Separation of ash and char in the formation of carbon black from

Details Separation of ash and char in the formation of carbon black from Separation of ash and char in the formation of carbon black from

1986-02-18

1987-08-25

Heller, Gregory A.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423461, C01B 3102, C09C 148

Patent

active

046892109

ABSTRACT:
A process of separating ash and char and the partial combustion formation fo carbon black from coal wherein coal, fuel and air are introduced at the top of a down draft slagging combustor operating above the melting point of ash so that molten ash aggregates in the combustor and precipitates to the bottom of the combustor. After the molten ash as been precipitated, the remaining carbon black, flue gas and char are conveyed to a char removal chamber where char falls from the flue gas and carbon black. This carbon black and flue gas are then conventionally separated. Oxygen is added to maintain the temperature of the combustor for a sufficient time for the molten ash to aggregate and precipitate. Additionally, a flux such as calcium carbonate can be added to reduce the melting point of the ash.

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Authors: R. Haque, R. K. Chakrabarti, M. L. Dutta, and M. S. Iyengar, "Production of Carbon Black from Assam Coal", Nov. 4, 1971, pp. 421-424, Printed in the Ind. Eng. Chem. Prod. Res. Develop., vol. 10, No. 4, 1971.
Authors: The Babcock and Wilcox Company, New York, pp. 28-2 and 28-3, Steam, Its Generation and Use.
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd ed., vol. 10, 1966.
Considine, Chemical and Process Technology Encyclopedia, 1974, pp. 688 and 689.

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