Materials for Conoco zinc chloride hydrocracking process
Use of zinc chloride to augment hydrogenation of coal and yield a high-octane gasoline product is the most significant feature of a coal liquefaction process being developed by Conoco Coal Development Company. The zinc chloride catalyst is regenerated in a fluidized sand bed, where the spent melt is mixed with air and hydrogen chloride at about 1000/sup 0/C. Recovery is completed at 370/sup 0/C in a condenser, where the zinc chloride is collected and the oxygen and sulfur are separated as H/sub 2/O and SO/sub 2/. The economic viability of the entire process is highly dependent on almost complete recovery of the zinc chloride. The severe environmental conditions of this recovery process cause unique materials problems. Although high-temperature oxidation and sulfidation are being studied in related programs, suitable materials to resist their combined effects along with those of chlorides have not yet been specifically addressed. Common engineering materials, such as the austenitic stainless steels and many nickel-base alloys, are unsuitable because of their inability to tolerate the elevated temperatures and sulfidation, respectively. The objectives of this task are to screen various metallic and ceramic materials for resistance to the zinc chloride recovery system environment and to determine the nature of the attack by exposing coupons to the simulated environment in the laboratory.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5044998
- Report Number(s):
- CONF-801079-2
- Resource Relation:
- Conference: 5. annual conference on materials for coal conversion and utilization, Gaithersburg, MD, USA, 6 Oct 1980
- Country of Publication:
- United States
- Language:
- English
Similar Records
Zinc halide hydrocracking process for distillate fuels from coal. Annual technical progress report for 1975, including the quarter ending January 31, 1976
Zinc halide hydrocracking process for distillate fuels from coal. Quarterly technical progress report, February 1--April 30, 1977. [4 refs]
Related Subjects
36 MATERIALS SCIENCE
ZINC HALIDE PROCESS
MATERIALS
MATERIALS TESTING
COAL
COAL LIQUEFACTION
COATINGS
CORROSIVE EFFECTS
EXPERIMENTAL DATA
GASOLINE
HASTELLOY C
HASTELLOYS
HAYNES 188 ALLOY
HAYNES 25 ALLOY
HYDROCRACKING
HYDROGENATION
INCOLOY 800
INCONEL 600
INCONEL 617
INCONEL 625
PRODUCTION
RECOVERY
STELLITE 6
SULFIDATION
UDIMET ALLOYS
ZINC CHLORIDES
ALLOYS
ALUMINIUM ALLOYS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
COBALT ALLOYS
COBALT BASE ALLOYS
CRACKING
DATA
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY ALLOYS
INCONEL ALLOYS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LIQUEFACTION
LIQUID FUELS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
NUMERICAL DATA
PETROLEUM PRODUCTS
PYROLYSIS
STELLITE
TANTALUM ALLOYS
TESTING
THERMOCHEMICAL PROCESSES
TITANIUM ALLOYS
TUNGSTEN ALLOYS
ZINC COMPOUNDS
ZINC HALIDES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
360105 - Metals & Alloys- Corrosion & Erosion