| Summary: | 碩士 === 國立臺灣科技大學 === 化學工程研究所 === 81 === Fully realizing the chemical process is useful to predict the
production and the transformed situations of quality when the
reaction conditions are changed. Also, it can be reference of
making control strategy and designing the controller. In this
paper, we analyzed the phenomena of multiplicity based on the
main part of real chemical process, the system of reactor and
flash drum. Also, we discussed the transformation of stead-
state point because of recycle. The transformation of stead-
state point will influence the conversion and production. The
change of production do affect the quality of goods. Therefore,
in order to have a steady production, we should use the
controller to control the state variable such as temperature,
pressure, liquid level, etc. In order to avoid the changes of
external disturbances, we used the MIMO global linearization
control system to design the controller. This kind of
controller can eliminate all the influences of external
disturbances and decoupling performances. In addition to, we
compared the performances of this controller with one of
traditional PI controller. We found that the global
linearization control had done an excellent performances from
imitative result.
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