Absorption - Introduction to Carbon Capture and Sequestration - page 227

5. At a pH of 9 what percentage of CO 2 dissolved in water is in
the form of HCO 3 − ?
a. 100%
b. 75%
c. 50%
d. 25%
e. 0%
6. Which statement about the interactions of CO 2 with amines is
not correct?
a. The chemistry of CO 2 with primary amines is: CO 2 :amine=1:2
b. The chemistry of CO 2 with secondary amines is:
CO 2 :amine=1:1
c. The reaction rates of tertiary amines with CO 2 are generally
fast, but slower than primary or secondary ones
d. The chemistry of CO 2 with tertiary amines is: CO 2 :amine=1:1
7. Which statement about Ionic Liquids (IL) is correct?
a. Ionic liquids have a relatively low vapor pressure
b. Ionic liquids have a low melting temperature
c. Ionic liquids react with CO 2 with a 1:1 chemistry if the anion
is functionalized with an amine
d. Answers A, B, and C are correct
8. Which term does not contribute to the parasitic energy of an
absorption process?
a. Compression
b. Pumping of fl uids
c. Heating of the absorbent
d. Cooling of the fl ue gas
9. Which part of an optimized amine process has the largest
energetic losses?
a. Absorber
b. Stripper
c. Condenser
d. Heat exchanger
e. Compressor