Thesis supervisor: Pál Szentannai
Location of studies (in Hungarian): BME Energetikai Gépek és Rendszerek Tanszék Abbreviation of location of studies: EGR
Description of the research topic:
a.) Antecedents: Fluidized beds offer several advantages over traditional energy generation methods from solid fuels, notably low NOX emission, in-process capture of SO2 and the ability to efficiently burn a wide range of low-grade, unequal quality, and potentially problematic fuels (including waste and biomass), as well as mixed fuels. Nowadays rapid growth can be observed in both unit sizes and number of installed units worldwide, which necessitates intensive research activities on technology developments, optimal fuel mix adaptations, and scale-up.
b.) Aim of research: To set up a system of experiments and calculations for evaluating solid fuels regarding their availabilities for fluidized bed conversion.
A well-known advantage of Fluidized Bed Conversion (FBC) is its flexibility against fuel composition and quality. However, not all fuels and fuel mixtures can be applied advantageously, and in many cases some adaptations are necessary. A generally applicable system of experimental and theoretical steps should be elaborated for proving the suitability of any solid fuels questioned by power plant operators.
c.) Tasks, main items, necessary time: Detailed literature study on (i) the FBC technology and development trends, (ii) fuel characterization technologies available in the lab and worldwide, (iii) potential solid fuels including biomass and waste derived fuels, (iiii) modeling of the phenomena in the FBC & scale-up – Setting up the experimental environment, considering especially the available and recently refurbished mid-scale FBC utility – Setting up the modeling environment, considering especially the available numerical tools – Elaborating, testing, and documenting the characterization system – Writing, discussing, and defending the thesis.
Time demand: 4 – 5 years.
d.) Required equipment: Well-equipped laboratory with mid-scale FBC facility (available, to be extended in a small amount, if necessary) See: http://fbc.energia.bme.hu
Modeling software packages (available, to be extended in a small amount, if necessary)
e.) Expected scientific results:
A novel and comprehensive system of fuel evaluation & new theoretical descriptions of part-processes taking place in the FBC. All this verified by experiments.
f.) References:
• Leckner B, Szentannai P, Winter F: Scale-up of fluidized-bed combustion -- A review FUEL 90:(10) pp. 2951-2964. (2011)
• Pal Szentannai, János Bozi, Emma Jakab, János Ősz, Tibor Szűcs: Towards the thermal utilisation of non-tyre rubbers – Macroscopic and chemical changes while approaching the process temperature. FUEL 156:(September) pp. 148-157. (2015)
• Szentannai: Modern Power Plant Control for Energy Conservation, Efficiency Increase, and Financial Benefit. In: Wei-Yin Chen, Toshio Suzuki, Maximilian Lackner (szerk.): Handbook of Climate Change Mitigation and Adaption. New York: Springer (New York), 2015. pp. 1-20. (ISBN:978-1-4614-6431-0)
Required language skills: angol Number of students who can be accepted: 1
Deadline for application: 2018-04-24
2024. IV. 17. ODT ülés Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).
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