Refining comparisons: CTSL (Catalytic Two-Stage Liquefaction), ITSL (Integrated Two-Stage Liquefaction), and H-coal syncrudes

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5755879

Sullivan, R F

Syncrudes produced from Wyodak coal in HRI's Catalytic Two-Stage Liquefaction (CTSL) process were upgraded in pilot plant tests by hydrotreating with Chevron's commercial ICR 106 catalyst. Two CTSL syncrudes were studied: the first had an end point (EP) of about 625/sup 0/F; the second, an EP of about 850/sup 0/F. In this paper, results are compared to those obtained with syncrudes from a single-stage liquefaction process (H-Coal) and another two-stage process (Integrated Two-Stage Liquefaction (ITSL)). The 625/sup 0/F EP CTSL oil was easier to upgrade than the other syncrudes because of its relatively low EP, and low heteroatom and high hydrogen contents. Both of the CTSL syncrudes were upgraded in a single hydrotreating step to diesel fuel, jet fuel, and a naphtha suitable for catalytic reforming. However, for the higher EP syncrude, the preferred refining route also required either a hydrocracking step or a second hydrotreating step. In general, products from two-stage liquefaction processes were easier to upgrade than those from single-stage processes. However, with all of the syncrudes, relatively small increases in EP made the oils more difficult to hydrotreat. Transportation fuels of given boiling ranges made from all of the syncrudes were fairly similar. Mainly, they were composed of cyclic hydrocarbons. There were, however, differences in product distributions, depending on syncrude boiling ranges. The middle-distillate fuels (jet and diesel) had high densities and, therefore, high volumetric energy contents. 9 refs., 6 figs.

• Research Organization: Chevron Research Co., Richmond, CA (USA)
• DOE Contract Number: AC22-76ET10532
• OSTI ID: 5755879
• Report Number(s): CONF-8610362-1; ON: DE88003131
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CATALYSTS
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
COAL LIQUIDS
COAL TAR OILS
CRACKING
DECOMPOSITION
DIESEL FUELS
DISTILLATES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
H-COAL PROCESS
HYDROCRACKING
HYDROGENATION
JET ENGINE FUELS
LIQUEFACTION
LIQUIDS
MATERIALS
NAPHTHA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PROCESSING
PYROLYSIS
REFINING
SUBBITUMINOUS COAL
THERMOCHEMICAL PROCESSES
TSL PROCESS