GB1587456A - Process for the removal of nitrogen oxides from industrial gases by use of oxidising solutions in which nitrates are the oxidants - Google Patents
Process for the removal of nitrogen oxides from industrial gases by use of oxidising solutions in which nitrates are the oxidants Download PDFInfo
- Publication number
- GB1587456A GB1587456A GB40338/77A GB4033877A GB1587456A GB 1587456 A GB1587456 A GB 1587456A GB 40338/77 A GB40338/77 A GB 40338/77A GB 4033877 A GB4033877 A GB 4033877A GB 1587456 A GB1587456 A GB 1587456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- liquid
- nitric acid
- nitric oxide
- nitrogen oxides
- 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
Links
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims description 349
- 239000007789 gas Substances 0.000 title claims description 91
- 238000000034 method Methods 0.000 title claims description 76
- 150000002823 nitrates Chemical class 0.000 title description 10
- 239000007800 oxidant agent Substances 0.000 title description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 67
- 229910017604 nitric acid Inorganic materials 0.000 claims description 67
- 239000007788 liquid Substances 0.000 claims description 63
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 claims description 62
- 238000006243 chemical reaction Methods 0.000 claims description 48
- 238000005201 scrubbing Methods 0.000 claims description 45
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 32
- 230000000694 effects Effects 0.000 claims description 30
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 claims description 30
- 238000010521 absorption reaction Methods 0.000 claims description 24
- -1 nitrite ions Chemical class 0.000 claims description 22
- 229910002651 NO3 Inorganic materials 0.000 claims description 21
- 238000003795 desorption Methods 0.000 claims description 21
- 238000007254 oxidation reaction Methods 0.000 claims description 16
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 claims description 14
- 230000003647 oxidation Effects 0.000 claims description 14
- 230000036961 partial effect Effects 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 9
- 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 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 150000002826 nitrites Chemical class 0.000 claims description 8
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 8
- 230000000717 retained effect Effects 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 150000001455 metallic ions Chemical class 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 230000002829 reductive effect Effects 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 238000010924 continuous production Methods 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims 1
- 150000001768 cations Chemical class 0.000 claims 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims 1
- 229940005654 nitrite ion Drugs 0.000 claims 1
- 239000000243 solution Substances 0.000 description 64
- 229910001868 water Inorganic materials 0.000 description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000013461 design Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910002089 NOx Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052768 actinide Inorganic materials 0.000 description 1
- 150000001255 actinides Chemical class 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- UEQHNDWICSKZMZ-UHFFFAOYSA-N calcium;nitrate Chemical class [Ca+2].[O-][N+]([O-])=O UEQHNDWICSKZMZ-UHFFFAOYSA-N 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- GQPKMYBWFXDMIY-UHFFFAOYSA-N copper;nitrate Chemical class [Cu].[O-][N+]([O-])=O GQPKMYBWFXDMIY-UHFFFAOYSA-N 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910001960 metal nitrate Inorganic materials 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 235000020030 perry Nutrition 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical class [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009183 running Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
- C01B21/50—Nitrous acid; Salts thereof
-
- 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)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB40338/77A GB1587456A (en) | 1977-09-28 | 1977-09-28 | Process for the removal of nitrogen oxides from industrial gases by use of oxidising solutions in which nitrates are the oxidants |
| ZA00775882A ZA775882B (en) | 1977-09-28 | 1977-10-03 | A process for the removal of nitrogen oxides from industrial gases by use of oxidising solutions in which nitrates are the oxidants |
| FR7730349A FR2407736A1 (fr) | 1977-09-28 | 1977-10-10 | Procede pour debarasser des gaz industriels d'oxydes d'azote a l'aide de solutions oxydantes dans lesquelles des nitrates jouent le role d'oxydants |
| DE19772745513 DE2745513A1 (de) | 1977-09-28 | 1977-10-10 | Verfahren zur entfernung von stickoxiden aus industriegasen |
| BE181580A BE859532A (fr) | 1977-09-28 | 1977-10-10 | Elimination d'oxydes d'azote de gaz industriels |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB40338/77A GB1587456A (en) | 1977-09-28 | 1977-09-28 | Process for the removal of nitrogen oxides from industrial gases by use of oxidising solutions in which nitrates are the oxidants |
| ZA00775882A ZA775882B (en) | 1977-09-28 | 1977-10-03 | A process for the removal of nitrogen oxides from industrial gases by use of oxidising solutions in which nitrates are the oxidants |
| FR7730349A FR2407736A1 (fr) | 1977-09-28 | 1977-10-10 | Procede pour debarasser des gaz industriels d'oxydes d'azote a l'aide de solutions oxydantes dans lesquelles des nitrates jouent le role d'oxydants |
| DE19772745513 DE2745513A1 (de) | 1977-09-28 | 1977-10-10 | Verfahren zur entfernung von stickoxiden aus industriegasen |
| BE181580A BE859532A (fr) | 1977-09-28 | 1977-10-10 | Elimination d'oxydes d'azote de gaz industriels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1587456A true GB1587456A (en) | 1981-04-01 |
Family
ID=27507575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40338/77A Expired GB1587456A (en) | 1977-09-28 | 1977-09-28 | Process for the removal of nitrogen oxides from industrial gases by use of oxidising solutions in which nitrates are the oxidants |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE859532A (enrdf_load_stackoverflow) |
| DE (1) | DE2745513A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2407736A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1587456A (enrdf_load_stackoverflow) |
| ZA (1) | ZA775882B (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135223A1 (zh) * | 2020-12-26 | 2022-06-30 | 黄立维 | 一种气流中一氧化氮的去除装置和工艺 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2939674A1 (de) * | 1979-09-29 | 1981-04-09 | Hoechst Ag, 6000 Frankfurt | Verfahren zur absorption nitroser gase |
| FR2486818B1 (fr) * | 1980-07-18 | 1985-05-31 | Rhone Poulenc Chim Base | Procede de traitement d'un gaz contenant des oxydes d'azote |
| DE4027404A1 (de) * | 1990-02-26 | 1991-08-29 | Fritz Curtius | Verfahren zur oxidation von nitrosen gasen (no) in einem gasstrom, durch eine waesche des gasstrom mit salpetersaeure |
| CN109319776B (zh) * | 2018-11-30 | 2023-09-15 | 黄冈师范学院 | 氧化氮和铁离子催化氧化回收金刚石的方法、装置及应用 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE753116C (de) * | 1942-04-29 | 1953-05-26 | Ig Farbenindustrie Ag | UEberfuehrung von Stickstoffmonoxyd in Stickstoffdioxyd |
| GB1051100A (enrdf_load_stackoverflow) * | 1963-08-15 | 1900-01-01 | ||
| DE1667595C3 (de) * | 1967-12-29 | 1974-01-10 | Lentia Gmbh, Chem. U. Pharm. Erzeugnisse - Industriebedarf, 8000 Muenchen | Verfahren zur kontinuierlichen Herstellung von Distickstofftetroxyd |
| US3927183A (en) * | 1968-04-26 | 1975-12-16 | Showa Denko Kk | Method for oxidizing nitrogen oxides |
| DE2117226A1 (de) * | 1971-04-08 | 1972-10-19 | Uhde Gmbh Friedrich | Verfahren zur Entfernung von Stickstoffoxyden aus Abgasen |
-
1977
- 1977-09-28 GB GB40338/77A patent/GB1587456A/en not_active Expired
- 1977-10-03 ZA ZA00775882A patent/ZA775882B/xx unknown
- 1977-10-10 FR FR7730349A patent/FR2407736A1/fr active Granted
- 1977-10-10 DE DE19772745513 patent/DE2745513A1/de active Granted
- 1977-10-10 BE BE181580A patent/BE859532A/xx not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135223A1 (zh) * | 2020-12-26 | 2022-06-30 | 黄立维 | 一种气流中一氧化氮的去除装置和工艺 |
| CN114682067A (zh) * | 2020-12-26 | 2022-07-01 | 黄华丽 | 一种气流中一氧化氮的去除装置和工艺 |
Also Published As
| Publication number | Publication date |
|---|---|
| BE859532A (fr) | 1978-02-01 |
| ZA775882B (en) | 1979-05-30 |
| DE2745513C2 (enrdf_load_stackoverflow) | 1989-10-19 |
| FR2407736A1 (fr) | 1979-06-01 |
| FR2407736B1 (enrdf_load_stackoverflow) | 1982-03-19 |
| DE2745513A1 (de) | 1979-04-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |