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論文中文名稱:冷陰極燈管熱脫附處理特性之研究 [以論文名稱查詢館藏系統]
論文英文名稱:A Study of CCFLs Treatment by Using
Thermal Desorption Technology [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:環境規劃與管理研究所
中文姓名:李雅芬
英文姓名:Ya-Fen Li
研究生學號:94608008
學位類別:碩士
語文別:中文
口試日期:2007-06-13
論文頁數:84
指導教授中文名:張添晉
口試委員中文名:余炳盛;章裕民;游勝傑
中文關鍵詞:冷陰極燈管熱脫附汞齊螢光粉廢汞燈管
英文關鍵詞:Cold Cathode Fluorescent Lamps (CCFLS)Thermal DesorptionAmalgamPhosphor PowderWaste Mercury Lamp
論文中文摘要:冷陰極燈管是高科技產品之主流元件,包括液晶顯示螢幕( LCD)、掃瞄器、指示燈具、裝飾用燈等皆利用冷陰極燈管作為主要發光元件,其中又以液晶顯示螢幕所需之冷陰極燈管數量最大,平均每年有近億支冷陰極燈管產生。
依據環保署相關研究計畫推估顯示,2004年進入國內廢棄物處理系統之冷陰極燈管約4,993,700支,我國2004年消耗之冷陰極燈管中含汞量為316公斤,遠超過丹麥之5公斤,達63倍之多。人類曾有多起受有機汞及無機汞之累積性中毒傷害,龐大之含汞量勢必對環境及人體健康造成危害,故妥善處理實為當務之急。
本研究分為兩部份,實廠實驗部份及實驗室分析部份,在實廠實驗部份以熱脫附處理冷陰極燈管含汞螢光粉。冷陰極燈管含汞螢光粉之成分複雜,處理不易,且熱脫附效果只有81.24%,較其他高汞燈管為差,故以熱脫附處理冷陰極燈管含汞螢光粉時,可能需要較高溫度或較長時間之操作條件。
在實驗室分析部份針對冷陰極燈管含汞螢光粉之處理特性進行分析,以熱脫附方法回收汞,並設定溫度為控制條件,以了解不同溫度對冷陰極燈管含汞螢光粉處理效率之影響,實驗成果顯示冷陰極燈管含汞螢光粉汞釋出溫度介於30℃~300℃左右,在200℃以後僅剩少量殘餘的汞,與混樣之冷陰極燈管螢光粉之汞釋出行為大不相同。因此推論若將汞齊與廢冷陰極燈管分離,僅處理純冷陰極燈管螢光粉則可將處理溫度降至350℃,相較於處理混樣之冷陰極燈管螢光粉(含汞齊成份)需加熱至700℃仍有汞殘餘,將可大幅降低成本及提高經濟效益。
論文英文摘要:CCFLS is one of the major element of high technology products, CCFLS can used in Back light、Scanner、Exit Sign、Light Box, the most amount of CCFLS is used by LCD. Currently, there are 1 million CCFLS per Year in Taiwan.
According to EPA study, it reveals that 316 kg mercury was consumed in CCFLS in Taiwan during year 2004. In addition, 4,993,700 of CCFLS used by high technology industry was well treated through industrial waste treatment system. Mercury content in high mercury-containing lamps using in high technology industrial are more than 5kg in Denmark. Human beings have been found to be harmed throughout the accumulation of organic- or inorganic-mercury in many different routes, which causd a significant impact on human health.
In this study, the CCFLs were treated by full scale thermal desorption process and batch experiments.The average thermal desorption efficiencies of CCFLs was only 81.24%, which was quite lower than other high mercury-contained lamps. The more complexity the mercury compound, the higher vaporized temperature it is.
The mercury vaporization batch experiments set up different thermal desorption temperatures. In this study, it was considered that different CCFLs contained mercury/fluorescent-powder vaporized to mercury vapor at different temperature. This revealed that the pre-heater temperature influence the thermal desorption efficiency on pure CCFLs contained mercury/fluorescent-powder, the pure mercury vaporized between 30℃~300℃. There was still a lot of mercury vaporized after 200℃. The result is different from complexity CCFLs contained mercury/fluorescent-powder. The are amalgam in CCFLs, the higher vaporized temperature it is. In the future, the pre-heater temperature can be reduced 350℃ to 700℃ in full scale thermal desorption process. It will be reduced the cost and increased economical benefit.
論文目次:中文摘要..........................................i
英文摘要.........................................ii
誌謝.............................................iv
目錄..............................................v
表目錄..........................................vii
圖目錄...........................................ix
第一章 前言......................................1
1.1 研究緣起......................................1
1.2 研究目的......................................1
第二章 文獻回顧..................................6
2.1 冷陰極燈管之特性..............................6
2.1.1 冷陰極燈管發光原理..........................7
2.1.2 冷陰極燈管應用範圍及產量....................8
2.1.3 冷陰極燈管生產製程.........................10
2.1.4 廢冷陰極燈管廢棄過程對環境之影響...........12
2.2 冷陰極燈管含汞量與汞之流佈分析...............14
2.3 過去國內實廠處理高汞燈管之實驗成果...........18
2.3.1 曝光燈管與UV燈處理效率分析結果.............18
2.3.2 日光燈排氣管處理效率分析結果...............19
2.3.3 日光燈含汞螢光粉處理效率分析結果...........20
2.4 高汞燈管處理方法之比較.......................23
2.4.1 熱脫附處理與其他處理方式之比較.............23
2.4.2 瑞典廢含汞燈管之處理技術...................24
2.5 國內外廢燈管回收清理之法規與執行方式.........27
2.5.1 國內現況...................................27
2.5.2 國外現況...................................28
第三章 研究內容與實驗方法.......................30
3.1 研究內容.....................................30
3.2 實廠實驗設計.................................31
3.2.1 實驗原理與方法.............................31
3.2.2 實驗流程與設備.............................32
3.2.3 實驗操作條件...............................36
3.2.4 檢測分析方法 ...............................37
3.3 實驗室實驗設計 ...............................39
3.4 實驗室實驗設備與樣品.........................41
3.5 實驗室實驗方法與流程.........................44
3.5.1 實驗通氣量與樣品量之計算...................44
3.5.2 實驗室實驗步驟.............................45
第四章 結果與討論 ...............................46
4.1 實廠處理冷陰極燈管螢光粉實驗結果分析.........46
4.1.1 廢冷陰極燈管汞重金屬全含量分析.............46
4.1.2 冷陰極燈管含汞螢光粉TCLP溶出液中汞之分析結果...............................................49
4.2 實驗室處理冷陰極燈管螢光粉實驗結果分析.......52
4.2.1 實廠混樣冷陰極燈管螢光粉不同溫度汞釋放情形
.................................................55
4.2.2 實廠混樣冷陰極燈管特性及組成份分析.........56
4.2.3 不同廠牌冷陰極燈管螢光粉實驗成果分析.......60
4.3 實廠熱脫附結果之質量流佈計算.................64
4.3.1 實廠處理之各類燈管處理情形及空氣中汞濃度之採樣狀況...............................................64
4.3.2 質量流佈計算結果...........................67
4.4 冷陰極燈管環境管理對策.......................69
4.4.1 工廠生產階段...............................73
4.4.2 清運蒐集階段 ...............................73
4.4.3 廢棄處理階段...............................74
第五章 結論與建議 ...............................79
5.1 結論.........................................79
5.2 建議.........................................80
參考文獻.........................................82
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