(3.236.228.250) 您好!臺灣時間:2021/04/20 00:03
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

我願授權國圖
: 
twitterline
研究生:陳科豪
論文名稱:以流體化床濾除煙道氣中粒狀物之研究
指導教授:魏銘彥
學位類別:碩士
校院名稱:國立中興大學
系所名稱:環境工程學系
學門:工程學門
學類:環境工程學類
論文種類:學術論文
論文出版年:2003
畢業學年度:91
語文別:中文
論文頁數:123
中文關鍵詞:流體化床過濾飛灰電廠灰焚化場灰
相關次數:
  • 被引用被引用:8
  • 點閱點閱:199
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:48
  • 收藏至我的研究室書目清單書目收藏:0
本研究主要以流體化床過濾器控制煙道氣中之粒狀物,探討不同流體化操作條件下對粒狀物包括電廠灰和焚化場灰之影響,並找出以流體化床濾除煙道氣中粒狀物的主要控制機制和最佳操作條件。在本實驗中的操作參數包括:操作流量(400、500、600 L/min)、石英砂床質(600.5、770.5、920.0 μm)、流體化床床溫(36、100、200、300℃)、靜置床高(21、26 cm)和不同進料物種(電廠灰和焚化場灰)。
結果顯示,電廠灰的去除效率會隨著操作流量的逐漸提高而有先增加而後減少的趨勢,並且於冷模和熱模過濾實驗中發現,流體化床除塵機制主要是以慣性衝擊機制為主要。電廠灰的去除效率會隨著床中床質粒徑的減小而有較佳的去除效率且會隨著靜置床高的增加而有提高的趨勢。在高溫下操作的流體化床對於電廠灰的去除效率大致上會比在低溫下操作的流體化床有較佳的去除效率,另外,在高溫下有助於擴散機制收集細小飛灰,但若流量操作太高時則會降低流體化床對細小飛灰的濾除,而流體化床主要的收集機制仍是以慣性衝擊機制為主。另外,焚化場灰去除效率會隨操作流量的提高而有降低的趨勢,在實驗中發現,當操作氣速在1.8 Umf以上時,則流體化床對於焚化場灰已無去除效率,而改變床中床質的粒徑對於焚化場灰的去除效率影響不大。
摘 要 I
ABSTRACT II
目 錄 III
圖 目 錄 VI
表 目 錄 IX
符 號 說 明 XI
第一章 前言 1
1-1 研究緣起與目的 1
1-2 研究架構與內容 2
第二章 文獻回顧 4
2-1 常見除塵設備的原理及效率 4
2-2 粒狀物去除機制 7
2-3 流體化床濾除粉塵之應用 14
2-3-1 流體化床的特性 14
2-3-2 淘失的定義 18
2-3-2-1 操作氣速 19
2-3-2-2 溫度 20
2-3-2-3 粒子的黏滯力 20
2-3-2-4 床質的平均粒徑 22
2-3-2-5 反應器的幾何因子 22
2-3-2-6 粒子的密度 23
2-3-2-7 操作時間 23
2-3-3 磨損的定義 30
2-3-3-1 操作氣速 31
2-3-3-2 床質的平均粒徑 31
2-4 文獻總結 33
第三章 實驗設備及方法 36
3-1 實驗設備 36
3-1-1 流體化床過濾器 36
3-1-2 煙道氣中粒狀物之採樣設備 38
3-1-3 分析儀器與器材 39
3-2 進料組成 40
3-3 實驗試程 43
3-4 實驗流程 46
3-4-1 實驗前準備及步驟 46
3-4-2 採樣分析與飛灰去除效率的計算 49
3-4-2-1 採樣與分析 49
3-4-2-2 飛灰去除效率的計算 50
3-4-2-3 以理論控制機制計算飛灰的去除效率 52
第四章 結果與討論 56
4-1 流體化床操作流量對電廠灰去除效率之影響 56
4-2 流體化床床質粒徑對電廠灰去除率之影響 68
4-3 流體化床床溫對電廠灰去除率之影響 73
4-4 流體化床靜置床高對電廠灰去除率之影響 78
4-5 流體化床對焚化場灰去除率之影響 83
4-6 流體化床濾除電廠灰之吸附飽和貫穿實驗 89
4-7 流體化床出口處飛灰粒徑分佈的改變 93
4-8 以理論機制計算的總去除效率與實際去除效率的比較 97
第五章 結論與建議 103
5-1 結論 103
5-2 建議 104
參考文獻 105
Baeyens, J., Geldart, D. and Wu, S. Y., “Elutriation of Fines from Gas-Fluidized Beds of Geldart A-Type Powders ─ Effect of Adding Superfines”, Powder Technology, Vol. 71, No. 1, pp. 71-80, 1992.
Baron, T., Briens, C. L., Hazlett, J. D., Bergougnou, M. A. and Galtier, P., “Size Distribution of the Particles Entrained from Fluidized-Beds ─ Gas Humidity Effects”, Canadian Journal of Chemical Engineering, Vol. 70, No. 4, pp. 631-635, 1992.
Beizaie, M., “Deposition of Particles on a Single Collector”, Ph.D. Dissertation, Syracuse University, Syracuse, NY, 1977
Bülau, H. C. and Hallström, A., “Carry-Over from Shallow Fluidized Beds”, Powder Technology, Vol. 97, pp. 45-50, 1998.
Choi, J. H., Choi, K. B., Kim, P., Shun, D. W. and Kim, S. D., “The Effect of Temperature on Particle Entrainment Rate in a Gas Fluidized Bed”, Powder Technology, Vol. 92, pp. 127-133, 1997.
Choi, J. H., Son, J. E. and Kim, S. D., “Solid Entrainment in Fluidized-Bed Combustors”, J. Chem. Eng. Jpn., Vol. 22, No. 6, pp. 597-606, 1989.
Choi, J. H., Suh, J. M., Chang, I. Y., Shun, D. W., Yi, C. K., Son, J. E. and Kim S. D., “The Effect of Fine Particles on Elutriation of Coarse Particles in a Gas Fluidized Bed”, Powder Technology, Vol. 121, pp. 190-194, 2001.
Clift, R. and Grace, J. R., Fluidization, Academic Press, London, pp. 73-125, 1985.
Cooper, C. D. and Alley, F. C., “Air Pollution Control”, Central Book Publishing Company, 1996.
Delebarre, A., Bitaud, B. and Regnier, M. C., “Gas-solid suspensions flowing through a granular bed”, Powder Technology, Vol. 91, pp. 229-236, 1997.
Fayed, M. E. and Otten, L., “Handbook Of Powder Science & Technology”, Chapman & Hall, New York, 1997.
Geldart, D. and Wong, A. C. Y., “Entrainment of Particles from Fluidized Beds of Fine Powders”, AIChE Symp. Ser., Vol. 83, No. 255, pp. 1-9, 1987.
Geldart, D., “Gas Fluidization Technology”, John Wiley and Sons, 1986.
Geldart, D., “The Effect of Particle Size and Size Distribution on the Behaviour of Gas-Fluidised Beds”, Powder Technology, Vol. 6, pp. 201-215, 1972.
George, S. E. and Grace, J. R., “Entrainment of Particles from a Pilot Scale Fluidized Bed”, Can. J. Chem. Eng., Vol. 59, pp. 279-284, 1981.
Hesketh, H. E., “Air Pollution Control”, Technomic Publishing Company, Inc., 1991.
Hinds, W. C., “Aerosol Technology”, John Wiely & Sons. Inc., New York, 1999.
Kato, K., Takarada, T., Matsuo, N., Suto, T. and Nakagawa, N., “Residence-time distribution of fine particles in a powder-particle fluidized bed”, Int. Chem. Eng., Vol. 34, No. 4, pp. 605-610, 1994.
Kirsh, A. A. and Stechkina, I. B., “The Theory of Aerosol Filtration with Fibrous Filters”, in Fundamentals of Aerosol Science, D. T. Shaw (Ed.), Wiley, New York, 1978.
Li, J. and Kato, K., “A Correlation of the Elutriation Rate Constant for Adhesion Particles (Group C Particles)”, Powder Technology, Vol. 118, pp. 209-218, 2001.
Lin, L., Sesrs, J. T. and Wen, C. Y., “Elutriation and Attrition of Char a Large Fluidized Bed”, Powder Technology, Vol. 27, pp. 105-115, 1980.
Llop, M. F., Casal, J. and Arnaldos, J., “Expansion of Gas-Solid Fluidized Beds at Pressure and High Temperature”, Powder Technology, Vol. 107, pp. 212-225, 2000.
Marban, G., Pis, J. J. and Fuertes, A. B., “Characterizing Fuels for Atmospheric Fluidized Bed Combustion”, Combustion and Flame, Vol. 103, pp. 41-58, 1995.
Ma, X. and Kato, K., “Effect of Interparticle Adhesion Forces on Elutriation of Fine Powders from a Fluidized Bed of a Binary Particle Mixture”, Powder Technology, Vol. 95, pp. 93-101, 1998.
Merrick, D. and Highley J., “Particle Size Rekuction and Elutriation in a Fluidized Bed Process”, AIChE Symp. Ser., Vol.70, No.137, pp. 366, 1974
Nakagawa, N., Arita, S., Uchida, H., Takamura, N., Takarada, T. and Kato, K., “Particle Hold-Up and Elutriation Rate in the Freeboard of Fluid Beds”, J. Chem. Eng. Jpn., Vol. 27, No. 1, pp. 79-84, 1994.
Pemberton, S. T. and Davidson, J. F., “Elutriation from Fluidized-Beds. 2. Disengagement of Particles from Gas in the Freeboard”, Chem. Eng. Sci., Vol. 41, No. 2, pp. 253-262, 1986.
Rasul, M. G., Rudolph, V. and Wang, F. Y., “Particles separation using fluidization techniques”, International Journal of Mineral Processing, Vol. 60, pp. 163-179, 2000.
Rasul, M. G., Rudolph, V. and Carsky, M., “Segregation potential in binary gas fluized beds”, Powder Technology, Vol. 103, pp. 175-181, 1999.
Ray, Y. C. and Jiang, T. S., “Particle Attrition Phenomena in a fluidized Bed”, Powder Technology, Vol. 49, pp. 193-206, 1987.
Rodrĺguez, J. M., Sánchez, J. R., Alvaro, A., Florea, D. F. and Estévez, A. M., “Fluidization and Elutriation of Iron Oxide Particles. A Study of Attrition and Agglomeration Processes in Fluidized Beds”, Powder Technology, Vol. 111, pp. 218-230, 2000.
Santana, D., Rodríguez, J. M. and Macías-Machín, A., “Modelling Fluidized Bed Elutriation of Fine Particles”, Powder Technology, Vol. 106, pp.110-118, 1999.
Spurny, K. R., “Advances In Aerosol Filtration”, Lewis Publishers,New York, 1998
Scala, F., Commarota, A., Chirone, R. and Salatino, P., “Comminution of Limestone During Batch Fluidized-Bed Calcination and Sulfation”, AIChE J., Vol. 43, No. 2, pp. 363-373, 1997.
Schmidt, E. W. et al., “Filtration of Aeaosols in a Granular Bed”, J. APCA. Vol. 28, No. 143, 1978.
Sciazko, M., Bandrowski, J. and Raczek, J., “On the Entrainment of Solid Particles from a Fluidized-Bed”, Powder Technology, Vol. 66, No. 1, pp. 33-39, 1991.
Smolders, K. and Baeyens, J., “Elutriation of Fines from Gas Fluidized Beds: Mechanisms of Elutriation and Effect of Freeboard Geometry”, Powder Technology, Vol. 92, pp. 35-46, 1997.
Stein, M., Seville, J.P.K. and Parker, D. J., “Attrition of Porous Glass Particles in a Fluidized Bed”, Powder Technology, Vol. 100, pp. 242-250, 1998.
Tien, C., “Granular Filtration Of Aerosols and Hydrosols”, Butterworths, London, 1989.
Tasirin, S. M. and Geldart, D., “Entrainment of FCC from Fluidized Beds  A New Correlation for the Elutriation Rate Constants ”, Powder Technology, Vol. 95, pp. 240-247, 1998.
Vaux, W. G. and Keairns, D. L., in “Fluidization”, Grace Matsen, New York ,1980
Wu, S. Y., Baeyens, J. and Chu, C. Y., “Effect of the Grid-Velocity on Attrition in Gas Fluidized Beds”,The Canadian Journal of Chemical Engineering, Vol. 77, pp. 738-744, 1999.
Wu, S. Y. and Baeyens, J., “Segregation by Size Difference in Gas Fluidized Beds”, Powder Technology, Vol. 98, pp. 139-150, 1998.
Wu, S. Y., Juang, C. J., Yang, T. Y. and Chih, Y. W., “Attrition of Different Materials in Fluidized Beds”, Symposium on Transport Phenomena and Application, pp. 197-200, 2000.
林文勇,“流化床中床質磨損與混沌分析”,逢甲大學碩士論文,2002。
章裕民、洪朝陽、李昌憲,“Study on Elutriation from Bubbling Fluidized Bed Incineration — A Correlation for Elutriaiton Rate Constant”,第十六屆廢棄物處理技術研討會,2-13,2001。
楊東昱,“流體化床中不同床質之磨損現象”,逢甲大學碩士論文,2000。
蔣博欽,“以流體化床控制焚化廢氣中污染物之研究”,中興大學博士論文,2002。
錢建嵩,“流體化床技術”,高立圖書有限公司,1992。
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
無相關期刊
 
系統版面圖檔 系統版面圖檔