Fuel and related compositions – Liquid fuels – Aluminum or heavy metal – other than lead – containing
Patent
1979-10-26
1981-08-04
Garvin, Patrick
Fuel and related compositions
Liquid fuels
Aluminum or heavy metal, other than lead, containing
406197, C10L 132
Patent
active
042820065
ABSTRACT:
A pipeline pumpable coal-water slurry having a novel combination of coal particles and carrier water is prepared by a method wherein the particle sizes and their distribution are controlled in accordance with a particle size distribution formula which is especially beneficial for providing a novel coal compact with a minimum amount of void space between particles and a maximum amount of particle surface area with an advantageous amount of colloidal sized particles present. These features combine to enhance the dispersing effects generated by electrolytes and/or dispersing agents selected and added to the coal compact and/or slurry to provide a near maximum zeta potential to the particles in the slurry and to provide low viscosity to the resulting yield pseudoplastic coal-water slurry. Brookfield viscosities obtained, e.g. 1000 cps, or less, at 60 rpm with 75 wt. % coal, dry basis, make the coal-water slurry especially advantageous for transport by pipeline over long distances. The coal-water slurry can be provided at a high coal content so that the slurry can be burned directly without need for dewatering at its destination.
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Alfred University Research Foundation Inc.
Garvin Patrick
Howard J. V.
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