IT1033073B - Nitrogen oxides removed from a gas - by absorption in sulphuric acid and conversion to nitrogen and water - Google Patents

Nitrogen oxides removed from a gas - by absorption in sulphuric acid and conversion to nitrogen and water

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Publication number
IT1033073B
IT1033073B IT2086074A IT2086074A IT1033073B IT 1033073 B IT1033073 B IT 1033073B IT 2086074 A IT2086074 A IT 2086074A IT 2086074 A IT2086074 A IT 2086074A IT 1033073 B IT1033073 B IT 1033073B
Authority
IT
Italy
Prior art keywords
nitrogen
gas
absorption
conversion
water
Prior art date
Application number
IT2086074A
Other languages
Italian (it)
Original Assignee
Lilly Co Eli
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lilly Co Eli filed Critical Lilly Co Eli
Priority to IT2086074A priority Critical patent/IT1033073B/en
Application granted granted Critical
Publication of IT1033073B publication Critical patent/IT1033073B/en

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  • Treating Waste Gases (AREA)

Abstract

The gas contains >=1 mole NO2 per mole NO, and through it is passed a >=80% soln. of H2SO4. After the H2SO4 is passed, NH3(NH4)2SO4, urea, or sulphamic acid is opt added to the acid to react with the absorbed N oxides followed by heating to 125-275 degrees C to convert the N oxides to N2 gas and H2O. The N oxides are readily absorbed by the H2SO4 and the products are innocuous.
IT2086074A 1974-04-08 1974-04-08 Nitrogen oxides removed from a gas - by absorption in sulphuric acid and conversion to nitrogen and water IT1033073B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT2086074A IT1033073B (en) 1974-04-08 1974-04-08 Nitrogen oxides removed from a gas - by absorption in sulphuric acid and conversion to nitrogen and water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2086074A IT1033073B (en) 1974-04-08 1974-04-08 Nitrogen oxides removed from a gas - by absorption in sulphuric acid and conversion to nitrogen and water

Publications (1)

Publication Number Publication Date
IT1033073B true IT1033073B (en) 1979-07-10

Family

ID=11173150

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2086074A IT1033073B (en) 1974-04-08 1974-04-08 Nitrogen oxides removed from a gas - by absorption in sulphuric acid and conversion to nitrogen and water

Country Status (1)

Country Link
IT (1) IT1033073B (en)

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