Chinese Journal of Chemical Engineering, Vol.24, No.9, 1213-1228, 2016
Control of reactive dividing wall column for selective hydrogenation and separation of C3 stream
In our previouswork, the reactive dividing wall column (RDWC) was proposed and proved to be effective for selective hydrogenation and separation of C3 stream. In the present paper, the dynamics and control of the proposed RDWC are investigated. Four control structures including composition and temperature controls are proposed. The feed forward controllers are employed in the four control strategies to shorten the dynamic response time, reduce the maximum deviations and offer an immediate adjustment. The control structures are compared by applying them into the RDWC system with 20% disturbances in both the feed flow rate and the feed compositions, and the results are discussed. (C) 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.