Integrated two-stage liquefaction. Topical technical progress report startup of Illinois No. 6 program, October 1, 1981-March 30, 1982

Technical Report · Wed Dec 01 04:00:00 EST 1982

OSTI ID:6231997

Schindler, H D; Chen, J M; Potts, J D

This program combines a research study on Catalytic Expanded Bed Hydro-processing of Coal Extracts and the operation of an Integrated Two-Stage Liquefaction Process Development Unit. The integrated operation with Illinois No. 6 coal was started and the recycle solvent was brought to equilibrium composition during the course of a 54-day LC-Fining run. The integrated process development unit began operation with the second coal of this program, Illinois No. 6, Burning Star Mine. The severity of the SCT reaction was reduced by lowering the outlet temperature from 865/sup 0/F to 830/sup 0/F, and reducing pressure from 2450 psig to 2000 psig. These changes resulted in a heavier SCT product, containing more extract and less distillates. However, a net yield of distillates was maintained. LC-Fining results closely followed Run 3LCF7. Conversion activity was unaffected by catalyst age after the first 300 pound extract feed per pound of catalyst, but some reduction in denitrogenation activity was observed throughout the run. This reduced activity was caused by an increasing nitrogen content in the unconverted extract. Distillate products contained less than 0.2 percent nitrogen throughout the run. Deashing of the extract made from Illinois No. 6 coal was more responsive to changes in antisolvent/feed ratio and antisolvent strength than was the Indiana V extract. Consequently, fewer plugging problems were encountered and deashing performance improved. Extract recoveries of over 80 percent were achieved. After LC-Fining Run 3LCF8 was concluded, several modifications were made to the process development unit to: (a) reduce hold-up time of feeds and recycle streams in holding tanks, (b) reduce emission of coal dust to the building, and (c) install interstage sampling capability in the LC-Fining reaction section.

• Research Organization: Lummus Co., Bloomfield, NJ (USA); Cities Service Research and Development Co., Tulsa, OK (USA). Cities Service Technical Center
• DOE Contract Number: AC22-79ET14804
• OSTI ID: 6231997
• Report Number(s): DOE/ET/14804-8; ON: DE83012754
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CATALYSTS
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
CONSUMPTION RATES
DATA
DEASHING
DENITRIFICATION
DISTILLATION
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
FRACTIONATION
FUNCTIONAL MODELS
HYDROGEN
HYDROGENATION
INFORMATION
LC-FINING
LIQUEFACTION
LIQUIDS
MODIFICATIONS
NONMETALS
NUMERICAL DATA
ORGANIC SOLVENTS
PROCESS DEVELOPMENT UNITS
RECYCLING
SEPARATION PROCESSES
SOLVENTS
THERMOCHEMICAL PROCESSES
TSL PROCESS