Process simulation of the fluidized-bed copper oxide process sulfation reaction

✍ Scribed by Yeh, James T. ;Drummond, Charles J. ;Joubert, James I.

• Publisher: American Institute of Chemical Engineers
• Year: 1987
• Tongue: English
• Weight: 711 KB
• Volume: 6
• Category: Article
• ISSN: 0278-4491
• DOI: 10.1002/ep.670060123

✦ Synopsis

The Fluidized-Bed Copper Oxide Process is a regenerative process for the simultaneous removal of both sulfur dioxide (SOJ and nitrogen oxides (NO4 from theflue gas of coal-$red boilers. An ideal-flow reactor model for SO, removal was formulated based on a sulfation reaction kinetics model developed using data from a microbalance reactor. Experimental data obtained from afluidiaed-bed reactor having a cross section measuring 1 .O2 m b y 1.22 m (40 in. by 48 in.) were used to validate the model. The variables in the model were systematically varied to predict reactor performance under different operating conditions. The process variables studied were (1) sorbent copper content, (2) reactor bed depth, and (3) reaction temperature. The reactor performance predictions showed that increasing the copper content of the sorbent from 5 percent to 7 percent would lower the required sorbent recirculation rate by 30 percent. The expanded-bed depth in the reactor was also an important parameter. Effective performance of the process can be obtained with lower sorbent recirculation rates if the expanded-bed depth in the reactor is increased.