Emission characteristics of co-combustion of a low calorie and high sulfur-lignite coal and woodchips in a circulating fluidized bed combustor: Part 1. Effect of excess air ratio

2014-01-01
Varol, Murat
Atımtay, Aysel
OLGUN, HAYATİ
Atakül, Hüsnü
In this study, co-combustion of Bursa-Orhaneli lignite and woodchips mixtures containing 10%, 30% and 50% by wt. of woodchips was studied in a circulating fluidized bed combustor in order to investigate the effect of excess air ratio (k) on the flue gas emissions. The combustor has an inside diameter of 108 mm and a height of 6 m. The temperature of the combustor is kept at 850 degrees C during the combustion tests. During the combustion tests, CO, O-2, NO, and SO2 emissions in the flue gas was continuously measured and recorded by ABB-AO 2000 flue gas analyzer.

Suggestions

Emission characteristics of co-combustion of a low calorie and high-sulfur-lignite coal and woodchips in a circulating fluidized bed combustor: Part 2. Effect of secondary air and its location
VAROL, MURAT; Atımtay, Aysel; OLGUN, HAYATİ (2014-08-15)
In this study, co-combustion of woodchips and Bursa-Orhaneli lignite was carried out in a circulating fluidized bed combustor, 6 m long and 108 mm inside diameter. Co-combustion of lignite and woodchips was performed in order to investigate the effect of secondary air ratio (SAR) on the flue gas emissions. The woodchips content of the fuel mixture was 30% and 50% by wt. Secondary air (SA) was supplied to the combustor from five different locations along the combustor and at several SARs. During the combusti...
Oxidation Behavior of Light Crude Oil and Its SARA Fractions Characterized by TG and DSC Techniques: Differences and Connections
Yuan, Chengdong; Varfolomeev, Mikhail A.; Emelianov, Dmitrii A.; Eskin, Aleksey A.; Nagrimanov, Ruslan N.; Kök, Mustafa Verşan; Afanasiev, Igor S.; Fedorchenko, Gennadii D.; Kopylova, Elena V. (American Chemical Society (ACS), 2018-01-01)
This research is intended to reveal the difference and connection of oxidation behavior between crude oil and its SARA fractions. Thermogravimetry (TG) and differential scanning calorimetry (DSC) techniques were used to characterize oxidation behavior. The results showed that the oxidation behavior of individual SARA components exhibited an obvious difference. Saturates showed a weak high-temperature oxidation (HTO) region. Asphaltenes generated more heat in HTO than in the low-temperature oxidation (LTO) r...
Synthesis and characterization of Ba/MCM-41
Kaya, Emine; Oktar, Nuray; Karakaş, Gürkan; Murtezaoglu, Kirali (2010-01-01)
Mesoporous Ba/MCM-41 type materials (Ba/MCM-41) with high Ba/Si molar ratios between 0.025 and 0.1 were synthesized by direct hydrothermal synthesis. The samples were characterized by XRD, nitrogen adsorption, TGA-DTA, FTIR, SEM-EDS, and TEM techniques. BET surface areas of samples with various Ba loadings were found between 722 and 931 m(2)/g with 28 A average pore size, which is consistent with the pore size of 30 A for pure MCM-41 samples synthesized by the same procedure. The crystal structures of synth...
Study of Sorption of Alcohols on High Silica ZSM-35
Babuçcuoğlu, Yurdaer; Yücel, Hayrettin; Department of Chemical Engineering (2007)
This study investigated the equilibrium sorption capacities and rates of sorption of some alcohols on Na- and/or H- form of ZSM-35 at different temperatures by gravimetric method using an electrobalance. The alcohols studied were methanol, ethanol, propan-1-ol, propan-2-ol, n-butanol. The ZSM-35 sample used in sorption experiments resulted from a study for synthesis of high silica ZSM-35 zeolite. This ZSM-35 sample was called as NaZSM-35. The influence of ion-exchange on the sorption capacity and kinetics w...
Oxidation state related evaluation of tellurium determination by flame AAS
Yildiz, Huseyin Bekir; ERTAŞ, Nusret; Ataman, Osman Yavuz (2008-01-01)
In this study, when Te (IV) and Te (VI) solutions were prepared by deionized water, unexpected differences in the flame AAS sensitivity for Te were found, depending on the oxidation state. Te (IV) gave a significantly greater absorbance than the same concentration of Te (VI) in the air-acetylene flame. However, when these solutions were prepared in 1.0 % (v/v) HNO(3), they had equal sensitivity for flame AAS. This behavior allows one to determine total Te without any error.
Citation Formats
M. Varol, A. Atımtay, H. OLGUN, and H. Atakül, “Emission characteristics of co-combustion of a low calorie and high sulfur-lignite coal and woodchips in a circulating fluidized bed combustor: Part 1. Effect of excess air ratio,” FUEL, pp. 792–800, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30789.