Reactor for dry flue gas desulfurization

Patent · Tue Apr 29 00:00:00 EDT 1986

OSTI ID:5789531

Camp, J V; Baran, S J

A method is described for cleansing waste stack gases containing sulfur oxides from a generator of such gases, the generator being operable at a predetermined load and a turndown from such load. The method consists of: introducing the waste stack gases into a reaction zone; introducing an aqueous slurry containing an alkaline reagent into the zone for reaction of the reagent with the sulfur oxides, to produce an effluent stream containing precipitated particulate; passing the effluent stream from the reaction zone to a filter zone and filtering the precipitated particulate from the stream in the filter zone; controlling the ratio of aqueous slurry flow to waste stack gases to maintain a relatively dry flow in the filter zone; determining the level of waste stack gas flow velocity required for optimum mixing in the reaction zone of sulfur oxides and alkaline reagent; and varying the area of flow of waste stack gases at the point of introduction of such gases into the reaction zone with turndown in generator load to maintain the gas flow velocity at or near the level.

• Assignee: Proctor and Schwartz, Inc., Horsham, PA
• Patent Number(s): US 4585633
• OSTI ID: 5789531
• Resource Relation: Patent File Date: Filed date 30 Jun 1981
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
FLUE GAS
DESULFURIZATION
SULFUR DIOXIDE
AIR POLLUTION CONTROL
REMOVAL
CHEMICAL REACTORS
FILTERS
FILTRATION
FLOW RATE
GAS FLOW
MIXING
PARTICULATES
PRECIPITATION
REAGENTS
SLURRIES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DISPERSIONS
FLUID FLOW
GASEOUS WASTES
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION CONTROL
SEPARATION PROCESSES
SULFUR COMPOUNDS
SULFUR OXIDES
SUSPENSIONS
WASTES
010800* - Coal
Lignite
& Peat- Waste Management