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
- Resource Relation:
- Patent File Date: 16 Apr 1990
- Country of Publication:
- United States
- Language:
- English
Similar Records
Catalytic two-stage liquefaction of coal utilizing cascading of used ebullated-bed catalyst
Catalytic two-stage coal hydrogenation process using extinction recycle of heavy liquid fraction
Related Subjects
10 SYNTHETIC FUELS
COAL LIQUEFACTION
FISCHER-TROPSCH/MOBIL PROCESS
COAL LIQUIDS
SEPARATION PROCESSES
FISCHER-TROPSCH
MOBIL PROCESS/
PETROLEUM FRACTIONS
CATALYSTS
CATALYTIC CONVERTERS
COAL GASIFICATION
EBULLATED BED
FUEL SLURRIES
HYDROCARBONS
HYDROCRACKING
HYDROGENATION
LIQUIDS
PARTICULATES
SOLIDS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DISPERSIONS
ENERGY SOURCES
EQUIPMENT
FLUIDS
FOSSIL FUELS
FUELS
GASIFICATION
LIQUEFACTION
MIXTURES
ORGANIC COMPOUNDS
PARTICLES
PETROLEUM
POLLUTION CONTROL EQUIPMENT
PYROLYSIS
SLURRIES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
010408* - Coal
Lignite
& Peat- C1 Processes- (1987-)
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
100200 - Synthetic Fuels- Production- (1990-)
010500 - Coal
Lignite
& Peat- Products & By-Products