Use of salt hydrates as reversible absorbents of acid gases

Patent · Tue Nov 27 00:00:00 EST 1990

OSTI ID:5174903

Quinn, R; Pez, G P

This patent describes a process for removing acid gases selected from the group consisting of CO{sub 2}, H{sub 2}S, SO{sub 2}, HCN, and COS from a gas mixture containing one or more of the gases and at least one other component. It comprises bringing the gas mixture into contact with a hydrated salt and carrying out the process at a temperature from 0{degrees} to 200{degrees}C whereby the salt hydrate reversibly absorbs the acid gases thereby removing them from the gas mixture.

• Assignee: Air Products and Chemical, Inc., Allentown, PA (USA)
• Patent Number(s): US 4973456; A
• Application Number: PPN: US 7-261653
• OSTI ID: 5174903
• Resource Relation: Patent File Date: 24 Oct 1988
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
54 ENVIRONMENTAL SCIENCES
ADSORBENTS
CHEMICAL COMPOSITION
GASEOUS WASTES
DESULFURIZATION
AIR POLLUTION CONTROL
CARBON DIOXIDE
CARBON OXYSULFIDE
HYDRATES
HYDROCYANIC ACID
HYDROGEN SULFIDES
PURIFICATION
SORPTIVE PROPERTIES
SULFUR DIOXIDE
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
CYANIDES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
SULFIDES
SULFUR COMPOUNDS
SULFUR OXIDES
SURFACE PROPERTIES
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)