Fluidized coal pyrolysis apparatus

Patent · Tue Jul 27 04:00:00 EDT 1982

OSTI ID:6690932

Green, N W

Method and apparatus are claimed for pyrolyzing agglomerative coals. The method 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 4341598
• OSTI ID: 6690932
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010406* -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
ADHESION
AGGLOMERATION
CARBONACEOUS MATERIALS
CARRIERS
CHARS
CHEMICAL REACTIONS
COAL
CONCENTRATORS
CYCLONE SEPARATORS
DECOMPOSITION
ENERGY SOURCES
ENTRAINMENT
EQUIPMENT
EXPANSION
FLUIDIZED BED
FLUIDS
FOSSIL FUELS
FUELS
GASES
INERTIAL SEPARATORS
INJECTION
INTAKE
JETS
MATERIALS
NOZZLES
PARTICLES
POLLUTION CONTROL EQUIPMENT
PYROLYSIS
PYROLYSIS PRODUCTS
RECYCLING
SEPARATION EQUIPMENT
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES