Design of a fully thermally coupled distillation column for hexane process using a semi-rigorous model
An industrial scale hexane process is designed for the implementation of a fully thermally coupled distillation column (FTCDC). A semi-rigorous material balance and Peng-Robinson equilibrium relation are utilized in the structural design. The operational design is conducted with a commercial design program, the HYSYS. The design outcome of the structural design indicates it to be comparable with the practical system of a conventional two-column arrangement in field operation, which shows the effectiveness of the design procedure implemented here. The procedure is good for the system of many components found from actual field applications. In addition, an investigation of the energy requirement of the FTCDC and a conventional system shows that an energy saving of 34.1% is available with the FTCDC.
Key wordsThermally Coupled Distillation Hexane Process Structural Design Petlyuk Column Design Semi-Rigorous
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- Triantafyllou, C. and Smith, R., “The Design and Optimisation of Fully Thermally Coupled Distillation Columns,”Trans. IchemE,70, Part A, 118 (1992).Google Scholar