Advancements in Development of Chemical-Looping Combustion: A Review

<table>The oxygen added ratio, <svg height="10.4375" id="M107" style="vertical-align:-2.17035pt" version="1.1" viewbox="0 0 7.0374999 10.4375" width="7.0374999" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.675)"><path d="M384 393q0 -15 -11.5 -30t-26.5 -18q-9 -2 -19 11q-34 44 -86 44q-58 0 -99 -55t-41 -135q0 -48 15.5 -77.5t55.5 -43.5q23 -8 56 -15q50 -11 77.5 -30.5t27.5 -61.5q0 -79 -96 -141l-19 14q42 47 42 90q0 22 -14.5 35t-50.5 22q-43 10 -63 17q-59 19 -84 55.5t-25 101.5
q0 69 34.5 127.5t92.5 95.5q77 49 144 49q39 0 64.5 -15.5t25.5 -39.5z" id="x1D70D"></path></g>
</svg>, needed to avoid carbon formation when CH<sub>4</sub> is used as fuel [<a href="/journals/ijce/2009/710515/#B103">104</a>].</table>

International Journal of Chemical Engineering

fig9

Figure 9

Figure 9: Advancements in Development of Chemical-Looping Combustion: A Review 