Fuel and related compositions – Liquid fuels – Aluminum or heavy metal – other than lead – containing
Patent
1985-04-15
1986-04-01
Harris-Smith, Y.
Fuel and related compositions
Liquid fuels
Aluminum or heavy metal, other than lead, containing
241 21, C10L 132
Patent
active
045795630
ABSTRACT:
A method and apparatus fluidizes solid deposits of coal tar sludge, such as coal tar decanter sludge or coal tar tank sludge to a relatively homogeneous mixture of solids dispersed in liquid. The coal tar decanter sludge received from the coke oven, including approximately 10 to 50% by weight coal and coke solids, is conveyed into a sludge mixing vessel where it is deposited onto a liquid-permeable support member or screen having a predetermined maximum screen size. A suitable coal tar solvent in the sludge mixing vessel is heated to a temperature sufficient to partially solubilize and reduce the viscosity of the coal tar portion of the coal tar decanter sludge to provide a pumpable dispersion of solids dispersed in a diluted coal tar mixture. Agglomerates of coal and coke solids held together with coal tar fall through the screen when sufficient coal tar has solubilized and the solid agglomerates then are reduced in size for recirculation to the sludge mixing vessel. The diluted coal tar mixture is pumped to recirculate it to the sludge mixing vessel after impacting and shearing the solid agglomerates to reduce the solids particle size.
REFERENCES:
patent: 1390232 (1921-09-01), Bates
patent: 4149854 (1979-04-01), Kohn
Burnside Kenneth D.
Deer, III Daniel C.
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