Process for simultaneously removing nitrogen oxides, sulfur oxides, and particulates
A gas purification process is described comprising the steps of: simultaneously removing nitrogen oxides, sulfur oxides, and particulates in a common vessel from a gaseous stream containing nitrogen oxides, sulfur oxides, and particulates, the sulfur oxide-capturing and particulate-removing material is selected from the group consisting essentially of adsorbers and adsorbers with least one promoter. The adsorbers comprise an oxide of at least one metal selected from the group consisting of aluminum, bismuth, manganese, yttrium, antimony, tin, rare earth metals, Group 1a metals, and Group 2a metals, the nitrogen oxides are substantially removed by a nitrogen oxide-capturing reducing agent, simultaneously removing the particulates and sulfur-containing deposits from the spent material in a regenerator while converting the sulfur-containing deposits to hydrogen sulfide in the regenerator, feeding the regenerated material directly from the regenerator to the bed in the vessel without substantially heating, cooling, or tempering the regenerated material.
- Assignee:
- Amoco Corp., Chicago, IL
- Patent Number(s):
- US 4692318
- OSTI ID:
- 6032591
- Country of Publication:
- United States
- Language:
- English
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Process for simultaneously removing nitrogen oxides, sulfur oxides, and particulates
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTION
ADSORBENTS
AIR POLLUTION CONTROL
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AMMONIA
ANTIMONY
ANTIMONY COMPOUNDS
ANTIMONY OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMICAL REACTORS
CHROMIUM
CONTROL
DENITRIFICATION
DESULFURIZATION
DISPERSIONS
ELEMENTS
GASEOUS WASTES
HYDRIDES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
MANGANESE COMPOUNDS
MANGANESE OXIDES
METALS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PACKED BED
PARTICLES
PARTICULATES
POLLUTANTS
POLLUTION CONTROL
PURIFICATION
RARE EARTH COMPOUNDS
RARE EARTHS
REDUCING AGENTS
REDUCTION
REMOVAL
RHENIUM
SILVER
SORPTIVE PROPERTIES
SULFUR COMPOUNDS
SULFUR OXIDES
SURFACE PROPERTIES
TIN COMPOUNDS
TIN OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM
WASTES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES