Recycle of hydrogenated sulfur plant tail gas to sour gas scrubbing system

Patent · Tue Jan 10 04:00:00 EST 1984

OSTI ID:6945539

Zeller, R; Belloni, A; Heisel, M

In a process for the separation of at least carbon dioxide and hydrogen sulfide from a raw gaseous mixture to form a purified gaseous mixture comprising passing said gas through a sour gas removal system including the steps of scrubbing said gaseous mixture with a liquid scrubbing agent having a higher affinity for hydrogen sulfide than for carbon dioxide, removing from said system an off-gas enriched in hydrogen sulfide, and passing said off-gas to a sulfur recovery system comprising the conversion of sulfur values to elemental sulfur and the recovery of a tail gas containing hydrogen sulfide and sulfur dioxide, the improvement which comprises hydrogenating said tail gas to convert sulfur dioxide to hydrogen sulfide and recycling resultant hydrogenated tail gas to said sour gas removal system, whereby essentially no hydrogen sulfide or sulfur dioxide is discharged into the environment.

• Assignee: Linde Aktiengesellschaft (Germany, Federal Republic Of)
• Patent Number(s): US 4425317
• OSTI ID: 6945539
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
ALCOHOLS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL PLANTS
CHEMICAL REACTIONS
CLAUS PROCESS
ELEMENTS
EQUIPMENT
EXHAUST GASES
EXTRACTION APPARATUSES
EXTRACTION COLUMNS
FLUIDS
GASEOUS WASTES
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
MANAGEMENT
MATERIALS RECOVERY
METHANOL
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
PROCESSING
PURIFICATION
RECOVERY
RECYCLING
SCRUBBERS
SCRUBBING
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SORPTIVE PROPERTIES
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SURFACE PROPERTIES
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTES