Desulfurization of coal

Patent · Tue Jan 29 00:00:00 EST 1985

OSTI ID:5756110

Sweeney, C T; Bird, J K

A system for desulfurization of sulfur-containing coal comprises apparatus for comminuting sulfur-containing coal, a gas/solid reactor having an inlet and an outlet, a connection or conduit for supplying the comminuted sulfur-containing coal to the reactor inlet, and an oxidant gas generator constructed in accordance with U.S. Pat. No. 4,248,681 connected to supply an oxidant gas to the reactor. The oxidant gas produced from concentrated salt solutions contains substantial amounts of chlorine dioxide, while the oxidant gas produced from dilute salt solutions contains other oxygen-containing gases. The oxidant gas is introduced at pressures which may range from sub-atmospheric to super-atmospheric and the comminuted coal is mixed or agitated to insure efficient gas/solid contact. The oxidant gas oxidizes the sulfur contaminants of the coal to gaseous sulfur oxides which are removed from the reactor. The desulfurized comminuted coal may be slurried for pipeline transmission.

• Assignee: Tetravalent Inc.
• Patent Number(s): US 4496441
• OSTI ID: 5756110
• Resource Relation: Patent File Date: Filed date 17 Aug 1983; Other Information: PAT-APPL-523843
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
CHEMICAL REACTORS
DESULFURIZATION
PULVERIZERS
SULFUR COMPOUNDS
REMOVAL
CHEMICAL REACTIONS
CHLORINE OXIDES
COAL PREPARATION
COMMINUTION
FUEL FEEDING SYSTEMS
OXIDATION
OXIDIZERS
PRESSURE GRADIENTS
SALTS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHLORINE COMPOUNDS
ENERGY SOURCES
FOSSIL FUELS
FUEL SYSTEMS
FUELS
HALOGEN COMPOUNDS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage
010402 - Coal
Lignite
& Peat- Purification & Upgrading