Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
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
Date
2011-07-01
Author
Kazanç Özerinç, Feyza
Crnkovic, Paula Manoel
Levendis, Yiannis A.
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
324
views
0
downloads
Cite This
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%, 40%, 60%, 80%, and 100%, at a furnace temperature of 1400 K. The fuel mass flow rate was kept constant in most cases, and combustion was fuel-lean. Results showed that in the case of four coals studied, NOx emissions in O-2/CO2 environments were lower than those in O-2/N-2 environments by amounts that ranged from 19 to 43% at the same oxygen concentration. In the case of bagasse and coal/bagasse blends, the corresponding NOx reductions ranged from 22 to 39%. NOx emissions were found to increase with increasing oxygen mole fraction until similar to 50% O-2 was reached; thereafter, they monotonically decreased with increasing oxygen concentration. NOx emissions from the various fuels burned did not clearly reflect their nitrogen content (0.2-1.4%), except when large content differences were present. SO2 emissions from all fuels remained largely unaffected by the replacement of the N-2 diluent gas with CO2, whereas they typically increased with increasing sulfur content of the fuels (0.07-1.4%) and decreased with increasing calcium content of the fuels (0.28-2.7%). Under the conditions of this work, 20-50% of the fuel-nitrogen was converted to NOx. The amount of fuel-sulfur converted to SO2 varied widely, depending on the fuel and, in the case of the bituminous coal, also depending on the O-2 mole fraction. Blending the sub-bituminous coal with bagasse reduced its SO2 yields, whereas blending the bituminous coal with bagasse reduced both its SO2 and NOx yields. CO emissions were generally very low in all cases. The emission trends were interpreted on the basis of separate combustion observations.
Subject Keywords
Oxy-fuel combustion
,
Pulverized coal
,
Carbon-dioxide
,
Reduction
,
Biomass
,
Char
,
Co2
,
Nitrogen
,
Conversion
,
Mixtures
URI
https://hdl.handle.net/11511/37845
Journal
ENERGY & FUELS
DOI
https://doi.org/10.1021/ef200413u
Collections
Department of Mechanical Engineering, Article
Suggestions
OpenMETU
Core
Mathematical modeling of FBC'a co-fired with lignite and biomass
Moralı, Ekrem Mehmet; Selçuk, Nevin; Department of Chemical Engineering (2007)
Increasing environmental legislations on pollutant emissions originated from fossil fuel combustion and intention of increasing the life of existing fossil fuels give rise to the use of renewable sources. Biomass at this juncture, with its renewable nature and lower pollutant emission levels becomes an attractive energy resource. However, only seasonal availability of biomass and operation problems caused by high alkaline content of biomass ash restrict its combustion alone. These problems can be overcome b...
Infrared measurement of biomass combustion in a wire mesh reactor
Uluca, Kıvanç; Kazanç Özerinç, Feyza; Department of Mechanical Engineering (2019)
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 radiome...
Emission sources and full spectrum of health impacts of black carbon associated polycyclic aromatic hydrocarbons (PAHs) in urban environment: A review
Ali, Muhammad Ubaid; Siyi, Lin; Yousaf, Balal; Abbas, Qumber; Hameed, Rashida; Zheng, Chunmiao; Kuang, Xingxing; Wong, Ming Hung (Informa UK Limited, 2020-03-19)
With increased urbanization and industrialization, the global burden of anthropogenic emissions through biomass and fossil fuel combustion has increased significantly, threatening the global climate system, air quality and human health. Half of the aerosol particles emitted as a result of combustion are in the form of black carbon (BC), co-emitted with polycyclic aromatic hydrocarbons (PAHs). Due to strong sorption efficiency, BC act as a carrier for highly toxic and carcinogenic PAHs in air, water and soil...
Assessment of the role of nuclear power on energy policies and climate change mitigation strategies of developing countries
Güngör, Görkem.; Sarı, Ramazan; Department of Earth System Science (2020)
Nuclear energy is considered as one of the climate change mitigation options in the energy supply sector by substituting electricity generated from base load fossil fueled power plants reducing GHG emissions. Internalizing the costs of CO2 emissions provides an additional economic incentive for investment in nuclear energy both in developed and developing countries. While developed countries with stable energy demand are focused on the robustness and resilience of their energy systems, the priority of devel...
GIS-based site selection methodology for hybrid renewable energy systems: A case study from western Turkey
Aydin, Nazli Yonca; Kentel Erdoğan, Elçin; Duzgun, H. Sebnem (Elsevier BV, 2013-06-01)
Renewable energy sources are presently being considered as alternatives to fossil fuels, because they are perpetual, environmentally friendly, and release negligible amounts of greenhouse gases to the atmosphere while producing energy. A disadvantage of renewable energy systems, however, is that continuous energy generation is not possible by using only one type of renewable energy system, since renewable energy resources depend on climate and weather conditions. Two or more renewable energy systems can be ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
F. Kazanç Özerinç, P. M. Crnkovic, and Y. A. Levendis, “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,”
ENERGY & FUELS
, pp. 2850–2861, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37845.