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A kind of organic/inorganic composite coal water slurry additive

An inorganic composite and coal-water slurry technology, which is applied in the field of coal-water slurry additives, can solve the problems of affecting the stability effect, the thixotropic effect of sodium carboxymethylcellulose coal-water slurry is not obvious, and the use efficiency is reduced. A wide range of effects that are conducive to pipeline transportation and improve efficiency

Inactive Publication Date: 2015-09-30
江苏合义化工新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when sodium carboxymethyl cellulose is used alone, the interaction between sodium carboxymethyl cellulose molecules will lead to a decrease in use efficiency and affect the stabilization effect.
At the same time, the effect of sodium carboxymethyl cellulose on improving the thixotropy of coal water slurry is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Prepare sodium carboxymethyl cellulose intercalated montmorillonite, the specific method is as follows:

[0027] (1) Prepare the montmorillonite into a suspension and heat it to 80°C;

[0028] (2) Add an aqueous solution of sodium carboxymethylcellulose, wherein the mass ratio of water: sodium carboxymethylcellulose: montmorillonite is 15:3:1;

[0029] (3) Stir and reflux the above mixture at a constant temperature for 3 hours at 80°C;

[0030] (4) Filtration, the filter cake is washed with water, dried, crushed, pulverized, and sieved.

[0031] An organic / inorganic composite coal-water slurry additive is prepared by mixing 10 g of sodium carboxymethyl cellulose into montmorillonite, 5 g of glass fiber powder, 35 g of sodium lignosulfonate, and 50 g of water and stirring evenly. Slurry with the above mixture and then use NaOH to adjust the pH value to 8.0.

Embodiment 2

[0033] Prepare sodium carboxymethyl cellulose intercalated montmorillonite, the specific method is as follows:

[0034] (1) Prepare the montmorillonite into a suspension and heat it to 80°C;

[0035] (2) Add an aqueous solution of sodium carboxymethylcellulose, wherein the mass ratio of water: sodium carboxymethylcellulose: montmorillonite is 20:4:1;

[0036] (3) Stir and reflux the above mixture at a constant temperature for 3 hours at 80°C;

[0037] (4) Filtration, the filter cake is washed with water, dried, crushed, pulverized, and sieved.

[0038] An organic / inorganic composite coal water slurry additive is prepared by mixing 15g sodium carboxymethyl cellulose intercalated montmorillonite, 1g glass fiber powder, 39g sodium naphthalenesulfonate formaldehyde condensate, and 45g water to stir evenly. Slurry with the above mixture and then use Na 2 CO 3 Adjust the pH to 8.0.

Embodiment 3

[0040] Prepare sodium carboxymethyl cellulose intercalated montmorillonite, the specific method is as follows:

[0041] (1) Prepare the montmorillonite into a suspension and heat it to 85°C;

[0042] (2) Add an aqueous solution of sodium carboxymethylcellulose, wherein the mass ratio of water: sodium carboxymethylcellulose: montmorillonite is 18:4:1;

[0043] (3) The above mixture was stirred and refluxed at a constant temperature for 3 hours at 85°C;

[0044] (4) Filtration, the filter cake is washed with water, dried, crushed, pulverized, and sieved.

[0045] An organic / inorganic composite coal water slurry additive is prepared by mixing 12g sodium carboxymethyl cellulose intercalated montmorillonite, 3g glass fiber powder, 40g sodium naphthalenesulfonate formaldehyde condensate, and 45g water to stir evenly. Slurry with the above mixture and then use Na 2 CO 3 Adjust the pH to 8.0.

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Abstract

The invention provides an organic / inorganic composite coal water mixture additive. The organic / inorganic composite coal water mixture additive is obtained in the mode that sodium carboxymethyl cellulose is intercalated into montmorillonite layers and compounded with glass fiber powder and sulfonate dispersing agents. The organic / inorganic composite coal water mixture additive comprises 10-15% of odium carboxymethyl cellulose intercalation montmorillonite, 1-5% of the glass fiber powder, 35-40% of the sulfonate dispersing agents, an appropriate amount of pH conditioning agents and 45-50% of purified water. By the adoption of the organic / inorganic composite coal water mixture additive, coal water mixtures is prepared, and stripping of the montmorillonite is achieved simultaneously; the interaction between sodium carboxymethyl cellulose molecules is reduced, and the use efficiency and stabilization effect of the organic / inorganic composite coal water mixture additive are improved; meanwhile, other components have collaborative effects of preventing aggregation of coal particles, improving the stability of the coal water mixtures and improving the thixotropic properties of the coal water mixtures; the organic / inorganic composite coal water mixture additive has the advantages that the additive is applicable to various types of coal, mixture forming is easy, and the dispersity, stability and theological properties of coal slurry are excellent.

Description

technical field [0001] The invention relates to a coal water slurry additive, in particular to a new formula of an organic / inorganic composite coal water slurry additive. Background technique [0002] With its unique natural energy, coal has become a place of competition for efficient development and utilization of governments around the world. In particular, facing the increasingly tense situation of global oil resources, scientists around the world have actively explored economically feasible clean coal technology as one of the important means of energy conservation, emission reduction and efficient use of energy. A large number of practices at home and abroad have proved that coal water slurry (CWM) technology is a reliable and economically feasible means of large-scale coal utilization. [0003] CWM is a high-concentration, multi-component and multi-phase coal / water dispersion system made by dispersing coal powder with a certain particle size distribution in an aqueous ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/32C10L1/30C10L1/12
Inventor 沈健章峻黄晓华
Owner 江苏合义化工新材料有限公司
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