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Production of instant water-gas slurry

A production method and technology of coal water slurry, which is applied in the direction of combustion method, petroleum industry, block/powder fuel preparation, etc., can solve the problem that the stability of coal water slurry cannot be guaranteed, colloidal structure cannot be obtained, dry coal powder oxidation, etc. problems, to achieve the effect of improving the production environment, eliminating coal dust, and eliminating oxidation

Inactive Publication Date: 2007-09-05
陕西升基利科技有限公司
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Raw coal is easily oxidized after dry grinding into coal powder. Since the surface of the oxidized coal particles has become a polar surface, it cannot absorb the hydrophobic groups of additives, so a relatively stable colloidal structure cannot be obtained. As a result, the prepared water-coal The slurry cannot guarantee good stability and low viscosity, and these two indicators are also the most critical indicators of the quality of CWS
Even if the method of preparing coal-water slurry and then adding dry coal powder is adopted, there is also the problem that the added dry coal powder is oxidized. At the same time, it is necessary to achieve a uniform and sufficient mixture of dry coal powder and slurry difficulty

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The raw coal is put into a hammer crusher for crushing, the particle size of the obtained raw coal is controlled to be less than 0.5 cm, and 180 kg of the raw coal is weighed. Use 0.5 kg of sodium dodecylaminopropene, 1.5 kg of sodium dodecylbenzene sulfonate, 0.2 kg of sodium polystyrene sulfonate, 0.2 kg of triethanolamine, FeSO 4 0.2 kg, 0.2 kg of coal tar, configured into an additive solution with a volume of 9.6 liters. Spray the additive solution evenly on 180 kg of raw coal, then feed the coal into a ball mill, turn on the ball mill for grinding, and control the particle size of the pulverized coal to an average of 60 μm, collect the powdered product and seal it for packaging, and then obtain the instant instant powder of the present invention CWS.

Embodiment 2

[0022] Control raw coal particle size according to embodiment 1 and be less than 0.5cm, take by weighing 1500 kilograms of raw coal, modify sodium sulfonate 17 kilograms, sodium phosphate 1 kilogram, sodium citrate 1.7 kilograms, polystyrene sodium sulfonate 1.2 kilograms Kilograms are configured into an additive solution with a volume of 73.6 liters. The additive is evenly sprayed on 1500 kg of raw coal, followed by ball milling, and the average particle size of the pulverized coal is controlled to be 52 μm.

Embodiment 3

[0024] According to Example 1, the raw coal particle size is controlled to be less than 0.5cm, and 200 kilograms of raw coal are weighed, and 1 kilogram of sodium lignosulfonate, 1 kilogram of polyoxyethylene monostearate, 1 kilogram of sulfonated humic acid salt, CaCl 2 0.3 kg, 0.3 kg of sodium hydroxide, and 0.2 kg of sodium polystyrene sulfonate are configured into 12 liters of additive solution. The additive is evenly sprayed on 200 kg of raw coal, followed by ball milling, with an average particle size of 50 μm.

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Abstract

Production of quick-dissolving powdered water gas slurry is carried out by mixing various additive solutions with raw material coal proportionally, delivering mixed materials into ball mill, and dry grinding to obtain the final product. It has better stability, shorter working time, less producer and consumption and higher efficiency.

Description

technical field [0001] The invention belongs to the field of carbon-containing fuels, in particular to a production method of instant powder-state coal-water slurry. Background technique [0002] At present, the coal-water slurry used in industry is all fluid type, and there are many reports about the coal-water slurry aspect, but basically all about the fluid-type coal-water slurry aspect, as Chinese patent CN85102891, Chinese patent CN1364857 all discloses a The invention discloses a preparation method of a fluid type coal-water slurry, which mainly comprises firstly dry-grinding raw coal into powder, and then adding water and additives to wet-grind into a slurry. The production process of this fluid-type fuel is relatively complicated, and the production cost is high; in addition, for the fluid-type coal-water slurry, there are high requirements in terms of storage and transportation. The applicant believes that if the coal-water slurry is made into a solid with excellen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32F23K1/02
Inventor 吕家根张岩张兵
Owner 陕西升基利科技有限公司
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