Process dynamic models for heterogeneous chemical reactors - an application of dynamic singularity theory

✍ Scribed by Shyh-Hong Hwang; Hsueh-Chia Chang

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 697 KB
• Volume: 41
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(86)87180-9

✦ Synopsis

By analyzing bifurcations from the marginal gain settings of a nonlinear reactor under PIcontrol, several oharacteristios of the closed-loop reactor dynamics are revealed via the center manifold projection and normal form techniques of dynamic singularity theory. Of particular practical interests are the effects of set-point error which can often destabilize a nonlinear reactor. It is shown that judicious choice of the set-point developed here can reduce such undesirable effects. The analysis also offers extremely low dimensional nonlinear models which faithfully reproduce all the closed-loop dynamics and are especially accurate near the marginal gains. These reduced models are hence ideal for the design and tuning of reactor controllers.