Coal water slurry composite additive and preparation method thereof

Abstract

The invention discloses a coal water slurry composite additive and a preparation method thereof. The coal water slurry composite additive comprises, by weight, 10-15 parts of acrylic acid and styrenepolymer 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, 5-10parts 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 additive has the advantage that coal water slurry prepared by adopting the coal water slurry additive has high concentration.

Description

technical field [0001] The invention relates to a coal-based liquid fuel, in particular to a coal-water slurry composite additive 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] Th...

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Problems solved by technology

[0004] But, adopt the concentration of the coal-water slurry prepared by this coal-water slurry additive to be still relatively low, need to improve

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