Answer / verma d k

absorber a process equipment are used to remove one or
more gaseous component from gaseous mixture by using
suitable type solvent mostly present in lessr quantity.
Scrubber are basically pollution control equipment used to
scrub out air pollutant ( mainly particultes, and acid
gases) from exhaust system.
Mechanism of Scrubber: inetial impaction or diffusion
method mostly and lesser use of chemical affinity.
Mechanism of absorber: Chemical affinity

Answer / pafl

Absorber is used mostly for removal of only gaseous component from gaseous stream using suitable solvent which then is regenerated while scrubber is used to remove pollutant from outgoing gases mostly pollutants are gases (acid gases), particulate, dust etc. while there is no necessary regeneration of solvent in scrubber other assembly is similar in both absorber and scubber

Answer / khaja moizuddin

Scrubber neutralize the ph of the evolved gaseous mixture where absorber dont

Answer / nag

absorber: which seperates the particles based on the
affinity between particles and stationary absorbent.
scrubber: which seperates the heavier particles based on
the velocity principle. when ever heavy particles collides
with scrubber inclined surface, velocity will become zero.

Question 94 - The resolution of separation, Rs for chromatography is given by the formula Rs = (difference in retention time) / (average width at the base). In a chromatogram, 3 peaks a, b and c are found. Average widths W at the bases of the solutes are : Wa = 20 s, Wb = 40 s, Wc = 30 s. Resolutions of separation, Rs for solutes b and c in comparison to a are 2 and 4 respectively. The differences in retention times T for b and c in comparison to a are (Tb - Ta) and (Tc - Ta), Ta = Tc - Tb : (a) Form 2 equations involving Rs as a function of Wa, Wb, Wc, Ta, Tb and Tc. (b) Find the values of Ta, Tb and Tc.

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