Existing technology transfer report: second-stage support. [SRC hydrotreating catalysts]
Since the economics of SRC hydrotreating depends greatly on both catalyst life and the type of reactor system, an extensive research program was initiated to address several issues pertaining to the design and operation of a large-scale SRC hydrotreater, including catalyst activity and aging, reactor design, and catalyst replacement rate. The objectives of this program were to (1) study the hydrotreating of SRC in an upflow fixed-bed reactor, (2) study the hydrotreating of SRC in a downflow fixed-bed reactor, (3) compare the performances of upflow and downflow fixed-bed reactors, (4) study the fluid dynamics of upflow and downflow fixed-bed reactors, and (5) study the activity, selectivity, and aging of a specially prepared monolithic catalyst for hydroprocessing SRC. APCI focused its work on the fixed-bed reactor, since it was conventionally used in hydrotreating petroleum products. The active materials used to prepare the catalysts were metals selected from Groups VI and VIII of the periodic table. Catalysts such as cobalt-molybdenum, nickel-molybdenum, and nickel-tungsten supported on alumina were tested. These catalysts are usually poisoned by the ash present in coal-derived materials. Therefore, another aspect of the internally funded program was to develop an ash-tolerant catalyst to successfully hydrotreat SRC. An ash-tolerant catalyst was prepared by supporting the catalytic metals on a honeycomb (monolithic) structure. The honeycomb structure was thought to be extremely ash resistant because of its high geometric surface area per unit volume and large open cross-sectional area. Furthermore, liquid flow in the channels of the honeycomb was expected to be laminar, with little or no induced turbulence due to form friction. Activity of the so-called ash-tolerant honeycomb (monolithic) catalyst was measured for SRC hydrotreating in a catalytic fixed-bed reactor, using both upflow and downflow operating modes. 2 references, 14 figures, 6 tables.
- Research Organization:
- Air Products and Chemicals, Inc., Allentown, PA (USA)
- DOE Contract Number:
- AC05-78OR03054
- OSTI ID:
- 6523556
- Report Number(s):
- DOE/OR/03054-117; ON: DE85001637
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HYDROGENATION
CATALYSTS
SRC PROCESS
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHEMICAL REACTORS
COAL LIQUIDS
COBALT
CONVERSION
DYNAMICS
EXPERIMENTAL DATA
FLUID FLOW
MOLYBDENUM
NICKEL
PACKED BED
POISONING
TECHNOLOGY TRANSFER
TUNGSTEN
CHEMICAL REACTIONS
DATA
ELEMENTS
FLUIDS
INFORMATION
LIQUIDS
MECHANICS
METALS
NUMERICAL DATA
TRANSITION ELEMENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction