TY - JOUR
T1 - The application of automated feedback and feedforward control to a LED-based photocatalytic reactor
AU - Khodadadian, Maryam
AU - Galnares de la Garza, F.O.
AU - van Ommen, Ruud
AU - Stankiewicz, Andrzej
AU - Lakerveld, Richard
PY - 2019
Y1 - 2019
N2 - An optimal photon utilization is important for the economic performance of a photocatalytic reactor. However, for the desired reactor performance, it is often difficult to predict the required photon utilization. In this work, automated feedback and feedforward controllers are investigated to maintain the reactor conversion close to a desired value by adjusting the photon irradiance within a LED-based photocatalytic reactor for toluene degradation. The feedback controller was able to control the conversion during a set-point tracking experiment and was able to mitigate the effects of catalyst deactivation in an automated fashion. The feedforward controller was designed based on an empirical steady-state model to mitigate the effect of changing toluene inlet concentration and relative humidity, which were measured input disturbances. The results demonstrated that feedback and feedforward control were complementary and could mitigate the effects of disturbances effectively such that the photocatalytic reactor operated close to desired conditions at all times. The presented work is the first example of how online analytical technologies can be combined with “smart” light sources such as LEDs to implement automated process control loops that optimize photon utilization. Future work may expand on this concept by developing more advanced control strategies and exploring applications in different areas.
AB - An optimal photon utilization is important for the economic performance of a photocatalytic reactor. However, for the desired reactor performance, it is often difficult to predict the required photon utilization. In this work, automated feedback and feedforward controllers are investigated to maintain the reactor conversion close to a desired value by adjusting the photon irradiance within a LED-based photocatalytic reactor for toluene degradation. The feedback controller was able to control the conversion during a set-point tracking experiment and was able to mitigate the effects of catalyst deactivation in an automated fashion. The feedforward controller was designed based on an empirical steady-state model to mitigate the effect of changing toluene inlet concentration and relative humidity, which were measured input disturbances. The results demonstrated that feedback and feedforward control were complementary and could mitigate the effects of disturbances effectively such that the photocatalytic reactor operated close to desired conditions at all times. The presented work is the first example of how online analytical technologies can be combined with “smart” light sources such as LEDs to implement automated process control loops that optimize photon utilization. Future work may expand on this concept by developing more advanced control strategies and exploring applications in different areas.
KW - Photocatalytic reactors
KW - Light emitting diodes
KW - Feedback control
KW - Feedforward control
KW - Light utilization optimization
KW - Volatile organic compounds
UR - http://www.scopus.com/inward/record.url?scp=85059913788&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2018.12.134
DO - 10.1016/j.cej.2018.12.134
M3 - Article
SN - 1385-8947
VL - 362
SP - 375
EP - 382
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -