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Title: Parameter Identification and On-line Estimation of a Reduced Kinetic Model

Conference ·
OSTI ID:7423

In this work, we present the estimation techniques used to update the model parameters in a reduced kinetic model describing the oxidation-reduction re- actions in a hydrothermal oxidation reactor. The model is used in a nonlinear model-based controller that minimizes the total aqueous nitrogen in the reac- tor effluent. Model reduction is accomplished by com- bining similar reacting compounds into one of four component groups and considering the global reac- tion pathways for each of these groups. The reduced kinetic model developed for thk reaction system pro- vides a means to characterize the complex chemical reaction system without considering each chemicaJ species present and the reaction kinetics of every pos- sible reaction pathway. For the reaction system under study, model reduction is essential in order to reduce the computational requirement so that on-line imple- mentation of the nonlinear model-based controller is possible and also to reduce the amount of a priori information required for the model.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EE)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
7423
Report Number(s):
LA-UR-99-910; ON: DE00007423
Resource Relation:
Conference: 1999 American Control Conference, San Diego, CA, June 2-4, 1999
Country of Publication:
United States
Language:
English