DE3018665A1 - Verfahren und vorrichtung zum regenerieren von schwefelsaeure - Google Patents
Verfahren und vorrichtung zum regenerieren von schwefelsaeureInfo
- Publication number
- DE3018665A1 DE3018665A1 DE19803018665 DE3018665A DE3018665A1 DE 3018665 A1 DE3018665 A1 DE 3018665A1 DE 19803018665 DE19803018665 DE 19803018665 DE 3018665 A DE3018665 A DE 3018665A DE 3018665 A1 DE3018665 A1 DE 3018665A1
- Authority
- DE
- Germany
- Prior art keywords
- stage
- acid
- concentration
- approx
- torr
- 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.)
- Withdrawn
Links
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims description 58
- 238000000034 method Methods 0.000 title claims description 19
- 230000001172 regenerating effect Effects 0.000 title 1
- 239000002253 acid Substances 0.000 claims description 84
- 238000010438 heat treatment Methods 0.000 claims description 35
- 210000003298 dental enamel Anatomy 0.000 claims description 30
- 238000001704 evaporation Methods 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 230000008020 evaporation Effects 0.000 claims description 28
- 238000004094 preconcentration Methods 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 12
- 239000010453 quartz Substances 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 9
- 230000002829 reductive effect Effects 0.000 claims description 9
- 238000000746 purification Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000007800 oxidant agent Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000008929 regeneration Effects 0.000 claims description 4
- 238000011069 regeneration method Methods 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 4
- 150000007513 acids Chemical class 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 7
- 238000009835 boiling Methods 0.000 description 7
- 229910017604 nitric acid Inorganic materials 0.000 description 7
- 230000005855 radiation Effects 0.000 description 7
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 229910000358 iron sulfate Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 239000011552 falling film Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 1
- RXQNKKRGJJRMKD-UHFFFAOYSA-N 5-bromo-2-methylaniline Chemical compound CC1=CC=C(Br)C=C1N RXQNKKRGJJRMKD-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical class [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000002320 enamel (paints) Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- VQTGUFBGYOIUFS-UHFFFAOYSA-N nitrosylsulfuric acid Chemical compound OS(=O)(=O)ON=O VQTGUFBGYOIUFS-UHFFFAOYSA-N 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 239000000015 trinitrotoluene Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0094—Evaporating with forced circulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/02—Evaporators with heating coils
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/88—Concentration of sulfuric acid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8080103187T DE3065265D1 (en) | 1979-06-13 | 1980-06-09 | Process and apparatus for regenerating sulfuric acid |
| EP80103187A EP0022181B1 (de) | 1979-06-13 | 1980-06-09 | Verfahren und Vorrichtung zum Regenerieren von Schwefelsäure |
| CA000353787A CA1152285A (en) | 1979-06-13 | 1980-06-11 | Process and apparatus for regenerating sulphuric acid |
| FI801880A FI67355C (fi) | 1979-06-13 | 1980-06-11 | Foerfarande och anordning foer regenerering av svavelsyra |
| ES492361A ES8104136A1 (es) | 1979-06-13 | 1980-06-12 | Procedimiento y dispositivo para la regeneracion de acido sulfurico impurificado |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH551379A CH641126A5 (en) | 1979-06-13 | 1979-06-13 | Process and system for regenerating sulphuric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3018665A1 true DE3018665A1 (de) | 1980-12-18 |
Family
ID=4294884
Family Applications (7)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19803018662 Withdrawn DE3018662A1 (de) | 1979-06-13 | 1980-05-16 | Verdampfer zum konzentrieren von mineralsaeure, insbesondere schwefelsaeure |
| DE19803018664 Withdrawn DE3018664A1 (de) | 1979-06-13 | 1980-05-16 | Verfahren und vorrichtung zum regenerieren von schwefelsaeure |
| DE19803018665 Withdrawn DE3018665A1 (de) | 1979-06-13 | 1980-05-16 | Verfahren und vorrichtung zum regenerieren von schwefelsaeure |
| DE19803018663 Withdrawn DE3018663A1 (de) | 1979-06-13 | 1980-05-16 | Verfahren und vorrichtung zum regenerieren von schwefelsaeure |
| DE8080103185T Expired DE3065359D1 (en) | 1979-06-13 | 1980-06-09 | Process and apparatus for regenerating sulphuric acid |
| DE8080103187T Expired DE3065265D1 (en) | 1979-06-13 | 1980-06-09 | Process and apparatus for regenerating sulfuric acid |
| DE8080103186T Expired DE3064108D1 (en) | 1979-06-13 | 1980-06-09 | Evaporator for concentrating mineral acids, especially sulfuric acid |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19803018662 Withdrawn DE3018662A1 (de) | 1979-06-13 | 1980-05-16 | Verdampfer zum konzentrieren von mineralsaeure, insbesondere schwefelsaeure |
| DE19803018664 Withdrawn DE3018664A1 (de) | 1979-06-13 | 1980-05-16 | Verfahren und vorrichtung zum regenerieren von schwefelsaeure |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19803018663 Withdrawn DE3018663A1 (de) | 1979-06-13 | 1980-05-16 | Verfahren und vorrichtung zum regenerieren von schwefelsaeure |
| DE8080103185T Expired DE3065359D1 (en) | 1979-06-13 | 1980-06-09 | Process and apparatus for regenerating sulphuric acid |
| DE8080103187T Expired DE3065265D1 (en) | 1979-06-13 | 1980-06-09 | Process and apparatus for regenerating sulfuric acid |
| DE8080103186T Expired DE3064108D1 (en) | 1979-06-13 | 1980-06-09 | Evaporator for concentrating mineral acids, especially sulfuric acid |
Country Status (3)
| Country | Link |
|---|---|
| JP (3) | JPS5645703A (enrdf_load_html_response) |
| CH (1) | CH641126A5 (enrdf_load_html_response) |
| DE (7) | DE3018662A1 (enrdf_load_html_response) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558335A (zh) * | 2022-03-17 | 2022-05-31 | 盛隆资源再生（无锡）有限公司 | 一种硫酸浓缩系统装置及浓缩方法 |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5899150U (ja) * | 1981-12-26 | 1983-07-06 | 河西工業株式会社 | 自動車用電話器 |
| US4602730A (en) * | 1982-09-22 | 1986-07-29 | Shuichi Murakami | Device for soldering printed board |
| US4576813A (en) * | 1983-07-05 | 1986-03-18 | Monsanto Company | Heat recovery from concentrated sulfuric acid |
| US4670242A (en) * | 1984-11-09 | 1987-06-02 | Monsanto Company | Heat recovery from concentrated sulfuric acid |
| US4828660A (en) * | 1986-10-06 | 1989-05-09 | Athens Corporation | Method and apparatus for the continuous on-site chemical reprocessing of ultrapure liquids |
| DE3718675A1 (de) * | 1987-06-04 | 1988-12-15 | Bayer Ag | Verfahren zum eindampfen von schwefelsaeure |
| JPH03213187A (ja) * | 1990-01-17 | 1991-09-18 | Sakura Seisakusho:Kk | 帯色廃液の高度処理システム |
| DE4216499C2 (de) * | 1992-05-19 | 1996-03-21 | Deutsche Forsch Luft Raumfahrt | Verfahren zur Wiederaufbereitung von Abfallschwefelsäure |
| DE19614642C2 (de) * | 1996-02-22 | 2002-05-16 | Mcw Mueller Chemikalien Wertst | Verfahren zur Aufarbeitung von Abfall-Schwefelsäure |
| DE19732190C1 (de) * | 1997-07-26 | 1998-11-12 | Deutsch Zentr Luft & Raumfahrt | Verfahren zur Wiederaufbereitung von Abfallmineralsäuren |
| KR101910338B1 (ko) * | 2010-11-22 | 2018-10-22 | 데이진 아라미드 비.브이. | 황산 용액의 황산 농도를 증가시키는 방법 |
| WO2013113651A1 (de) * | 2012-01-31 | 2013-08-08 | Bayer Intellectual Property Gmbh | Verfahren und anlage zur herstellung von nitrobenzol |
| TWI481550B (zh) | 2013-05-01 | 2015-04-21 | Asia Union Electronic Chemical Corp | 高純度硫酸溶液之製備方法 |
| FR3081721B1 (fr) * | 2018-06-01 | 2022-04-15 | Arkema France | Procede de preparation d'un sel de lithium de bis(fluorosulfonyl)imide |
| CN108862210B (zh) * | 2018-06-25 | 2021-12-21 | 无锡英罗唯森科技有限公司 | 一种硫酸浓缩系统和工艺 |
| DE102020131827A1 (de) | 2020-12-01 | 2022-06-02 | Andreas Wilk | Vorrichtung und Verfahren zur Aufkonzentrierung korrosiver Flüssigkeiten |
| CN115364501B (zh) * | 2022-08-30 | 2025-06-27 | 湖北东方化工有限公司 | 一种用于混合硝基甲苯汽提工艺的水环泵系统 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2242055C3 (de) * | 1972-08-26 | 1979-05-31 | Industrie Chemie Thoma Gmbh, 6000 Frankfurt | Verfahren zur Konzentration und Reinigung von durch organische Substanzen verunreinigter Schwefelsäure |
| DE2311085A1 (de) * | 1973-03-06 | 1974-09-19 | Bayer Ag | Trennung von fluessigen aggressiven stoffgemischen |
| DE2360706C3 (de) * | 1973-12-06 | 1980-10-16 | Hoechst Ag, 6000 Frankfurt | Verfahren zur Regeneration von Schwefelsäure |
-
1979
- 1979-06-13 CH CH551379A patent/CH641126A5/de not_active IP Right Cessation
-
1980
- 1980-05-16 DE DE19803018662 patent/DE3018662A1/de not_active Withdrawn
- 1980-05-16 DE DE19803018664 patent/DE3018664A1/de not_active Withdrawn
- 1980-05-16 DE DE19803018665 patent/DE3018665A1/de not_active Withdrawn
- 1980-05-16 DE DE19803018663 patent/DE3018663A1/de not_active Withdrawn
- 1980-06-09 DE DE8080103185T patent/DE3065359D1/de not_active Expired
- 1980-06-09 DE DE8080103187T patent/DE3065265D1/de not_active Expired
- 1980-06-09 DE DE8080103186T patent/DE3064108D1/de not_active Expired
- 1980-06-13 JP JP7916080A patent/JPS5645703A/ja active Granted
- 1980-06-13 JP JP7915980A patent/JPS5645809A/ja active Pending
- 1980-06-13 JP JP7915880A patent/JPS5645808A/ja active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558335A (zh) * | 2022-03-17 | 2022-05-31 | 盛隆资源再生（无锡）有限公司 | 一种硫酸浓缩系统装置及浓缩方法 |
| CN114558335B (zh) * | 2022-03-17 | 2024-03-12 | 盛隆资源再生（无锡）有限公司 | 一种硫酸浓缩系统装置及浓缩方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5645809A (en) | 1981-04-25 |
| DE3018664A1 (de) | 1980-12-18 |
| DE3065359D1 (en) | 1983-11-24 |
| DE3064108D1 (en) | 1983-08-18 |
| JPS6357081B2 (enrdf_load_html_response) | 1988-11-10 |
| DE3018663A1 (de) | 1980-12-18 |
| DE3018662A1 (de) | 1980-12-18 |
| CH641126A5 (en) | 1984-02-15 |
| DE3065265D1 (en) | 1983-11-17 |
| JPS5645703A (en) | 1981-04-25 |
| JPS6327283B2 (enrdf_load_html_response) | 1988-06-02 |
| JPS5645808A (en) | 1981-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3018665A1 (de) | Verfahren und vorrichtung zum regenerieren von schwefelsaeure | |
| EP0022181B1 (de) | Verfahren und Vorrichtung zum Regenerieren von Schwefelsäure | |
| EP2295375B1 (de) | Verfahren und anlage zur aufarbeitung von abfall-schwefelsäuren aus nitrierprozessen | |
| EP0156199B1 (de) | Verfahren zur Herstellung von Nitrobenzol | |
| DE69403968T2 (de) | Verfahren und einrichtung zur regenerierung von fluechtigen saeuren | |
| EP2909132B1 (de) | Verfahren zum konzentrieren wässriger halogenwasserstofflösungen | |
| DE2617340A1 (de) | Nassoxydationsvorrichtung | |
| DE3320527A1 (de) | Verfahren und vorrichtung zur herstellung von schwefelsaeure | |
| DE2311085A1 (de) | Trennung von fluessigen aggressiven stoffgemischen | |
| CH654282A5 (de) | Verfahren und einrichtung zum konzentrieren und reinigen von organische verunreinigungen enthaltender schwefelsaeure. | |
| EP0262510B1 (de) | Verfahren zum Aufkonzentrieren von Schwefelsäure | |
| EP0021381B1 (de) | Verfahren zur Rückgewinnung von Pyrolyseenergie bei der Herstellung von Vinylchlorid durch thermische Spaltung von 1,2-Dichlorethan | |
| DE2700009C3 (de) | Verfahren zur Aufkonzentrierung von verdünnter Phosphorsäure | |
| DE2909029C2 (de) | Verfahren zum Konzentrieren und Reinigen von Schwefelsäure | |
| EP0022473B1 (de) | Verfahren und Vorrichtung zum Regenerieren von Schwefelsäure | |
| DD202858A5 (de) | Verfahren und einrichtung zur erzeugung von ammonnitrat | |
| DE2242055C3 (de) | Verfahren zur Konzentration und Reinigung von durch organische Substanzen verunreinigter Schwefelsäure | |
| EP1534630B1 (de) | Verfahren zur herstellung einer wässrigen lösung von hydroxylamin | |
| DE10302955B4 (de) | Salpetersäurehochkonzentrierung mit Magnesiumnitrat | |
| DE4230099C2 (de) | Verfahren zum Regenerieren gebrauchter Schwefelsäure | |
| EP0566949B1 (de) | Verfahren zum Konzentrieren und Reinigen von Schwefelsäure | |
| DE3015957A1 (de) | Verfahren und vorrichtung zur konzentrierung und reinigung von abfallschwefelsaeure | |
| EP0021210A1 (de) | Verdampfer zum Konzentrieren von Mineralsäure, insbesondere Schwefelsäure | |
| WO2019002121A1 (de) | Energieeffizientes verfahren zur bereitstellung von gereinigtem phosgen-dampf | |
| DE102016212144B4 (de) | Verfahren zur Reduzierung des Schwefelsäuregehalts im Abwasser bei der Konzentrierung von Schwefelsäure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8130 | Withdrawal |