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Dispersant for coal water slurry and preparation method thereof

A technology of dispersant and coal-water slurry, which is applied in the field of coal-water slurry dispersant and its preparation, can solve the problems of inability to balance dispersion performance and cost, and achieve the effect of reducing production cost and achieving good performance.

Active Publication Date: 2016-05-11
TAIYUAN CITY TIANDINGHENG CONCRETE ADMIXTURES TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a coal-water slurry dispersant and its preparation method, which solves the problem that the dispersant performance and cost of the coal-water slurry dispersant in the prior art cannot be balanced

Method used

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  • Dispersant for coal water slurry and preparation method thereof
  • Dispersant for coal water slurry and preparation method thereof
  • Dispersant for coal water slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Coal water slurry dispersant, by weight percentage, its raw material comprises: acrylic acid 17%, polyethylene glycol 20%, polymerization inhibitor 0.01%, sucrose ester 20%, humic acid 20%, initiator 1.99% and lignin Sulfonate 21%.

[0023] The preparation method of above-mentioned coal-water slurry dispersant comprises the following steps:

[0024] a. Add acrylic acid, polyethylene glycol and a polymerization inhibitor into the flask, raise the temperature to 70° C., and keep the temperature for 4 hours to obtain the first system mainly composed of acrylic acid-polyethylene glycol;

[0025] B, add humic acid to distilled water, then add catalyst, heat and stir, humic acid is dissolved, obtain humic acid aqueous solution; Described catalyst is the mixture of formaldehyde and sodium sulfite that mass ratio is 1:2, the mixture of formaldehyde and sodium sulfite The total weight is 1% of the weight of humic acid;

[0026] c. Add humic acid aqueous solution and initiator ...

Embodiment 2

[0033] Coal water slurry dispersant, by weight percentage, its raw material comprises: acrylic acid 20%, polyethylene glycol 25%, polymerization inhibitor 0.05%, sucrose ester 12%, humic acid 20.5%, initiator 2.45% and lignin Sulfonate 20%.

[0034] The preparation method of above-mentioned coal-water slurry dispersant comprises the following steps:

[0035] a. Add acrylic acid, polyethylene glycol and a polymerization inhibitor into the flask, raise the temperature to 75° C., and keep the temperature for 3 hours to obtain the first system mainly composed of acrylic acid-polyethylene glycol;

[0036] B, add humic acid to distilled water, then add catalyst, heat and stir, humic acid is dissolved, obtain humic acid aqueous solution; Described catalyst is the mixture of formaldehyde and sodium sulfite that mass ratio is 1:2, the mixture of formaldehyde and sodium sulfite The total weight is 1% of the weight of humic acid;

[0037] c. Add the aqueous solution of humic acid and t...

Embodiment 3

[0044]Coal water slurry dispersant, by weight percentage, its raw material includes: acrylic acid 16%, polyethylene glycol 23%, polymerization inhibitor 0.02%, sucrose ester 10%, humic acid 23%, initiator 3.98% and lignin Sulfonate 24%.

[0045] The preparation method of above-mentioned coal-water slurry dispersant comprises the following steps:

[0046] a. Add acrylic acid, polyethylene glycol and a polymerization inhibitor into the flask, raise the temperature to 75° C., and keep the temperature for 5 hours to obtain the first system mainly composed of acrylic acid-polyethylene glycol;

[0047] B, add humic acid to distilled water, then add catalyst, heat and stir, humic acid is dissolved, obtain humic acid aqueous solution; Described catalyst is the mixture of formaldehyde and sodium sulfite that mass ratio is 1:2, the mixture of formaldehyde and sodium sulfite The total weight is 1% of the weight of humic acid; c. Add the aqueous solution of humic acid and the initiator s...

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Abstract

The invention provides a dispersant for coal water slurry and a preparation method thereof. The dispersant for coal water slurry comprises the following raw materials: 15 to 20% of acrylic acid, 20 to 25% of polyethylene glycol, 0.01 to 0.05% of a polymerization inhibitor, 10 to 20% of sucrose ester, 20 to 25% of humic acid, 2 to 4% of an initiator and 17 to 24% of sulfonated lignin. The preparation method for the coal water slurry employs aqueous solution polymerization, utilizes humic acid and sucrose ester with low cost as the raw materials and cooperatively uses cheap sulfonated lignin, so the obtained dispersant has reduced production cost on the premise that good performance of the dispersant is guaranteed.

Description

technical field [0001] The invention relates to the field of dispersants, in particular to a coal-water slurry dispersant and a preparation method thereof. Background technique [0002] Coal water slurry is a new type of coal-based oil substitute fuel made by physical processing of about 70% coal, 30% water and a small amount of additives. Coal is a lipophilic substance, and coal-water slurry is basically a coarse particle suspension system. When there is no dispersant, the slurrying property is often poor, and hard precipitation often occurs when the slurry is placed for 12-24 hours, which seriously limits the application and promotion of coal-water slurry technology. , to make it form a stable coal-water mixed colloid solution, it is necessary to use a dispersant to change the properties of the coal surface, so that the coal particles can be evenly dispersed in water. [0003] At present, the commonly used dispersants for coal water slurry are: (1) Naphthalenesulfonate po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32C10L1/24C10L1/198C08G81/00C08G65/48
Inventor 田国平
Owner TAIYUAN CITY TIANDINGHENG CONCRETE ADMIXTURES TECH DEV CO LTD