DESIGN CRITERIA   UNIT CONVERSION CALCULATOR
Mole Weight:
2.0 Hydrogen H2
4.0 Helium He
8.5 Synthesis (75%H2, 25%N2)
11.0 Coke oven
16.0 Methane CH4
17.0 ammonia (NH3
18.0 Steam (water vapor)
19.0 Natural gas (75% ch4, 25%N2)
26.0 Acetylene C2H2
28.0 Nitrogen N2
28.0 Carbon monoxide CO
29.0 Air
31.0 Flue gas (81%N2, 19% CO2)
32.0 Oxygen O2
39.9 Argon A
44.1 Propane C3H8
44.0 Carbon dioxide CO2
44.0 Nitrous oxide N2O
54.1 Butadiene C4H6
64.1 Sulphur dioxide SO2
70.9 Chlorine Cl2
120.9 Freon 12 CCl2F2
Fg
Correction factor for Sg
  °C °F
Temperature (F):
Input the maximum temperature (design temperature)
T Ft
Correction factor for temperature
  Bar PSI
Pressure:
Input the lowest pressure possible.

If given in PSIA, subtract 14.7 and enter in PSIG cell C6
PSI PSIA   KPa PSI
Volumetric Flow (SCFM):
If you have ACFM, use the conversion below determine the value to input for SCFM Qsg.

IMPORTANT: IF THIS INVOLVES A RECIPROCATION COMPRESSOR OR PULSATING FLOW, DOUBLE THE Qsg VALUE
Qsg g   MPa PSI
Weight Flow, lbs/hr:
You use EITHER SCFM Qsg OR weight flow lbs/hr which is converted to SCFM Qsg and then used above for SCFM Qsg
(Converted weight flow to input as SCFM Qsg)
W     kg/cm2 PSI
Density of Liquid:
(Optional) Default is Water, only affects centripetal force calculation
LBS / FT3 R1 (in)   inches mercury PSI
Density of Gas: LBS / FT3 R2 (in)   inches water PSI
SCFM of equivalent air:
(corrected to 14.7 PSIA and 60F)
Qc R   PSI inches water
CALCULATED SEPARATOR SIZE REQUIRED   ACFM SCFM (Qsg)
For all separators except Receiver Style and based upon approximate inlet ID (inches) Standard Separator Size:
If within 0.1 to the next standard size, consider going up another full size
      MMCFD SCFM
For receiver style separators, due to extra complexity internally they are always a little larger for a given flow Receiver Separator Size:
   
Tangential velocity should not exceed the maximum tangential velocity Vt (max.) Vt
  m3/hr ft3 min
Input a separator size equal to or larger than the calculated size required to achieve the required removal rate based upon the style/efficiency. It is common to oversize the body and attach smaller connections to match piping to handle higher liquid loads. CHOSEN SIZE:
Enter the separator size to determine performance data
      kgs lbs
Maximum Capacity (SCFM):
Accurate to within 2% for 6" to 32" sizes, within 4% for all other sizes
(Qc)   Vt (max.)   LPM lbs./Hr
Maximum Capacity:
Equivalent maximum capacity converted from SCFM to lbs/hr.
lbs/hr     LPH lbs./Hr
% of Maximum Capacity:         GPM lbs./Hr
Maximum Capacity ∆P:
Differential pressure for the maximum capacity ±0.2 Accurate, most accurate to positive pressure to 500 PSI
PSI Liquid Centripetal Force (PSIG):
Theoretical force towards R2 for entraind liquid droplets
  Gal ft3
Actual ∆P:
Calculated differential pressure based upon customers flow rate
PSI Gas Centripetal Force (PSIG):
Theoretical force toward R2 for process gas
  lbs. water ft3 water
Used to properly size drain trap and to ensure the volume of entrained droplets anticipated can be accommodated by the chosen separator size MAXIMUM SEPARATION RATE BY SEPARATOR DESIGN
mm in
% of Weight Flow lbs/hr: GPH: GPM:
To approximate "slug" handling capability, for T, TS and R styles
 GPS:
Type 31L/L1 for horizontal flow or vertical down
         
Type 32L/L2 for vertical up-flow
         
L Series separators combining horizontal and vertical flow paths
  CENTRIPETAL FORCE RATIO
Type T separators
 
The ratio of centripetal force will always be the same as the ratio of the density of the entrained liquid vs density of the gas LIQUID
GAS
Type TS separators
 
Receiver style separators