Introduction to Carbon Capture - Introduction to Carbon Capture and Sequestration - page 160

5. Which statement is not true about oxycombustion?
a. The current technology to separate oxygen is cryogenic
distillation
b. CO 2 is added to the oxygen to lower the temperature in the
boiler
c. The theoretical effi ciency of an oxycombustion plant is higher
than combustion in air
d. The most expensive part of oxycombustion is the CO 2
separation

6. Which statement about chemical looping is not correct?
a. Chemical looping involves the transportation of solid parti-
cles from one reactor to another
b. The solid particles “carry” the oxygen
c. Oxygen is consumed in the reducing reaction through:
2Me 2MeO

d. None of the above

+ O 2 →

7. Which statement about entropy is not correct?
a. The Boltzmann relation between entropy and number of con-
fi gurations is S k B ln Ω

b. The entropy of mixing is higher at higher temperatures
c. The smaller the concentration of component A in a binary
mixture, the higher the entropy of mixture per molecule A

=

8. Which statement best describes the parasitic energy of a CCS
process?
a. The total energy needed for the separation and compression
of CO 2
b. The electric energy that a power plant cannot deliver
because of the CCS process
c. The higher the temperature of the heat needed for regenera-
tion, the higher the parasitic energy