蓄熱式焚化爐之數學模擬與實驗

MATHEMATICAL MODELING AND EXPERIMENT OF REGENERATIVE THERMAL OXIDIZERS

張孟溫(Meng-wen Chang)

指導教授 ： 陳嘉明

大同大學/工程學院/化學工程學系所/博士(2010年)

摘要

塗佈製程除廣泛應用於印刷業、合成皮業、燙金膜、隔熱紙及各種粘性膠帶等傳統產業外，也廣泛地應用於銅箔基板、FPC、IC封裝及光電等高科技電子產業。其製程特性為大量揮發性有機物（VOCs）廢氣排放及高熱能需求．現有製程常採用活性碳床吸附處理技術或直燃爐處理製程所排放廢氣。因為活性碳吸附後的廢棄活性碳不易再生，使用塗佈製程的工業界對使用蓄熱式燃燒爐來處理揮發性有機物漸感興趣。
蓄熱式燃燒爐(RTO)配置有兩個或數個蓄熱床，蓄熱床內充填陶製蓄熱材，由於陶製蓄熱材具有高蓄熱能力及高接觸面積，使VOCs廢氣流經蓄熱材預熱至燃燒溫度後，廢氣中所含的有機溶劑可完全分解成二氧化碳和水；同時焚化分解時所產生的熱能又可於經過另一組蓄熱材時儲存蓄熱，作為熱能回收使用。
為深入了解蓄熱式燃燒爐的操作特性，本研究架設一實驗裝置，使用不同尺寸的蓄熱材、進料流量、床體切換時間、與燃燒溫度進行測試，同時也推導數學模式來分析實驗數據，並模擬在不同操作條件下的蓄熱式燃燒爐功效。

關鍵字

揮發性有機物 ； 蓄熱式燃燒爐 ； 塗佈製程

並列摘要

Coating process is not only widely used in print industry, PU synthetic leather industry, conventional stamping foils, window films and adhesive type manufacturing industry, but also widely used in high technical electric industries such as copper clad laminate (CCL), flexible print circuit (FPC), IC packaging, and photoelectric industry. The characteristic of coating process is its generation of high volume of waste gas that contains high volatile organic compounds (VOCs) and high consumption on heat and energy. At present, the most popular waste gas treatment units are activated carbon absorber and thermal oxidizer. Due to the difficulty of regenerating the spent activated carbon, regenerative thermal oxidizer (RTO) is gaining interest to treat VOC waste gas in industries involving coating processes.
Regenerative thermal oxidizer (RTO) consists of two or more regeneration beds packed with ceramic material. Because of ceramic material having high heat-storing capability and large contact surface area, the pre-heated VOCs can be decomposed into carbon dioxide and water in the combustion chamber and flow through another bed for heat recovery.
To better understand the RTO operating characteristics, this study sets up a laboratory-scale RTO system with different packing sizes to carry out the heat recovery tests using different feed air flow rates, bed switch times, and combustion temperatures. Mathematical models are developed to analyze the experimental RTO operating data and used to simulation RTO performances under vary operating conditions.

並列關鍵字

Coating process ； VOCs ； RTO

參考文獻

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