Production of methane-rich gas stream. [partial oxidation of hydrocarbonaceous fuel followed by methanation of CO and H/sub 2/ produced]
Patent
·
OSTI ID:7291745
Improved process for the production of a methane-rich product gas stream comprising the following steps: partial oxidation of a hydrocarbonaceous fuel feed employing a H/sub 2/O/fuel weight ratio of 2.2 to 2.9 and an atomic ratio of oxygen in the substantially pure oxygen to carbon in the fuel of 0.80 to 0.84 to produce a process gas stream comprising principally H/sub 2/, CO, and CH/sub 4/ in which the mole ratio H/sub 2//CO is 1 to 2.5, the mole percent CH/sub 4/ is 15 or more, and the particulate carbon is 13 weight percent (basis carbon in the fuel) or less; cooling the process gas stream and separating H/sub 2/O, CO/sub 2/, carbon, and gaseous impurities; reacting together the H/sub 2/ and CO in said process gas stream in a catalytic methanation zone to produce a methane-rich gas stream principally comprising CH/sub 4/ and containing gaseous members selected from the group consisting of H/sub 2/, CO, H/sub 2/O, CO/sub 2/, and mixtures thereof; and removing said H/sub 2/O and CO/sub 2/ to produce a methane-rich product gas stream comprising about 93 mole percent of CH/sub 4/. By means of the subject invention there is produced a high heating value clean fuel gas or a substitute natural gas of about 960 BTU per SCF or more. (auth)
- Assignee:
- Texaco Inc.
- Patent Number(s):
- US 3927998
- OSTI ID:
- 7291745
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010500 -- Coal
Lignite
& Peat-- Products & By-Products
02 PETROLEUM
020500 -- Petroleum-- Products & By-Products
04 OIL SHALES AND TAR SANDS
040600 -- Oil Shales & Tar Sands-- Products & By-Products
090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COBALT COMPOUNDS
COBALT OXIDES
CRYOGENIC FLUIDS
ELEMENTS
ENERGY SOURCES
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
HIGH BTU GAS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGEN
MEDIUM PRESSURE
METHANATION
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PARTIAL OXIDATION PROCESSES
QUANTITY RATIO
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
010500 -- Coal
Lignite
& Peat-- Products & By-Products
02 PETROLEUM
020500 -- Petroleum-- Products & By-Products
04 OIL SHALES AND TAR SANDS
040600 -- Oil Shales & Tar Sands-- Products & By-Products
090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COBALT COMPOUNDS
COBALT OXIDES
CRYOGENIC FLUIDS
ELEMENTS
ENERGY SOURCES
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
HIGH BTU GAS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGEN
MEDIUM PRESSURE
METHANATION
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PARTIAL OXIDATION PROCESSES
QUANTITY RATIO
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS