Process for the production of carbon monoxide and hydrogen from carbonaceous material

Patent · Tue Apr 22 04:00:00 EST 1986

OSTI ID:5619976

Chen, N Y

A method is described for producing separate streams of hydrogen and carbon monoxide of relatively high purity from a char like product selected from the group consisting of coal, char product of coal solvation, char product of coal volatilization, solid decomposition products of tar sands and oil shale comprising carbonaceous material. The method consists of: passing a char product of fluidizable particle size comprising carbonaceous material and metal deposits which will promote the formation of CO obtained at an elevated temperature to a fluidized char particle carbon monoxide generation zone in admixture with preheated carbon dioxide wherein the primary source of endothermic reaction heat to form CO is supplied by the fluid char particles and the preheated carbon dioxide; maintaining the metal deposit on the char particles in a reducing state by the presence of high CO comcentration; separating a product of the CO generation zone into a carbon monoxide rich stream and an unreacted carbon dioxide rich stream; recovering a portion of the carbon monoxide thus produced as a product of the process; passing another separated portion of the produced carbon monoxide in admixture with steam to catalytic water gas shift reaction zone maintained under conditions to produce hydrogen and carbon dioxide; separating a hydrogen rich stream from a carbon dioxide rich stream produced in the shift reaction zone; recycling carbon dioxide product of the shift reaction zone admixed with CO/sub 2/ separated from the CO product of the CO generator zone through indirect heating zones to heat the mixed CO/sub 2/ stream to an elevated temperature before passing the fluid char particle to the CO generation zone; separating unreacted fluid char particles from the CO generation zone; and passing the separated fluid char particles to a heating zone to maintain the heat of the particles at elevated temperature.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4583993
• OSTI ID: 5619976
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
08 HYDROGEN
080107* -- Hydrogen-- Production-- Coal Gasification
BITUMINOUS MATERIALS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL GASIFICATION
ENERGY SOURCES
EVAPORATION
FLUIDIZATION
FOSSIL FUELS
FUELS
GASIFICATION
HEATING
HYDROGEN PRODUCTION
KINETICS
MATERIALS
OIL SANDS
OIL SHALES
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PHASE TRANSFORMATIONS
PYROLYSIS PRODUCTS
QUANTITY RATIO
REACTION KINETICS
RECYCLING
SIZE
SOLVATION
STEAM
THERMOCHEMICAL PROCESSES
WATER GAS PROCESSES
YIELDS