saponin acrylic acid polymer.

Embodiment 2

[0022] Mix 100g of tea saponin with 300g of methallyl alcohol polyoxyethylene ether (average molecular weight 2400), add 2000g of water to dissolve, then add 4g of potassium persulfate and mix evenly, add dropwise 30g of acrylic acid, 30g of sodium propylene sulfonate and 0.3g of Mercaptopropionic acid mixture, reaction time 6h. After cooling to room temperature, the pH of the system was adjusted to 8 with 40% potassium hydroxide, and vacuum-dried at 70° C. for 6 hours to obtain 462 g of tea saponin acrylic acid polymer.

Embodiment 3

[0024] Mix 100g of tea saponin with 200g of methallyl alcohol polyoxyethylene ether (average molecular weight 1200), add 900g of water to dissolve, then add 1.5g of ammonium persulfate and mix evenly, add dropwise 40g of acrylic acid, 20g of sodium propylene sulfonate and 0.1 g thioglycolic acid mixture, reaction time 4h. After cooling to room temperature, the pH of the system was adjusted to 7 with 30% sodium hydroxide, and vacuum-dried at 60° C. for 4 hours to obtain 358 g of tea saponin acrylic acid polymer.

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Abstract

The invention discloses a preparation method of a tea saponin acrylic polymer. The preparation method is characterized by comprising steps as follows: tea saponin is mixed with methallyl alcohol polyoxyethylene ether with the mass being 1-3 times that of tea saponin, water with the mass being 1-5 times the total mass of solid substances is added for dissolution, ammonium persulfate or potassium persulfate accounting for 0.1%-1% of the total mass is added, the mixture is mixed uniformly, acrylic acid accounting for 10%-30% of the mass of methallyl alcohol polyoxyethylene ether, acrylic sodium sulfonate accounting for 10%-30% of the mass of methallyl alcohol polyoxyethylene ether and a mercaptoacetic acid or mercaptopropionic acid mixed solution accounting for 0.02%-0.1% of the mass of methallyl alcohol polyoxyethylene ether are dropwise added at the temperature of 40-70 DEG C, and the mixture reacts for 2-6 h; the pH of the system is adjusted to 6-8 with sodium hydroxide or potassium hydroxide with the mass percentage of 20%-40% after the mixture is cooled to the room temperature, vacuum drying is performed at 50-70 DEG C for 3-6 h, and the tea saponin acrylic polymer is obtained. The tea saponin acrylic polymer is used as a dispersant and a stabilizer of the coal water slurry, the addition amount is 0.1%-0.5%, and the tea saponin acrylic polymer has excellent performance and applicable to a wide variety of coal.

Description

technical field [0001] The invention relates to the field of coal-water slurry additives, in particular to a preparation method of tea saponin acrylic acid polymer and its application in coal-water slurry. Background technique [0002] As a low-pollution, high-efficiency, pipeline-transportable oil-substituting coal-based fluid fuel, coal-water slurry has low pollutant emissions and high safety. It is an economical and clean coal technology. In the process of processing, it is necessary to add dispersant and stabilizer to make it have good dispersion and fluidity, so as to ensure the needs of long-distance transportation. At present, the additives for coal water slurry include naphthalene-based additives, lignosulfonate additives, humic acid-based additives and polycarboxylic acid-based additives. Naphthalene-based additives are highly toxic and prone to hard precipitation; lignin sulfonate and humic acid-based additives have poor dispersion and flow properties; polycarboxy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F220/32C08F220/06C08F228/02C10L1/24C10L1/32
CPCC08F283/065C10L1/2475C10L1/326C08F220/32
Inventor 叶勇刘松柏朱伯荣徐兵李云
Owner 青田中科植物科技有限公司
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