A kind of coal-water slurry additive containing cardanol sulfonate and its application

Abstract

The invention relates to a coal water slurry additive containing cardanol sulfonate. The coal water slurry additive is compounded of cardanol sulfonate and one or more of alkali lignin, lignosulfonate or a formaldehyde condensate of lignosulfonate, a formaldehyde condensate of naphthalene sulfonate, sulfonated acetone-formaldehyde polymer aliphatic-series additives. According to the coal water slurry additive, cardanol sulfonate is creatively adopted as one of components of the coal water slurry additive; the chemical structure of the coal water slurry not only contains polar hydrophilic groups such as sulfonic group and phenolic hydroxyl, but also contains an unsaturated hydrocarbon long-chain nonpolar hydrophobic group containing 15 C atoms, has remarkable synergistic effect after being compounded; therefore, the coal water slurry additive has better suspension dispersion performances in comparison with the coal water slurry additive which is widely used on the market at present; and therefore the coal water slurry additive can be used for preparing relatively stable industrial coal water slurry.

Description

technical field [0001] The invention relates to an additive for liquid carbon-containing fuel, in particular to a coal-water slurry additive containing cardanol sulfonate and application thereof. Background technique [0002] my country is a country short of (petroleum) oil, less (natural) gas, and relatively rich in coal resources. Coal accounts for more than 80% of fossil energy resources, and the situation that coal dominates primary energy is difficult to change for a long time. Coal-water slurry is made by mixing coal powder with a certain graded fineness and water. It contains about 60-70% coal, 0.1-0.3% chemical additives (accounting for dry coal weight ratio), and the rest is water. It is a slurry coal product with certain stability and fluidity that can be pumped over long distances. It is currently mainly used in large-scale alternative fuel oil, and coal chemical industries such as synthetic methanol and ammonia. Because coal water slurry has significant technica...

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Problems solved by technology

[0006] Cardanol sulfonation process and emulsification properties of surfactant products have been reported. As an oil-water system surfactant, cardanol sulfonate can be used in detergents, oil displacing agents and other applications, but has not yet been reported. There are related reports on the application of cardanol sulfonate in the field of solid-liquid suspension dispersants, but cardanol sulfonate has not yet been applied in the field of coal-water slurry additives

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