Control structure in the synthesis of MTBE by RD

A detailed description of this system is available in appendix B. The spatial structure of the RDC is similar to that reported by Hauan et al. (1995a) and Jacobs and Krishna (1993) and detailed in the upper section of table 6.2. Two sinusoidal disturbances (figure 6.6) are included in the problem description. They account for both the variation in the feed composition of the C4-stream and the change in the inlet temperature of the cold utility during the process operation. As suggested by Georgiadis et al. (2002)  

Bansal et al. (2000), the feed composition disturbance is modelled as a fast moving function and represented by the following general expression, 

The composition disturbance frequency mimic an upstream time response of 1 hour, which is commonly occurring in industrial practice. 

The temperature disturbance tries to represent the variation of inlet temperature of the 

In this case, the temperature disturbance has a time response of 4 hours. 

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Figure 6.5. Control structure in the synthesis of MTBE by RD. Remark the manipulated and controlled variables for each control loop are listed in table 6.3.

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