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Coal water slurry and preparation method thereof

A technology of coal water slurry and coal powder, which is applied in the petroleum industry, liquid carbon-containing fuel, fuel, etc., and can solve the problem of low concentration of coal water slurry

Inactive Publication Date: 2019-04-05
宁波敬业控股集团有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] But, the concentration of this coal-water slurry is still low, needs to be improved

Method used

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  • Coal water slurry and preparation method thereof
  • Coal water slurry and preparation method thereof
  • Coal water slurry and preparation method thereof

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preparation example Construction

[0045] A preparation method of composite additive, comprising the steps of:

[0046] Step 1: According to parts by weight, weigh sodium salt of acrylic acid and styrene polymer, octylphenol polyoxyethylene ether, polyacrylamide, sodium polyacrylate, hydroxyethyl cellulose, gum arabic, inorganic salt, pH regulator, Defoamer, emulsifier, bactericide;

[0047] Step 2: Mix all components evenly.

[0048] Examples 6-10 are used to illustrate the components of coal water slurry. The components of embodiment 6-10 coal water slurry are shown in Table 2.

[0049] The component table of table 2, embodiment 6-10 coal-water slurry

[0050]

[0051] Note: % refers to mass fraction;

[0052] Coal powder is obtained by grinding Shenhua coal; the parameters of Shenhua coal are as follows: M ad 10.5wt%, A d 6.79wt%, V daf 35.42wt%, FC ad 53.37wt%, C ad 66.76wt%, H ad 3.48wt%, N ad 0.86wt%, S t，ad 0.37wt%, Q b，ad 26.42MJ / Kg. The particle size of coal powder is 88.64 μm.

[005...

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Abstract

The invention discloses coal water slurry and a preparation method thereof. The coal water slurry is composed of 60-70wt% of coal powder, 29-39wt% of water and 0.5-1.5wt% of composite additive, and the composite additive comprises, by weight, 10-15 parts of acrylic acid and styrene polymer sodium salt, 45-50 parts of octaphenyl polyoxyethylene ether, 3-5 parts of polyacrylamide, 3-5 parts of sodium polyacrylate, 3-5 parts of hydroxyethyl cellulose, 5-10 parts of Arabic gum, 5-10 parts of inorganic salt, 10-15 parts of pH regulator, 1-3 parts of defoamer, 1-3 parts of emulsifier and 1-3 parts of sterilizing agent. The coal water slurry has the advantage of high concentration.

Description

technical field [0001] The invention relates to coal-based liquid fuel, in particular to a coal-water slurry and a preparation method thereof. Background technique [0002] Under the protection of my country's rich coal resources, coal water slurry has also become the most basic and economical clean energy to replace oil, gas and other energy sources. However, coal is a hydrophobic substance, and coal-water slurry is a suspension of coarse particles. Even coal types that are easy to make slurry and have a particle size distribution with high accumulation efficiency are difficult to make slurry. In order to ensure normal use, CWS should have low viscosity, low water separation rate, good fluidity and stability. At the same time, based on atomization and combustion efficiency and economic factors, CWS should have higher coal content and lower pulping cost. Adding additives to coal water slurry is an effective way to solve the above problems. [0003] The Chinese patent with...

Claims

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Application Information

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IPC IPC(8): C10L1/32
CPCC10L1/326
Inventor 戴天珍
Owner 宁波敬业控股集团有限公司
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