| Autor: |
Kurt V. Waller, Tore K. Gustafsson |
| Rok vydání: |
1983 |
| Předmět: |
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| Zdroj: |
Chemical Engineering Science. 38:389-398 |
| ISSN: |
0009-2509 |
| DOI: |
10.1016/0009-2509(83)80157-2 |
| Popis: |
A systematic treatment of the dynamics and control of acid-base reactions is presented. A state model consisting of mass balances for the species present is formed. Through a linear transformation of the concentration vector a new model is set up. The state vector of this model is partitioned into a reaction invariant and a reaction variant part. The model is thus split into two parts, one describing the physical properties of the reactor system independent of chemical reactions, the other describing the chemical reactions. For fast acid-base reactions the reaction invariant part of the model is sufficient to define the thermodynamic state of the system. The reaction rate vector is thus eliminated from the model. In this case the reaction variant part of the model consists of a static equation, relating pH to the reaction invariant state variables. The model obtained provides a sound basis for design of control loops for feedback and feedforward control of pH. As a direct application a new scheme for adaptive control of pH is proposed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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