Catalysts for upgrading coal-derived liquids. Quarterly report, September 9--December 8, 1977

Technical Report · Wed Dec 21 04:00:00 EST 1977

DOI:https://doi.org/10.2172/6747503· OSTI ID:6747503

Crynes, B. L.

One experimental run conducted to assess the Co--Mo--Al/sub 2/O/sub 3/ catalyst (Nalcomo 474) activity to hydrotreat hydrocarbonization liquid from Union Carbide was prematurely shut down at 92 hours due to reactor plugging. At the Catalyst Life Test Unit two experimental run series with Rasyn oil resulted in premature shut down due to reactor plugging. Hydrotreating operations using Co--Mo--Al/sub 2/O/sub 3/ catalyst (Nalcomo 474) at 700F (371C), 1500 psig and for volume hourly space times of 1.25, 2.00 and 2.50 hours have resulted in reactor shut down within 375 hours of continuous oil-catalyst contact. Under similar operating conditions the hydrotreatment of Rasyn oil using the Ni--Mo--Al/sub 2/O/sub 3/ catalyst (Nalco NM-502) resulted in successful operations of up to 674 hours of continuous oil-catalyst contact before voluntary reactor shut down. Both catalysts, Co--Mo--Al/sub 2/O/sub 3/ (Nalcomo 474) and Ni--Mo--Al/sub 2/O/sub 3/ (Nalco NM-502), have undergone a rapid hydrodenitrogenation activity decay during the first 150 hours of oil-catalyst contact. The hydrodesulfurization activity of the two catalysts also decreases with an increase in the number of hours of oil-catalyst contact (volumes of oil processed). The principal compound types present in the asphaltene strong acids isolated from a COED coal liquid have been identified. Both mass and infrared spectroscopy show that the OH group is the dominant functional group in the acid fraction and reveal the presence of carboxylic acids, the origin of which is not clearly established. The molecular data are consistent with the presence of compounds possessing 1 through 4 hydroxyl groups and up to at least 7 aromatic rings. The IR spectra of the asphaltene neutrals demonstrates that the oxygen-containing compounds in the neutral fraction are not characterized by the presence of OH groups.

• Research Organization: Oklahoma State Univ., Stillwater (USA). School of Chemical Engineering
• OSTI ID: 6747503
• Report Number(s): FE-2011-10
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010403 -- Coal & Coal Products-- Hydrogenation-- (-1987)
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ASPHALTENES
ASPHALTS
BITUMENS
CARBOXYLIC ACIDS
CATALYSTS
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
COBALT
COED PROCESS
CRYOGENIC FLUIDS
DEACTIVATION
ELEMENTS
FLUIDS
HYDROGENATION
INFRARED SPECTRA
LIQUEFACTION
MASS SPECTROSCOPY
METALS
MOLYBDENUM
NICKEL
NITROGEN
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PROCESSING
REFINING
REFRACTORY METALS
REMOVAL
SERVICE LIFE
SPECTRA
SPECTROSCOPY
SULFUR
TAR
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS