Expanded bed hydroprocessing of solvent refined coal (SRC) extract. Interim technical progress report on Subtask II, recycle operation

Technical Report · Tue May 01 00:00:00 EDT 1979

DOI:https://doi.org/10.2172/5622366· OSTI ID:5622366

Potts, J. D.; Hastings, K. E.; Chillingworth, R. S.

The feasibility of utilizing an expanded bed reactor (LC-Fining Process) for upgrading SRC-I in a recycle model of operation has been demonstrated with respect to conversion of 850/sup 0/F/sup +/ extract and denitrogenation. The objective of this subtask was to demonstrate that equilibrium recycle solvent could be produced without a concurrent accumulation of refractory, recycled 850/sup 0/F/sup +/ material. The recycle run was made in a fashion that provided an exceptionally high conversion of fresh SRC-I material - approx. 87 weight percent. The demanding goal of producing a 0.3 weight percent nitrogen distillate (390 to 850/sup 0/F) was readily achieved at this high conversion level. Equilibrium recycle solvent (500 to 850/sup 0/F) was produced with a 9 weight percent hydrogen content after two consecutive recycle passes. No buildup of refractory material was discernible when recycling a 500/sup 0/F/sup +/ process stream. A calculated catalyst addition rate of one pound of nickel-molybdenum catalyst per ton of moisture free coal gave a gresh SRC-I conversion of 62 weight percent in the recycle mode of operation and 44.5 weight percent in the once-through mode of operation. This catalyst addition rate was effective in producing a superior quality product to that obtained in competing coal hydroliquefaction processes.

• Research Organization: Cities Service Co., Tulsa, OK (USA). Technology Assessment Dept.
• DOE Contract Number: EX-76-C-01-2038
• OSTI ID: 5622366
• Report Number(s): FE-2038-34
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL LIQUIDS
DENITRIFICATION
REFINING
CATALYTIC EFFECTS
COAL LIQUEFACTION
EXPERIMENTAL DATA
GRAPHS
LC-FINING
MOLYBDENUM
NICKEL
SRC PROCESS
TABLES
CHEMICAL REACTIONS
DATA
DATA FORMS
ELEMENTS
INFORMATION
LIQUEFACTION
METALS
NUMERICAL DATA
PROCESSING
REFRACTORY METALS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
010402 - Coal
Lignite
& Peat- Purification & Upgrading