Systematic integrated process design and control of reactive distillation processes involving multi-elements

作者：Mansouri Seyed Soheil; Sales Cruz Mauricio; Huusom Jakob Kjobsted; Gani Rafiqul^*

来源：Chemical Engineering Research and Design, 2016, 115: 348-364.

DOI：10.1016/j.cherd.2016.07.010

• Reactive distillation
• Process design
• Process control
• Driving force
• Computer-aided framework
• Multi-element systems

In this work, integrated process design and control of reactive distillation processes that involve multiple elements (more than two) is addressed through a computer-aided hierarchical decomposition-based framework. Multiple elements are encountered for reactive systems when four or more compounds (including inert compounds) are encountered. The reactive distillation design methods and tools which are similar in concept to design of binary non-reactive distillations and binary reactive distillations are used for design of multi element reactive distillation processes, such as driving force approach. The methods that are used in this work are based on equivalent binary element concept. This concept provides the representation of a multi-element system in terms of two key elements, light key and heavy key elements. First, the reactive distillation column is designed using the equivalent binary element driving force approach. Next, through analytical, steady-state and closed loop dynamic analysis it is verified that the control structure, disturbance rejection and energy requirement of the reactive distillation column is better than any other operation point that is not at the maximum driving force. Furthermore, it is shown that the design at the maximum driving force can be both controlled using simple controllers such as PI as well as advanced controllers such as MPC.

• 出版日期2016-11