Page 200 - New Trends In Coal Conversion

Technologies for control of sulfur and nitrogen compounds and particulates 163

Sweep gas
Retentate (O 2 -lean gas) Retentate

Flue gas
N 2 N
2
O 2– O 2–
High-P Low-P O2 High-P O2 Low-P O2
O2 side Vacuum
side side side
Air Flue gas + O 2 Air Permeate
(O -rich gas)
2

Feed Permeate Feed
-rich gas)
(O 2

CO 2
HGF

Furnace
ITM
Recirculation

O Coal
2

Nitrogen Air
turbine

HP steam LP steam
Economizer Compressor
generation generation
Storage
Figure 6.7 Implementation of ion transport membrane (ITM) 4-end mode (upper left) and 3-end
mode (upper right) and 4-end integration (lower) of ITM in the Oxy-fuel PCPP. Pulverized Coal
Power Plant (PCPP), Hot Gas Filtration (HGF), Low Pressure (LP).
Adapted from Stadler, H., Beggel, F., Habermehl, M., Persigehl, B., Kneer, R., Modigell, M.,
Jeschke, P., 2011. Oxyfuel coal combustion by efficient integration of oxygen transport
membranes. International Journal of Greenhouse Gas Control 5 (1), 7e15.