SRC-I coal refinery. Task 3C. Liquid fuels and clean coke production

Technical Report · Tue Jul 31 04:00:00 EDT 1979

OSTI ID:5518462

This study summarizes the results of the technical and economic analysis of the process design to produce distillate liquids from Two-Stage Liquefaction of coal (TSL). The TSL Process for making distillate hydrocarbon liquids - by combining a thermal hydrocracking step, such as SRC-I, with a catalytic hydrotreating step - has some unique advantages: process flexibility; selectivity of the desired liquid products; and minimal hydrogen consumption, as compared to one-step coal liquefaction. CE-Lummus has conducted development work to determine the optimum conditions for conversion of SRC-I, as well as for desulfurization and denitrification. The work demonstrated that LC-Fining is capable of converting SRC-I to a heavy syncrude, with conversion as high as 85%+. The proprietary LC-Fining correlations for processing petroleum residua are directly applicable for processing coal-derived extracts. Stable operations have been achieved in both once-through and recycle operations. The distillate products would be lower in sulfur and nitrogen as compared to other coal liquefaction products. The production of liquid fuels by LC-Fining of SRC-I permits the switching of oil-fired boilers from low sulfur petroleum fuels to extremely low-sulfur coal-derived fuels without installing expensive stack gas scrubbing equipment. The demonstrated utility of SRC-I as a base for formcoke binder suggests an integration between the SRC-I and Clean Coke processes whereby SRC-I supplants the hydrogenation of Clean Coke. SRC-I processing would yield - in addition to fuel and binder - light-oil and naphtha fractions which could be processed, together with the corresponding carbonization oils, to produce the light aromatics and tar acids that result from conventional Clean Coke operation. The basic integrated processing scheme is shown in block flow form.

• Research Organization: Southern Co. Services, Inc., Birmingham, AL (USA)
• DOE Contract Number: ET-78-C-05-3054
• OSTI ID: 5518462
• Report Number(s): ORO-3054-T4(Pt.C)
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
BINDERS
BOILERS
CHEMICAL REACTIONS
CLEAN COKE PROCESS
COAL LIQUEFACTION
COAL LIQUIDS
CRACKING
CRYOGENIC FLUIDS
DECOMPOSITION
DEMONSTRATION PLANTS
DESULFURIZATION
ELEMENTS
FLUIDS
FORMED COKE PROCESSES
FUEL SUBSTITUTION
FUELS
HYDROCRACKING
INDUSTRIAL PLANTS
LC-FINING
LIQUEFACTION
LIQUID FUELS
NITROGEN
NONMETALS
PETROLEUM REFINERIES
PROCESSING
PYROLYSIS
REFINING
REMOVAL
RESIDUES
RETROFITTING
SOLVENT-REFINED COAL
SRC PROCESS
SULFUR
THERMOCHEMICAL PROCESSES