Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893739
Yuan Cheng, Xuanhui Zhang, W. Xie, Dan Chen, Guohua Li
In this thesis, Ti-pillared montmorillonite was prepared by a sol-gel method. The sample was characterized by X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). The results show that the crystal phase of the sample is composed of anatase and montmorillonite. The microstructure of the sample is still layered structure, in which anatase particles lie in the interlayer space. Furthermore, the XRD results indicate that the interlayer distance of crystal plane (001) of the montmorillonite left-shift obviously. In other words, its interlayer distance increases obviously. The adsorptive ability of the sample was tested with industry wastewater, which containing Pb2+. The results indicate that the adsorptive rate of the sample for lead (II) cation is 100% almost. The Ti-pillared montmorillonite absorbed Pb2+ saturatedly was impregnated into 3 mol/L nitric acid solution for 2 h to dissolve the lead cation, then it was rinsed by deionized water for three times and dried at 120 °C overnight. The sample impregnated by nitric acid solution was used to treat Pb2+ containing industry wastewater again. The results show that its adsorptive rate can still reach above 95%.
{"title":"The adsorptive ability of Ti-pillared montmorillonite for lead (II) cation","authors":"Yuan Cheng, Xuanhui Zhang, W. Xie, Dan Chen, Guohua Li","doi":"10.1109/ICMREE.2013.6893739","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893739","url":null,"abstract":"In this thesis, Ti-pillared montmorillonite was prepared by a sol-gel method. The sample was characterized by X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). The results show that the crystal phase of the sample is composed of anatase and montmorillonite. The microstructure of the sample is still layered structure, in which anatase particles lie in the interlayer space. Furthermore, the XRD results indicate that the interlayer distance of crystal plane (001) of the montmorillonite left-shift obviously. In other words, its interlayer distance increases obviously. The adsorptive ability of the sample was tested with industry wastewater, which containing Pb2+. The results indicate that the adsorptive rate of the sample for lead (II) cation is 100% almost. The Ti-pillared montmorillonite absorbed Pb2+ saturatedly was impregnated into 3 mol/L nitric acid solution for 2 h to dissolve the lead cation, then it was rinsed by deionized water for three times and dried at 120 °C overnight. The sample impregnated by nitric acid solution was used to treat Pb2+ containing industry wastewater again. The results show that its adsorptive rate can still reach above 95%.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"79 1","pages":"577-580"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83863936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893780
P. Zhu, Zhenglun Shi, Leming Cheng, M. Fang
For comprehensive utilization of solid waste, coal gangue, slag of CFB and washed fly ash provided by a coal mine were evaluated on their potential as calcined kaolin. Studies on these samples include the determination of chemical composition by ICP, the analysis of mineralogical construction by XRD, orthogonal experiments of iron leaching by acids and decarburization by calcination. Results show that the chemical compositions of three samples are very close to the kaolinite and their mass ratios of SiO2 to Al2O3 are all about 1.4:1. The major crystalline phase presented in the coal gangue is kaolinite, while an obvious band of amorphous materials are found in others since they are combustion products, but none of them is in exception of layer structure observed though SEM. Orthogonal experiments of iron leaching by acids reveal that the maximal iron leaching rate and product-calcined whiteness of the coal gangue are 63.59% and 68.54% respectively. For that of the slag of CFB, they are 39.74% and 40.55%, while for that of the washed fly ash, they are 31.58% and 45.92%. Thus, it can be inferred that this coal gangue can better fulfill the preparation of high-quality calcined kaolin.
{"title":"Evaluation of coal gangue and ash for calcined kaolin preparation","authors":"P. Zhu, Zhenglun Shi, Leming Cheng, M. Fang","doi":"10.1109/ICMREE.2013.6893780","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893780","url":null,"abstract":"For comprehensive utilization of solid waste, coal gangue, slag of CFB and washed fly ash provided by a coal mine were evaluated on their potential as calcined kaolin. Studies on these samples include the determination of chemical composition by ICP, the analysis of mineralogical construction by XRD, orthogonal experiments of iron leaching by acids and decarburization by calcination. Results show that the chemical compositions of three samples are very close to the kaolinite and their mass ratios of SiO2 to Al2O3 are all about 1.4:1. The major crystalline phase presented in the coal gangue is kaolinite, while an obvious band of amorphous materials are found in others since they are combustion products, but none of them is in exception of layer structure observed though SEM. Orthogonal experiments of iron leaching by acids reveal that the maximal iron leaching rate and product-calcined whiteness of the coal gangue are 63.59% and 68.54% respectively. For that of the slag of CFB, they are 39.74% and 40.55%, while for that of the washed fly ash, they are 31.58% and 45.92%. Thus, it can be inferred that this coal gangue can better fulfill the preparation of high-quality calcined kaolin.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"7 1","pages":"730-734"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86904924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893725
Jian Liu, Songbo Li, G. Guo
Polyvinyl alcohol(PVA) modified by SiO2/poly 2-acrylamido 2-methylpropane sulfonic acid (PAMPS) electrolyte membrane SiO2/PVA-PAMPS was prepared by a Sol-gel synthesis in situ technique. Fourier transform infrared spectroscopy is used to characterize changes of the membrane's microstructures after grafting. The morphology of the membrane's microstructures are studied by scanning electrolytic microscope and X-ray diffraction. The results show that the conductivity of the SiO2 (30wt%)/PVA-PAMPS(20wt%) membrane was 4.12×10-2S/cm and AMPS is easily blended into polyvinyl alcohol (PVA) modified by namometer silicon dioxide.
{"title":"Structure and morphology of SiO2/PVA-PAMPS composite membrane","authors":"Jian Liu, Songbo Li, G. Guo","doi":"10.1109/ICMREE.2013.6893725","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893725","url":null,"abstract":"Polyvinyl alcohol(PVA) modified by SiO2/poly 2-acrylamido 2-methylpropane sulfonic acid (PAMPS) electrolyte membrane SiO2/PVA-PAMPS was prepared by a Sol-gel synthesis in situ technique. Fourier transform infrared spectroscopy is used to characterize changes of the membrane's microstructures after grafting. The morphology of the membrane's microstructures are studied by scanning electrolytic microscope and X-ray diffraction. The results show that the conductivity of the SiO2 (30wt%)/PVA-PAMPS(20wt%) membrane was 4.12×10-2S/cm and AMPS is easily blended into polyvinyl alcohol (PVA) modified by namometer silicon dioxide.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"47 1","pages":"521-523"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86906621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893727
Desheng Liu, Yun Chao, Shengnan Wu, Shuying Zhong, M. Lei
LiCoO2 thin film samples have been prepared by pulsed laser deposition under different deposition conditions. A series of tests have been done to investigate the relationship between the film quality and the deposition conditions. The results from XRD show that the LiCoO2 films deposited by PLD thermodynamically tend to form (003) preferred orientation. But the films grown at high repetition rate (35Hz) and low oxygen pressure (1Pa) show a random orientation. SEM and AFM images reveal that the size and uniformity of LiCoO2 crystalline grains is directly depends on the deposition temperature and repetition rate. Therefore, by adjusting the deposition parameters, to achieve the purpose of LiCoO2 thin film morphology control is feasible.
{"title":"Morphology control of LiCoO2 thin film prepared by pulsed laser deposition","authors":"Desheng Liu, Yun Chao, Shengnan Wu, Shuying Zhong, M. Lei","doi":"10.1109/ICMREE.2013.6893727","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893727","url":null,"abstract":"LiCoO2 thin film samples have been prepared by pulsed laser deposition under different deposition conditions. A series of tests have been done to investigate the relationship between the film quality and the deposition conditions. The results from XRD show that the LiCoO2 films deposited by PLD thermodynamically tend to form (003) preferred orientation. But the films grown at high repetition rate (35Hz) and low oxygen pressure (1Pa) show a random orientation. SEM and AFM images reveal that the size and uniformity of LiCoO2 crystalline grains is directly depends on the deposition temperature and repetition rate. Therefore, by adjusting the deposition parameters, to achieve the purpose of LiCoO2 thin film morphology control is feasible.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"84 1","pages":"529-531"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89026637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The adsorption characteristics and porous structure of self-made hydrophobic silica (HS) used in the recovery of oil vapor were investigated using the methods of N2 (g) adsorption measurement and SEM photograph, together with the pillared activated carbon (PAC). HS is a typical mesoporous material and has smaller surface area and bigger average pore diameter compared with the PAC. PAC has the well-developed interstitial structure, while HS's surface holes are shallow. The structural difference between the two adsorbents determined the different adsorption/desorption performance in recovery of oil vapor. PAC has the bigger adsorption amount and faster adsorption rate of oil vapor, while the oil vapor adsorbed in HS is much easier to be desorbed. The mixture of PAC and HS represented both the properties of fast adsorption rate and perfect desorption performance which can improve the life and efficiency of the recovery system at the same time. The adsorption amount of adsorbent increased with the increase of inlet concentration and decreased with the increase of inlet velocity of oil vapor.
{"title":"Application research of hydrophobic silica in the recovery of oil vapor","authors":"Hongxing Zhang, Longmei Tan, Jingfeng Wu, Zuzheng Shang","doi":"10.1109/ICMREE.2013.6893733","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893733","url":null,"abstract":"The adsorption characteristics and porous structure of self-made hydrophobic silica (HS) used in the recovery of oil vapor were investigated using the methods of N2 (g) adsorption measurement and SEM photograph, together with the pillared activated carbon (PAC). HS is a typical mesoporous material and has smaller surface area and bigger average pore diameter compared with the PAC. PAC has the well-developed interstitial structure, while HS's surface holes are shallow. The structural difference between the two adsorbents determined the different adsorption/desorption performance in recovery of oil vapor. PAC has the bigger adsorption amount and faster adsorption rate of oil vapor, while the oil vapor adsorbed in HS is much easier to be desorbed. The mixture of PAC and HS represented both the properties of fast adsorption rate and perfect desorption performance which can improve the life and efficiency of the recovery system at the same time. The adsorption amount of adsorbent increased with the increase of inlet concentration and decreased with the increase of inlet velocity of oil vapor.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"3 1","pages":"554-557"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87864956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893713
Donghui Zhang, C. Tang, Weiliang Kong, Ning Chen
Heat conduction process in fractal structure is analyzed through numerical computation method in this paper. Fractal structure can be simplified as a kind of binary mixture, composed of pore and matrix. If convection and radiation heat transfer are neglected, it is found that the effective thermal conductivity for random Sierpinski Carpet is approximately scaled as the structure length scale or matrix percent. The macro-pore distribution and fractal dimension have much effect to the effective thermal conductivity. That is to say, the structure heterogeneity plays an important role in heat transfer process for fractals. The research would be helpful to understand the micro-scale heat conduction mechanism well.
{"title":"The research about thermal conductivity for fractal porous material","authors":"Donghui Zhang, C. Tang, Weiliang Kong, Ning Chen","doi":"10.1109/ICMREE.2013.6893713","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893713","url":null,"abstract":"Heat conduction process in fractal structure is analyzed through numerical computation method in this paper. Fractal structure can be simplified as a kind of binary mixture, composed of pore and matrix. If convection and radiation heat transfer are neglected, it is found that the effective thermal conductivity for random Sierpinski Carpet is approximately scaled as the structure length scale or matrix percent. The macro-pore distribution and fractal dimension have much effect to the effective thermal conductivity. That is to say, the structure heterogeneity plays an important role in heat transfer process for fractals. The research would be helpful to understand the micro-scale heat conduction mechanism well.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"8 1","pages":"472-475"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87865435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893695
Li Li, Yimei Wang, Yongqian Liu
To meet the requirements of the wind power prediction of wind farms, the wind velocity at the wind turbines' hub height were predicted in this paper, taking an actual wind farm as the example. First, many steady CFD numerical calculations were conducted to simulate the air flow field above the wind farm. Standard k-εturbulence model was adopted in the calculation. Then, taking the mesoscale NWP parameters as input data, the wind velocities were predicted by the simulated flow fields during the period of the year 2010. Compared with the measured wind velocity, the yearly mean absolute error (MAE) of predicted wind velocity for each wind turbine is less than 2m/s, and as the MAE decreases, the number of wind velocity samples increases. It shows that wind velocity prediction by this CFD method is accurate. The research in this paper may provide support for the work of wind power forecasting.
{"title":"Wind velocity prediction at wind turbine hub height based on CFD model","authors":"Li Li, Yimei Wang, Yongqian Liu","doi":"10.1109/ICMREE.2013.6893695","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893695","url":null,"abstract":"To meet the requirements of the wind power prediction of wind farms, the wind velocity at the wind turbines' hub height were predicted in this paper, taking an actual wind farm as the example. First, many steady CFD numerical calculations were conducted to simulate the air flow field above the wind farm. Standard k-εturbulence model was adopted in the calculation. Then, taking the mesoscale NWP parameters as input data, the wind velocities were predicted by the simulated flow fields during the period of the year 2010. Compared with the measured wind velocity, the yearly mean absolute error (MAE) of predicted wind velocity for each wind turbine is less than 2m/s, and as the MAE decreases, the number of wind velocity samples increases. It shows that wind velocity prediction by this CFD method is accurate. The research in this paper may provide support for the work of wind power forecasting.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"1 1","pages":"411-414"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89744118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893644
W. Qiuxia, X. Rui, Liu Jianchang, Duan Huanyun, Y. Yage, Han Jiahong
Taking the fresh coffee husks as the raw material and the cultured active sludge as the inoculums to operate the measurement of biogas yield potential research, under mesophilic (35 °C) and ambient temperature conditions. In this paper, the biogas yield, cumulative biogas production and biogas production rate were analyzed. The biogas yield potential of coffee husks were 494 ml/g TS and 544 ml/g VS under mesophilic condition and 365 ml/g TS and 402 ml/g VS under ambient temperature condition respectively.
{"title":"One study on biogas production potential character of coffee husks","authors":"W. Qiuxia, X. Rui, Liu Jianchang, Duan Huanyun, Y. Yage, Han Jiahong","doi":"10.1109/ICMREE.2013.6893644","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893644","url":null,"abstract":"Taking the fresh coffee husks as the raw material and the cultured active sludge as the inoculums to operate the measurement of biogas yield potential research, under mesophilic (35 °C) and ambient temperature conditions. In this paper, the biogas yield, cumulative biogas production and biogas production rate were analyzed. The biogas yield potential of coffee husks were 494 ml/g TS and 544 ml/g VS under mesophilic condition and 365 ml/g TS and 402 ml/g VS under ambient temperature condition respectively.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"43 1","pages":"188-192"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82236596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893677
Shuguang Zhu, Jianfeng Shen, Xinzhi Liu, Houlei Zhang, Bin Li
Pyrolysis is known as one of the promising thermochemical conversion routes in producing solid (charcoal), liquid (tar) and gaseous products. In the present study, deposition coefficient, defined as the fraction of volatile and gases deposited on the char due to the secondary reaction, is introduced to modify the kinetics model in literatures. The effects of heating rates, heating temperatures and deposition coefficients on pyrolysis products distribution under non-isothermal and isothermal conditions are discussed. The investigation based on the modified model shows that the deposition coefficient affects the secondary reaction products distribution significantly. When the deposition coefficient increases, the generation rate and the concentration of char increase and the volatile and gases in secondary reaction decrease. The results indicate that primary reaction plays a dominant role in volatile and gases generation and secondary reaction plays a dominant role in char generation. The work in this paper provides useful information for optimal design of biomass gasifiers and reactors.
{"title":"The modified model for predicting the products distribution in pyrolysis of biomass","authors":"Shuguang Zhu, Jianfeng Shen, Xinzhi Liu, Houlei Zhang, Bin Li","doi":"10.1109/ICMREE.2013.6893677","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893677","url":null,"abstract":"Pyrolysis is known as one of the promising thermochemical conversion routes in producing solid (charcoal), liquid (tar) and gaseous products. In the present study, deposition coefficient, defined as the fraction of volatile and gases deposited on the char due to the secondary reaction, is introduced to modify the kinetics model in literatures. The effects of heating rates, heating temperatures and deposition coefficients on pyrolysis products distribution under non-isothermal and isothermal conditions are discussed. The investigation based on the modified model shows that the deposition coefficient affects the secondary reaction products distribution significantly. When the deposition coefficient increases, the generation rate and the concentration of char increase and the volatile and gases in secondary reaction decrease. The results indicate that primary reaction plays a dominant role in volatile and gases generation and secondary reaction plays a dominant role in char generation. The work in this paper provides useful information for optimal design of biomass gasifiers and reactors.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"48 1","pages":"331-334"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76500824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893803
Chunhua Wang, F. Jia, Hongna Wang, Zhi Zhang, Longbo Gao
Taking a carbon rotary kiln for example, numerical simulations were conducted on gas and solid spaces of the kiln using Fluent and Matlab softwares. Through changing temperature and oxygen mass concentration of primary air, temperature field distributions are obtained in different conditions. The results indicate that, if the low-temperature flue gas instead of the primary air is injected to the kiln at the kiln outlet, the temperature of the gas and solid particles in the cooling zone will be lower, but the length of the calcining zone will not be shortened notably. Therefore, suggestions were put forward, as the low temperature flue gas from the waste heat recovery device after rotary kiln or mixing the high-temperature gas from the kiln inlet, or the primary normal air mixing with the low-temperature gas is injected to the kiln at the kiln outlet, low oxygen atmosphere area can be formed. By the method, solid particles can be cooled, meantime, the solid particles burning loss can be reduced, which lead to the increment of the kiln actual yield.
{"title":"High-temperature and low-oxygen combustion technology for carbon rotary kilns","authors":"Chunhua Wang, F. Jia, Hongna Wang, Zhi Zhang, Longbo Gao","doi":"10.1109/ICMREE.2013.6893803","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893803","url":null,"abstract":"Taking a carbon rotary kiln for example, numerical simulations were conducted on gas and solid spaces of the kiln using Fluent and Matlab softwares. Through changing temperature and oxygen mass concentration of primary air, temperature field distributions are obtained in different conditions. The results indicate that, if the low-temperature flue gas instead of the primary air is injected to the kiln at the kiln outlet, the temperature of the gas and solid particles in the cooling zone will be lower, but the length of the calcining zone will not be shortened notably. Therefore, suggestions were put forward, as the low temperature flue gas from the waste heat recovery device after rotary kiln or mixing the high-temperature gas from the kiln inlet, or the primary normal air mixing with the low-temperature gas is injected to the kiln at the kiln outlet, low oxygen atmosphere area can be formed. By the method, solid particles can be cooled, meantime, the solid particles burning loss can be reduced, which lead to the increment of the kiln actual yield.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"14 1","pages":"839-842"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78957352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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