Solids precipitation and polymerization of asphaltenes in coal-derived liquids
The precipitation and removal of particulate solids from coal-derived liquids by adding a process-derived antisolvent 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.
- Assignee:
- HRI Inc.
- Patent Number(s):
- US 4470900
- OSTI ID:
- 6300405
- Resource Relation:
- Patent File Date: Filed date 12 May 1980; Other Information: PAT-APPL-148876
- Country of Publication:
- United States
- Language:
- English
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H-Coal Integrated Pilot Plant, Phase I. Final report, December 1973--June 1976
Quenching hydrocarbon effluent from catalytic reactor to avoid precipitation of asphaltene compounds
Related Subjects
COAL LIQUIDS
DEASHING
DENITRIFICATION
DESULFURIZATION
ADDITIVES
AIR POLLUTION ABATEMENT
ASH CONTENT
ASPHALTENES
ATMOSPHERIC PRESSURE
BOILER FUELS
HYDROCARBONS
NAPHTHA
PARTICULATES
POLYMERIZATION
PRECIPITATION
ASPHALTS
BITUMENS
CHEMICAL REACTIONS
COAL TAR OILS
DISTILLATES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
LIQUIDS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLES
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
POLLUTION ABATEMENT
SEPARATION PROCESSES
TAR
010402* - Coal
Lignite
& Peat- Purification & Upgrading