Page 282 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition

254 Applied Process Design for Chemical and Petrochemical Plants

'dire ?htra,inaont Xesh SDecifications
A. Applicntion Service
uni, Pric.
VU No. 1. Source of 3ntrainment:
DRUM OR TANK SPECIFICAT~NI n -
I.." Y.. 2. Operatin7 Conditions: Give (1) Formal (2) &.ximum
(3) I<inirrm, where possible
Te:.oerature
Pr-ssure
Vapor Phase
Flow Rate
*Vel0 ci ty
Density at operatin_r conditions
i .o le cular Yeirht
Coiposition or Kature of Pbse
Lipaid Zntninaent Phase
Quantity (if known) :
Dens1 ty :
ViocositJ:
Surface Tension:
Composition or Uiture of Entrainnent:
Droglet Sizes or distribution (if known):
Solids Content (Composition and Quantity):
Dissolved:
3r;spended:
3. Perfornance
AllonaSle Totil Separator Pressure Dro?:
Allowable Xesh Pressure Drop:
Allorrible Entralment :
Yeah Thickness Recomended:
E. Construction and Installation

BY 1 ChhY I I.". I I... I R.V. I h.. I 1. Vessel Lensth
*Dia*ae t er . I. D:
I.* I I I I I
P.O. T.: Construction Yaterial:
+Position (Eorizontal, Vertical, Inclined):
Figure 4-25. Specification design sheet for separator using wire
mesh. +Shape (Circular, Square, etc.):
Type (5'vepor3tor, Still, Drum. etc.):
Existing or Proposed:
Heavy oil with suspended matter. This might plug. A 2. ESltrsim.ent Nesh
light oil or solvent spray would be recommended for Construction Xaterial
flushing the mesh. Separator Kesh

Support Grid
Fiber Beds/Pads Impingement Eliminators Installation Kethod (Dlaensions)
Vessel Open End:
The use of fiber packing held between wire mesh con- &$anhole (size):
taining screens is best applied in the very low micron C. S?ecial Conditions:
range, generally 0.1 to > 3 microns with recoveries of *Assumes vessel size fixed prior to mesh lnoulry
entrained liquid of up to 99.9'7% (by weight). Figures 4 Figure 4-26. Wire entrainment mesh specifications.
27A, B, and C illustrate the design concept and its corre-
sponding data table indicates expected performance. The
fibers used mean the bed packing can be fabricated from removed by direct interception, inertial impaction, and
fine glass, polypropylene fibers, or can be selected to be Brownian capture.
the most resistant to the liquid mist entering the unit The design rating for this equipment is best selected by
from corrosive plant operations such as sulfuric acid, the manufacturers for each application.
chlorine, nitric acid, ammonia scrubbing for sulfur oxides The concept of removal of entrained liquid particle is
control, and many others. The entrained particles are essentially the same as for wire mesh designs, except the