Process for producing low-sulfur liquid and solid fuels from coa

Details Process for producing low-sulfur liquid and solid fuels from coa Process for producing low-sulfur liquid and solid fuels from coa

1976-10-01

1978-03-07

Gantz, Delbert E.

Mineral oils: processes and products

Phenolic or toxic oils

208 8, 208106, C10G 104

Patent

active

040778665

ABSTRACT:
An improved process for the conversion of coal to low-sulfur products is disclosed wherein coal is heated with a liquid phase coal dissolution solvent, which is preferably a heavy aromatic petroleum solvent, in the presence of a solid, sulfur scavenger such as iron. Improved separation of inorganic solids, including both coal-derived and solvent-derived sulfur combined with the scavenger, is obtained by using a light cycle-oil modified slurry settler operation followed by separation. Vacuum distillation of the filtrate provides a low-sulfur solid which is used directly as fuel or coked to form low-sulfur distillates and coke. The scavenger is separated from other inorganics, regenerated, and recycled. Moderate amounts of fuel gas are also formed.

REFERENCES:
patent: 3502564 (1970-03-01), Hodgson
patent: 3519553 (1970-07-01), Johanson et al.
patent: 3527691 (1970-09-01), Hodgson
patent: 3642608 (1972-02-01), Roach et al.
patent: 3728252 (1973-04-01), Pitchford
patent: 3813329 (1974-05-01), Gatsis
patent: 3840456 (1974-10-01), Yavorsky et al.
patent: 3856675 (1974-12-01), Sze et al.
patent: 3923634 (1975-12-01), Silvestri et al.
patent: 3930984 (1976-01-01), Pitchford

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