GB172979A - Improvements in the manufacture of nitric acid from the gases obtained through the oxidation of ammonia - Google Patents

Improvements in the manufacture of nitric acid from the gases obtained through the oxidation of ammonia

Info

Publication number
GB172979A
GB172979A GB33960/21A GB3396021A GB172979A GB 172979 A GB172979 A GB 172979A GB 33960/21 A GB33960/21 A GB 33960/21A GB 3396021 A GB3396021 A GB 3396021A GB 172979 A GB172979 A GB 172979A
Authority
GB
United Kingdom
Prior art keywords
gases
nitric acid
acid
dilute
water
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
GB33960/21A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB172979A publication Critical patent/GB172979A/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
    • C01B21/24—Nitric oxide (NO)
    • C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia

Landscapes

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

Abstract

In the preparation of nitric acid from the gases obtained by the oxidation of ammonia, a portion of the gases are absorbed in towers in water or dilute nitric acid and the remainder are liquified by refrigeration. After a preliminary cooling, during which no condensation occurs, the gases from the furnace are passed through coils or other acid-proof apparatus cooled by means of cold water to condense as much as possible of the water present and to give a dilute solution of nitric acid. The uncondensed gases then enter towers fed with water or the dilute acid obtained as above described by condensation. Before the unabsorbed gases are liquified they are dried by treatment in one or more washing towers with liquid nitrogen peroxide, in the manner described in Specification 164,734. The acid obtained by absorption of the nitrogen oxides in dilute nitric acid is treated finally with the liquid nitrogen oxides obtained by refrigeration of the unabsorbed gases.
GB33960/21A 1920-12-20 1921-12-16 Improvements in the manufacture of nitric acid from the gases obtained through the oxidation of ammonia Expired GB172979A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT172979X 1920-12-20

Publications (1)

Publication Number Publication Date
GB172979A true GB172979A (en) 1922-03-23

Family

ID=11150042

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33960/21A Expired GB172979A (en) 1920-12-20 1921-12-16 Improvements in the manufacture of nitric acid from the gases obtained through the oxidation of ammonia

Country Status (3)

Country Link
DE (1) DE364521C (en)
FR (1) FR540451A (en)
GB (1) GB172979A (en)

Also Published As

Publication number Publication date
DE364521C (en) 1922-11-27
FR540451A (en) 1922-07-11

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