Reactor and method for hydrocracking carbonaceous material

Patent · Tue Nov 18 04:00:00 EST 1980

OSTI ID:6799602

Beeson, J L; Dirksen, H A; Duncan, D A; Oberle, R D

Solid, carbonaceous material is cracked in the presence of hydrogen or other reducing gas to provide aliphatic and aromatic hydrocarbons of lower molecular weight for gaseous and liquid fuels. The carbonaceous material, such as coal, is entrained as finely divided particles in a flow of reducing gas and preheated to near the decomposition temperature of the high molecular weight polymers. Within the reactor, small quantities of oxygen containing gas are injected at a plurality of discrete points to burn corresponding amounts of the hydrogen or other fuel and elevate the mixture to high temperatures sufficient to decompose the high molecular weight, carbonaceous solids. Turbulent mixing at each injection point rapidly quenches the material to a more moderate bulk temperature. Additional quenching after the final injection point can be performed by direct contact with quench gas or oil. The reactions are carried out in the presence of a hydrogen-containing reducing gas at moderate to high pressure which stabilizes the products.

• Assignee: Department of Energy
• Patent Number(s): US 4234407
• OSTI ID: 6799602
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010406* -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
04 OIL SHALES AND TAR SANDS
040402 -- Oil Shales & Tar Sands-- Surface Methods
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
CRACKING
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCRACKING
HYDROGEN
MATERIALS
NONMETALS
PYROLYSIS
THERMOCHEMICAL PROCESSES