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Composite coal slurry dispersant used in coal chemical engineering field

A dispersant and coal chemical technology, which is applied in the field of formulated chemicals, can solve the problems of poor applicability of coal types, difficulty in making lignite coal into slurry, etc., and achieve the effect of improving hydrophobic performance and improving hydrophobic performance

Active Publication Date: 2016-02-03
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems encountered by existing coal slurry dispersants such as poor applicability of coal types and difficulty in slurrying lignite coal types, the present invention provides a coal slurry dispersant with good slurryability for more coal types. agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Get coal dust 60g, its internal water content 2.85%, total water content 12.68%, add a certain amount of composite coal slurry dispersant solution, its composition is:

[0020] 8% sodium lignosulfonate;

[0021] 10% naphthalenesulfonate formaldehyde condensate;

[0022] 20% modified polymethacrylate copolymer;

[0023] 4% sulfonated tannins;

[0024] 2% sodium nitrohumate;

[0025] 0.4% OP-10;

[0026] 0.1% dodecyldimethylbenzyl ammonium chloride;

[0027] 0.7% polyacrylic acid;

[0028] 0.3% bishydroxyethylglycine;

[0029] 0.6% thiourea;

[0030] The remainder is water;

[0031] Add tap water to the coal sample mixed with dispersant solution until the coal slurry concentration reaches 60%. The actual concentration of the coal-water slurry is 60.38% and the viscosity is 710cP, which meets the performance standard of the viscosity of the coal-water slurry <1000cP.

Embodiment 2

[0033] Get coal dust 60g, its internal water content 2.85%, total water content 12.68%, add a certain amount of composite coal slurry dispersant solution, its composition is:

[0034] 30% naphthalenesulfonic acid-styrene-maleic acid terpolymer;

[0035] 35% modified polymethacrylate copolymer;

[0036] 5% tannic acid;

[0037] 12% sulfonated phenolic resin;

[0038] 3% OP-10;

[0039] 2% TWEEN-60;

[0040] 0.5% bicine;

[0041] 1% EDTA;

[0042] 0.2% thiourea;

[0043] The remainder is water;

[0044] Add tap water to the coal sample mixed with dispersant solution until the coal slurry concentration reaches 64%. The actual concentration of the coal-water slurry is 63.92%, and the viscosity is 980cP, which reaches the performance standard of the viscosity of the coal-water slurry <1000cP.

Embodiment 3

[0046] Get coal dust 60g, its internal water content 2.85%, total water content 12.68%, add a certain amount of composite coal slurry dispersant solution, its composition is:

[0047] 20% naphthalenesulfonic acid-styrene-maleic acid terpolymer;

[0048] 20% naphthalenesulfonate formaldehyde condensate;

[0049] 12% sulfonated tannins;

[0050] 2% sulfonated phenolic resin;

[0051] 1.2% OP-10;

[0052] 1.8% AEO-20;

[0053] 0.8% polyacrylic acid;

[0054] 0.6% EDTA;

[0055] 0.8% thiourea;

[0056] The remainder is water;

[0057]Add tap water to the coal sample mixed with dispersant solution until the coal slurry concentration reaches 61%. The actual concentration of the coal-water slurry is 61.47%, and the viscosity is 770cP, which reaches the performance standard of the viscosity of the coal-water slurry <1000cP.

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Abstract

The invention discloses a composite coal slurry dispersant used in the coal chemical engineering field. The composite coal slurry dispersant is composed of the following components in percentage by weight: 35 to 65% of dispersant main agent, 5 to 25% of viscosity reducer, 0.5 to 5% of surface modifier, 0.5 to 2.5% of metal ion chelating agent, 0.2 to 2% of corrosion inhibitor, and 0.5 to 58.8% of water; wherein the dispersant main agent is one or more of naphthalene sulfonate formaldehyde condensate, acrylic acid-allyl polyoxyethylene ether-sodium styrene sulfonate ternary copolymer, naphthalene sulfonic acid-styrene-maleic acid ternary copolymer, sodium lignin sulfonate, and modified polymethacrylate copolymer, the viscosity reducer is one or more of tannic acid, sulfonated tannin, sulfonated phenolic resin, and sodium nitrohumate, the surface modifier is one or more of dodecyl dimethyl benzyl ammonium chloride, OP-10, AEO-20, SP-40, and TWEEN-60, the metal ion chelating agent is one or more of polyacrylic acid, dihydroxyethyl glycine, and EDTA, and the corrosion inhibitor is benzotriazole and / or thiourea. The coal slurry dispersant is nontoxic, safe, and environment-friendly, and has a wide temperature and application range and good slurry-forming property.

Description

technical field [0001] The invention belongs to the field of coal-based new materials in coal chemical industry, and relates to a formula chemical that can be used for preparing coal-water slurry in chemical processes such as coal-to-methanol and coal gasification. Background technique [0002] my country is rich in coal reserves, and coal resources account for more than 65% of my country's energy consumption. The traditional combustion method of coal has many problems such as ash, pollution, and insufficient combustion. Coal-water slurry is a low-pollution, high-efficiency, pipeline-transportable oil-substituting coal-based fluid fuel obtained by physical processing of about 65% coal, 34% water and 1% dispersant. Coal is processed into water Coal slurry has the advantages of stable combustion and less pollution. It has changed the traditional way of burning coal, showing great advantages in environmental protection and energy saving. [0003] The coal slurry dispersant is...

Claims

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Application Information

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IPC IPC(8): C10L1/24C10L1/196C10L1/188C10L1/23C10L1/222C10L1/232C10L1/32C10L1/10
Inventor 赵迎秋靳晓霞胡兴刚孙继王会侯洋
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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