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A coal-water slurry dispersant

A technology of dispersant and coal-water slurry, which is used in fuel additives, liquid carbon-containing fuels, petroleum industry, etc. Increase the effect of contact

Active Publication Date: 2020-11-24
义乌市君胜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a coal water slurry dispersant in view of the problem that the current coal water slurry dispersant is prone to precipitation after use and the coal slurry is unevenly dispersed.

Method used

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  • A coal-water slurry dispersant

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Experimental program
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Effect test

preparation example Construction

[0030] The preparation method of composite dispersion A includes the following steps:

[0031] (1) Mix potassium humate, KOH, and water at a mass ratio of 5~8:1:20~30, stir for 2~5h at 300~450r / min, stand for 20~24h, take the supernatant, use a concentration of 0.1 Adjust the pH of the mol / L HCl solution to 2~3, let stand for 20~24h, suction filter, take the filter residue and wash it with 2~5 times the mass of the filter residue with deionized water, then move it to 60~75℃ oven to dry to low water content Less than 5%, get dry matter;

[0032] (2) At 28~40℃, take acrylic acid according to the mass ratio of 3:2:30~40, add KOH, water and mix, magnetically stir at 250~400r / min for 25~40min, add 2~5 times the dry matter of acrylic acid to mix , Heat up to 75~85℃, add initiator with 15~20% of acrylic acid quality, heat preservation and react for 2~4h, cool to room temperature naturally, and discharge the material to obtain composite dispersion A.

[0033] The preparation method of comp...

Embodiment 1

[0042] Auxiliary agent: Mix carboxymethyl cellulose, sodium phosphate and maleic anhydride according to the mass ratio of 3:1:0.1 to obtain the auxiliary agent.

[0043] Dopamine solution: Mix dopamine hydrochloride, sodium carbonate, and calcium chloride according to a mass ratio of 6:1:0.1 to obtain a dopamine solution.

[0044] Surfactant: Mix the sodium dodecylbenzene sulfonate and sodium secondary alkyl sulfonate 4:1 in parts by mass to obtain the surfactant.

[0045] Excipients: Mix sodium alginate and dichloroethane according to a mass ratio of 4:3 to obtain auxiliary materials.

[0046] Initiator: ammonium persulfate.

[0047] Solvent A: Mix methanol and ethylenediamine at a mass ratio of 1:3 to obtain solvent A.

[0048] Solvent B: Mix formaldehyde, ammonium carbonate, and water at a mass ratio of 1:2:15 to obtain a solvent.

[0049] The preparation method of composite dispersion A includes the following steps:

[0050] (1) Mix potassium humate, KOH, and water according to the mas...

Embodiment 2

[0061] Additives: Mix carboxymethyl cellulose, sodium phosphate, and maleic anhydride in a mass ratio of 3:2:0.1 to obtain the additives.

[0062] Dopamine solution: Mix dopamine hydrochloride, sodium carbonate, and calcium chloride according to a mass ratio of 6:2:0.1 to form a dopamine solution.

[0063] Surfactant: Take 4:2 parts by mass and mix sodium dodecylbenzene sulfonate and sodium secondary alkyl sulfonate to obtain surfactant.

[0064] Excipients: Mix sodium alginate and dichloroethane according to the mass ratio of 4:6 to obtain auxiliary materials.

[0065] Initiator: sodium persulfate.

[0066] Solvent A: Mix methanol and ethylenediamine at a mass ratio of 4:3 to obtain solvent A.

[0067] Solvent B: Mix formaldehyde, ammonium carbonate, and water at a mass ratio of 1:5:20 to obtain a solvent.

[0068] The preparation method of composite dispersion A includes the following steps:

[0069] (1) Mix potassium humate, KOH, and water at a mass ratio of 8:1:30, stir at 450r / min for...

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Abstract

The invention discloses a dispersing agent for coal water slurry, and belongs to the field of coal water slurry. According to the dispersing agent, 30-55 parts of a composite dispersion acting substance A, 15-25 parts of a composite dispersion acting substance B, 4-10 parts of hydrogenated castor oil, 2-5 parts of an auxiliary, 5-10 parts of a surfactant and 30-50 parts of water are taken; and atthe temperature of 30-45 DEG C, the composite dispersion acting substance A, the hydrogenated castor oil, the auxiliary and the water are taken and mixed in a stirrer, stirring is carried out at a speed of 300-500 r / min for 25-40 minutes, heating is carried out to reach 60-80 DEG C, the surfactant and the composite dispersion acting substance B are added for mixing, and stirring is carried out ata speed of 400-600 r / min for 20-45 minutes so as to obtain the dispersing agent for the coal water slurry. The dispersing agent has the advantage that the problems that the existing dispersing agent for coal water slurry is easy to precipitate after being used, and the coal slurry is not uniformly dispersed can be solved.

Description

Technical field [0001] The invention belongs to the field of coal water slurry, and specifically relates to a coal water slurry dispersant. Background technique [0002] Coal water slurry dispersant refers to the surfactant added in coal water slurry. The coal particles can be stably dispersed in water without stratification and precipitation. Coal-water slurry is generally a low-polluting, high-efficiency, pipeline-transportable coal-based fluid fuel obtained by physical processing of approximately 65% ​​coal, 34% water and 1% additives. It has changed the traditional way of burning coal, showing great environmental protection and energy saving advantages. Especially in recent years, after adopting the technical route of waste recycling, the successfully developed environmentally friendly coal water slurry can greatly improve the environmental benefits of coal water slurry without increasing costs. With the guarantee of my country's abundant coal data, coal water slurry has a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/18C10L1/22C10L1/12C10L1/32C10L10/00C10L10/18
CPCC10L1/1291C10L1/1802C10L1/1817C10L1/221C10L1/326C10L10/00C10L10/18
Inventor 王建东陈建春胡晓玉
Owner 义乌市君胜科技有限公司
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