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Composite filler taking fine coal gasification slag as raw material, preparation method and application thereof

A composite filler, coal gasification technology, applied in the field of plastic thermal insulation filler, to achieve the effect of improving strength, fine particle size and good dispersibility

Active Publication Date: 2021-12-24
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Up to now, there has been no research on the preparation of plastic insulation fillers from coal gasification fine slag, and there are few studies on the partial treatment of the charcoal existing in the raw material of coal gasification fine slag.

Method used

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  • Composite filler taking fine coal gasification slag as raw material, preparation method and application thereof
  • Composite filler taking fine coal gasification slag as raw material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The method of a porous carbon / mesoporous silica composite filler prepared from coal gasification fine slag as raw material provided in this embodiment is as follows:

[0023] (1) Take 100 g of coal gasification fine slag, add water and dilute it into a coal gasification fine slag slurry with a solid matter fraction of 15 wt %;

[0024] (2) Fully stir the coal gasification fine slag slurry at room temperature with a high-speed dispersion mixer, the stirring speed is 1600r / min, and the stirring time is 40min; after stirring, it is introduced into a screening device, and the large particle solid component is separated by passing through a 200-mesh sieve. Collect the separated slurry under the sieve to obtain the composite slurry;

[0025] (3) get 130ml of concentrated hydrochloric acid of 36wt% and mix with composite slurry, adjust the total volume of mixed slurry by adding water, make the mass fraction of slurry acid be 16wt%, solid matter mass fraction be 20wt%, stir 5h ...

Embodiment 2

[0030] The method of a porous carbon / mesoporous silica composite filler prepared from coal gasification fine slag as raw material provided in this embodiment is as follows:

[0031] (1) Take 100 g of coal gasification fine slag, add water and dilute it into a coal gasification fine slag slurry with a solid matter fraction of 20 wt %;

[0032] (2) Fully stir the coal gasification fine slag slurry at room temperature with a high-speed dispersion mixer, the stirring speed is 1800r / min, and the stirring time is 60min; after stirring, it is introduced into a screening device, and the large particle solid component is separated by passing through a 200-mesh sieve. Collect the separated slurry under the sieve to obtain the composite slurry;

[0033] (3) 130ml of concentrated hydrochloric acid of 36wt% is mixed with the composite slurry, and the total volume of the mixed slurry is adjusted by adding water, so that the mass fraction of the slurry acid is 20wt%, and the solid mass fract...

Embodiment 3

[0038] The method of a porous carbon / mesoporous silica composite filler prepared from coal gasification fine slag as raw material provided in this embodiment is as follows:

[0039] (1) Take 100 g of coal gasification fine slag, add water and dilute it into a coal gasification fine slag slurry with a solid matter fraction of 25 wt %;

[0040](2) Fully stir the coal gasification fine slag slurry at room temperature with a high-speed dispersion mixer, the stirring speed is 2000r / min, and the stirring time is 80min; after stirring, it is introduced into a screening device, and the large particle solid component is separated by passing through a 200-mesh sieve. Collect the separated slurry under the sieve to obtain the composite slurry;

[0041] (3) Get 130ml of 36wt% concentrated hydrochloric acid and mix it with the composite slurry, adjust the total volume of the mixed slurry by adding water, so that the mass fraction of the slurry acid is 22wt%, and the solid mass fraction is ...

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Abstract

The invention relates to a composite filler taking fine coal gasification slag as a raw material, a preparation method and application thereof. The method comprises the following steps: taking fine coal gasification slag, adding water to dilute the fine coal gasification slag to obtain fine coal gasification slag slurry, fully stirring the slurry, passing through a screening device, collecting screened composite slurry, mixing a proper amount of an acid solution with the composite slurry, carrying out an acid dissolution reaction, carrying out solid-liquid separation on the reacted material, washing, drying, and removing carbon to obtain a porous carbon / mesoporous silica composite filler, wherein the prepared composite filler is used for preparing plastic products with thermal insulation performance. The filler disclosed by the invention can be directly used for preparing a plastic product without organic modification, plays a role of a reinforcing agent in the obtained plastic product, improves the strength, hardness, aging resistance and high-temperature stability of the product, improves the thermal insulation performance of the product, and is suitable for industrial production. saves resource cost, achieves development and application of the coal gasification fine slag in the field of heat preservation and heat insulation, and has far-reaching significance.

Description

technical field [0001] The invention relates to a plastic thermal insulation filler, in particular to a plastic thermal insulation filler with coal gasification fine slag as raw material, its preparation method and application. Background technique [0002] Coal gasification is a very important step in the coal chemical process. It can generally be used to produce various clean and environmentally friendly gas fuels. These gas fuels are widely used in daily life, which can effectively reduce environmental pollution and create Clean atmosphere. Coal gasification slag is the gasification residue that is accompanied by coal gasification during the coal gasification process. Coal gasification slag is mainly divided into coarse slag and fine slag. During the gasification process, coal and NH 3 , O 2 、H 2 O, etc. are burned together, and the slag produced by the combustion enters the water chamber and is quenched and dissolved in water to form slag water, which is then discha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K7/24C08K7/26C08L23/12
CPCC08K7/24C08K7/26C08L23/12
Inventor 魏存弟琚安坤许优柳洋
Owner JILIN UNIV
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