Modified dry limestone process for control of sulfur dioxide emissions

Patent · Tue Aug 24 00:00:00 EDT 1976

OSTI ID:862624

Shale, Correll C ^[1]; Cross, William G ^[1]

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1. Morgantown, WV

A method and apparatus for removing sulfur oxides from flue gas comprise cooling and conditioning the hot flue gas to increase the degree of water vapor saturation prior to passage through a bed of substantially dry carbonate chips or lumps, e.g., crushed limestone. The reaction products form as a thick layer of sulfites and sulfates on the surface of the chips which is easily removed by agitation to restore the reactive surface of the chips.

• Research Organization: MERC
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 3976747
• Application Number: 05/584,424
• OSTI ID: 862624
• Country of Publication: United States
• Language: English

Related Subjects

modified
dry
limestone
process
control
sulfur
dioxide
emissions
method
apparatus
removing
oxides
flue
gas
comprise
cooling
conditioning
hot
increase
degree
water
vapor
saturation
prior
passage
bed
substantially
carbonate
chips
lumps
crushed
reaction
products
form
thick
layer
sulfites
sulfates
surface
easily
removed
agitation
restore
reactive
thick layer
removing sulfur
sulfur oxide
sulfur oxides
easily removed
water vapor
sulfur dioxide
reaction product
reaction products
flue gas
active surface
reactive surface
substantially dry
dry carbon
/423/