Sulfur removal and comminution of carbonaceous material

Patent · Tue Oct 04 00:00:00 EDT 1988

OSTI ID:6780699

Narain, N K; Ruether, J A; Smith, D N

A method is described of removing sulfur during the comminution of carbonaceous material comprising: forming a slurry including the carbonaceous material in aqueous, alkali-containing solution, increasing the temperature and pressure of the slurry to at least the critical temperature and pressure of steam; abruptly reducing the pressure to explosively comminute the carbonaceous material and release sulfur containing gases; separating the alkali from the comminuted carbonaceous material.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4775387
• OSTI ID: 6780699
• Resource Relation: Patent File Date: Filed date 7 Oct 1987
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
DESULFURIZATION
ALKALI METAL COMPOUNDS
CARBONACEOUS MATERIALS
COMMINUTION
FUEL SLURRIES
HEATING
PRESSURIZING
CHEMICAL REACTIONS
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
MIXTURES
SLURRIES
SUSPENSIONS
010300* - Coal
Lignite
& Peat- Preparation- (1987-)