Coal-aqueous slurry

Details Coal-aqueous slurry Coal-aqueous slurry

1983-07-21

1987-02-24

Dixon, Jr., William R.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

252351, 406 47, 406 49, 406195, 406197, C10L 132

Patent

active

046455140

ABSTRACT:
Coal-aqueous slurries having improved shear stability and lower viscosity are described. The use of a plurality surfactants each having hydrophilic portion with each surfactant hydrophilic portion having a different molecular weight are utilized in sufficient amounts to wet and disperse particulate coal and water. When two surfactants are utilized, coal-aqueous mixtures may be formulated having up to or over 70% by weight coal when the first surfactant has a hydrophilic portion comprising a relatively large number of ethylene oxide units and the second surfactant has hydrophilic portion comprising a relatively small number of ethylene oxide units.

REFERENCES:
patent: 3069361 (1962-12-01), Cogswell
patent: 4242098 (1980-12-01), Braun
patent: 4358293 (1982-11-01), Mark

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