Solids precipitation and polymerization of asphaltenes in coal-d

Details Solids precipitation and polymerization of asphaltenes in coal-d Solids precipitation and polymerization of asphaltenes in coal-d

1980-05-12

1984-09-11

Kaplan, G. L.

Mineral oils: processes and products

Refining

208 8LE, 208 10, C10G 100, B01D 2100

Patent

active

044709005

ABSTRACT:
The precipitation and removal of particulate solids from coal-derived liquids by adding a process-derived anti-solvent liquid fraction and continuing the precipitation process at a temperature above the melting point of the mixed liquids for sufficient time to allow the asphaltenes to polymerize and solids to settle at atmospheric pressure conditions. The resulting clarified light hydrocarbon overflow liquid contains less than about 0.02 W % ash and is suitable as turbine fuel or as boiler fuel for burning without particulate emission control equipment. An underflow liquid fraction containing less than about 0.1 W % solids along with low sulfur and nitrogen concentrations is suitable as a boiler fuel with emission control equipment.

REFERENCES:
patent: 3519554 (1970-07-01), Stotler
patent: 3791956 (1974-02-01), Gorin et al.
patent: 3856675 (1974-12-01), Sze et al.
patent: 3954595 (1976-05-01), Sze et al.
patent: 3974073 (1976-10-01), Sze et al.
patent: 4028221 (1977-06-01), Sze et al.
patent: 4040958 (1977-08-01), Rammler
patent: 4090957 (1978-05-01), Leonard

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