The ash fusion characteristics of bamboo and coal co-firing process were determined by a thermogravimetric analyzer, X-ray fluorescence and X-ray diffraction. The results showed that the ash of bamboo and coal co-firing process had similar chemical compositions with coal ash. Ash components occurred to synergistic interaction during co-firing process of bamboo and coal. Bamboo increased ash fusion temperatures of blends. The ash fusion process included moisture evaporation, oxidation of organic matters, removal and reaction of inorganic matters. The transformation of chemical compositions resulted in mass loss of ash. Fusion mechanism included G–B model, Mampel power model, second-order reaction and the Avrami–Erofeev model. The optimum blend ratio of bamboo and coal was suggested as 30%:70%. The results will be helpful to provide a scientific guidance to use bamboo residues for energy products.
Abstract Ash fusion characteristics of bamboo, masson pine and coal were investigated using X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). XRF results showed that the major components of bamboo ash were K2O, SiO2 and SO3. Masson pine ash mainly included Fe2O3 and CaO. Coal ash was comprised of SiO2, Al2O3, CaO, Fe2O3 and SO3. The variation of major components resulted in different fusion characteristics, such as t...
Abstract The co-combustion of sewage sludge and woody biomass is a key issue in coal power plants. Different combustion and ash behaviors of sewage sludge and woody biomass cause unpredictable operating concerns. In this study, the combustion and ash agglomeration behavior of blended fuel of sewage sludge and woody biomass (BSW) were investigated while coal co-combusted with it. Thermogravimetric analysis (TGA) revealed that adding a high amount of BSW into the coal lowered volatilization, ignit...
#3Wei Yang(HUST: Huazhong University of Science and Technology)H-Index: 7
In this work, the bamboo ash fusion and sintering characteristics were studied to evaluate its potential application in combustion for the production of heat and power. Poplar and wheat straw were used in the experimental test as the reference fuels for comparison. Standard ash fusion tests and ash sintering tests were carried out at elevated temperatures. The results indicate that bamboo has a low ash melting temperature of 862 °C, much lower than that of poplar. In spite of the high K content ...
#1Qing'an Xiong(CAS: Chinese Academy of Sciences)H-Index: 3
#2Jiazhou Li(CAS: Chinese Academy of Sciences)H-Index: 8
Last. Yitian Fang(CAS: Chinese Academy of Sciences)H-Index: 25
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Abstract In this study, the effect of biomass ash on petroleum coke ash fusibility was investigated at a reducing atmosphere. Some analytical methods, such as ash fusion temperatures (AFTs) analysis, X-ray diffraction (XRD), FactSage and scanning electron microscopy (SEM), were applied to determine the characteristics of ash fusion and transformation of mineral matters. The results indicated that AFTs were closely associated with ash mineral compositions. It was found that the formations of high...
#1John F. Hunt(USFS: United States Forest Service)H-Index: 12
#2Weiqi Leng(USFS: United States Forest Service)H-Index: 4
Last. Mehdi Tajvidi(UMaine: University of Maine)H-Index: 26
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In this study, the effects of cellulose nanofibrils (CNFs) ratio, press program, particle size, and density on the vertical density profile (VDP) and internal bond (IB) strength of the wet-formed particleboard were investigated. Results revealed that the VDP was significantly influenced by the press program. Pressing using a constant pressure (CP) press program produced panels with flat-shaped profile. Panels made from a constant thickness (CT) press program produced U-shaped profile. The CNF ra...
The blended ash fusibility characteristics and its variation mechanism of biomass (peanut hull (PH), bean straw (BS), and corn cob (CC)) and Changzhi coal (CZ) with high silica–alumina were investigated using an ash fusion temperature (AFT) detector, thermogravimetric differential scanning calorimetry (TG-DSC), X-ray diffraction (XRD), and FactSage software. The results showed that the AFT of CZ mixed ash decreased with the addition of PH ash, and the AFT of CZ mixed ash decreased rapidly (0–30%...
To investigate if there is synergistic interaction between bamboo with coal, or between torrefied bamboo with coal during cocombustion, bamboo and torrefied bamboo separately were respectively uniformly mixed with coal and the weight percentage of bamboo or torrefied bamboo in the mixture were 10%, 20%, 30%, and 40%. The combustion behaviors of blends were characterized using thermogravimentric analyzer at heating rates of 10°C/min, 20°C/min, 30°C/min, and 40°C/min. Results showed that the combu...
Abstract The paper is focused on the characterization of renewable fuel ashes and their impact on fouling and slagging during combustion. Biomass (A1) and sewage sludge (A2, A3) ashes were investigated for characterization of their corrosive properties. The chemical and phasemineral composition of ashes were studied using a variety of analytical techniques including XRF, ICP-MS, XRD, SEM–EDS, and the ash fusion characteristics by using a thermal microscope. The slagging and fouling indices, as w...
Bamboo and masson pine was torrefied with 300°C of temperature for 2.0h of residence time using GSL 1600X tube furnace in the argon atmosphere. Torrefied bamboo and masson pine particles were uniform mixed with different weight ratios. Pyrolysis and combustion characteristics were investigated through thermogravimetry (TGA). The results showed that pyrolysis and combustion process of all samples included three steps even though their characteristics were different. Torrefied biomass had a higher...
To investigate co-combustion behavior of bamboo/coal blends, thermogravimetric analysis (TGA) was used to determine combustion characteristics of bamboo, torrefied bamboo, coal and their respective blends with five mixing ratios and three air flows. The results indicated that torrefaction was an effective way to improve physical properties of bamboo materials. The combustion process of bamboo and torrefied bamboo included drying, oxidative pyrolysis and char combustion. Torrefied bamboo had a lo...
Thermal characteristics and kinetic parameters of ash from bamboo and masson pine blends with different mixing ratios were investigated using a thermogravimetric analyzer at different heating rates. The results showed that bamboo ash had lower fusion temperatures than the ash of masson pine. Mixing ratios and heating rates had a significant impact on the thermal characteristics and activation energy of ash samples. There was a synergistic interaction of chemical compositions in the bamboo and ma...
