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1. WO2022111912 - AMMONIA BURNER FOR NITRIC ACID PRODUCTION

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Publication Number WO/2022/111912
Publication Date 02.06.2022
International Application No. PCT/EP2021/079047
International Filing Date 20.10.2021
IPC
C01B 21/26 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
21Nitrogen; Compounds thereof
20Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
24Nitric oxide (NO)
26Preparation by catalytic oxidation of ammonia
C01B 21/28 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
21Nitrogen; Compounds thereof
20Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
24Nitric oxide (NO)
26Preparation by catalytic oxidation of ammonia
28Apparatus
C01B 21/38 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
21Nitrogen; Compounds thereof
20Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
38Nitric acid
F28C 3/02 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
CHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
3Other direct-contact heat-exchange apparatus
02the heat-exchange media both being gases or vapours
F28D 1/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEAT STORAGE PLANTS OR APPARATUS IN GENERAL
1Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
F28D 7/12 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEAT STORAGE PLANTS OR APPARATUS IN GENERAL
7Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
10the conduits being arranged one within the other, e.g. concentrically
12the surrounding tube being closed at one end, i.e. return type
CPC
C01B 21/26
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
21Nitrogen; Compounds thereof
20Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
24Nitric oxide (NO)
26Preparation by catalytic ; or non-catalytic; oxidation of ammonia
C01B 21/28
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
21Nitrogen; Compounds thereof
20Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
24Nitric oxide (NO)
26Preparation by catalytic ; or non-catalytic; oxidation of ammonia
28Apparatus
C01B 21/38
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
21Nitrogen; Compounds thereof
20Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
38Nitric acid
F28D 2021/0022
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
21Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
0022for chemical reactors
F28D 7/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
7Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
06the conduits having a single U-bend
F28D 7/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
7Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
10the conduits being arranged one within the other, e.g. concentrically
12the surrounding tube being closed at one end, e.g. return type
Applicants
  • CASALE SA [CH]/[CH]
Inventors
  • RIZZI, Enrico
Agents
  • M. ZARDI & CO S.A.
Priority Data
20210280.227.11.2020EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) AMMONIA BURNER FOR NITRIC ACID PRODUCTION
(FR) BRÛLEUR À AMMONIAC POUR PRODUCTION D'ACIDE NITRIQUE
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Abstract
(EN) An ammonia burner (1) comprising an ammonia section (2) for ammonia oxidation and a combined heat exchange section (3) for heating a process stream (9), wherein said ammonia section and heat exchange section are coaxially arranged in a pressure vessel (P) of the burner and the hot nitrogen oxides-containing effluent gas (402) from the ammonia section (2) is directed to a shell side (301) of the heat exchange section (3) so that said effluent gas (402) transfers heat to the process stream (9).
(FR) L'invention concerne un brûleur à ammoniac (1) comprenant une section d'ammoniac (2) pour l'oxydation de l'ammoniac et une section d'échange de chaleur combinée (3) pour le chauffage d'un courant de traitement (9), ladite section d'ammoniac et ladite section d'échange de chaleur étant disposées de manière coaxiale dans un récipient sous pression (P) du brûleur et le gaz effluent chaud contenant des oxydes d'azote (402) de la section d'ammoniac (2) est dirigé vers un côté d'enveloppe (301) de la section d'échange de chaleur (3) de telle sorte que ledit gaz effluent (402) transfère de la chaleur au courant de traitement (9).
Related patent documents
EP4005974
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