Fuel Characteristics Research and Regression Analysis for Blend Fuel of Biomass and Coal

2011 ◽  
Vol 71-78 ◽  
pp. 2006-2009
Author(s):  
Zhi Wei Wang ◽  
Ting Zhou Lei ◽  
Feng Yue ◽  
Xiao Feng He ◽  
Jin Ling Zhu
Keyword(s):  
Regression Analysis ◽  
Sulfur Content ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Regression Equations ◽  
Corn Stalk ◽  
Fixed Carbon ◽  
Heat Value ◽  
Blend Fuel ◽  
Blend Ratios

Blend fuel of corn stalk and coal was made in a series of blend ratios with corn stalk mass percent ranging from 10 to 90%. Several data were gotten by proximate analysis with considering indexes of volatile matter, fixed carbon, sulfur content, heat value and ash. The regression equations of the data were gotten through regression analysis for the relationship between blend ratios of corn stalk(BRCS) and proximate analysis data(PAD)．The result showed that there was linear relation between PAD of the blend fuel and BRCS, and linear equation slope absolute value of volatile matter, fixed carbon, sulfur content, heat value and ash were 8.49,7.64,5.45,4.85,3.97, respectively. Volatile matter content increased with the increase of BRCS, and other PAD was opposites. Variation rate and variation tendency of the blend fuel PAD was gotten through proximate analysis and fitted equation, and some references may be provided for utilization of blend fuel of biomass and coal.

scholarly journals Analysis mixed characterization of Kalimantan coal and mangrove wood charcoal character as briquette raw material

2021 ◽  
Vol 921 (1) ◽  
pp. 012055
Author(s):  
R Rahman ◽  
B Azikin ◽  
D Tahir ◽  
S Widodo
Keyword(s):  
Moisture Content ◽  
Sulfur Content ◽  
Calorific Value ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Ash Content ◽  
Wood Charcoal ◽  
Fixed Carbon ◽  
Ultimate Analysis ◽  
Mangrove Wood

Abstract This study using three types of coal from East Kalimantan and South Sulawesi Mangrove Wood Charcoal which consisted of various compositions. In sample analysis using analysis, namely: proximate, ultimate, and calorific value. Proximate analysis: ash content, volatile matter, moisture content, fixed carbon; ultimate analysis: carbon and sulfur content and the calorific value using the bomb calorimeter method. The results of the proximate analysis showed that the fixed carbon content was obtained in the mixture of MWC 75% + KJA 25% = 52.45%, while the lowest was obtained at IC 100% = 32.86%; The highest volatile matter was obtained at KJA 100% = 44.23%, the lowest was at MWC 75% + KJA 25% = 31.90%, the highest ash content was IC 100% = 9.14% the lowest was at MWC 75% + KJA 25% = 5.94% and the highest moisture content was seen at IC 100% = 15.17% but MWC 75% + IC 25% = 9.52%. The results of the ultimate analysis showed that the lowest sulfur content was in the mixed variation of MWC 75% + KJA 25% = 0.168%, while the highest sulfur content was obtained at IC 100% = 0.874%. However, it was still in the low sulfur category <1. The highest calorific value is obtained by varying the composition at MWC 75% + IC 25% = 5919 cal/gram, while the lowest was obtained at KJA 100% = 4913 cal/gram. So based on this research, the addition of mangrove charcoal is very good for increasing the calorific value.

Analyses of Coal and Sewage Sludge Co-Combustion Using Coats-Redfern Model

2012 ◽  
Vol 518-523 ◽  
pp. 3271-3274
Author(s):  
Huan Li ◽  
Yang Yang Li ◽  
Yi Ying Jin
Keyword(s):  
Activation Energy ◽  
Ignition Temperature ◽  
Burning Velocity ◽  
Fire Behavior ◽  
Volatile Matter ◽  
Water Evaporation ◽  
Fixed Carbon ◽  
Carbon Combustion ◽  
Blend Fuel ◽  
Dried Sludge

The co-combustibility of coal and sludge was investigated with thermogravimetric analysis. The results show that the burning process of sludge can be divided into three phases: water evaporation, volatile matter volatilization and combustion, fixed carbon combustion and burning out. The ignition temperature of sludge is only 260 degree centigrade at the beginning of volatile matter combustion. The addition of wet sludge or dried sludge will reduce the burning velocity of coal, and also decrease the ignition temperature. However the blend of coal and sludge has not an obvious stage of the volatile matter volatilization and combustion. The activation energy of the sludge is lower than that of the coal. The addition of wet sludge or dried sludge will decrease the activation energy of the blend fuel, and improve the fire behavior. On the whole, the sludge addition has little influence on the combustion of the coal when the addition ratio is lower than 10%.

scholarly journals Physiochemical Properties of Cotton Stalk Biomass from Aricultural Residues

2015 ◽  
Vol 10 (1) ◽  
pp. 343-349 ◽  
Author(s):  
Dobariya Umesh ◽  
P Sarsavadiya ◽  
Krishna Vaja ◽  
Khardiwar Mahadeo
Keyword(s):  
Calorific Value ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Agricultural Residues ◽  
Ash Content ◽  
Cotton Stalk ◽  
Fixed Carbon ◽  
Physiochemical Properties ◽  
Feed Stock ◽  
Energy Conversion Process

The study was undertaken to investigate the properties of cotton stalk fuel from the agricultural residues. The whole cotton stalk plant is converted into shredded material with the help of cotton stalk shredder. The capacity of cotton stalk shredder machine is 218 kg/h. The proximate analysis of the shredded cotton stalk in terms of bulk density 34.92 kg / m3 moisture content 13.63 %, volatile matter 74.52 %, ash content (4.95 %, fixed carbon 20.53 % and calorific value of cotton stalk biomass (3827 cal/g) respectively. were showed that agricultural residues are the most potential and their quantitative availability, Since the aim by using shredded cotton stalk as feed stock for energy conversion process of the developed gasifier.

scholarly journals Preliminary Study of Microwave Irradiation Towards Oil Palm Empty Fruit Bunches Biomass

2021 ◽  
Vol 4 (2) ◽  
pp. 133-137
Author(s):  
Muhammad Iqbal Ahmad ◽  
Mohd Sukhairi Mat Rasat ◽  
Shahril Nizam Mohamed Soid ◽  
Mazlan Mohamed ◽  
Zairi Ismael Rizman ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Oil Palm ◽  
Power Input ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Fixed Carbon ◽  
Empty Fruit Bunches ◽  
Preliminary Study ◽  
Oxidative Atmosphere

In this study, torrefaction via microwave irradiation was introduced towards oil palm empty fruit bunches (EFB) samples. The samples of 10 g was fed into the quartz type crucible inside the microwave with the power input limit to 385 W. Continous nitrogen up to 50 ml/min were induced and promoted the non oxidative atmosphere in the closed crucible. This proved the increased of energy properties as high 23.6 MJ/kg for torrefied samples comparable to raw 14.8 MJ/kg. On the result of proximate analysis, fixed carbon shows the increase trends whereby the volatile matter decreased. Torrefaction has been found to improve the energy properties of oil palm EFB biomass as a fuel.

scholarly journals CHARACTERIZATION OF COAL SEAMS IN THE ARANTIGA AND SELUANG MINE BENGKULU USING PROXIMATE ANALYSIS DATA

2020 ◽  
Vol 6 (3) ◽  
pp. 197-204
Author(s):  
Rafi Maulana ◽  
Ordas Dewanto ◽  
A Raka Abriyansyah
Keyword(s):  
Bituminous Coal ◽  
Analysis Data ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Total Sulfur ◽  
Coal Seams ◽  
Fixed Carbon ◽  
Caloric Value ◽  
Average Value ◽  
Coal Type

Indonesia as a country that has ample large coal reserves spread across the Sumatera and Kalimantan islands. The huge potential in the region needs further research to be able to find out the quality and excellence of coal resources in order to know the characteristics in detail, then the research was carried out in the Bengkulu Province area by testing coal sample based on Proximate analysis to obtain accurate coal quality results and analysis of coal characteristics in the area can be carried out. The results show that the coal seams in the Arantiga mine have an average value Inherent Moisture is worth 7.49 %, ASH is worth 9.82 %, Volatile Matter is worth 40.99 %, Fixed Carbon is worth 41.70 %, Total Sulfur is worth 0.34 %, Gross Caloric Value is worth 6305 kcal/kg and including of High Volatile A Bituminous coal type, while the Seluang mine has an average value Inherent Moisture is worth 2.07 %, ASH is worth 22.92 %, Volatile Matter is worth 20.26 %, Fixed Carbon is worth 54.78 %, Total Sulfur is worth 0.55 %, Gross Caloric Value is worth 6365 kcal/kg dan and including of Medium Volatile Bituminous coal type.

scholarly journals The Investigation of Mercury Contents in Polish Coal Samples

2013 ◽  
Vol 39 (2) ◽  
pp. 141-150 ◽  
Author(s):  
Michał Wichliński ◽  
Rafał Kobyłecki ◽  
Zbigniew Bis
Keyword(s):  
Electricity Generation ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Mercury Content ◽  
Hard Coal ◽  
Fixed Carbon ◽  
Heating Value ◽  
High Heating Value ◽  
Enrichment Process

Abstract This paper presents the results of the investigation associated with the determination of mercury content in Polish hard coal and lignite samples. Those coals are major fuels used for electricity generation in Poland. The results indicated that the average content of mercury in the coal samples was roughly about 100 ng/g. Apart from the determination of the mercury contents a detailed ultimate and proximate analysis of the coal samples was also carried out. The relationships between the mercury content and ash, as well as fixed carbon, volatile matter, sulfur, and high heating value of the coal samples were also established. Furthermore, the effect of coal enrichment was also investigated, and it was found that the enrichment process enabled the removal of up to 75% of the coal mercury from the samples.

Compositional and experimental investigation of the effect of reactor temperature on softwood and hardwood pyrolysis

2018 ◽  
Vol 15 (1) ◽  
pp. 21-26
Author(s):  
Joseph Adewumi Oyebanji ◽  
Sunday Olayinka Oyedepo
Keyword(s):  
Design Methodology ◽  
Pyrolysis Temperature ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Initial Weight ◽  
Fixed Carbon ◽  
Heating Value ◽  
Content Type ◽  
Reactor Temperature ◽  
Temperature Levels

Purpose This study aims to investigate the effect of reactor temperature on softwood and hardwood pyrolysis. Experiments are performed at six temperature levels ranging from 300 to 800°C under N2 atmosphere. The weights of char, tar and gas yields produced were measured and recorded in percentage of initial weight of the pyrolyzed samples. Results of the study showed that hardwood produces maximum char, tar and gas yields of 41.02 per cent at 300°C,44.10 per cent at 300°C and 56.86 per cent at 800°C, respectively, whereas softwood produces maximum yields of 30.10 per cent at 300°C, 28.25 per cent at 300°C and 68.73 per cent at 800°C, respectively. Proximate analysis shows that volatile matter, fixed carbon, ash content and moisture content of hardwood are 74.83, 14.28, 2.81 and 8.08 per cent, respectively, and that of softwood are 79.76, 12.65, 0.98 and 6.61 per cent, respectively. Result of the elemental analysis results shows that the carbon, hydrogen, nitrogen, oxygen and sulphur contents for hardwood are 52.20, 6.45, 0.68, 39.64 and 1.03 per cent, respectively, and that of softwood are 45.95, 4.57, 0.56, 48.13 and 0.79 per cent, respectively. The higher heating value of hardwood and softwood are 21.76 and 16.50 kJ/g respectively. This study shows that char and tar yields decrease with increase pyrolysis temperature, whereas gas yield increases as pyrolysis temperature increases for the wood samples considered. At all temperatures considered in this study, gas yields are higher than tar and char yields for softwood, whereas for hardwood, tar yield decreases with increase in temperature with accompanying increase in gas yield. Design/methodology/approach Experiments are performed at six temperature levels ranging from 300 to 800°C under N2 atmosphere. Findings At all temperatures considered in this study, gas yields are higher than tar and char yields for softwood, whereas for hardwood, tar yield decreases with increase in temperature with accompanying increase in gas yield. Originality/value Results of the study showed that hardwood produces maximum char, tar and gas yields of 41.02 per cent at 300°C,44.10 per cent at 300°C and 56.86 per cent at 800°C, respectively, whereas softwood produces maximum yields of 30.10 per cent at 300°C, 28.25 per cent at 300°C and 68.73 per cent at 800°C, respectively.

Co-Combustion Characteristics of Oil Shale Semi-Coke and Corn Stalk

2012 ◽  
Vol 614-615 ◽  
pp. 107-110
Author(s):  
Hong Peng Liu ◽  
Xu Dong Wang ◽  
Chun Xia Jia ◽  
Wei Zhen Zhao ◽  
Qing Wang
Keyword(s):  
Weibull Distribution ◽  
Oil Shale ◽  
Combustion Process ◽  
Combustion Characteristics ◽  
Avrami Equation ◽  
Corn Stalk ◽  
Fixed Carbon ◽  
Thermogravimetric Analyzer ◽  
Blend Ratios

The combustion experiments of oil shale semi-coke and corn stalk mixtures were conducted using thermogravimetric analyzer. The results show that the advance ignition and burnout can be achieved when semi-coke is mixed with corn stalk. The influence of different blend ratios has been studied, and the combustion characteristics were obtained. Comprehensive combustion characteristics get improved with the increase of corn stalk proportion in the mixture. The interaction of mixture in the combustion process occurs mainly in 400-600oC. It can be explained that the combustion of fixed carbon in corn stalk is delayed. What is more, TG curves were simulated by Johnson-Mehl-Avrami equation. The result shows the feasibility of using Weibull distribution to simulate the TG curves of co-combustion.

Experimental Research of the Fast Pyrolysis Characteristics for Lignite at Medium Temperature

2014 ◽  
Vol 521 ◽  
pp. 654-657
Author(s):  
Kai Wang ◽  
Jian Guo Jiang ◽  
Rong Feng Sun
Keyword(s):  
Fast Pyrolysis ◽  
Pyrolysis Product ◽  
Proximate Analysis ◽  
Fixed Carbon ◽  
Medium Temperature ◽  
Pyrolysis Characteristics ◽  
Heat Value ◽  
On Line ◽  
Higher Temperature ◽  
Gas Component

The lignite fast pyrolysis characteristics at medium temperature was tested ranging from 400°C to 700°C, and the pyrolysis product component was on-line analyzed by using gas chromatograph-mass spectrometer computer and fourier transform infrared spectroscopy. Besides, two different algorithms were used to evaluate the test error. The results show that the maximum experimental error is no more than 6.2%. In addition, the optimum pyrolysis temperature is about 550°C which causes the maximum tar yield with an obvious increases of heat value. The gas component concentration shows divergences because of the tar decomposition at higher temperature. Finally, the proximate analysis of char was tested, which shows that the ash and fixed carbon of char increase with the temperature addition.

Relationship between Heating Value and Proximate Analysis of Oil Shale

2012 ◽  
Vol 614-615 ◽  
pp. 69-72
Author(s):  
Qing Wang ◽  
Na Pei
Keyword(s):  
Oil Shale ◽  
Mining Area ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Fixed Carbon ◽  
Heating Value ◽  
Lower Heating Value ◽  
Value Measurement ◽  
Important Significance ◽  
Lower Heating

In this research, experimental samples were from Maoming, Huadian, Wangqing, Fushun and Longkou regions in different layers and different mining area. The experimental results of oil shale proximate analysis and heating value measurement show that there are certain relations between proximate analysis of moisture, ash, fixed carbon, volatile matter and lower heating value. The relations between oil shale lower heating value and proximate analysis have important significance to estimate the average characteristics of oil shale as received and oil shale combustion conditions in boiler.

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