Fluidizing coal tar sludge

Details Fluidizing coal tar sludge Fluidizing coal tar sludge

1987-01-02

1988-07-19

Dixon, Jr., William R.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

241 21, C10L 132

Patent

active

047582464

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 mixed with a suitable coal tar solvent 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 are reduced in size and can be recirculated to a 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: 2408810 (1946-10-01), Puening
patent: 3420456 (1969-01-01), Von Eiff et al.
patent: 3915394 (1975-10-01), Ferguson, Sr.
patent: 4149854 (1979-04-01), Kohn
patent: 4579563 (1986-04-01), Burnside

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