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研究生:劉家銓
研究生(外文):Chia-Chuan Liu
論文名稱:氣體進出口型式對於流動式顆粒床過濾器性能之影響分析
論文名稱(外文):The Analysis of The Performance of The Moving Granular Bed Filter That The Gases Come In And Out The MGBF In Different Positions
指導教授:郭景宗郭景宗引用關係
指導教授(外文):Jing-Tzong Kuo
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:機械工程學研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2001
畢業學年度:89
語文別:中文
論文頁數:101
中文關鍵詞:流動式顆粒床過濾器氣體進出口型式煙氣淨化顆粒體壓降過濾效率串式衝擊器粒徑分析
外文關鍵詞:moving granular bed filterflue gas clean-upflow patternpressure dropcollection efficiencycascade impactorparticle size distributiongranules
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流動式顆粒床過濾器(Moving Granular Bed Filter)是現今廣泛利用於高溫高壓氣體廢氣淨化設備。煙氣通過流動式顆粒床過濾器所造成的壓降以及流動式顆粒床過濾器內部煙氣流場與顆粒體流場更是此過濾系統之研發重點。
不同位置之進氣口和出氣口均會影響煙氣進入、排出流動式顆粒床過濾器內部流場與各個葉片進口和各個葉片出口之流量分佈以及整體流動式顆粒床之壓降。不佳之設計將會造成不均勻之各葉片進口和各葉片出口流量分佈,導致廢氣粉塵不斷附著阻塞於顆粒床各葉片進口處之靜止區,使顆粒體流動受到阻塞,大幅增加葉片靜止區之面積與壓降,而降低整體流動式顆粒床過濾器之過濾效率。
為了瞭解氣體進出口型式對於流動式顆粒床過濾器之複雜流場情形,本文目的主要在於建立一套實驗室規模之整合型流動式顆粒床過濾器,配合不同之氣體進出口型式,吹入粉塵並以串式衝擊器(cascade impactor)採樣,探討氣體進出口型式對於流動式顆粒床過濾器之壓降、進出口管道流場、顆粒床過濾器內部流場以及過濾性能分析。
The Moving Granular Bed Filter (MGBF) is a gas-cleaning facility, which have been used widely nowadays for flue gases cleanup and separation fine dust at relatively high temperature and high pressure (HTHP). These flue gases may come from furnaces and incineration process such as Integrated Gasification Combined Cycle (IGCC) or Pressurized Fluidized Bed Combustion (PFBC). The Moving Granular Bed Filter system is one of the most important contemporary-developed technologies. The understanding of the flow patterns and velocity profiles of both the granules and the flue gases in a filter bed is quite important. Also the pressure drop between the inlet and the outlet of the granular bed filter is the key point.
An improper design and different positions where the flue gases in and out the granular bed filter will influence the flow patterns, velocity profiles, pressure drop and the flow rate distributions around each louver inlet and outlet of the granular bed filter. Both the area of the quasi-stagnant zone and the pressure drop increase as the granules continuously collect the dust particles. The overall collection efficiency of the moving granular bed filter decreases eventually.
This paper discuss how the positions where the flue gases in and out the granular bed filter affect the inlet and outlet gas velocities, flow rate distribution around the louvers, pressure drop and the collection efficiency of the moving granular bed filter.
中文摘要…………………………………………………………..…………………Ⅰ
英文摘要…………………………………………………………..…………………Ⅱ
目錄………………………………………………………………..…………………Ⅲ
表目錄………………………………………………………………...…………...…Ⅴ
圖目錄………………………………………………………………………..………Ⅵ
附錄目錄……………………………………………………………………………..Ⅷ
第一章緒論………………………………………….…………………….…..……1
1-1前言…………………………………………………………………………..…1
1-2文獻回顧……………………………………..…………………………………6
1-3研究目的…………………………………………..……………………………7
第二章理論與實驗方法……………………………………………………………9
2-1理論分析…………………………………………………………..……………9
2-1-1顆粒床壓降分析………………………………………………...…………9
2-1-2衝擊器效率分析………………………………………………….………10
2-2實驗設備……………………………………………..…………………..……14
2-3實驗原理與方法………………………………………………………………15
2-3-1螺旋供料機的設計原理…………………………………….……………15
2-3-2流動式顆粒床過濾器的設計………………………………….…………16
2-3-3串式衝擊器的設計原理……………….…………………………………17
2-3-4煙道排氣中粒狀污染物採樣及其濃度之測定方法………………….…18
2-4實驗步驟………………………………………………………………………19
2-4-1臨界風速的量測(未出入粉塵)………………………………………….19
2-4-2氣體進出口型式對於顆粒床過濾器之流場量測(未出入粉塵)…….…19
2-4-3螺旋供料器之粉塵進料頻率量測(不需吹入粉塵)…………...………..20
2-4-4流動式顆粒床過濾器之性能分析……………………………………….20
第三章結果與討論……………..…………………………………………………21
3-1實驗操作時風速、風量的選擇………………………………..………………21
3-2氣體進出口型式對於流動式顆粒床過濾器之流場分析……………………23
3-2-1壓降分析…………………………………………………….……………24
3-2-2進出口管道中流速、流量分析……………………..………….…………25
3-2-3流動式顆粒床的8個進口和8個出口的流量分配.…….…………….…28
3-3進口管道中粉塵濃度分析……………………………………………………32
3-4流動式顆粒床過濾器之性能分析……………………………………………33
3-4-1壓降分析……………………………………………….…………………33
3-4-2串式衝擊器所採樣粉塵之重量分析………………………….…………35
3-4-3串式衝擊器所採樣粉塵之粒徑分析……………………….……………38
3-4-5流動式顆粒床過濾效率分析……………………………….……………42
3-4-6實驗觀察…………………………………………………….……………43
第四章結論與建議………………………………..………………………………45
第五章參考文獻……………………………………………..……………………46
附圖………………………………………………..…………………………………50
附錄………………………………………………..…………………………………93
表目錄
表2-1塵粒粒徑與Cc值的關係表(T=20℃)………………………...………………12
表2-2氣體進出口型式編號表……………………………………………………....16
表2-3串式衝擊器模擬人類之呼吸系統……………………………………………17
表2-4串式衝擊器之噴氣層規格……………………………………………………18
表3-1顆粒床臨界風速與實驗所採用頻率風速進口管道流場特性………………21
表3-2氣體進出口型式對於流動式顆粒體床之壓降………………………………24
表3-3氣體進出口型式對於流動式顆粒體床之進口流速、流量…………………..25
表3-4氣體進出口型式對於流動式顆粒體床之出口流速、流量………..…………25
表3-5氣體進出口型式對於流動式顆粒體床之進出口流量損失…………………26
表3-6上進上出對於流動式顆粒體床8個進口和8個出口的流量分配………..…29
表3-7上進下出對於流動式顆粒體床8個進口和8個出口的流量分配………..…29
表3-8下進下出對於流動式顆粒體床8個進口和8個出口的流量分配………..…30
表3-9下進上出對於流動式顆粒體床8個進口和8個出口的流量分配..…………31
表3-10兩個階段控制顆粒床進口管道流場比較………………..…………………34
表3-11氣體通過流動式顆粒床過濾器之壓降隨吹入粉塵時間關係…………..…35
表3-12顆粒床進口管道串式衝擊器A所採集之粉塵重量…………..………....…36
表3-13顆粒床進口管道串式衝擊器B所採集之粉塵重量……………….…….…36
表3-14氧化鋁粉之粒徑分佈……………………………………...……...…………39
表3-15第一階段串式衝擊器A所採集粉塵之粒徑分佈……………..……………39
表3-16第一階段串式衝擊器B所採集粉塵之粒徑分佈……..……………………39
表3-17第二階段串式衝擊器A所採集粉塵之粒徑分佈………………………..…40
表3-18第二階段串式衝擊器B所採集粉塵之粒徑分佈……………..……………40
圖目錄
圖1-1流動式顆粒體床過濾器(MGBF)過濾系統…………………………………..50
圖1-2典型流動是顆粒床淨化系統架構作方式……………………………………51
圖1-3流動式顆粒床過濾器設備圖…………………………………………………52
圖2-1顆粒床設計圖…………………………………………………………………53
圖2-2顆粒床外觀圖…………………………………………………………………54
圖2-3螺旋供料器設計圖…………………………………………..……………..…55
圖2-4-1串式衝擊器設計圖…………………………………………………………56
圖2-4-2串式衝擊器外觀圖…………………………………………………………57
圖2-4-3串式衝擊器各層收集盤外觀圖……………………………………………57
圖3-1氣體進出口型式對於氣體通過流動式顆粒體床之壓降關係圖……………58
圖3-2氣體進出口型式對於流動式顆粒體床進出口管道流速關係圖……………59
圖3-3氣體進出口型式對於流動式顆粒體床進出口管道流量關係圖……………59
圖3-4-1氣體進出口型式對於流動式顆粒體床進出口流量損失(m3/s)關係圖…..60
圖3-4-2氣體進出口型式對於流動式顆粒體床進出口流量損失(%)關係圖……..60
圖3-5-1上進上出型式對於流動式顆粒體床8個進氣口之流量分佈…………….61
圖3-5-2上進上出型式對於流動式顆粒體床8個出氣口之流量分佈…………….61
圖3-6-1上進下出型式對於流動式顆粒體床8個進氣口之流量分佈…………….62
圖3-6-2上進下出型式對於流動式顆粒體床8個出氣口之流量分佈…………….62
圖3-7-1下進下出型式對於流動式顆粒體床8個進氣口之流量分佈…………….63
圖3-7-2下進下出型式對於流動式顆粒體床8個出氣口之流量分佈…………….63
圖3-8-1下進上出型式對於流動式顆粒體床8個進氣口之流量分佈…..……..….64
圖3-8-2下進上出型式對於流動式顆粒體床8個出氣口之流量分佈………...…64
圖3-9氣體通過流動式顆粒床過濾器之壓降隨吹入粉塵時間關係圖…..……..…65
圖3-15第一階段串式衝擊器各層收集盤與d0.5關係圖………………...………….66
圖3-16第二階段串式衝擊器各層收集盤與d0.5關係圖……………………………66
圖4-1-1吹入粉塵1個小時後顆粒床上半部滲透深度觀察圖……………………67
圖4-1-2吹入粉塵1個小時後顆粒床下半部滲透深度觀察圖……………………67
圖4-1-3吹入粉塵1個小時後顆粒床側面滲透深度觀察圖……………….………68
圖4-1-4吹入粉塵1個小時後顆粒床進口3滲透深度觀察圖……………………68
圖4-2-1吹入粉塵2個小時後顆粒床上半部滲透深度觀察圖……………………69
圖4-2-2吹入粉塵2個小時後顆粒床下半部滲透深度觀察圖……………………69
圖4-2-3吹入粉塵2個小時後顆粒床側面滲透深度觀察圖……………….………70
圖4-2-4吹入粉塵2個小時後顆粒床進口3滲透深度觀察圖……………………70
圖4-3-1吹入粉塵3個小時後顆粒床上半部滲透深度觀察圖……………………71
圖4-3-2吹入粉塵3個小時後顆粒床下半部滲透深度觀察圖……………………71
圖4-3-3吹入粉塵3個小時後顆粒床側面滲透深度觀察圖……………….………72
圖4-3-4吹入粉塵3個小時後顆粒床進口3滲透深度觀察圖……………………72
圖4-4-1吹入粉塵4個小時後顆粒床上半部滲透深度觀察圖……………………73
圖4-4-2吹入粉塵4個小時後顆粒床下半部滲透深度觀察圖……………………73
圖4-4-3吹入粉塵4個小時後顆粒床側面滲透深度觀察圖……………….………74
圖4-4-4吹入粉塵4個小時後顆粒床進口3滲透深度觀察圖……………………..74
圖4-5-1吹入粉塵14個小時後顆粒床上半部滲透深度觀察圖………………...…75
圖4-5-2吹入粉塵14個小時後顆粒床下半部滲透深度觀察圖………………...…75
圖4-5-3吹入粉塵14個小時後顆粒床側面滲透深度觀察圖……………..….……76
圖4-5-4吹入粉塵14個小時後顆粒床進口3滲透深度觀察圖……………………76
附錄目錄
A-1實驗儀器規格表……………………………………………..………………….77
B-1變頻器頻率對於流動式顆粒體床進口管道流場關係表………….….……..…78
B-2變頻器頻率對於流動式顆粒體床進口管道中心點流速關係圖………………78
B-3變頻器頻率對於流動式顆粒體床進口管道平均流速關係圖…………………79
B-4變頻器頻率對於流動式顆粒體床進口管道流量關係圖………………………79
C-1螺旋供料器之進料頻率與馬達段數關係表……………………………………80
C-2螺旋供料器之進料頻率與馬達段數關係圖……………………………………80
D-1臨界風速與吹入粉塵時間關係表……………………………………...………81
D-2臨界風速與吹入粉塵時間關係圖……………………………………...………81
E-1兩次操作時間下進口管道串式衝擊器A所採集之粉塵重量關係圖…………82
E-2兩次操作時間下出口管道串式衝擊器B所採集之粉塵重量關係圖…………82
E-3兩次操作時間下進口管道串式衝擊器A所採集之粉塵重量配比關係圖....…83
E-4兩次操作時間下出口管道串式衝擊器B所採集之粉塵重量配比關係圖....…83
F-1上進上出對於顆粒體床8個進口和8個出口的平均流速分配表…….…….…84
F-2上進上出對於顆粒體床8個進口和8個出口的平均流速分配表…………..…84
F-3上進上出對於顆粒體床8個進口和8個出口的平均流速分配表……………..85
F-4上進上出對於顆粒體床8個進口和8個出口的平均流速分配表……………..85
G-1氧化鋁粉之粒徑分佈圖(第1次量測)…………………………...………….…86
G-2氧化鋁粉之粒徑分佈圖(第2次量測)…………………………...………….…87
G-3氧化鋁粉之粒徑分佈圖(第3次量測)………..………….………………….…88
G-4氧化鋁粉之粒徑分佈圖(第4次量測)…………...………………………….…89
G-5氧化鋁粉之粒徑分佈圖(第5次量測)……………...…………………….……90
H-1第一階段串式衝擊器A第1層收集盤所採集粉塵之粒徑分佈圖……………91
H-2第一階段串式衝擊器A第2層收集盤所採集粉塵之粒徑分佈圖……………92
H-3第一階段串式衝擊器A第3層收集盤所採集粉塵之粒徑分佈圖…..………..93
H-4第一階段串式衝擊器A第4層收集盤所採集粉塵之粒徑分佈圖……………94
I-1第一階段串式衝擊器B第1層收集盤所採集粉塵之粒徑分佈圖…………..…95
I-2第一階段串式衝擊器B第2層收集盤所採集粉塵之粒徑分佈圖……..………96
J-1第二階段串式衝擊器A第1層收集盤所採集粉塵之粒徑分佈圖.……….……97
J-2第二階段串式衝擊器A第2層收集盤所採集粉塵之粒徑分佈圖...………...…98
J-3第二階段串式衝擊器A第3層收集盤所採集粉塵之粒徑分佈圖…….….…....99
J-4第二階段串式衝擊器A第4層收集盤所採集粉塵之粒徑分佈圖….……...…100
K-1第二階段串式衝擊器B第1層收集盤所採集粉塵之粒徑分佈圖…………...101
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