Catalytic two-stage coal liquefaction process having improved nitrogen removal
- Yardley, PA
A process for catalytic multi-stage hydrogenation and liquefaction of coal to produce high yields of low-boiling hydrocarbon liquids containing low concentrations of nitogen compounds. First stage catalytic reaction conditions are 700.degree.-800.degree. F. temperature, 1500-3500 psig hydrogen partial pressure, with the space velocity maintained in a critical range of 10-40 lb coal/hr ft.sup.3 catalyst settled volume. The first stage catalyst has 0.3-1.2 cc/gm total pore volume with at least 25% of the pore volume in pores having diameters of 200-2000 Angstroms. Second stage reaction conditions are 760.degree.-870.degree. F. temperature with space velocity exceeding that in the first stage reactor, so as to achieve increased hydrogenation yield of low-boiling hydrocarbon liquid products having at least 75% removal of nitrogen compounds from the coal-derived liquid products.
- Research Organization:
- 0778886 INC
- DOE Contract Number:
- AC22-88PC88818
- Assignee:
- HRI, Inc. (Princeton, NJ)
- Patent Number(s):
- US 5045180
- OSTI ID:
- 867963
- Country of Publication:
- United States
- Language:
- English
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Catalytic two-stage coal liquefaction process having improved nitrogen removal
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Related Subjects
-870
/208/
10-40
1500-3500
200-2000
25
3-1
700
75
760
achieve
achieve increased
angstroms
catalyst
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cc
coal
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compounds
concentrations
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containing
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hydrocarbon
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hydrogen
hydrogen partial
hydrogenation
improved
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lb
lb coal
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liquids
liquids containing
low-boiling
low-boiling hydrocarbon
maintained
multi-stage
nitogen
nitrogen
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partial
partial pressure
pore
pore volume
pores
pressure
process
produce
products
psig
psig hydrogen
range
reaction
reaction conditions
reactor
removal
settled
space
space velocity
stage
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stage coal
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temperature
total
two-stage
two-stage coal
velocity
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yield
yields