Inclined fluidized bed system for drying fine coal

Patent · Tue Feb 11 04:00:00 EST 1992

OSTI ID:5349775

Cha, C Y; Merriam, N W; Boysen, J E

This patent describes a process for the drying and stabilizing of fine coal. It comprises: employing a three zone inclined fluidized coal bed with carbon dioxide as the fluidizing medium; using zone one for drying the coal; using zone two for partial pyrolysis of the coal; using zone three for rapid quenching of the coal; and employing a product coal collector. This patent also describes the process wherein the zone three further comprises solidifying the tars blocking the coal micropore space to stabilize the product coal by prohibiting reabsorption of moisture and oxygen. This patent also describes the product produced by the process of claim 50.

• Assignee: Western Research Inst., Laramie, WY (United States)
• Patent Number(s): US 5087269; A
• Application Number: PPN: US 7-563226
• OSTI ID: 5349775
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COAL FINES
COAL PREPARATION
DECOMPOSITION
DRYING
ENERGY SOURCES
FLUIDIZED BEDS
FOSSIL FUELS
FUELS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
THERMOCHEMICAL PROCESSES