Flue gas desulfurization/denitrification using metal-chelate additives

Patent · Tue Dec 31 23:00:00 EST 1985

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
• 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

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