Coal gasification. Two-stage coal combustion process

Journal Article · Thu Mar 01 04:00:00 EST 1973 · Chem. Eng. Prog.; (United States)

OSTI ID:7355861

Karnavas, J A

The two-stage coal combustion process is being developed by Applied Technology Corp. under the sponsorship of the Environmental Protection Agency. In the first stage, coal is dissolved in a mass of molten iron, where fixed carbon and sulphur are retained and the volatiles crack and come off as CO and H/sub 2/. The dissolved carbon is gasified in the second stage by reaction with combustion air to yield additional CO in the off-gas. The sulphur migrates to a lime-bearing slag floating on the molten iron to form calcium sulphide, which, together with the coal-ash, is continuously removed. It is desulphurized with steam to yield elemental sulphur and slag which has road aggregate applications. Experimental results and a flow diagram are given and process economics show that the process yields electric power with operating costs comparable to existing plants without SO/sub 2/ pollution of the atmosphere.

• OSTI ID: 7355861
• Journal Information: Chem. Eng. Prog.; (United States), Journal Name: Chem. Eng. Prog.; (United States) Vol. 69:3; ISSN CEPRA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AIR POLLUTION
BY-PRODUCTS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
DIAGRAMS
ECONOMICS
ENERGY SOURCES
FLOWSHEETS
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION
POWER PLANTS
REMOVAL
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS