博碩士論文 103323058 詳細資訊




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姓名 許端祐(Duan-you Syu)  查詢紙本館藏   畢業系所 機械工程學系
論文名稱 移動式顆粒床之進口粉塵濃度與再生循環對過濾效率的影響
檔案 [Endnote RIS 格式]    [Bibtex 格式]    至系統瀏覽論文 (2020-1-18以後開放)
摘要(中) 本研究依據先前開發針對中高溫除塵技術-移動式顆粒床過濾器
及周邊子系統(如:氣體輸送系統、濾材/粉塵篩分系統及濾材循環再生
系統等),進行長時間冷性能連續化過濾運轉測試,本研究之實驗結果
能提供未來建立中高溫除塵技術開發與商業化之依據。
本論文中探討在顆粒床過濾器在面對不同粉塵濃度的情形下的
情形;在滾筒篩分系統中,由於操作方法及粉塵含量的不同導致顆粒
濾材與粉塵的篩分效率變化影響再生效率;在顆粒濾材之再生循環過
程中,將微量粉塵經由再生循環管路回送至床體內部,其對整體顆粒
床過濾效率之影響;以及在不同進氣口粉塵濃度的影響下,顆粒床過
濾器整體過濾效率、壓降及出口粉塵粒徑的變化。
實驗結果顯示,在滾筒篩分系統中,粉塵含量的多寡對其整體的
篩分效率影響不大;在顆粒床過濾器整體之過濾效率方面,進風口於
低粉塵濃度的條件下,顆粒床過濾器有著良好的過濾效率,其整體過
濾效率的結果皆維持在99%以上,出口粉塵平均粒徑為1.75 μm 以
下。但在進氣口於高粉塵濃度的條件下,由於顆粒床過濾器其床體內
部粉塵含量處於過飽和的情形,使得顆粒床過濾器整體的過濾效率、
出口粉塵粒徑皆產生大幅度的波動;研究實驗結果顯示,於濾材質量
流率480 g/min、滾筒轉速21.5 rpm,在入口表面風速70 cm/s 的條件
下,可以得到較佳的過濾效率與出口粉塵平均粒徑,分別為98.6 %與
3.65 μm。
摘要(英) This study is based on the high temperature dust removal technology-
Moving Granular Bed Filter and other subsystems (e.g. Gas delivery
system, Filter/dust screening system and Filter recycle system) operation
test for long term. The experimental results can provide the future
development of high-temperature dust removal technology and
commercial basis.
This thesis investigated the operation of granular bed filter in different
conditions of dust concentration, the regeneration efficiency is affected by
the different separation rates due to different operation methods and dust
contents in the drum screening system, the influence of overall efficiency
of the granular bed filter from trace dust through the regeneration cycle
pipeline back into the granular bed in the regeneration process, and the
variation of the whole collection efficiency, pressure drop and export dust
size in different inlet dust concentration.
The experimental results showed that the amount of dust contents
cannot affect its overall screening efficiency in the drum screening system.
For the overall filter efficiency of the granular bed filter, the import with
low dust concentration can provide great collection efficiency and low
export dust size, each of them are more than 99% and less than 1.75μm
respectively. But when the condition of high dust concentration that
collection efficiency and dust size has a large fluctuation due to
supersaturation of the dust content inside the granular bed. The
experimental results show that the mass flow rate of filter media is 480
g/min and the rotational speed is 21.5 rpm. On the condition of inlet velocity of 70 cm/s, the collection efficiency and dust size is 98.6% and
3.65 μm.
關鍵字(中) ★ 移動式顆粒床過濾器
★ 粉塵濃度
★ 篩分效率
★ 過濾效率
關鍵字(英) ★ moving granular bed filter
★ dust concentration
★ screening efficiency
★ collection efficiency
論文目次 摘要 ......................................................................................................... I
ABSTRACT .......................................................................................... II
目錄 ...................................................................................................... IV
附圖目錄 .............................................................................................. VI
附表目錄 .............................................................................................. XI
第一章 簡介 ........................................................................................... 1
1.1 前言 .................................................................................................. 1
1.2 文獻回顧 ........................................................................................... 3
1.3 研究目的 ........................................................................................... 8
1.4 論文章節架構 ................................................................................... 9
第二章 滾筒篩分系統實驗 .................................................................. 12
2.1 實驗材料及設備 ............................................................................. 12
2.1.1 實驗材料及量測儀器 .................................................................. 12
2.1.2 實驗設備 ..................................................................................... 13
2.2 相關理論 ......................................................................................... 14
2.3 實驗參數 ......................................................................................... 16
2. 4 實驗步驟 ........................................................................................ 17
2.5 實驗結果與討論 ............................................................................. 19
第三章 連續化顆粒床整合過濾系統實驗 .......................................... 25
3.1 實驗設備 ......................................................................................... 25
3.1.1 實驗材料及量測儀器 .................................................................. 25
3.1.2 顆粒床濾過器整合系統實驗設備 .............................................. 26
3.2 相關理論 ......................................................................................... 29
3.2.1 分離過濾行為 ............................................................................. 29
3.2.2 分離過濾機制 ............................................................................. 30
3.3 實驗參數 ......................................................................................... 33
3.4 實驗步驟 ......................................................................................... 35
3.5 實驗結果與討論 ............................................................................. 36
3.5.1 固定粉塵濃度4612.5 mg/m3(3750 ppmw),改變質量流率及滾
筒轉速之實驗結果 ............................................................................... 36
3.5.2 固定粉塵濃度9225 mg/m3(7500 ppmw),改變質量流率及滾筒
轉速之實驗結果 ................................................................................... 38
3.5.3 固定粉塵濃度18450 mg/m3(15000 ppmw),改變質量流率及滾
筒轉速之實驗結果 ............................................................................... 39
3.6 總結 ................................................................................................ 40
第四章 結論 ......................................................................................... 67
4.1 滾筒篩分系統 ................................................................................. 67
4.2 顆粒床整合過濾系統實驗 .............................................................. 67
參考文獻 ............................................................................................... 70
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指導教授 蕭述三(Shu-san Hsiau) 審核日期 2017-1-19
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