Flue gas desulfurization/denitrification using metal-chelate additives

Patent · Wed Jan 01 00:00:00 EST 1986

OSTI ID:865986

Harkness, John B. L. ^[1]; Doctor, Richard D ^[2]; Wingender, Ronald J ^[3]

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1. Naperville, IL
2. Glen Ellyn, IL
3. Deerfield, IL

A method of simultaneously removing SO.sub.2 and NO from oxygen-containing flue gases resulting from the combustion of carbonaceous material by contacting the flue gas with an aqueous scrubber solution containing an aqueous sulfur dioxide sorbent and an active metal chelating agent which promotes a reaction between dissolved SO.sub.2 and dissolved NO to form hydroxylamine N-sulfonates. The hydroxylamine sulfonates are then separated from the scrubber solution which is recycled.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4612175
• OSTI ID: 865986
• Country of Publication: United States
• Language: English

Related Subjects

flue
gas
desulfurization
denitrification
metal-chelate
additives
method
simultaneously
removing
oxygen-containing
gases
resulting
combustion
carbonaceous
material
contacting
aqueous
scrubber
solution
containing
sulfur
dioxide
sorbent
active
metal
chelating
agent
promotes
reaction
dissolved
form
hydroxylamine
n-sulfonates
sulfonates
separated
recycled
oxide sorbent
simultaneously removing
scrubber solution
metal chelating
gas desulfurization
active metal
solution containing
carbonaceous material
sulfur dioxide
chelating agent
flue gas
flue gases
gases resulting
/423/999/