AT257549B - Process for cleaning exhaust air from viscose factories - Google Patents

Process for cleaning exhaust air from viscose factories

Info

Publication number
AT257549B
AT257549B AT68365A AT68365A AT257549B AT 257549 B AT257549 B AT 257549B AT 68365 A AT68365 A AT 68365A AT 68365 A AT68365 A AT 68365A AT 257549 B AT257549 B AT 257549B
Authority
AT
Austria
Prior art keywords
sep
exhaust air
cleaning exhaust
viscose
factories
Prior art date
Application number
AT68365A
Other languages
German (de)
Inventor
Edmund Richter
Original Assignee
Spinnfaser Ag
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
Priority claimed from DES89460A external-priority patent/DE1233978B/en
Application filed by Spinnfaser Ag filed Critical Spinnfaser Ag
Application granted granted Critical
Publication of AT257549B publication Critical patent/AT257549B/en

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  • Gas Separation By Absorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Treating Waste Gases (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



  Verfahren zur Reinigung der Abluft von Viskosefabriken 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 gen (ausgedrückt in   %   der vorhandenen Fe-Menge)   derFerrihydroxyd-Suspension   zugesetzt und die in der dritten Spalte angegebenen Grenzbelastungen gefunden : 
 EMI2.1 
 
<tb> 
<tb> Versuch <SEP> Zugabe <SEP> Grenzbelastung
<tb> A <SEP> keine <SEP> 1, <SEP> 8gHS/m"
<tb> B <SEP> 0,2% <SEP> Ni <SEP> 2,2 <SEP> g <SEP> H2S/m3
<tb> C <SEP> 0,18%Ni <SEP> 2, <SEP> 5 <SEP> g <SEP> H <SEP> Sims <SEP> 
<tb> 0, <SEP> 02%Co
<tb> D <SEP> 0, <SEP> 2% <SEP> Co <SEP> 3, <SEP> OgHS/m
<tb> 
 
PATENTANSPRÜCHE : 
1.

   Verfahren zur Reinigung der Abluft von Viskosefabriken mittels alkalischer Eisenhydroxydsuspensionen, wobei pro   Mol H, S   wenigstens 7,5 Mol Fe(OH)3 eingesetzt werden und die Abluft mit einer Geschwindigkeit von wenigstens 30 cm/sec durch die Eisenhydroxydsuspensionen hindurchgeleitet wird und wobei etwa 725 Mol H2S/h umgesetzt werden, worauf aus der von   HjS   befreiten Abluft in bekannter Weise der Schwefelkohlenstoff entfernt wird nach Patent Nr. 195 902, dadurch gekennzeich net, dass man eine alkalische Eisenhydroxyd-Suspension verwendet, die geringe Mengen Nickel- oder bzw. und Kobaltoxydhydrate enthält.



   <Desc / Clms Page number 1>
 



  Process for cleaning exhaust air from viscose factories
 EMI1.1
 

 <Desc / Clms Page number 2>

 gen (expressed in% of the amount of Fe present) was added to the ferric hydroxide suspension and the limit loads indicated in the third column were found:
 EMI2.1
 
<tb>
<tb> Trial <SEP> addition <SEP> limit load
<tb> A <SEP> none <SEP> 1, <SEP> 8gHS / m "
<tb> B <SEP> 0.2% <SEP> Ni <SEP> 2.2 <SEP> g <SEP> H2S / m3
<tb> C <SEP> 0.18% Ni <SEP> 2, <SEP> 5 <SEP> g <SEP> H <SEP> Sims <SEP>
<tb> 0, <SEP> 02% Co
<tb> D <SEP> 0, <SEP> 2% <SEP> Co <SEP> 3, <SEP> OgHS / m
<tb>
 
PATENT CLAIMS:
1.

   Process for cleaning the exhaust air from viscose factories by means of alkaline iron hydroxide suspensions, at least 7.5 mol Fe (OH) 3 being used per mol H, S and the exhaust air being passed through the iron hydroxide suspensions at a speed of at least 30 cm / sec and about 725 Mol H2S / h are reacted, whereupon the carbon disulfide is removed in a known manner from the exhaust air freed from HjS according to patent no. 195 902, characterized in that an alkaline iron hydroxide suspension is used which contains small amounts of nickel or or and Contains cobalt oxide hydrates.

Claims (1)

2. Verfahren nach anspruch 1, dadurch gekennzeichnet, dass man vorzugsweise 0,1 bis 0, 5% Nickel oder bzw. und Kobalt als Oxydhydrate, bezogen auf die angewendete Menge Eisen in der Eisenhydroxyd-Suspension, verwendet. 2. The method according to claim 1, characterized in that 0.1 to 0.5% nickel or or and cobalt is preferably used as oxide hydrates, based on the amount of iron used in the iron hydroxide suspension. 3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, dass man vorzugsweise eine Mischung von Nickel- und Kobaltoxydhydraten im Verhältnis von 10 Teilen Nickel zu 1 Teil Kobalt verwendet. 3. The method according to claim 1 and 2, characterized in that a mixture of nickel and cobalt oxide hydrates in a ratio of 10 parts of nickel to 1 part of cobalt is preferably used.
AT68365A 1964-02-11 1965-01-27 Process for cleaning exhaust air from viscose factories AT257549B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES89460A DE1233978B (en) 1955-03-24 1964-02-11 Process for the recovery of sulfur and carbon disulfide from the exhaust air containing H S and CS from viscose processing plants

Publications (1)

Publication Number Publication Date
AT257549B true AT257549B (en) 1967-10-10

Family

ID=7515125

Family Applications (1)

Application Number Title Priority Date Filing Date
AT68365A AT257549B (en) 1964-02-11 1965-01-27 Process for cleaning exhaust air from viscose factories

Country Status (1)

Country Link
AT (1) AT257549B (en)

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