Journal of Fundamentals of Renewable Energy and Applications
Open Access
ISSN: 2090-4541
+44 1300 500008
ISSN: 2090-4541
+44 1300 500008
Mehmet Unsal1, Haydar Livatyali2, Parvana Aksoy1, Serhat Gul1 and Alper Onoglu3
Scientific Tracks Abstracts: J Fundam Renewable Energy Appl
The CatLiq® process is a catalytic hydrothermal liquefaction process that takes place at water supercritical conditions in the
range of 230-250 bar and 350-420°C and the obtained biocrude oil is called as “Altaca oil”. “Altaca Oil” is synthesized from
aqueous bio-waste such as lignocelluloses, proteins, fats and carbohydrates and their mixtures. In the development phase of the
CatLiq® process, after a pilot scale studies, a demonstration plant was scaled up. The upgraded version of the lab pilot plant is
currently operational in Gebze-Kocaeli, Turkey, and a series of tests have been conducted to optimize conversion conditions of
bio-gasification and sewage sludge. Using delivered data via these tests, the pre-commercial demonstration plant was designed
and, the plant is under construction at the Gönen, Balikesir/Turkey. During designing studies, for thermodynamic calculation
and process simulation Aspen HYSYS 8.4, and Chemcad 6.1, for heat exchanger designs Aspen HTFS, for piping Bentley, for the
stress analysis and materials choise PV Elite, and for fluid dynamic and heat transfer Fluent were used. General requirements
were observed for ASME Section 3 Div.2 in the pre-commercial demonstration plant design. The demonstration plant mass flow
feeding rate is 15 ton/h, while the mass flow feeding rate of pilot plant is 60 kg/h. It is limited for continuous process due to the
fact that the pilot plant has some fluid behaviors as fouling, plug, particle flow. It has been forecast that these limitation will be
solved at the scale up. The demonstration plant is an energy integrated system with heat recovery of 70%. Each waste heat stream
at the plant was investigated in terms of its waste heat quantity (the approximate energy in the waste heat stream), quality (typical
exhaust temperatures). Energy content of waste heat streams was considered as a function of mass flow rate, composition, and
temperature, and was evaluated based on process energy consumption, typical temperatures, and mass balances. Ultimately,
waste heat of any equipment was used for reaction energy of other equipment. Moreover, the plant was scaled up based on Best
Available Technology. The plant is based on transforming the waste into a useful material and minimalizing waste production of
the process.
Mehmet Unsal graduated from Chemical Engineering in 1999 from Firat University, Turkey and then completed his PhD on Process Development and Optimization
in Biodiesel Production at Gebze Technical University. He joined TUBITAK MRC eleven years ago. He is still working at the Energy Institute at TUBITAK MRC as
a Principal Researcher under the “Gasification and Combustion of Biomass and Coal” research group. His research is mainly based on process development,
process optimization, equipment design, biogasification, and upgrading of biocrude oil production and upgrading, biodiesel production, combustion and gasification
of coals and biomass, waste heat recovery.