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題名 | 以活性炭熱擺吸附塔處理廢有機蒸氣之研究 |
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作者姓名(中文) | 胡子陵; 黃振家; | 書刊名 | 筧橋學報 |
卷期 | 1 1994.11[民83.11] |
頁次 | 頁155-172 |
分類號 | 460.025 |
關鍵詞 | 吸附; 再生; 活性炭; 溫擺; Adsorption; Regeneration; Activated carbon; Temperature swing; |
語文 | 中文(Chinese) |
中文摘要 | 本論文主要研究固定床活性炭吸附塔對有機溶劑蒸氣之吸附與活性炭再生。使用 之丙酮或乙醛兩種溶劑蒸氣乃以惰性氮氣帶入床內進行吸附,在完成吸附操作後,飽和之活 性炭床再藉由熱氮氣進行再生。本論文由壓力量測法所獲得之單成份吸附物與活性炭間之等 溫平衡關係式和動態吸附與脫附操作之實驗數據結果,使用數值模擬分析了各種操作參數如 熱傳係數、 質傳係數、 床體壓力、 再生溫度、 及溫度程式化之脫附程序( Temperature-Programmed Desorption Process )研究等對丙酮或乙醛在溫擺吸附程序之影 響, 並同時考慮了清除氣體( Purge Gas )與脫附能量的消耗,在整個吸附與脫附操作中 所扮演的角色,即脫附過程先以特性溫度( Characteristic Temperature )經適當的持留 時間加熱後,以固定速率降低溫度,可減少脫附能量之需求。 本論文以線性驅動力模式( Linear Driving Force Model )為基礎,提出一非平衡、非絕 熱之數學模式,其中總質傳係數是可變的,此模式成功的模擬了固定床吸附塔的吸附及脫附 過程之動態實驗數據,並且證實了顆粒內之質量傳送為本模式質傳機構之重要控制步驟,其 中又以表面擴散為主。 |
英文摘要 | The adsorption of organic solvent vapor in a fixed-bed carbon adsorber and the regeneration of a carbon bed were studied in this work. Both acetone and acetaldehyde solvents were studied. After complete adsorption, the saturated carbon was regenerated by hot nitrogen purge. The isotherms between adsorbates and carbons were also determined manometrically. In this paper, experimental and modeling results were used to study the effect of heat-transfer coefficient, mass-transfer coefficient, bed pressure, regeneration temperature, and temperature-programmed desorption process on TSA cyclic process. Also these works were investigated through experimental and modeling results to obtain the influence on purge gas consumption and energy requirement of the TSA process, and the results can be described as: For saving energy, there is an optimal holding time in the regeneration process at the characteristic temperature followed by a pertinent rate of decreasing purge gas temperature. A nonequilibrium, nonadiabatic model was developed for describing a linear driving force mass transfer relationship with variable lumped-resistance coefficients. The dynamic model simulates experimental data of both adsorption and desorption processes well. The system was found to be an intraparticle mass transfer controlled process. Surface diffusion dominates the intraparticle mass transfer mechanism. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。