Absorption - Introduction to Carbon Capture and Sequestration - page 172

(d) (e)

vapor exits
through
slots in cap

cap

plate

chimney

vapor from
stage below

(f) (g)

Figure 5.2.2 ( Continued )

(d) and (e) Bubble cap trays.
(f) Flow through a bubble cap.
(g) A single bubble cap.

teach us a lot about the feasibility of our separation. Along those same
lines, for our purposes here we will use only the most elementary design
tools, which will still give us a lot of insight into the most important
parameters of the process.

Thermodynamics

At this point in our tower design we need to know, for a given temperature
and partial pressure of CO 2 , how much CO 2 will be absorbed in the solvent.
The simplest thermodynamic model that gives us this information is
Henry's law (see Box 5.2.2 ), which states that the vapor pressure of an