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Seehar, Tahir Hussain

Seehar, Tahir Hussain

PROJECT TITLE: Life Cycle and Techno-Economic Analysis for HTL (Hydrothermal Liquefaction) Process Scenarios

PhD period: 2018.03.15 – 2021.03.14.
Section: Fluid Mechanics and Combustion
Research Programme: Biomass
Supervisor: Lasse Rosendahl
Co-Supervisor: Saqib Sohail Toor
Contact Information

Collaborator: Dawood University of Engineering and Technology, Pakistan. 
Funding: Higher Education Commision HEC Pakistan through Dawood University FDP program.


Life cycle assessment (LCA) is basically chain of different steps related with the life of any product which can considered as cradle to grave analysis. It  plays a vital role to examine the energy potential, process feasibility, process cost, environmental and economic concerns of biomass at every stage from cultivation to end product which results to judge that either the subjected biomass is fit for large scale production of  biofuel or not. Additionally, Techno-economic analysis (TEA) is an essential tool for research and marketable projects, which comprises of evaluation of engineering design and modeling to appraise the economic viability of a process. Hydrothermal Liquefaction (HTL) is one of the advanced and efficient thermochemical process to convert the wet biomass into biofuels. Different products can be obtained by the HTL process like biochar, biocrude and also gas phase. Different types of feedstock like lignocellulosic, manures, macro and microalgae can be used to convert into bio fuels efficiently. Since HTL technology has not been used at a large scale bio fuel production, detailed techno-economic analysis (TEAs) are required to make it suitable for commercial development. An important reason for delay is lack of detailed and consistent technical information like lack of complete process, mass and energy balances to support a systematic analysis and evaluation. To keep in mind the highlighted issues, the detailed life cycle and techno economic analysis play the vital role to rectify the economic concerns highlighted in previous studies through the analysis of different parameters like land use, cost benefit analysis, process efficiency etc. Aspen Plus Software can also be used for the design and operation of safe manufacturing facilities. It is widely used in the engineering field like chemical, polymer industries for the designing of efficient process. With the help of Aspen Plus process modeling analysis can be conducted through which design for energy use and operating cost can be examined. By using Aspen Plus we can predict the behavior of a process using basic engineering relationships such as mass and energy balances, chemical equilibrium. To keep in mind the solution of current energy and environmental problems the hydrothermal liquefaction process now is in the upgrade state from lab-pilot scale to pilot industrial scale, which results the addition in the value and importance of HTL process. The launching of HTL units at large scale may results the high grade products to overcome the energy demands.


Publications in journals and conference papers may be found at VBN.