Thesis topic proposal
Péter Láng
Reduction of the energy demand and optimisation of distillation processes and configurations


Institute: Budapest University of Technology and Economics
mechanical engineering
Géza Pattantyús-Ábrahám Doctoral School of Mechanical Engineering

Thesis supervisor: Péter Láng
Location of studies (in Hungarian): Department of Building Service and Process Engineering
Abbreviation of location of studies: EPGET

Description of the research topic:

a.) Antecedents:
- PhD theses under French-Hungarian joint supervision (1998 (INSA Lyon), 2012 and 2013 (INP Toulouse)), Hungarian PhD theses (2005, 2009).
- Industrial applications (Sanofi-Chinoin, Gedeon Richter, Servier-Egis, Palota Environ-mental Ltd.).
- Research projects funded by the Hungarian Scientific Research Funds (OTKA): 6 pro-jects between 1995 and 2013, one ongoing (K-120083, 2016-2019).
b.) Aim of the research:
The aim of the research is to study and optimize complex distillation configurations by rigorous modelling. These configurations include facilities for reducing the energy consumption of distillation columns, such as the heat-integrated distillation column (HIDiC), dividing wall column (DWC). Additionally, the separation of azeotropic or low relative volatility mixtures using extractive distillation is also studied. The extractive distillation process requires at least two interconnected distillation columns, and significant energy savings can be reached by optimizing the process. Extractive distillation can also be realized in novel configuration, such as the DWC, and also in batch. During the research work, the PhD student performs feasibility analyses and calculations by flow-sheet simulator and develops programs for the optimization.
c.) Tasks, main items, necessary time:
• Study of the previously collected literature (4 months)
• Review of new literature (3 months)
• Getting acquainted with the available programs (3 months)
• Algorithm development and calculations for dividing wall-column (12 months)
• Algorithm development and calculations for special batch distillation processes (6 months)
• Calculations for extractive distillation (7 months)
• Calculations for heat-integrated distillation column (7 months)
• Writing of the thesis (6 months)
d.) Necessary equipment:
Professional flow-sheet simulators (ChemCAD, Aspen Plus available) and in-house soft-ware (partially available, partially to be developed or improved).
Laboratory distillation column (available).
e.) Expected scientific results:
• Development of new methods and new applications of existing ones.
• Publications in prestigious international journals.
• Further industrial applications, new technologies.
f.) Literature:
G. Modla, P. Lang.: Decrease of the energy demand of distillation with vapour recompres-sion, Proceedings of the 5th International Scientific Conference on Advances in Mechanical Engineering (ISCAME 2017), Debrecen, Hungary, 2017.10.12-2017.10.13. pp. 339-344
L. Hegely, P. Lang: Optimization of a batch extractive distillation process with recycling off-cuts, Journal of Cleaner Production, 2016, 136, 99-110.
G. Modla, P. Lang.: Vapor Compression for Batch Distillation: Comparison of Different Working Fluids, Industrial & Engineering Chemistry Research, 2015, 54:(3) pp. 1081-1092.
G. Modla, P. Lang.: Heat pump systems with mechanical compression for batch distillation, Energy, 2013, 62: pp. 403-417.
G. Modla, P. Lang.: Removal and Recovery of Organic Solvents from Aqueous Waste Mixtures by Extractive and Pressure Swing Distillation, Industrial & Engineering Chemistry Research, 2012, 51:(35) pp. 11473-11481.

Required language skills: angol
Number of students who can be accepted: 1

Deadline for application: 2021-03-23

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