頁籤選單縮合
題名 | A Film Model for Gas Absorption with an Irreversible Chemical Reaction of General Order in the Presence of Interfacial Resistance=界面阻力存在時通用階次不可逆反應氣體吸收之薄膜模式 |
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作者 | 張慶源; 許浩洋; 陳國慶; 邱浚祐; 李守仁; 施信民; | 書刊名 | 中國環境工程學刊 |
卷期 | 9:3 1999.09[民88.09] |
頁次 | 頁179-186 |
分類號 | 445.63 |
關鍵詞 | 氣體吸收; 界面阻力; 不可逆化學反應; α、β階反應; Gas absorption; Interfacial resistance; Irreversible chemical reaction; αβ-th order reaction; |
語文 | 英文(English) |
中文摘要 | 本文提出界面阻力存在時之通用階次不可逆反應(γ�嫂+γ B→產物,-γ=k C C)等溫氣體吸收系統之薄膜模式,並求得其數值解。此系統的主要參數包括:液相與界面的質量傳送係數比(k/ks),反應速率參數(M, M=k D�嵩 C��/(k)��),反應物的濃度比(k , k =C/C),和擴散係數比(D, D=D/D��)。結果顯示,在大的k值時,界面阻力對吸收速率的影響很顯著。而且衰減因子r(=化學反應吸收具有界面阻力與不具界面阻力的質量通量的比值)有局部最小值的出現。將本文模式簡化模擬一些特殊情況,可得到與前人相符的結果。 |
英文摘要 | A theoretical analysis employing the film model for isothermal gas absorption with an irreversible chemical reaction of general order (γ�嫂+γ B →products, -γ=k C C ) in the presence of interfacial resistance is performed. Numerical solutions are obtained for the model equations. The effects of major system parameters on system performance are examined. These parameters include the ratio of liquid and interfacial mass-transfer coefficients (k /ks), reaction rate parameter (M, M=k D�嵩 C��/(k)��), concentration ratio of reactants (k , k =C/C), and diffusivity ratio (D, D=D/D��). The results indicate that the reduction effect of interfacial resistance on the absorption rate is most significant with a larger k value. Furthermore, a local minimum value of the reduction factor R (=ratio of mass flux with the combined effect of chemical reaction and interfacial resistance to that with chemical reaction only) appears at some M for any particular finite value of k. For some known special cases, the present solution agrees with the previous work of other investigators. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。