Solids recovery from coal liquefaction slurry

Details Solids recovery from coal liquefaction slurry Solids recovery from coal liquefaction slurry

C - Chemistry, Metallurgy

10

G

196/12

C10G 1/04 (2006.01)

Patent

CA 1070631

ABSTRACT OF THE DISCLOSURE A process for removing mineral matter from a solubilized coal slurry while retaining the asphaltenes with the coal solution in which the slurry is agitated with an alkanolamine or other hydrophilic agglomer- ating agent in the presence of an aromatic solvent or a polyvinyl alcohol, to form relatively large agglomerates which contain substantially all of the mineral matter, the undissolved coal, the agglomerating agent and some entrained coal solution and which can be separated rapidly from the coal solution by gravity settling. The agglomerates can then be washed with a solvent to recover entrained coal solution, which can in turn be dis- tilled to recover solvent, a high boiling coal solution and agglomerating agent for recycling.

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