GB156799A - Improvements in or relating to the manufacture of concentrated nitrous gases - Google Patents

Improvements in or relating to the manufacture of concentrated nitrous gases

Info

Publication number
GB156799A
GB156799A GB884/21A GB88421A GB156799A GB 156799 A GB156799 A GB 156799A GB 884/21 A GB884/21 A GB 884/21A GB 88421 A GB88421 A GB 88421A GB 156799 A GB156799 A GB 156799A
Authority
GB
United Kingdom
Prior art keywords
sulphuric acid
nitrous gases
per cent
employed
relating
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB884/21A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Norsk Hydro Elektrisk Kvaelstof AS
Original Assignee
Norsk Hydro Elektrisk Kvaelstof AS
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 Norsk Hydro Elektrisk Kvaelstof AS filed Critical Norsk Hydro Elektrisk Kvaelstof AS
Publication of GB156799A publication Critical patent/GB156799A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/36—Nitrogen dioxide (NO2, N2O4)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/24—Nitric oxide (NO)
    • C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

Dilute nitrous gases of a low degree of oxidation are absorbed by means of sulphuric acid of about 90-91 per cent strength, directly without preliminary oxidation. The resulting nitrosyl-sulphuric acid can be almost completely denitrated by allowing it to flow down a heated dephlegmation apparatus, no de-nitrating substance being employed. The residual sulphuric acid is sufficiently strong to be used repeatedly for further absorption of nitrous gases. The concentrated nitrous gases which are evolved may be converted into 67 per cent nitric acid by treatment with air and water, or may be used for the production of liquid nitrogen peroxide. The Specification as open to inspection under Sect. 91 (3) (a) is not limited to the use of sulphuric acid of about 90-91 per cent concentration for the absorption of the dilute nitrous gases; it is stated that "strong sulphuric acid" is employed. This subject-matter does not appear in the Specification as accepted.
GB884/21A 1915-10-06 1921-01-07 Improvements in or relating to the manufacture of concentrated nitrous gases Expired GB156799A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO156799X 1915-10-06

Publications (1)

Publication Number Publication Date
GB156799A true GB156799A (en) 1922-05-08

Family

ID=19904537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB884/21A Expired GB156799A (en) 1915-10-06 1921-01-07 Improvements in or relating to the manufacture of concentrated nitrous gases

Country Status (3)

Country Link
DE (1) DE318091C (en)
FR (1) FR492379A (en)
GB (1) GB156799A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543446A (en) * 1948-10-12 1951-02-27 Commercial Solvents Corp Process for the recovery of nitrogen oxide
US2566197A (en) * 1948-10-12 1951-08-28 Purdue Research Foundation Production of nitric acid from nitric oxide

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2006971A6 (en) * 1988-06-07 1989-05-16 Union Explosivos Rio Tinto Recovering nitrogen oxides from industrial plant emissions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543446A (en) * 1948-10-12 1951-02-27 Commercial Solvents Corp Process for the recovery of nitrogen oxide
US2566197A (en) * 1948-10-12 1951-08-28 Purdue Research Foundation Production of nitric acid from nitric oxide

Also Published As

Publication number Publication date
FR492379A (en) 1919-07-05
DE318091C (en)

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