FIELD: gas industry.
SUBSTANCE: present invention relates to systems intended for removing nitrogen oxides from gas. In the claim, a method for removing NOx oxides from gas stream is described, including stages of: passing gas stream through a catalyst layer that removes NOx using zeolite as catalyst subjected to ion exchange with iron and adding ammonia as restorative reagent, where a ratio of number of NH3 moles to number of NOx moles is more than 1.33.
EFFECT: invention allows for reducing NOx amount in gas.
11 cl
| Title | Year | Author | Number |
|---|---|---|---|
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|
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|
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| REMOVING LAUGHING GAS IN MANUFACTURE OF NITRIC ACID | 2001 |
|
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| METHOD FOR PRODUCING NITRIC ACID WITH A TERTIARY REDUCTION IN NO AND NO EMISSIONS | 2018 |
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RU2766114C2 |
