Infrared measurement of biomass combustion in a wire mesh reactor

Download

index.pdf

Date

2019

Author

Uluca, Kıvanç

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

325
views

150
downloads

As a consequence of increasing emissions due to the global energy production, new clean combustion options which utilize biomass are being sought. Prior to using biomass in an industrial boiler, the combustion characteristics of the fuel have to be assessed so that the boiler and furnace can be designed or retrofitted. In this study, olive residue (OR), endogenous agricultural residue of Turkey was investigated using a wire mesh reactor (WMR) coupled with two infrared cameras. These cameras recorded radiometric data in mid-wave, 3-5μm, and long-wave, 8-12μm, infrared band. Infrared thermal imaging was used for the first time to observe the combustion of single fuel particles in a WMR. 2D thermal scanning of the WMR that operates at 1100°C was performed to verify homogenous temperature distribution along the mesh and it was observed that the mesh operates within ~40°C of average deviation. Single particle combustion experiments with OR particles with mass ranging 5-15mg were conducted to obtain ignition delay time, volatile and char combustion durations from the thermal radiation originated from combustion. Tunçbilek (TL) lignite samples (3mg) were selected for comparison purposes. The observations showed that in order to obtain similar burnout durations, a TL particle with ~3mg and a heavier OR particle ~11mg should be combusted. OR particles were observed to combust in two phases: volatile combustion followed by char combustion. The ignition delay time of OR did not have a direct relation with the particle mass since the process was initiated with gas-phase reactions. Oppositely, the particle mass influenced the volatile, char, and total combustion durations. Volatile, char combustion and burnout times were longer with increasing particle mass. An OR particle with an average mass of 10mg, burned out in 21s where 2s of volatile and 19s of char combustion. In addition, ignition delay time and char ignition time of the particle was measured as 9s and 11s respectively.

Subject Keywords

Biomass, Biomass Combustion., Infrared, Combustion, Biomass, Wire Mesh, Single Particle.

URI

http://etd.lib.metu.edu.tr/upload/12623853/index.pdf
https://hdl.handle.net/11511/44679

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Emissions of NOx and SO2 from Coals of Various Ranks, Bagasse, and Coal-Bagasse Blends Burning in O-2/N-2 and O-2/CO2 Environments Kazanç Özerinç, Feyza; Crnkovic, Paula Manoel; Levendis, Yiannis A. (2011-07-01) Oxy-coal combustion is a viable technology, for new and existing coal-fired power plants, as it facilitates carbon capture and, thereby, can mitigate climate change. Pulverized coals of various ranks, biomass, and their blends were burned to assess the evolution of combustion effluent gases, such as NOx, SO2, and CO, under a variety of background gas compositions. The fuels were burned in an electrically heated laboratory drop-tube furnace in O-2/N-2 and O-2/CO2 environments with oxygen mole fractions of 20...
Film fabrication using corncob as lignocellulosic biomass Ergün, Eylül Gökçe; Çulfaz Emecen, Pınar Zeynep; Bölükbaşı, Ufuk; Department of Chemical Engineering (2014) Renewable biopolymer resource, lignocellulosic biomass, has emerged as an alternative raw material to petroleum-based resources for the sustainable production of materials, fuels and chemicals. In this study, the main focus was to constitute a novel and eco-friendly process to fabricate films from low value lignocellulosic agricultural residues in the absence of any additional film-forming compounds. In this scope, raw lignocellulosic biomass, namely corn cobs, was turned into films using the ionic liquid 1...
Investigation of Turkish lignites and biomass at high heating rates by using wire mesh apparatus Baghirzade, Mammadbaghir; Kazanç Özerinç, Feyza; Department of Micro and Nanotechnology (2018) Coal continues to play a significant role in energy production over the world. However, its limited procurement and enormous side effects on global warming, make governments and organizations turn towards renewable energy resources like biomass which is CO2 neutral. Prior to utilization of fuels in power plants, it is important to investigate fuel behavior at high temperatures and high heating rates, i.e., close to heating rates in industrial applications. This understanding enables engineers to design appr...
Bio-fuel production from microalgae Onay, Melih; Yücel, A Meral; Öktem, Hüseyin Avni; Department of Biochemistry (2015) Bio-fuel is a renewable fuel and it includes different biofuel energy sources such as methane, bioethanol and biodiesel. Generally, biodiesel is produced from agricultural waste, vegetable oils such as soybean and palm oil. Third generation biofuels called as microalgae have been appeared nowadays. In the current study, biodiesel production from thermo-resistant green microalgae was focused on. For this aim, microalgae were sampled from a few hotspring points in Haymana and isolated. Identification and char...
Improvement in dye sensitized solar cells from past to present Mohiuddin, Obaidullah; Obaidullah, Madina; Sabah, Cumali (Springer Science and Business Media LLC, 2018-10-01) Several emerging renewable technologies are available to satisfy the current energy demand and to minimize the effect of environmental degradation caused by high consumption of fossil fuels. These technologies are not mature enough to solve this problem but require more time for improving the efficiency, and cost reduction to become the economical alternative of fossil fuels. In this paper Dye-sensitized solar cell (DSSC) has been discussed in detail owing to advancement in the technology. Since each compon...

Citation Formats

K. Uluca, “Infrared measurement of biomass combustion in a wire mesh reactor,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Mechanical Engineering., Middle East Technical University, 2019.