Refining comparisons: CTSL (Catalytic Two-Stage Liquefaction), ITSL (Integrated Two-Stage Liquefaction), and H-coal syncrudes
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
- Resource Relation:
- Conference: Direct liquefaction contractors' review meeting, Monroeville, PA, USA, 20 Oct 1986; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Refining and upgrading of synfuels from coal and oil shales by advanced catalytic processes. Quarterly report, January-March 1986
Effects of feed boiling range on hydrotreating of Wyodak and Illinois ITSL oils
Related Subjects
COAL LIQUIDS
HYDROGENATION
CATALYSTS
BITUMINOUS COAL
DIESEL FUELS
DISTILLATES
H-COAL PROCESS
HYDROCRACKING
JET ENGINE FUELS
NAPHTHA
REFINING
SUBBITUMINOUS COAL
TSL PROCESS
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
COAL TAR OILS
CRACKING
DECOMPOSITION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
LIQUEFACTION
LIQUIDS
MATERIALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PROCESSING
PYROLYSIS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction