Coal pyrolysis process

Patent · Tue Jul 28 00:00:00 EDT 1981

OSTI ID:5752408

Green, N W

Method and apparatus for pyrolyzing agglomerative coals which comprises introducing a fluidized bed of hot char particles into a pyrolysis chamber or reactor, and injecting upwardly into the chamber a high velocity jet of agglomerative coal particles in a carrier gas, the fluidized hot char particles surrounding the high velocity coal jet and heating the coal particles to yield gaseous products and char. The hot char particles in the fluidized state and disposed around the coal jet are entrained in the upwardly expanding coal jet and mixed with the coal particles , so that by the time the coal particles contact the pyrolysis chamber wall, such coal particles being heated by the char have passed through the tacky state and are no longer tacky and do not adhere to the chamber wall. The gaseous product and char formed during pyrolysis are rapidly removed from the pyrolysis chamber, and such char can be separated, E.G. In a cyclone, reheated and introduced into the fluidized bed of char particles as a fresh source of heat. The hot char particles from the fluidized bed which are entrained in the coal jet are removed from the pyrolysis chamber with the gaseous product, without any appreciable recirculation or mixing of such entrained char particles back into the fluidized char within the pyrolysis chamber.

• Assignee: Occidental Research Corp
• Patent Number(s): US 4280876
• OSTI ID: 5752408
• Resource Relation: Patent File Date: Filed date 14 Aug 1979
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
PYROLYSIS
AGGLOMERATION
CYCLONE SEPARATORS
EQUIPMENT
FLUIDIZED BED
HEAT RECOVERY
PARTICLES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CONCENTRATORS
DECOMPOSITION
ENERGY RECOVERY
ENERGY SOURCES
FOSSIL FUELS
FUELS
INERTIAL SEPARATORS
MATERIALS
POLLUTION CONTROL EQUIPMENT
RECOVERY
SEPARATION EQUIPMENT
THERMOCHEMICAL PROCESSES
010406* - Coal & Coal Products- Pyrolysis & Cracking- (-1987)