Apparatus and method for the removal of nitrogen dioxide from a flue gas stream
AssigneeALSTOM Technology Ltd
InventorsErik W. Böös, Wuyin Wang
Life of this patent
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Abstract
Disclosed herein is an apparatus comprising an absorption chamber; a flue gas stream inlet, the flue gas stream inlet being operative to dispose a flue gas stream in the absorption chamber, wherein the flue gas stream comprises nitrogen dioxide; an absorbing agent inlet, the absorbing agent inlet being operative to dispose an absorbent agent in the absorption chamber, the absorbing agent comprising an absorbing agent compound and a solvent, wherein the absorbing agent is chemically reactive with nitrogen dioxide to absorb nitrogen dioxide from the flue gas stream, forming a reaction product.
Claims21
An apparatus comprising:
- an absorption chamber;
- a flue gas stream inlet, the flue gas stream inlet being operative to dispose a flue gas stream in the absorption chamber, wherein the flue gas stream comprises nitrogen dioxide;
- an absorbing agent inlet, the absorbing agent inlet being operative to dispose an absorbent agent in the absorption chamber, the absorbing agent comprising an absorbing agent compound and a solvent, wherein the absorbing agent is chemically reactive with nitrogen dioxide to absorb nitrogen dioxide from the flue gas stream, forming a reaction product.
A method comprising:
- contacting a flue gas stream comprising nitrogen dioxide with an absorbing agent comprising an absorbing agent compound, an oxidation additive, and a solvent, wherein the absorbing agent is chemically reactive with nitrogen dioxide to absorb nitrogen dioxide from the flue gas stream;
- to convert nitrogen oxide to nitrogen dioxide;
- forming a reaction product comprising the absorbing agent and nitrogen dioxide;
- and
- separating the reaction product from the flue gas stream.
(canceled)
Dependencies are inferred from the claim text.