Manufacture of methane
Patent
·
OSTI ID:7351982
A process is reported for the manufacture of methane by steam reforming of hydrocarbons of 2 to 30 C atoms or their mixtures on nickel catalysts at superatmospheric pressure, and after-treatment of the resulting cracked gases consisting essentially of carbon monoxide and carbon dioxide, hydrogen, methane, and steam, wherein, in a first process stage, in order to produce gases containing methane, the hydrocarbon vapors or their mixtures together with steam are passed under superatmospheric pressure and at temperatures above 250/sup 0/C through the bed of a practically alkali-free supported nickel catalyst produced from the catalyst precursor Ni/sub 6/Al/sub 2/(OH)/sub 16/.CO/sub 3/.4H/sub 2/O, wherein the catalyst precursor is manufactured by precipitating the compound Ni/sub 6/Al/sub 2/(OH)/sub 16/.CO/sub 3/.4H/sub 2/O from aqueous solution, drying it at a temperature of from 80/sup 0/ to 180/sup 0/C, calcining it at a temperature of from 300/sup 0/ to 550/sup 0/C and subsequently reducing it in a stream of hydrogen, with the proviso that between the drying stage and the calcination stage the temperature is raised at a rate in the range from 1.60/sup 0/ to 3.33/sup 0/C/minute, and the reaction products obtained after passing through the first process stage, in which the catalyst has been kept at temperatures from 300/sup 0/ to 500/sup 0/C by the heat of reaction which was liberated, are cooled, and the gases consisting essentially of methane, hydrogen and carbon monoxide and carbon dioxide are passed, in a further catalytic process stage, under superatmospheric pressure and at temperatures of the gas mixtures from 200/sup 0/ to 300/sup 0/C, through a bed of a low temperature naphtha cracking catalyst containing nickel.
- Assignee:
- BASF Aktiengesellschaft
- Patent Number(s):
- US 3950368
- OSTI ID:
- 7351982
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020400 -- Petroleum-- Processing
090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKANES
CATALYTIC EFFECTS
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
HYDROCARBONS
METALS
METHANE
NICKEL
ORGANIC COMPOUNDS
PETROLEUM
REFORMER PROCESSES
STEAM REFORMER PROCESSES
SYNTHESIS
TRANSITION ELEMENTS
020400 -- Petroleum-- Processing
090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKANES
CATALYTIC EFFECTS
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
HYDROCARBONS
METALS
METHANE
NICKEL
ORGANIC COMPOUNDS
PETROLEUM
REFORMER PROCESSES
STEAM REFORMER PROCESSES
SYNTHESIS
TRANSITION ELEMENTS