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A kind of environment-friendly coal-water slurry and preparation method thereof

An environmentally friendly water and coal slurry technology, applied in the field of coal chemical industry, can solve the problems of high environmental hazards, refractory degradation, environmental hazards, etc., and achieve the effects of reducing production costs, improving stability, and saving consumption

Active Publication Date: 2019-11-12
FUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is high-concentration, refractory, and environmentally harmful wastewater. If it is not treated and discharged randomly, it will cause great harm to the environment.

Method used

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  • A kind of environment-friendly coal-water slurry and preparation method thereof

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preparation example Construction

[0039] A kind of preparation method of environment-friendly coal-water slurry of the present invention, realizes by following steps:

[0040] (1) Add casing processing wastewater and inorganic alkali into the reaction tank, start stirring, and heat up;

[0041] (2) React for 1 to 5 hours when the temperature rises to 80°C to 120°C;

[0042] (2) Then add acrylic acid and its ester waste water and initiator, and control the temperature at 80°C to 100°C to react for 1 to 3 hours after the addition;

[0043] (4) Put the above-mentioned reaction product together with coal powder and dispersant into a rod mill and mix, grind ore for 5-10 minutes, then grind ore in a ball mill for 5-10 minutes, and discharge to obtain coal water slurry.

Embodiment 1

[0046] A kind of environment-friendly coal-water slurry of the present invention is made of the raw material components of following proportioning by weight:

[0047] Casing processing waste water 180 parts

[0048] Sodium hydroxide 0.6 parts

[0049] Acrylic acid and its ester wastewater 180 parts

[0050] Ammonium persulfate 0.02 parts

[0051] Lignite coal powder 637.88 parts

[0052] 1.5 parts of sodium naphthalenesulfonate formaldehyde condensate.

[0053] A kind of preparation method of environment-friendly coal-water slurry of the present invention, realizes by following steps:

[0054] (1) Add 180 parts of casing processing wastewater and 0.6 parts of sodium hydroxide into the reaction tank, start stirring, and heat up;

[0055] (2) React for 1.5 hours when the temperature rises to 85°C;

[0056] (2) Then add 180 parts of acrylic acid and its ester waste water and 0.02 parts of ammonium persulfate, and control the temperature at 90°C for 1.5 hours after the addit...

Embodiment 2

[0059] A kind of environment-friendly coal-water slurry of the present invention is made of the raw material components of following proportioning by weight:

[0060] Casing processing waste water 150 parts

[0061] Sodium hydroxide 1.5 parts

[0062] Acrylic acid and its ester wastewater 165 parts

[0063] Ammonium persulfate 0.03 part

[0064] Lignite coal powder 681.47 parts

[0065] 2 parts of sodium methylnaphthalenesulfonate formaldehyde condensate.

[0066] A kind of preparation method of environment-friendly coal-water slurry of the present invention, realizes by following steps:

[0067] (1) Add 150 parts of casing processing wastewater and 1.5 parts of sodium hydroxide into the reaction tank, start stirring, and heat up;

[0068] (2) React for 2 hours when the temperature rises to 98°C;

[0069] (2) Then add 165 parts of acrylic acid and its ester wastewater and 0.03 part of ammonium persulfate, and after the addition, control the temperature and react at 95°C ...

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Abstract

The invention provides environmentally-friendly coal water slurry and a preparation method thereof, and the preparation method is achieved by the following steps: (1) adding casing processing wastewater and an inorganic alkali into a reaction tank, starting stirring, and heating; (2) when temperature is risen to 80 DEG C-120 DEG C reacting for 1 to 5 hours; (2) adding acrylic acid and ester wastewater and an initiator, and controlling the temperature at 80 DEG C to 100 DEG C for reacting for 1 to 3 hours after the addition; (4) adding a product, coal powder and a dispersing agent together intoa rod mill for mixing, grinding for 5 to 10 minutes, then milling in a ball mill for 5 to 10 minutes, and then discharging to obtainthe coal water slurry. The coal water slurry is prepared from the casing processing wastewater, the acrylic acid and ester wastewater, the coal, the dispersing agent dispersant, and the like, can effectively consume the casing processing wastewater, and provides a new method for the treatment of the casing processing wastewater.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to an environment-friendly coal-water slurry and a preparation method thereof. Background technique [0002] Casing is a tough translucent film made by scraping the large and small intestines of livestock. It is mainly used as a coat for stuffing sausages and enemas. It will generate a lot of wastewater in the process of irrigation and watering of casings. The wastewater is rich in animal protein, fat, etc., and is a high-salt, highly water-soluble organic wastewater that is difficult to degrade. Although the existence of these substances is non-toxic and harmless, if they are directly discharged into rivers or lakes in large quantities for a long time without timely and effective treatment, it will cause the reduction of oxygen content in the water body and deteriorate the water quality. [0003] Acrylic acid and its esters are important polymer monomers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/32C10L1/196
CPCC10L1/196C10L1/1963C10L1/326
Inventor 刘明华刘以凡刘剑锋陈珍喜林春香
Owner FUZHOU UNIV