Catalyst assessment for upgrading short contact time SRC to low sulfur boiler fuels

Conference · Mon Jan 01 04:00:00 EST 1979 · Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States)

OSTI ID:5270472

Shih, S S; Angevine, P J; Heck, R H; Sawruk, S

Short contact time SRC can be upgraded via catalytic hydroprocessing into low sulfur boiler fuels. However, the solid SCT SRC feedstock requires solvent dilution to reduce its viscosity. Furthermore, even for a 50 wt % W. Kentucky SCT SRC blend, all pilot units lines and valves have to be heat-traced above 350/sup 0/F in order to achieve smooth mechanical operations. Catalytically, the SCT SRC is more susceptible to form an inhomogeneous product than the regular SRC, particularly where small pore catalysts are used. The upgrading costs can be significantly reduced through increased activity as well as efficient hydrogen utilization. A proprietary catalyst, Mobil HCL-2, and a developmental catalyst, Amocat 1A, were observed to have these two important properties. For hydroprocessing of the 50 wt % W. Kentucky SCT SRC blend, the aging rate was moderate with a 2 to 3/sup 0/F/day of temperature rise required to keep constant desulfurization activity. The catalysts are believed to be deactivated by coke and metal depositions on the surface. A large buildup of iron and titanium was found in a narrow band of the catalyst exterior of a a spent catalyst. Improved catalyst aging in likely to occur by the use of an ebullated bed reactor, primarily by decreased interparticle coke formation as well as by mild abrasion of metal contaminants.

• Research Organization: Mobil Research and Development Corp., Paulsboro, NJ
• OSTI ID: 5270472
• Report Number(s): CONF-800303-P4
• Conference Information: Journal Name: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States) Journal Volume: 25:1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
BOILER FUEL
CATALYSTS
CHEMICAL REACTIONS
COAL LIQUEFACTION
COMPARATIVE EVALUATIONS
CRYOGENIC FLUIDS
DATA
DATA FORMS
DEACTIVATION
ELECTRON MICROSCOPY
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
FUELS
GRAPHS
HYDROGENATION
INFORMATION
LIQUEFACTION
MICROSCOPY
NITROGEN
NONMETALS
NUMERICAL DATA
OXYGEN
PERFORMANCE TESTING
PROCESSING
REFINING
REMOVAL
SOLVENT-REFINED COAL
SULFUR
TABLES
TESTING
THERMOCHEMICAL PROCESSES