Method of pyrolyzing brown coal

Patent · Tue Aug 06 00:00:00 EDT 1985

OSTI ID:6364309

Michel, W; Heberlein, I; Ossowski, M; Paul, H; Rummel, A; Seher, G

A two-step method and apparatus are disclosed based on the fluidized bed principle, for the production of coke, rich gas and pyrolysis tar, with the object of executing the method in a compact apparatus arrangement, with high energy efficiency and high throughput capacity. This is accomplished by a sequence in which the fine grains removed from the drying vapor mixture are removed from the actual pyrolysis process, and a hot gas, alien to the carbonization, is used as fluidization medium in the pyrolysis reactor, and with a hot gas-high performance separator being used for the dust separation from the pyrolysis gas, with the combustion exhaust gas produced in the combustion chamber being used for the indirect heating of the fluidization medium, for the pre-heating of the gas, which is alien to the carbonization, and for the direct heating in the dryer. The dryer has a double casing in the area of the fluidized bed, and a mixing chamber is arranged directly underneath its initial flow bottom, while the pyrolysis reactor is directly connected to the combustion chamber and the pre-heater.

• Assignee: VEB Schwermaschinenbau ''Karl Liebknecht'' Magdeburg (German Democratic Republic)
• Patent Number(s): US 4533438
• OSTI ID: 6364309
• Resource Relation: Patent Priority Date: Priority date 16 Dec 1983, German Democratic Republic; Other Information: PAT-APPL-562504
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BROWN COAL
FLUIDIZED-BED COMBUSTION
PYROLYSIS
COKE
COMBUSTION PRODUCTS
DRYERS
ENERGY EFFICIENCY
EXHAUST GASES
FLUIDIZED-BED COMBUSTORS
PRODUCTION
PYROLYTIC GASES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTORS
DECOMPOSITION
EFFICIENCY
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASEOUS WASTES
GASES
MATERIALS
OXIDATION
PYROLYSIS PRODUCTS
THERMOCHEMICAL PROCESSES
WASTES
010406* - Coal & Coal Products- Pyrolysis & Cracking- (-1987)