DK2678270T3 - Fremgangsmåde til fjernelse af N2O og NOx fra salpetersyreproduktionsprocessen samt anlæg dertil - Google Patents
Fremgangsmåde til fjernelse af N2O og NOx fra salpetersyreproduktionsprocessen samt anlæg dertil Download PDFInfo
- Publication number
- DK2678270T3 DK2678270T3 DK12706771.8T DK12706771T DK2678270T3 DK 2678270 T3 DK2678270 T3 DK 2678270T3 DK 12706771 T DK12706771 T DK 12706771T DK 2678270 T3 DK2678270 T3 DK 2678270T3
- Authority
- DK
- Denmark
- Prior art keywords
- catalyst
- catalyst bed
- nox
- residual gas
- iron
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 90
- 230000008569 process Effects 0.000 title claims description 80
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title claims description 27
- 229910017604 nitric acid Inorganic materials 0.000 title claims description 27
- 238000004519 manufacturing process Methods 0.000 title description 21
- 239000003054 catalyst Substances 0.000 claims description 202
- 239000007789 gas Substances 0.000 claims description 85
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 80
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 43
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- 229910052723 transition metal Inorganic materials 0.000 claims description 4
- 229910000314 transition metal oxide Inorganic materials 0.000 claims description 4
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- 229910052785 arsenic Inorganic materials 0.000 claims description 2
- 229910052790 beryllium Inorganic materials 0.000 claims description 2
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- 229910052732 germanium Inorganic materials 0.000 claims description 2
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- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000010970 precious metal Substances 0.000 claims 2
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical compound [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 claims 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 128
- 229910002089 NOx Inorganic materials 0.000 description 75
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 74
- 238000006722 reduction reaction Methods 0.000 description 33
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 29
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 17
- 238000002474 experimental method Methods 0.000 description 13
- 229910021529 ammonia Inorganic materials 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 6
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- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 4
- 239000001272 nitrous oxide Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
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- 230000003247 decreasing effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 2
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- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 2
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- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
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- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- -1 aluminum silicates Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
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- 239000001257 hydrogen Substances 0.000 description 1
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- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C01B21/40—Preparation by absorption of oxides of nitrogen
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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- B01D53/8628—Processes characterised by a specific catalyst
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- C01B21/24—Nitric oxide (NO)
- C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
- C01B21/265—Preparation by catalytic or non-catalytic oxidation of ammonia characterised by the catalyst
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- C—CHEMISTRY; METALLURGY
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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- C01B21/38—Nitric acid
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2257/402—Dinitrogen oxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J2229/30—After treatment, characterised by the means used
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- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
- B01J29/42—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing iron group metals, noble metals or copper
- B01J29/46—Iron group metals or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/65—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the ferrierite type, e.g. types ZSM-21, ZSM-35 or ZSM-38, as exemplified by patent documents US4046859, US4016245 and US4046859, respectively
- B01J29/66—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the ferrierite type, e.g. types ZSM-21, ZSM-35 or ZSM-38, as exemplified by patent documents US4046859, US4016245 and US4046859, respectively containing iron group metals, noble metals or copper
- B01J29/68—Iron group metals or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Claims (22)
1. Fremgangsmåde til fremstilling af salpetersyre ved katalytisk oxidering af ΝΗΙ3 ved hjælp af ilt og efterfølgende reaktion af det dannede NOx med et absorptionsmedium i en absorptionstårn, som omfatter en katalysatorleje til N20 nedbrydning arrangeret i procesgassen nedstrøms for den katalytiske NFI3 oxidering og opstrøms for absorptionstårnet, samt et katalysatorleje til NOx reduktion og til at forårsage en yderligere nedgang i mængden af N20 arrangeret i restgassen nedstrøms for absorptionstårnet, - hvori mængden af N20 fjernet i katalysatorlejet til N20 fjernelse arrangeret i procesgassen ikke er mere end hvad der fører til et N20 indhold > 100 ppmv og et molforhold N20/N0X > 0,25 før restgassens indgang i katalysatorlejet til NOx reduktion, og - katalysatorlejet til NOx reduktion og forårsagelse af en yderligere nedgang i mængden af N20 arrangeret i restgassen indeholder mindst en jernladet zeolitkatalysator, og - NFI3 tilføres restgassen før indgang i katalysatorlejet i en sådan mængde, at der fremkommer en NOx koncentration < 40 ppmv ved udløbet fra katalysatorlejet, og - driftsparametrene tryk, temperatur og rumhastighed er valgt på sådan måde, at det resulterer i en N20 koncentration < 200 ppmv.
2. Fremgangsmåde ifølge krav 1, hvori den tilsigtede indstilling af N20 fjernelse i katalysatorlejet arrangeret i procesgassen opnås ved variering af lagtykkelsen eller laghøjden af katalysatorlejet og/eller udvælgelse af katalysatormaterialet og/eller udvælgelse af katalysatormaterialets geometri.
3. Fremgangsmåde ifølge krav 1 eller 2, hvori katalysatorlejet arrangeret i procesgassen indeholder en katalysator, som er egnet til nedbrydning af N20, fortrinsvis en katalysator indeholdende overgangsmetaloxider og/eller overgangsmetalholdige blandingsoxider, fortrinsvis blandede oxider med en perowskitstruktur, en perowskitlignende struktur eller en spinellstruktur, og/eller ædelmetaller som aktiv komponent.
4. Fremgangsmåde ifølge ethvert af de foregående krav, hvori katalysatormaterialet i katalysatorlejet arrangeret i procesgassen indeholder koboltholdige oxider eller blandede oxider som aktive komponenter og er især et katalysatormateriale, som omfatter en porøs bærer bestående af polykrystallinsk eller glasagtigt, uor ganisk materiale, et derpå påført ceriumoxidfunktionslag og et derpå påført lag oxideret koboltholdigt materiale.
5. Fremgangsmåde ifølge ethvert af de foregående krav, hvori katalysatormaterialet i katalysatorlejet arrangeret i procesgassen er konfigureret som et formet legeme, der har geometri som en cylinder, hulcylinder, multihulcylinder, perforerede og uperforerede trefligede eller flerfligede eller bikage strukturer, hvor katalysatormaterialet i katalysatorlejet arrangeret i procesgassen fortrinsvis er konfigureret som et formet legeme, hvis ækvivalente diameter har en nedre grænse > 1,5 mm, fortrinsvis > 3 mm og især > 5 mm, og har en øvre grænse < 20 mm, fortrinsvis < 15 mm og især < 10 mm.
6. Fremgangsmåde ifølge ethvert af de foregående krav, hvori trykfaldet over katalysatormaterialet i katalysatorlejet arrangeret i procesgassen er < 30 mbar, fortrinsvis < 25 mbar, især foretrukket < 20 mbar, meget især foretrukket < 15 mbar, og især < 10 mbar, hvor lejets højde af katalysatormaterialet i katalysatorlejet er 3-30 cm, fortrinsvis 5-20 cm og især foretrukket 10-20 cm
7. Fremgangsmåde ifølge ethvert af de foregående krav, hvori N20 fjernelsen i katalysatorlejet i procesgassen er 40-90%, fortrinsvis 45-80%, især foretrukket 50-70%, på basis af den oprindelige mængde N20 til stede.
8. Fremgangsmåde ifølge ethvert af de foregående krav, hvori rumhastigheden, ved hvilken restgassen føres over katalysatormaterialet i katalysatorlejet arrangeret i restgassen er fra 200 til 200.000 h'1, fortrinsvis 5.000 til 10.000 h'1 og især fortrinsvis fra 5.000 til 50.000 h'1, hvor trykket i restgassen før indgang i katalysatormaterialet i katalysatorlejet arrangeret i restgassen er fra 1 til 50 bar, fortrinsvis mindst 2 bar, især mindst 3 bar, især foretrukket fra 4 til 25 bar, og temperaturen i restgassen før indgang i katalysatormaterialet i katalysatorlejet arrangeret i restgassen er fra 300SC til 600SC og fortrinsvis fra 330SC til 520SC.
9. Fremgangsmåde ifølge ethvert af de foregående krav, hvori driftsparametrene tryk, temperatur og rumhastighed i/over katalysatorlejet arrangeret i restgassen indstilles og/eller kulbrinter tilføres som reduktionsmiddel for N20 i dette katalysatorleje på sådan måde, at nedgangen i indholdet af N20 i dette katalysatorleje er mindst 50%, fortrinsvis mindst 70%, især fortrinsvis mindst 80%, og meget især fortrinsvis 90 til 100%, baseret på indholdet af N20 ved indgangen til dette katalysatorleje.
10. Fremgangsmåde ifølge ethvert af de foregående krav, hvori en mængde fra 0,9 til 1,3 mol NH3 pr. mol NOx der skal reduceres, og især fra 1,0 til 1,2 mol NH3 pr. mol NOx der skal reduceres, tilføres restgassen før indgang i katalysatormaterialet i katalysatorlejet arrangeret i restgassen.
11. Fremgangsmåde ifølge ethvert af de foregående krav, hvori kulbrinter iblandes restgassen før indgang i katalysatormaterialet i katalysatorlejet arrangeret i restgassen, hvor en mængde på 0,2-1 mol kulbrinte/1 mol N20, der skal reduceres, fortrinsvis 0,2-0,7 mol kulbrinte/1 mol N20, der skal reduceres, og især 0,2-0,7 mol kulbrinte/1 mol N20, der skal reduceres, tilføres, og på basis af NOx indgangskoncentrationen tilføres 1-2 mol NH3/mol NOx, fortrinsvis 1,2-1,8 mol NH3/mol NOx og især 1,2-1,7 mol NH3/mol NOx.
12. Fremgangsmåde ifølge ethvert af de foregående krav, hvori katalysatorlejet til NOx reduktionen og forårsagelse af en yderligere nedgang i mængden af N20 arrangeret i restgassen er opdelt i en flerhed af reaktionszoner eller fysisk adskilte reaktionstrin, og der udføres fortrinsvis en trinvis indføring af NH3 i de enkelte reaktionszoner eller i de fysisk adskilte reaktionstrin i katalysatorlejet arrangeret i restgassen.
13. Fremgangsmåde ifølge ethvert af de foregående krav, hvori den jernladede zeolitkatalysator i katalysatorlejet arrangeret i restgassen indeholder op til 25% jern, fortrinsvis fra 0,1 til 10% jern, på basis af zeolittens masse.
14. Fremgangsmåde ifølge ethvert af de foregående krav, hvori den jernladede zeolitkatalysator i katalysatorlejet arrangeret i restgassen indeholder > 50 vægt-% og fortrinsvis > 70 vægt-% jernladet zeolit eller en flerhed af jernladede zeolitter.
15. Fremgangsmåde ifølge ethvert af de foregående krav, hvori den jernladede zeolitkatalysator i katalysatorlejet arrangeret i restgassen er en zeolit af MFI, BEA, FER, MOR, FAU og/eller MEL typen og er især fortrinsvis en jernladet zeolit af MFI og/eller BEA og/eller FER typen.
16. Fremgangsmåde ifølge ethvert af de foregående krav, hvori den jernladede zeolitkatalysator i katalysatorlejet arrangeret i restgassen omfatter en zeolit, hvis gitteraluminium er blevet fuldstændigt eller delvist isomorft erstattet af en eller flere elementer, hvor elementerne er valgt fra gruppen bestående af B, Be, Ga, Fe, Cr, V, As, Sb og Bi, eller omfatter en zeolit hvis gittersilicium er blevet fuldstændigt eller delvist isomorft erstattet af en eller flere elementer valgt fra gruppen bestående af Ge, Ti, Zr og Hf, og/eller den jernladede zeolitkatalysator i katalysatorlejet arrangeret i restgassen omfatter en zeolit, som er blevet hydrotermisk forbehandlet med damp, hvor zeolitten, som er blevet termisk forbehandlet med damp fortrinsvis har et forhold af ekstragitteraluminium til gitteraluminium på mindst 1:2, fortrinsvis fra 1:2 til 20:1.
17. Fremgangsmåde ifølge ethvert af de foregående krav, hvori gassen strømmer aksielt, siderettet eller radielt gennem katalysatorlejet arrangeret i restgassen.
18. Fremgangsmåde ifølge ethvert af de foregående krav, hvori en eller flere yderligere trin til N20 og/eller NOx fjernelse er arrangeret mellem katalysatorlejet til N20 nedbrydning arrangeret i procesgassen og katalysatorlejet til NOx reduktion og forårsager en yderligere nedgang i mængden af N20 arrangeret i restgassen.
19. Salpetersyreanlæg hvori en katalytisk fjernelse af den ved den katalytiske NH3 oxidation dannede N20 udføres i procesgassen, og en yderligere reduktion af N20 indholdet og en reduktion af NOx indholdet udføres i restgassen nedstrøms for absorptionstårnet, som omfatter mindst følgende elementer: A) reaktor for katalytisk oxidation af NH3 ved hjælp af ilt for at frembringe en NOx-holdig procesgas, B) absorptionstårn for reagering af den af procesgassen dannede NOx med et absorptionsmedium, fortrinsvis vand, så der efterlades en restgas indeholdende NOx og N20, C) mindst et første katalysatorleje til N20 nedbrydning, gennem hvilket procesgassen strømmer, og som er arrangeret nedstrøms for den katalytiske NH3 oxidering og opstrøms for absorptionstårnet i strømningsretningen, D) mindst et andet katalysatorleje til NOx reduktion, som forårsager en yderligere nedgang i N20 indholdet, og gennem hvilket restgassen strømmer, og som er arrangeret nedstrøms for absorptionstårnet i strømningsretningen, og E) mindst en indretning for tilførsel af gasformigt reduktionsmiddel i restgassen, og som er arrangeret nedstrøms for absorptionstårnet og opstrøms for det andet katalysatorleje i strømningsretningen, hvor F) det første katalysatorleje indeholder en katalysator egnet til nedbrydning af N20, fortrinsvis en katalysator, som indeholder overgangsmetaloxider og/eller overgangsmetalholdige blandingsoxider, fortrinsvis blandede oxider med en pero-wskitstruktur, en perowskitlignende struktur eller en spinellstruktur, og/eller ædelmetaller som aktiv komponent, og G) det andet katalysatorleje indeholder en katalysator indeholdende mindst en jernladet zeolit.
20. Salpetersyreanlæg ifølge krav 19, hvori det første katalysatorlejes katalysatormateriale indeholder koboltholdige oxider eller blandede oxider som aktive komponenter, og især er et katalysatormateriale, som omfatter en porøs bærer af polykrystallinsk eller glasagtigt, uorganisk materiale, et derpå påførøt cerium-oxidfunktionslag og et derpå påført lag oxideret koboltholdigt materiale.
21. Salpetersyreanlæg ifølge krav 19 eller 20, hvori lejets højde af katalysatormaterialet i katalysatorlejet er 3-30 cm, fortrinsvis 5-20 cm og især foretrukket 10-20 cm.
22. Salpetersyreanlæg ifølge ethvert af krav 19 til 21, hvori den jernladede zeolitkatalysator i katalysatorlejet arrangeret i restgassen er en zeolit af MFI, BEA, FER, MOR, FAU og/eller MEL typen og er især fortrinsvis en jernladet zeolit af MFI og/eller BEA og/eller FER typen.
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PCT/EP2012/000642 WO2012113516A1 (de) | 2011-02-21 | 2012-02-14 | Verfahren zur beseitigung von n2o und nox aus dem prozess zur salpetersäureherstellung und dafür geeignete anlage |
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DE102012000570A1 (de) | 2012-01-16 | 2013-07-18 | Thyssenkrupp Uhde Gmbh | Verfahren und Vorrichtung zur Herstellung von Salpetersäure |
CN109012173A (zh) * | 2015-08-17 | 2018-12-18 | 兰州大学 | 一种处理氮氧化物的方法 |
EP3162427A1 (en) * | 2015-10-28 | 2017-05-03 | Casale SA | A method and apparatus for removing nox and n2o from a gas |
DE102016220184A1 (de) * | 2016-10-17 | 2018-04-19 | Thyssenkrupp Ag | Verfahren und Anlage zur Herstellung von Salpetersäure |
US20200061536A1 (en) * | 2016-10-28 | 2020-02-27 | Casale Sa | A method for removing nitrogen oxides from a gas using an iron exchanged zeolite catalyst |
BR112020005604A2 (pt) * | 2017-11-30 | 2020-09-29 | Casale Sa | processo para a produção de ácido nítrico com redução terciária de n2o e nox |
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CN109453770A (zh) * | 2018-10-30 | 2019-03-12 | 中海油太原贵金属有限公司 | 一种氧化物负载铂的氨氧化制氮氧化物的催化剂 |
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EP3741449A1 (en) * | 2019-05-21 | 2020-11-25 | Haldor Topsøe A/S | A process for the removal of dinitrogen oxide in process off-gas |
CN117715692A (zh) * | 2021-07-28 | 2024-03-15 | 巴斯夫欧洲公司 | DeN2O催化剂的新几何结构 |
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DE1984895U (de) | 1967-12-05 | 1968-05-02 | Hans-Friedrich Weissbach | Klarsicht-verpackung. |
FR2705036B1 (fr) | 1993-05-10 | 1995-06-16 | Paroisse Sa Grande | Procédé pour abaisser la teneur en protoxyde d'azote dans les effluents gazeux, en particulier dans ceux qui sont issus de synthèses par oxydation nitrique. |
FR2770418B1 (fr) | 1997-11-04 | 1999-12-03 | Grande Paroisse Sa | Procede pour l'elimination dans le gaz des oxydes d'azote nox par reduction catalytique selective (scr) a l'ammoniac sur catalyseurs zeolitiques ne provoquant pas la formation de protoxyde d'azote |
DE19820515A1 (de) | 1998-05-08 | 1999-11-11 | Alsi Penta Zeolithe Gmbh | Verfahren zur Herstellung eines Katalysators für die Reinigung von Abgasen, die Stickstoffoxide in Gegenwart von Sauerstoff und Wasser enthalten |
FR2789911B1 (fr) | 1999-02-18 | 2001-05-04 | Grande Paroisse Sa | Procede pour abattre simultanement les oxydes nitriques et le protoxyde d'azote dans les gaz qui en contiennent |
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DE102007038711A1 (de) | 2007-08-14 | 2009-02-19 | Uhde Gmbh | Katalysator, Verfahren zu dessen Herstellung und dessen Verwendung |
EP2184105A1 (en) | 2008-11-05 | 2010-05-12 | Süd Chemie - Catalysts Italia S.R.L. | Mixed oxides catalysts |
DE102008059930A1 (de) | 2008-12-02 | 2010-06-10 | Uhde Gmbh | Vorrichtung und Verfahren für katalytische Gasphasenreaktionen sowie deren Verwendung |
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BR112013021710A2 (pt) | 2016-11-01 |
PT2678270E (pt) | 2015-02-24 |
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CL2013002413A1 (es) | 2014-03-28 |
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US20130336872A1 (en) | 2013-12-19 |
EP2678270B1 (de) | 2014-11-26 |
BR112013021710B1 (pt) | 2020-11-03 |
CA2825669A1 (en) | 2012-08-30 |
WO2012113516A1 (de) | 2012-08-30 |
US20170334722A1 (en) | 2017-11-23 |
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