Dubuisson Filtration

http://dubuisson-filtration.fr/

Compatibilité Chimique (AIRPEL)

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Les Informations Saisies sur la Table suivante constituent un Guide général de Compatibilité chimique des Filtres AIRPEL avec divers Fluides. La Température, la Pression, La Concentration, ou la nature des contaminants induit une extrême vigilance quand au choix des différents Filtres AIRPEL. DUBUISSON FILTRATION Vous aidera, en fonction de la précision des éléments fournis, à sélectionner les meilleures matériaux pour une durabilité accrue de votre filtre AIRPEL. Cependant il incombe à l'utilisateur finale de s'assurer de la compatibilité effective de nos préconisations dans le cadre de l' application et/ou du Process. De la même manière cela implique les précautions prisent pour la protection des Opérateurs, les autres équipements ainsi que l'environnement. Lorsqu'aucun type d'élastomère n'est mentionné, il apparait que l'étanchéité préconisé est le nitrile dans tous les cas excepté pour l'acier inox où le VITON est monté de série. Dans le cas ou une étanchéité spécifique serait requise, merci de le préciser.
Body Material
Nom Chimique
Symbole Chimique
CI

WB
CS

SS
GM
HAZARD
Remarques
B
Baking Soda






2
See sodium bicarbonate or potassium bicarbonate
Bentonite slurries

+
+
+
+
+
2
See notes 1 & 2. Thixotropic properties may cause DP problems on start-up.
Barium chloride
BaCl2



+

1
Some pitting may be experienced. Cautious use of dual filters which must have special cocks.
Barium Hydroxide
Ba(OH)2



+

1
GM filters or WB dual filters could be used with caution. SS dual filters require special cocks.
Barium Sulphide
BaS



+

1
Use special cocks in dual filters. Some erosion may occur at high temperatures.

+
+
+
+
+
2
SS usually preferred. See notes 1 & 2. Check sterilisation requirements.
Beet Sugar Liquid
See 'Sugar liquids'
Benzene (Benzol)
C6H6
+
+
+
+
+
1
Viton 'O' rings
Benzaldehyde
C6H5CHO
+
+
+
+
+
1
EP 'O' rings. Special cocks required in SS OW filters.
Benzoic Acid
C6H5COOH



+

1
Viton 'O' rings. Dual filters not recommended. Some pitting of SS may be experienced at high temperatures
Bitumen

+
+
+
+
+
2
Viton 'O' seals. Heating jacket probably required.
Black Liquor




+

Viton 'O' rings
Borax
Na2B4O7



+

(1)
EP or Viton 'O' seals. Other materials may be used especially at low concentrations and temperatures.
See notes 1 & 2.
Boric Acid
H3BO3



+
+
(1)
OV & Y- Type filters only (some deterioration may occur)
Brandy




+

2

BrinesNaCl(aq)+++
+
+2
See "water sea" for low concentration brines. Corrosion will occur on CI, WB & CS especially at high conc.
Bunker fuel (or oil)
See Fuel oil
Butadiene
H2C:CHHC:CH2
+

+
+

G1
Viton 'O' rings. CI and CS for OV; Y-Type or scf only.
Butane
CH3CH2CH2CH3
+

+
+
G1
OV & Y- Type filters only. (Liquifiable gas)
Butyl Alcohol
CH3(CH2)2CH2OH



+

1
CI, CS or GM could be used, but some deterioration may occur under exceptional circumstances.
Butyric Acid
CH3CH2CH2COOH



+
+
2
EP or Viton 'O' rings. Do not use dual filters. Some deterioration maybe expected at high temperature
C
Calcium Bisulphite
Ca(HSO3)2




1
Cautious use of dual filters.
Calcium Carbonate slurry
CaCO3 (+ water)
+
+
+
+
+
2
See notes 1 & 2. Note the propensity of calcium carbonate to sedimentation.
Calcium Chloride
CaCl2



+

2
Nothing suitable at high concentration/high temp. Special cocks in OW filters. GM OK at low concentration
CI, CS or WB could be used at low concentrations, but some corrosion will occur. See notes 1 & 2.
Calcium Hydroxide
Ca(OH)2
+


+

2
See Note 1 & 2. Do not use dual filters. Possibility of solids settling under certain circumstances.
Calcium Sulphate
CaSO4
+
+
+
+
+
2
See Note 1 & 2. Precipitation of the solids within the filter may be experienced.
Calgon
Na2O:P2O5



+

2
Use special cocks in Dual filters.
Carbolic Acid
See Phenol
Carbon Dioxide
CO2
+

+
+
+
G2
OV or Y-type only.
Carbon Disulphide
CS2
+

+
+

1
Viton 'O' rings.
Carbon Tetrachloride
CCl4
+
+
+
+
+
1
Viton 'O' seals. If contaminated with water, may attack any metal, especially at elevated temperatures.
Carbonated Water




+
2
Also see 'water' & carbonic acid. (Other materials could be used but SS usually preferred. See notes 1 & 2)
Carbonic Acid
H2CO3
+
+
+
+
+
2
See notes 1 & 2. Also see carbonated water.
Castor Oil

+
+
+
+
+
2
Stainless steel usually preferred
Caustic Potash
KOH





2
See Potassium hydroxide
Caustic Soda
NaOH





2
See Sodium hydroxide
China Clay







See Clay slurries
China Wood Oil (Tung)




+

2

Chlorobenzene
C6H5Cl
+
+
+
+
+
2
Viton 'O' seals
Chloroethane







See Ethyl Chloride
Chloroform
CHCl3
+
+
+
+
+
1
Viton 'O' rings. Stainless steel usually preferred.
Chlorinated water




+

2
Viton 'O' seals. OV or Y-Type only. Some attack may be expected on SS at high concentrations/temps.
CI could be considered at low concentrations/temperatures. See note 2. Also see 'Water - fresh'.
Chocolate

+
+
+
+
+
2
SS usually preferred. Heating jacket usually required. Rotor blade scf ideal. Dual filters non-preferred.
Chromic Acid
H2CrO4



+

1
Do not use OW filters. SS only for concentrations <10% and <50°C
Chromium trioxide







See Chromic acid
Citric Acid




+

2
Special cocks required in OW filters. See notes 1 & 2. Attack may occur above 50°C.
Clay slurries

+
+
+
+
+
2
See notes 1 & 2. The slurry may have thixotropic properties.
Coal Tar

+

+
+

2
Viton 'O' rings. Cautious use of CI or CS if sulphur is present. (NACE MR 0175 may be applied)
Coconut Oil




+
+
2

Coffee



+

2
SS usually preferred (foodstuff) but other materials could be used. Check sterilisation requirements.
Condensate (Water)

+
+
+
+
+
2
See Water - Fresh
Copper Nitrate
Cu(NO3)2



+

2
See notes 1 & 2.
Copper Sulphate
CuSO4



+

(1)
See notes 1 & 2.
Cotton seed oil




+
+
2

Creosote

+
+
+
+
+
1

Cresylic Acid & Cresol




+

2
Viton 'O' rings
Cutting Oils - water emulsions

+
+
+
+
+
2
See Note 1 & 2.
Cyclohexane
C6H12
+
+
+
+
+
1

+ = Suitable filter type. Always check remarks column

CI = Cast Iron; WB = Water body (Cast iron body with bronze internals); CS = Cast steel; SS = Stainless steel (316); GM = Gun metal (bronze)

GENERAL NOTES

  1. Do not used cast iron or cast steel dual filters on water based solutions (Cock seizure will occur as a result of corrosion)
  2. Some corrosion will occur if cast iron or steel filters are used on water based solutions. This corrosion may weaken the filter over time and corrosion products may contaminate the filtrate.
  3. Cast iron filters should be used with extreme caution below 0°C & above 100°C.
  4. Do not use steel filters below -20°C unless special low temperature steel has been specified.
  5. Water body (WB) dual filters should not be used above 150°C (or below 0°C).
  6. The temperature limitations for 'O' seals are :
      • Nitrile (NBR) -30°C to +120°
      • Viton (fluorocarbon): -20°C to +200°C {Viton is a DuPont trade mark} EP
      • (EPDM): -50°C to +150°
      • PFA encapsulated Viton: -20°C to +200°C
      • PFA encapsulated silicon: -55°C to +260°C
    Notes:
    1) PFA encapsulated seals should only be specified if absolutely necessary!
    2) Some chemicals may further restrict the operating temperature range of the seal material - check with a seal manufacturer if in doubt.
  7. A 'use special cocks' comment implies the use of hardened stainless steel cocks (or GM cocks, if appropriate) in stainless steel OW filters in place of Ni/PTFE coated cocks.
  8. Mixtures of chemicals may react more aggressively than the individual constituents.
  9. If there is any doubt about filter material selection, the user should consider conducting compatibility trials before installing the filter.
  10. The computer based version of this chart contains data on each chemical accessible by 'hovering' the cursor over the chemical name.
  11. The "Hazard" column indicates the hazard category in accordance with the European Pressure Directive 97/23/EC. The categories are:- Category 1 = Hazardous;
Sub-category (1) = Hazardous depending on composition or concentration - discuss with Airpel: Sub-category 1(xx) = Hazardous (flammable) above the temperature xx°C (flashpiont);
Category 2 = Non-hazardous. The prefix 'G' indicates that the chemical is gaseous at normal room temperature and pressure (even though it may be being filtered as a liquid).