Catalytic two-stage coal liquefaction process having improved nitrogen removal
This patent describes a process for catalytic multi-stage hydrogenation of coal to produce low- boiling hydrocarbon liquid and gaseous products containing minimal nitrogen compounds. It comprises feeding particulate coal and a hydrocarbon slurrying oil at temperature below about 650{degrees} F. into a pressurized first stage catalytic reaction zone containing coal-derived liquid and hydrogen and an ebullated bed of particulate hydrogenation catalyst, the catalyst having at least about 25% of its total pore volume contained in pores having diameter larger than 150 Angstroms; passing the coal-oil slurry and hydrogen upwardly through the first stage ebullated bed of particulate catalyst, the catalyst bed being maintained at 700-800{degrees} F. temperature, and 1500-3500 psig hydrogen partial pressure and at space velocity of 10-40 lb coal/hr ft{sup 3} catalyst settled volume, so as to rapidly heat the coal and catalytically hydrogenate it and recycled solvent oil to produce a partially hydrogenated and hydroconverted coal-derived material; withdrawing the partially hydrogenated coal-derived material containing gas and liquid fractions from the first stage reaction zone.
- Assignee:
- HRI, Inc., Princeton, NJ (United States)
- Patent Number(s):
- US 5045180; A
- Application Number:
- PPN: US 7-509126
- OSTI ID:
- 5804795
- Country of Publication:
- United States
- Language:
- English
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10 SYNTHETIC FUELS
100200 -- Synthetic Fuels-- Production-- (1990-)
CATALYSTS
CATALYTIC CONVERTERS
CHEMICAL REACTIONS
COAL GASIFICATION
COAL LIQUEFACTION
COAL LIQUIDS
CRACKING
DECOMPOSITION
DISPERSIONS
EBULLATED BED
ENERGY SOURCES
EQUIPMENT
FISCHER-TROPSCH
FISCHER-TROPSCH/MOBIL PROCESS
FLUIDS
FOSSIL FUELS
FUEL SLURRIES
FUELS
GASIFICATION
HYDROCARBONS
HYDROCRACKING
HYDROGENATION
LIQUEFACTION
LIQUIDS
MIXTURES
MOBIL PROCESS/
ORGANIC COMPOUNDS
PARTICLES
PARTICULATES
PETROLEUM
PETROLEUM FRACTIONS
POLLUTION CONTROL EQUIPMENT
PYROLYSIS
SEPARATION PROCESSES
SLURRIES
SOLIDS
SUSPENSIONS
THERMOCHEMICAL PROCESSES