EDS coal liquefaction process development phase IV. Quarterly technical progress report January 1--March 31, 1978
A solvent quality study with Wyoming subbituminous coal in the 50 pound-per-day Recycle Coal Liquefaction Unit (RCLU-1) showed that Wyoming coal conversion and liquid yield are strongly dependent on Solvent Quality Index (SQI). Coal conversion and liquid yield are essentially independent of solvent quality above about 4 SQI. As SQI decreases below 4, both conversion and liquid yield decrease dramatically. A fundamental model of coal liquefaction was formulated in terms of a minimum number of lumped components and the corresponding kinetic reaction equations. The improved fundamental solvent hydrogenation model was used in conjunction with the EDS Process Model to study the effects of EDS process conditions on the donatable hydrogen and saturates content of the recycle solvent during steady state operation. A run was begun in the Integrated Coking/Gasification Pilot Plant (IKG) on Illinois coal liquefaction bottoms. A study of the factors affecting preferred location of a Commercial EDS Plant feeding Illinois coal was completed. The EDS Liquefaction Process Variables Study reported earlier established a preferred reactor residence time of 40 minutes. Design work was completed covering new and modified equipment required to adapt the Baytown FLEXICOKING prototype unit for coal liquids service. Semi-quantitative data on the concentrations of polynuclear aromatic (PNA) compounds in flue gases from the combustion of Illinois coal liquids found: (1) total PNA level was in the range reported for conventional fuels; (2) fluoranthene, which is not considered to be carcinogenic, accounted for 88% of the measurable PNA's. A review of block valves for slurry service identified three valve designs with the highest probability of satisfactory service.
- Research Organization:
- Exxon Research and Engineering Co., Florham Park, NJ (USA)
- DOE Contract Number:
- EF-77-A-01-2893
- OSTI ID:
- 6502375
- Report Number(s):
- FE-2893-12; SF-2KW-78
- Country of Publication:
- United States
- Language:
- English
Similar Records
EDS coal liquefaction process development: Phase IIIA. Monthly technical progress report, June 1--June 30, 1977
EDS coal liquefaction process development. Phase IV. Quarterly technical progress report, October 1-December 31, 1978
Related Subjects
CHEMICAL REACTORS
SCALING
COAL LIQUEFACTION PLANTS
ECONOMICS
ENGINEERING
OPTIMIZATION
SITE SELECTION
VALVES
COAL LIQUIDS
COMBUSTION
HYDROGENATION
REFINING
EXXON LIQUEFACTION PROCESS
MATHEMATICAL MODELS
PILOT PLANTS
MOLYBDENUM
CATALYTIC EFFECTS
NICKEL
ORGANIC SOLVENTS
RESIDUES
COKING
GASIFICATION
COAL LIQUEFACTION
DESIGN
HYDROGEN PRODUCTION
POLYCYCLIC AROMATIC HYDROCARBONS
YIELDS
AROMATICS
CARBONIZATION
CHEMICAL REACTIONS
CONTROL EQUIPMENT
DECOMPOSITION
ELEMENTS
EQUIPMENT
FLOW REGULATORS
FUNCTIONAL MODELS
HYDROCARBONS
INDUSTRIAL PLANTS
LIQUEFACTION
METALS
ORGANIC COMPOUNDS
OXIDATION
PROCESSING
REFRACTORY METALS
SOLVENTS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction