移動式顆粒床過濾器應用於去除PM2.5之研究

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張立揚(Li-Yang Chang) 查詢紙本館藏

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能源工程研究所

論文名稱

移動式顆粒床過濾器應用於去除PM2.5之研究

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摘要(中)

自兩次工業革命以來，各國的能源使用早年幾乎均以燃煤發電為主，此發電方式對
環境的衝擊，在過去幾十年受到各國廣泛重視。由於火力發電之燃燒過程將帶來許多其
他副產物(飛灰、底灰、二氧化碳、氮氧化物、硫氧化物及粒狀物等)，對環境產生諸多
影響，所以火力發電廠常設置許多環保設備、配套子系統以控制汙染物排放。鑒於已有
研究提出顆粒床過濾器結合靜電集塵之研究，以提升整體對小粒徑的去除效率，本研究
建立在前人開發之顆粒床過濾器的基礎上，參考陶瓷過濾器過濾效能之研究，提出一種
以顆粒床過濾器與陶瓷過濾器串接而成的複合式過濾系統，並將其應用於去除PM2.5。
本研究進行了整體系統於不同溫度下、不同濾材質量流率之實驗，得出常溫、高溫
下對相同濃度含塵氣體之過濾結果；並且討論對不同大小顆粒之分級過濾效率，亦與過
濾機制實驗結果顯示常溫下系統能以99.85%之過濾效率將氣體處理至平均粒徑1.15 μm，
600°C 下能以95.47%之過濾效率將氣體處理至平均粒徑2.43 μm；經過綜合比對可得出
此複合式過濾系統對含塵氣體之處理效能為：將濃度為12000 ppmw 且平均粒徑53.52
μm 的含塵氣體，以大於95.47%之過濾效率處理至PM2.5 等級。

摘要(英)

The demand in energy consumption has grown significantly since the Industrial
Revolution. The major source for power generation has mainly based on coal, and will likely
to remain the domination in the foreseeable future because of its economical attractiveness.
However, the environmental impact of the product in flue gas has attracted more and more
attention. Power companies are starting to apply pollution-controlling subsystems in order to
reach environment requirements.
Regarding some research studying a different kind of granular bed filter, combined with
electrostatic enhancement to improve collection efficiency of fine particles, this research
considers a similar approach. By introducing a second-stage filter (Candle Filter) connecting
with the current granular bed filter, a compound filtration system is developed. The system is
aimed to improve the collection efficiency of PM2.5 particulates under various conditions, which
is considered as a shortage of granular bed filters.
By experiment approach, this research studies the filtration results of the compound system
under different parameters, such as experiment temperature, mass flow rate of the filter media,
etc. The mechanism by which the particulates be removed has also been discussed. The
experiment results show a 95.47% collection efficiency for a dust flow with a concentration of
12000 ppmw, lowering the mean diameter of the particulate from 53.52 μm to PM2.5.

關鍵字(中)

★ 顆粒床過濾器
★ 陶瓷過濾器
★ 中高溫除塵
★ 潔淨技術
★ PM2.5

關鍵字(英)

★ Granular Bed Filter
★ Candle Filter
★ Hot gas clean up
★ clean technology
★ PM2.5

論文目次

摘要 ............................................................................................................................................ I
Abstract ....................................................................................................................................II
目錄......................................................................................................................................... III
圖目錄.......................................................................................................................................V
表目錄....................................................................................................................................VII
符號說明.............................................................................................................................. VIII
第一章緒論 ..............................................................................................................................1
1.1 前言.........................................................................................................................1
1.2 研究動機與目的.....................................................................................................3
1.3 文獻回顧.................................................................................................................4
1.4 論文章節架構.........................................................................................................8
第二章實驗設備與方法..........................................................................................................9
2.1 實驗設備.................................................................................................................9
2.1.1 第一段過濾程序..........................................................................................9
2.1.2 第二段過濾程序........................................................................................10
2.1.3 周邊子系統................................................................................................10
2.1.4 量測設備....................................................................................................14
2.2 實驗方法...............................................................................................................15
2.2.1 過濾機制....................................................................................................15
2.2.2 過濾行為....................................................................................................17
2.2.3 過濾器性能指標........................................................................................19
2.2.4 實驗參數....................................................................................................21
2.2.5 實驗步驟....................................................................................................23
第三章實驗結果與討論........................................................................................................31
3.1 過濾器各參數之變化...........................................................................................31
3.1.1 進出口溫度及溫度差................................................................................31
3.1.2 顆粒床進出口壓力及壓力差....................................................................32
3.2 顆粒去除效能之討論...........................................................................................34
3.2.1 受濾材質量流率變化之影響....................................................................34
3.2.2 受實驗溫度變化之影響............................................................................35
3.2.3 小結............................................................................................................36
3.3 小粒徑顆粒去除效能之討論...............................................................................38
3.3.1 重要過濾機制及理論介紹........................................................................38
3.3.2 分級過濾效率結果....................................................................................39
3.3.3 小結............................................................................................................41
第四章結論 ............................................................................................................................53
第五章參考文獻....................................................................................................................54

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指導教授

蕭述三

審核日期

2021-10-25

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