Extended end-point distillate fuels from shale oil by hydrotreating coupled with catalytic dewaxing
It is generally accepted that shale oils derived by either surface or in situ retorting of western oil shale require relatively severe hydrotreatment as a consequence of their high oxygen, nitrogen and olefin contents. However, the hydrotreated syn crudes so produced typically possess pour points on the order of 20-30/sup 0/C which may require transport in heated pipelines. In addition distillates derived from the hydrotreated shale oil may also be unacceptable as jet and diesel fuels as a consequence of their poor low temperature fluidity characteristics. The authors report here a relatively simple process modification which overcomes these problems, i.e., addition of a shape-selective ZSM-5 dewaxing reactor in series with the conventional hydrotreating reactor. This process scheme is shown to be operative without interstage separation of light products from the hydrotreater including ammonia. Processing conditions for the dewaxing reactor are compatible with those of the hydrotreater. Surprisingly low levels of zeolite acidity are required for substantial pour point reduction. As a result of such processing, naphthas with octanes higher than those typically obtained by hydrocracking are produced in addition to a high yield of extended end point distillate which meets essentially all requirements for acceptable diesel fuel.
- Research Organization:
- Mobil Research and Development Corp., Princeton, New Jersey 08540, and Paulsboro, NJ
- OSTI ID:
- 5602249
- Report Number(s):
- CONF-860425-
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 31:1; Conference: 191. American Chemical Society national meeting, New York, NY, USA, 13 Apr 1986
- Country of Publication:
- United States
- Language:
- English
Similar Records
Upgrading of coal liquids: upgrading distillates from coal liquefaction. Annual report, January 31, 1978-January 31, 1979
Upgrading of coal liquids. Interim report: hydrotreating and reforming Exxon Donor Solvent (EDS) Process derived naphthas
Related Subjects
10 SYNTHETIC FUELS
DIESEL FUELS
CHEMICAL PREPARATION
NAPHTHA
SHALE OIL
DEWAXING
HYDROGENATION
AMMONIA
ANTIKNOCK RATINGS
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL REACTION YIELD
CHEMICAL REACTORS
FLUID FLOW
HYDROCRACKING
IN-SITU RETORTING
JET ENGINE FUELS
OIL SHALES
PETROLEUM
PETROLEUM DISTILLATES
PH VALUE
POUR POINT
ZEOLITES
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL TAR OILS
CRACKING
DECOMPOSITION
DISTILLATES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDRIDES
HYDROGEN COMPOUNDS
IN-SITU PROCESSING
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERAL OILS
MINERALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PROCESSING
PYROLYSIS
RETORTING
SEPARATION PROCESSES
SYNTHESIS
THERMOCHEMICAL PROCESSES
YIELDS
040403* - Oil Shales & Tar Sands- Refining
040600 - Oil Shales & Tar Sands- Products & By-Products
090121 - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)