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A technology for gasifying coal-water slurry and alkali lignin, which can be used in liquid carbon-containing fuels, petroleum industry, fuels, etc. problem, to achieve the effect of good product stability, easy control of reaction conditions and high stability
Inactive Publication Date: 2014-03-26
中国东方电气集团有限公司
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[0012] The present invention aims to solve the problem of poor dispersibility, stability and viscosity-reducing ability of lignin-based coal-water slurry additives in the prior art, resulting in poor fluidity of coal-water slurry, and provides an alkali lignin gasified water-coal Slurry dispersant, improve dispersibility, stability and viscosity-reducing performance, improve the fluidity of coal-water slurry, and meet the fluidity requirements of gasified coal-water slurry
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Embodiment 1
[0042] A coal-water slurry dispersant for alkali lignin gasification, characterized in that it comprises the following raw materials in parts by weight:
[0043] Alkali lignin 100 parts
[0044] 30 parts of carbonyl compounds
[0045] Aldehydes 150 parts
[0046] Sulfonating agent 25 parts
[0047] 200 parts of water;
[0048] The carbonyl compound is a mixture of urea and acetone in any proportion; the aldehyde is a mixture of formaldehyde solution and acetaldehyde solution or a mixture of two in any proportion; the sulfonating agent is sodium sulfite, sodium metabisulfite Or a mixture of one or more of sodium bisulfite.
Embodiment 2
[0050] A coal-water slurry dispersant for alkali lignin gasification, characterized in that it comprises the following raw materials in parts by weight:
[0051] Alkali lignin 100 parts
[0052] Carbonyl compounds 50 parts
[0053] Aldehydes 250 parts
[0054] Sulfonating agent 90 parts
[0055] 400 parts of water;
[0056] The carbonyl compound is a mixture of urea and acetone in any proportion; the aldehyde is a mixture of formaldehyde solution and acetaldehyde solution or a mixture of two in any proportion; the sulfonating agent is sodium sulfite, sodium metabisulfite Or a mixture of one or more of sodium bisulfite.
Embodiment 3
[0058] A coal-water slurry dispersant for alkali lignin gasification, characterized in that it comprises the following raw materials in parts by weight:
[0059] Alkali lignin 100 parts
[0060] 40 parts of carbonyl compounds
[0061] Aldehydes 200 parts
[0062] Sulfonating agent 57.5 parts
[0063] 300 parts of water;
[0064] The carbonyl compound is a mixture of urea and acetone in any proportion; the aldehyde is a mixture of formaldehyde solution and acetaldehyde solution or a mixture of two in any proportion; the sulfonating agent is sodium sulfite, sodium metabisulfite Or a mixture of one or more of sodium bisulfite.
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Abstract
The invention relates to an alkali lignin gasification coal-water slurry dispersing agent and a preparation method thereof, belonging to the field of gasification coal-water-slurry production technology. The alkali lignin gasification coal-water slurry dispersing agent comprises the following raw materials in parts by weight: 100 parts of alkali lignin, 30-50 parts of carbonyl compounds, 150-250 parts of aldehydes, 25-90 parts of sulfonating agent and 200-400 parts of water. According to the alkali lignin gasification coal-water-slurry dispersing agent, alkali lignin is used as a main raw material and urea, acetone, sulfite and the like are used as modifiers, the raw materials are low in cost and easily available. The addition of the alkali lignin gasification coal-water slurry dispersing agent is small when the alkali lignin gasification coal-water slurry dispersing agent is used for preparing gasification coal-water slurry. The alkali lignin gasification coal-water-slurry dispersing agent has no sharp aroma, is dry and powdered, and convenient to store; the high stability advantage of lignin serving as the coal-water slurry dispersing agent is retained, but also the dispersion property can be greatly improved, the liquidity of the coal-water slurry prepared by using the product is obviously better than that of other lignin products, and the alkali lignin gasification coal-water-slurry dispersing agent is especially suitable for the preparation of the gasification coal-water slurry.
Description
technical field [0001] The invention relates to a coal-water slurry dispersant and a preparation method thereof. More specifically, the invention relates to an alkali lignin gasification coal-water slurry dispersant and a preparation method thereof, belonging to the technical field of gasification coal-water slurry production. Background technique [0002] After years of development, CWS dispersants include humic acid-based, lignosulfonate-based, naphthalene-sulfonate-based, polycarboxylic acid-based, polyolefin-based and non-ionic dispersants. Judging from the pulping effect of the dispersant, excellent effect and low cost are often not compatible. With the rapid development of the coal chemical industry, the amount of gasified coal-water slurry is increasing. It belongs to the pulping before the furnace, which requires good fluidity and low preparation cost. Therefore, it is an important subject in the coal-water slurry industry to research and develop a cheap and efficie...
Claims
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Application Information
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