Preparation of normally liquid hydrocarbons and a synthesis gas to make the same, from a normally gaseous hydrocarbon feed
This patent describes a process for preparing from a normally gaseous hydrocarbon feed a synthesis gas comprising hydrogen and carbon oxides and suitable for the synthesis of normally liquid hydrocarbons therefrom. It includes preheating to a preheat temperature an inlet stream comprising a normally gaseous hydrocarbon feed, H{sub 2}O, oxygen and recycled carbon dioxide obtained as defined below, the preheat temperature being sufficiently high to initiate catalytic oxidation of the feed as defined below: introducing the preheated inlet stream into a first catalyst zone comprising a monolithic body having a plurality of gas flow passages extending therethrough and having a catalytically effective amount of palladium and platinum catalytic components dispersed therein, the amounts of feed, H{sub 2}O and oxygen introduced into the first catalyst zone being controlled to maintain in the inlet stream an H{sub 2}O to C ratio of from about 0.5 to 5 and an O{sub 2} to C ratio of from about 0.4 to 0.65; contacting the preheated inlet stream within the first catalyst zone with the palladium and platinum catalytic components to initiate and sustain therein catalytic oxidation of the feed to produce hydrogen and carbon oxides therefrom, the temperature of at least a portion of the monolithic body being at least about 250{degrees} F. (139{degrees} C.) greater than the ignition temperature of the inlet stream, and oxidizing in the first catalyst zone a quantity, less than all, of the feed, which quantity is sufficient to heat such first zone effluent to an elevated temperature high enough to catalytically steam reform, within a second catalyst zone defined below, the hydrocarbons in such first zone effluent without supplying external heat thereto.
- Assignee:
- Engelhard Corp., Iselin, NJ (United States)
- Patent Number(s):
- A; US 5023276
- Application Number:
- PPN: US 7-300197
- OSTI ID:
- 5768311
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fuel cell electric power production
Method for oxygen addition to oxidative reheat zone of hydrocarbon dehydrogenation process
Related Subjects
080103 -- Hydrogen-- Production-- Steam Reformer Processes
10 SYNTHETIC FUELS
100200* -- Synthetic Fuels-- Production-- (1990-)
CARBON COMPOUNDS
CARBON OXIDES
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL FEEDSTOCKS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
FLUIDS
FUELS
GASES
HYDROCARBONS
HYDROGEN PRODUCTION
LIQUID FUELS
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM
PLATINUM
PLATINUM METALS
PYROLYSIS
RECYCLING
REFORMER PROCESSES
STEAM REFORMER PROCESSES
SYNTHESIS
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS