AT153482B - Process for cleaning, in particular for reducing the acid content of mixtures of hydrogen peroxide vapor and water vapor. - Google Patents

Process for cleaning, in particular for reducing the acid content of mixtures of hydrogen peroxide vapor and water vapor.

Info

Publication number
AT153482B
AT153482B AT153482DA AT153482B AT 153482 B AT153482 B AT 153482B AT 153482D A AT153482D A AT 153482DA AT 153482 B AT153482 B AT 153482B
Authority
AT
Austria
Prior art keywords
vapor
hydrogen peroxide
mixtures
cleaning
reducing
Prior art date
Application number
Other languages
German (de)
Original Assignee
Du Pont
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Du Pont filed Critical Du Pont
Application granted granted Critical
Publication of AT153482B publication Critical patent/AT153482B/en

Links

Landscapes

  • Cleaning By Liquid Or Steam (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Reinigung, insbesondere zur Verminderung des Säuregehaltes von Gemischen von   Wasserstoffperoxyddampf   und Wasserdampf. 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 



   Beispiel : Eine durch Elektrolyse von Schwefelsäure hergestellte Lösung von   Überschwefel-   säure wird bei Unterdruck durch ein mit Dampf beheiztes Destillationsrohr geleitet und das austretende Dampfgemisch durch einen Flüssigkeitsabscheider bekannter Art geführt. Die aus dem Flüssigkeitsabscheider abgehenden Dämpfe, die noch erhebliche Mengen von Schwefelsäure enthalten, werden durch einen Steingutturm geleitet, dessen Durchmesser 61 cm beträgt und der mit einer 38 cm hohen Schicht von   Quarzstücken   beschickt ist, deren Durchmesser 6-3 mm bis 1-9 cm beträgt ; die Quarz-   körnerschicht   wird von einer Doppelschicht von   Guttmann-Kugeln   von etwa 10 cm Höhe getragen. 



  Am Unterteil des Turmes unterhalb der Schicht der Guttmann-Kugeln ist eine Öffnung vorgesehen, durch deren Oberteil die von dem Säurenebel befreiten Dämpfe abgehen. Die abgeschiedene Säure fliesst am Boden des Turmes ab. Das aus dem Turm abgehende Dampfgemisch wird in eine unter Vakuum stehende Rektifikationsvorrichtung geleitet, wo sie auf konzentrierteres Wasserstoffperoxyd, z. B. 



  100% iges Wasserstoffperoxyd, verarbeitet wird. Die Menge der in 100   cm3   der so erhaltenen 100 volumprozentigen Wasserstoffperoxydlösung befindlichen Schwefelsäure beträgt nur noch   0. 15   bis   0. 37 g.   



  Bei betriebsmässiger Durchführung des Verfahrens der Erfindung war es z. B. möglich, ein Kondensat zu erhalten, dessen Gehalt an Schwefelsäure durchschnittlich nur   0. 239 g   in 100   ems   betrug. Bei Anwendung vonRasehig-Ringen konnte dagegen der Gehalt an Schwefelsäure nicht weiter als bis auf   0. 75 g   in 100   cm3   vermindert werden. 



   PATENT-ANSPRÜCHE :
1. Verfahren zur Reinigung, insbesondere zur Verminderung des Säuregehaltes von Gemischen von Wasserstoffperoxyddampf und Wasserdampf, welche Säure in   feinverteiltem   Zustand enthalten, durch Leiten des Dampfgemisches durch einen mit Füllkörpern beschickten Turm, dadurch gekennzeichnet, dass die Turmfüllung aus   Quarzstückchen   besteht.



   <Desc / Clms Page number 1>
 



  Process for cleaning, in particular for reducing the acid content of mixtures of hydrogen peroxide vapor and water vapor.
 EMI1.1
 

 <Desc / Clms Page number 2>

 



   Example: A solution of supersulfuric acid produced by the electrolysis of sulfuric acid is passed through a steam-heated distillation tube under reduced pressure and the emerging vapor mixture is passed through a known type of liquid separator. The vapors emanating from the liquid separator, which still contain considerable amounts of sulfuric acid, are passed through an earthenware tower with a diameter of 61 cm and which is filled with a 38 cm high layer of quartz pieces with a diameter of 6-3 mm to 1-9 cm is; the quartz grain layer is supported by a double layer of Guttmann spheres about 10 cm high.



  An opening is provided on the lower part of the tower below the layer of Guttmann spheres, through the upper part of which the vapors freed from the acid mist exit. The separated acid flows off at the bottom of the tower. The vapor mixture leaving the tower is passed into a rectification device under vacuum, where it is concentrated on more concentrated hydrogen peroxide, e.g. B.



  100% hydrogen peroxide is processed. The amount of sulfuric acid in 100 cm3 of the 100 percent by volume hydrogen peroxide solution thus obtained is only 0.15 to 0.37 g.



  When operating the method of the invention it was z. B. possible to obtain a condensate with an average sulfuric acid content of only 0.239 g in 100 ems. When using Rasehig rings, on the other hand, the content of sulfuric acid could not be reduced further than to 0.75 g in 100 cm3.



   PATENT CLAIMS:
1. A method for cleaning, in particular for reducing the acid content of mixtures of hydrogen peroxide vapor and water vapor, which contain acid in a finely divided state, by passing the vapor mixture through a tower filled with packing, characterized in that the tower filling consists of quartz pieces.

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das aus Wasserstoffperoxyddampf und Wasserdampf bestehende Dampfgemiseh zunächst mit Hilfe üblicher Vorabseheider von darin befindlichen Tröpfchen befreit und dann erst über die Quarzfüllung geleitet wird. 2. The method according to claim 1, characterized in that the steam mixture consisting of hydrogen peroxide vapor and water vapor is first freed from droplets contained therein with the help of conventional pre-separators and only then passed over the quartz filling. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Quarzfüllung zu Beginn oder vor Beginn des Durchleiten des Dampfgemisches durch den Turm mit einer zur Lösung EMI2.1 körper und die Schichthöhe so gewählt werden, dass Druckstauungen beim Durchgang des Dampfgemisches vermieden werden, z. B. derart, dass der Durchmesser der Quarzstücke etwa 6 mm bis 2-5 cm und die Schichthöhe etwa 28 bis 50 cm beträgt. 3. The method according to claims 1 and 2, characterized in that the quartz filling at the beginning or before the beginning of the passage of the vapor mixture through the tower with a solution EMI2.1 body and the layer height are chosen so that pressure build-ups are avoided when the steam mixture passes through, e.g. B. such that the diameter of the quartz pieces is about 6 mm to 2-5 cm and the layer height is about 28 to 50 cm.
AT153482D 1934-06-09 1935-06-06 Process for cleaning, in particular for reducing the acid content of mixtures of hydrogen peroxide vapor and water vapor. AT153482B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US153482XA 1934-06-09 1934-06-09

Publications (1)

Publication Number Publication Date
AT153482B true AT153482B (en) 1938-05-25

Family

ID=21770872

Family Applications (1)

Application Number Title Priority Date Filing Date
AT153482D AT153482B (en) 1934-06-09 1935-06-06 Process for cleaning, in particular for reducing the acid content of mixtures of hydrogen peroxide vapor and water vapor.

Country Status (1)

Country Link
AT (1) AT153482B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767052C (en) * 1938-06-05 1951-08-09 Heinrich Schmidt Process for the production of pure hydrogen peroxide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767052C (en) * 1938-06-05 1951-08-09 Heinrich Schmidt Process for the production of pure hydrogen peroxide

Similar Documents

Publication Publication Date Title
DE693766C (en) Process for dewatering organic liquids by azeotropic distillation
AT153482B (en) Process for cleaning, in particular for reducing the acid content of mixtures of hydrogen peroxide vapor and water vapor.
DE2150076B2 (en) Continuous process for obtaining essentially acetophenone-free phenol and hydrocarbons from the tail fraction of the reaction mixture of the cumene hydroperoxide cleavage
DE2042522A1 (en) Process for the production of very pure, aqueous hydrogen peroxide solutions
DE1153733B (en) Process for the recovery of ammonia from coke oven gases
DE677124C (en) Process for reducing the acid content of mixtures of hydrogen peroxide and water vapor
DE1097449B (en) Thermal deaerator with vapor condenser for liquids, especially for boiler feed water
CH186843A (en) Process for reducing the acid content of mixtures of hydrogen peroxide and water vapor.
AT218661B (en) Process for the production of a stable, gaseous, pressurized acetylene-ammonia mixture
AT200159B (en) Process for the production of high percentage hydrogen halide
AT46986B (en) Continuous mash still.
AT137191B (en) Process for the production of acid mixtures suitable for the saccharification of cellulose-containing substances.
DE633390C (en) Process for the production of liquefied sulfur dioxide
AT131083B (en) Process and device for the production of hydrogen peroxide by distillation of persulfuric acid or persulfate solutions.
DE577886C (en) Continuous process for the production of soap and glycerine
AT132723B (en) Continuous process for the production of soap and glycerine.
DE734076C (en) Process for the production of ammonium carbonate from gas water
DE586801C (en) Process for the production of concentrated acetic acid
DE696175C (en) Process for the improved utilization of waste heat in the production of benzene from washing oil
DE457221C (en) Production of sulfur from ammonium polysulphide solutions
DE1961017A1 (en) Method for supplying cells, in particular fuel cells, with gas
AT133645B (en) Process for the production of amino alcohols from the aqueous solutions resulting from the production thereof.
DE625419C (en) Method and device for obtaining noble gases that boil more heavily than oxygen, in particular from air
CH206711A (en) Process and device for the production of hydrogen peroxide.
AT72881B (en) Process and system for the extraction of fiber from wood or other vegetable matter.