CH498045A - Process for the production of chlorine dioxide in aqueous solution and use of the solution thus obtained - Google Patents
Process for the production of chlorine dioxide in aqueous solution and use of the solution thus obtainedInfo
- Publication number
- CH498045A CH498045A CH1237766A CH1237766A CH498045A CH 498045 A CH498045 A CH 498045A CH 1237766 A CH1237766 A CH 1237766A CH 1237766 A CH1237766 A CH 1237766A CH 498045 A CH498045 A CH 498045A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- solution
- chlorine dioxide
- sodium
- production
- Prior art date
Links
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 title claims description 38
- 239000000243 solution Substances 0.000 title claims description 27
- 239000004155 Chlorine dioxide Substances 0.000 title claims description 19
- 235000019398 chlorine dioxide Nutrition 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 17
- 239000007864 aqueous solution Substances 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 20
- 239000002253 acid Substances 0.000 claims description 16
- 239000003054 catalyst Substances 0.000 claims description 10
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 claims description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 229960002218 sodium chlorite Drugs 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 4
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 2
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims description 2
- 229910021562 Chromium(II) fluoride Inorganic materials 0.000 claims description 2
- 229910021556 Chromium(III) chloride Inorganic materials 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- 229940072049 amyl acetate Drugs 0.000 claims description 2
- 229910001919 chlorite Inorganic materials 0.000 claims description 2
- 229910052619 chlorite group Inorganic materials 0.000 claims description 2
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 claims description 2
- QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical compound [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 claims description 2
- 239000011636 chromium(III) chloride Substances 0.000 claims description 2
- 235000007831 chromium(III) chloride Nutrition 0.000 claims description 2
- RNFYGEKNFJULJY-UHFFFAOYSA-L chromium(ii) fluoride Chemical compound [F-].[F-].[Cr+2] RNFYGEKNFJULJY-UHFFFAOYSA-L 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910000361 cobalt sulfate Inorganic materials 0.000 claims description 2
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 2
- 230000000249 desinfective effect Effects 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 claims description 2
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 claims description 2
- RXTNIJMLAQNTEG-UHFFFAOYSA-N methylamyl acetate Natural products CCCCC(C)OC(C)=O RXTNIJMLAQNTEG-UHFFFAOYSA-N 0.000 claims description 2
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims description 2
- 150000002894 organic compounds Chemical class 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 claims description 2
- 229910000342 sodium bisulfate Inorganic materials 0.000 claims description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 2
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 claims description 2
- 229910001488 sodium perchlorate Inorganic materials 0.000 claims description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/02—Oxides of chlorine
- C01B11/022—Chlorine dioxide (ClO2)
- C01B11/023—Preparation from chlorites or chlorates
- C01B11/024—Preparation from chlorites or chlorates from chlorites
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Verfahren zur Herstellung von Chlordioxyd in wässriger Lösung und Verwendung der so erhaltenen Lösung
Gegestand des Patentes Nr. 481 839 ist ein Verfahren zur Herstellung von Chlordioxyd in wässriger Lösung aus Natriumchlorit und Säure, insbesondere Salzsäure, das dadurch gekennzeichnet ist, dass man auf eine mindestens 10%ige NaClO2-Lösung mindestens 10%ige Säure in einem molaren Überschuss von 250-300%, bezogen auf das NaCIO,, in Gegenwart mindestens eines Katalysators zur Einwirkung brIngt Geeignete Katalysatoren sind Wasserstoffperoxyd, Kaliumpersulfat, Kaliumperborat, Natriumperchlorat, Kobalt-, Nickel- oder Kupfersulfat, Natriumbisulfat oder Natriumbisulfit.
Als weitere Katalysatoren kommen auch Natriumchlorat, Chrom(II)-fluorid, Chrom(III)-chlorid, organische Verbindungen wie Oxalsäure, Weinsäure, Methylalkohol und Amylacetat in Frage. Die durch dieses Verfahren erhältliche Chlordioxydlösung lässt sich direkt zur Wasserentkeimung verwenden.
Während man bei dem vorstehend beschriebenen Verfahren die Verwendung mindestens 10%iger Chloritlösungen und mindestens 10%iger Säure zwecks Erzielung günstiger Reaktionszeiten sowie eines direkt zur Wasserentkeimung geeigneten Produkts für notwendig hielt, wurde inzwischen festgestellt, dass man mit Vorteil auch mit verdünnteren, nämlich mindestens 5%igen NaClO.2-Lösungen und mindestens 5%iger Säure arbeiten kann.
Gegenstand vorliegender Erfindung ist daher ein Verfahren zur Herstellung von Chlordioxyd in wässriger Lösung aus Natriumchlorid und Säure, insbesondere Salzsäure, das dadurch gekennzeichnet ist, dass man auf eine mindestens 5%ige NaClO3-Lösung mindestens 5%ige Säure in einem molaren Überschuss von 250 - 300%, bezogen auf das NaCIOe, in Gegenwart mindestens eines Katalysators zur Einwirkung bringt.
Die erfindungsgemäss erhältliche Chlordioxydlösung kann zur Wasserentkeimung, unter den im Hauptpatent beschriebenen Bedingungen, eingesetzt werden.
Beispiel 1
In einem ersten Vorratsbehälter befindet sich eine 5%ige Natriumchloritlösung, die 2 g Natriumpersulfat pro Liter enthält. Ein zweiter Vorratsbehälter ist mit
6%iger Salzsäure beschickt. Beide Lösungen werden im Verhältnis 1:1 (Volumina) einer Reaktionszone zugeführt und dort ca. 10 Minuten lang bei Zimmertemperatur gemischt. Die Ausbeute an Chlordioxyd beträgt mehr als
90%.
Beispiel 2
Man arbeitet gemäss dem Verfahren von Beispiel 1, jedoch unter Verwendung einer 7,5%igen Natriumchlo ritlösung und 9%iger Salzsäure. Die Ausbeute an Chlor dioxyd beträgt mehr als 95%.
PATENTANSPRÜCHE
I. Verfahren zur Herstellung von Chlordioxyd in wäss riger Lösung aus Natriumchlorit und Säure, insbesondere
Salzsäure, dadurch gekennzeichnet, dass man auf eine mindestens 5%ige Natriumchloritlösung mindestens
5%ige Säure in einem molaren Überschuss von 250-300%, bezogen auf das NaCIOo, in Gegenwart mindestens eines
Katalysators zur Einwirkung bringt.
II. Verwendung der nach dem Verfahren gemäss Patentanspruch I erhaltenen Chlordioxydlösung zur Wasser entkeimung. wobei man den pH-Wert bei 7,0 bis 7,4 hält.
**WARNUNG** Ende DESC Feld konnte Anfang CLMS uberlappen**.
Process for the production of chlorine dioxide in aqueous solution and use of the solution thus obtained
The subject of patent no. 481 839 is a process for the production of chlorine dioxide in aqueous solution from sodium chlorite and acid, in particular hydrochloric acid, which is characterized in that an at least 10% NaClO2 solution is at least 10% acid in a molar excess of 250-300%, based on the NaClO, in the presence of at least one catalyst. Suitable catalysts are hydrogen peroxide, potassium persulfate, potassium perborate, sodium perchlorate, cobalt, nickel or copper sulfate, sodium bisulfate or sodium bisulfite.
Sodium chlorate, chromium (II) fluoride, chromium (III) chloride, organic compounds such as oxalic acid, tartaric acid, methyl alcohol and amyl acetate can also be used as further catalysts. The chlorine dioxide solution obtained through this process can be used directly for water disinfection.
While the use of at least 10% chlorite solutions and at least 10% acid was considered necessary in the process described above in order to achieve favorable reaction times and a product directly suitable for water disinfection, it has now been found that it is also advantageous to use more dilute solutions, namely at least 5 % NaClO.2 solutions and at least 5% acid can work.
The present invention therefore relates to a process for the production of chlorine dioxide in aqueous solution from sodium chloride and acid, in particular hydrochloric acid, which is characterized in that an at least 5% NaClO3 solution is at least 5% acid in a molar excess of 250 - 300%, based on the NaCIOe, in the presence of at least one catalyst to act.
The chlorine dioxide solution obtainable according to the invention can be used for water disinfection under the conditions described in the main patent.
example 1
A 5% sodium chlorite solution containing 2 g of sodium persulfate per liter is located in a first storage container. A second storage container is with
6% hydrochloric acid charged. Both solutions are fed to a reaction zone in a ratio of 1: 1 (volumes) and mixed there for about 10 minutes at room temperature. The yield of chlorine dioxide is more than
90%.
Example 2
The procedure of Example 1 is followed, but using a 7.5% sodium chloride solution and 9% hydrochloric acid. The yield of chlorine dioxide is more than 95%.
PATENT CLAIMS
I. Process for the production of chlorine dioxide in aqueous solution of sodium chlorite and acid, in particular
Hydrochloric acid, characterized in that at least a 5% sodium chlorite solution is used
5% acid in a molar excess of 250-300%, based on the NaCIOo, in the presence of at least one
Brings catalyst to act.
II. Use of the chlorine dioxide solution obtained by the process according to patent claim I for disinfecting water. keeping the pH at 7.0 to 7.4.
** WARNING ** End of DESC field could overlap beginning of CLMS **.
Claims (1)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1237766A CH498045A (en) | 1965-03-12 | 1966-08-26 | Process for the production of chlorine dioxide in aqueous solution and use of the solution thus obtained |
| BE702964D BE702964A (en) | 1965-03-12 | 1967-08-23 | |
| FR118851A FR95116E (en) | 1965-03-12 | 1967-08-24 | Process for the manufacture of chlorine dioxide in solution and use of the solution thus obtained. |
| AT785367A AT282545B (en) | 1965-03-12 | 1967-08-25 | Process for the preparation of aqueous solutions of chlorine dioxide |
| ES344437A ES344437A2 (en) | 1965-03-12 | 1967-08-25 | A process for the manufacture of aqueous solutions of chlorine bioxide from sodium and acid chlorite, in particular of chlorhydroid acid. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE661005A BE661005A (en) | 1965-03-12 | 1965-03-12 | |
| CH1237766A CH498045A (en) | 1965-03-12 | 1966-08-26 | Process for the production of chlorine dioxide in aqueous solution and use of the solution thus obtained |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH498045A true CH498045A (en) | 1970-10-31 |
Family
ID=4382426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1237766A CH498045A (en) | 1965-03-12 | 1966-08-26 | Process for the production of chlorine dioxide in aqueous solution and use of the solution thus obtained |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT282545B (en) |
| BE (1) | BE702964A (en) |
| CH (1) | CH498045A (en) |
| ES (1) | ES344437A2 (en) |
| FR (1) | FR95116E (en) |
-
1966
- 1966-08-26 CH CH1237766A patent/CH498045A/en not_active IP Right Cessation
-
1967
- 1967-08-23 BE BE702964D patent/BE702964A/xx unknown
- 1967-08-24 FR FR118851A patent/FR95116E/en not_active Expired
- 1967-08-25 ES ES344437A patent/ES344437A2/en not_active Expired
- 1967-08-25 AT AT785367A patent/AT282545B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR95116E (en) | 1970-07-24 |
| AT282545B (en) | 1970-06-25 |
| BE702964A (en) | 1968-02-23 |
| ES344437A2 (en) | 1968-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |