High temperature removal of H2S from reducing gas

Patent · Tue Jun 10 04:00:00 EDT 1980

OSTI ID:5580546

Erickson, D C

High temperature reducing gas is scrubbed of H2S and other gaseous sulfur compounds at high temperature (>8000 K.) in a highly efficient regenerative process. The scrubbing is effected in at least two sequential stages. The first stage scrubbing medium is a molten salt comprised essentially of molten alkali carbonates, sulfides, and hydroxides. The second stage is optionally either a metallic melt comprised of copper or a second molten salt. The copper melt is regenerated with air. The salt melts are regenerated with steam and/or cO2. When two or more salt stages are used, they are regenerated stagewise countercurrently to the scrubbing sequence.

• Assignee: IFI; EDB-82-078830
• Patent Number(s): US 4207298
• OSTI ID: 5580546
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
ADIABATIC PROCESSES
AIR
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATES
CHALCOGENIDES
COPPER
COUNTERFLOW SYSTEMS
EFFICIENCY
ELEMENTS
ENERGY EFFICIENCY
EQUIPMENT
FLUIDS
GASEOUS WASTES
GASES
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROXIDES
METALS
MOLTEN SALTS
OPERATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
REDUCING AGENTS
REGENERATION
REMOVAL
SALTS
SCRUBBERS
SCRUBBING
STEAM
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENTS
WASTES