Barisantrik sistemlerde dört bileşenli gaz difüzyonun sürekli boru reaktörde teorik incelenmesi
The Theorical study of the four-component diffusion in the steady tubular reactor on berysentric systems
- Tez No: 39350
- Danışmanlar: PROF.DR. A. RASİM BÜYÜKTÜR
- Tez Türü: Doktora
- Konular: Enerji, Makine Mühendisliği, Energy, Mechanical Engineering
- Anahtar Kelimeler: Barisantrik sistemler, Borusal akım reaktörleri, Difüzyon, Berysentric systems, Tubular flow reactors, Diffusion
- Yıl: 1993
- Dil: Türkçe
- Üniversite: İstanbul Teknik Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
ayıı ()=(-2ysı-3 + 9yıı-2 - ISyu-ı + llyü) 3 r* r* = 16 Ar* is valid. Radial velocities, from the continuity equation, « r -1 f 3 v*~:- J(r "p* u*) dr* r*p* O £>x* is obtained by the numerical integration, with respect to the trapezoid and Simpson formulations. Due to stability considerations, a weight factor of V = 0.75 is used in calculations. A fortran code is used to pertorm the calculations and the results are displayed as d i ağ r araş. Based on the results of our solution, due to the increase in mole number a proportional increase occurs in axial rates. inside ı-eactor, the continuity equation is valid provided ö*ü* -1. From this, öne can see that the density decreases. Order of the reaction affects the change in the velocity iield. For zero order of reaction, since the chemical transformation is greater, the change in the ve¬ locity field takes place faster. For pressure losses, in case of the no-reaction, Da=0, AP*=48x* is valid. The accelaretion in axial speed fi¬ eld and grovıing shear tensions at the inner surface, ca- use greater pressure losses in case of reaction. At the end of reaction at x* = l, AP approaches to 96. This theorical study has shovjn that the results obtai- ning as dimensionless are valid for ali pressure and tem- perature values in the condition vjhich is valid for the ideal gas equation. Reaction rate is the greatest factor on the consumption of reactants inside the reactor. An increasing Da rneans greater amounts reaching to the inner surface. As reacti¬ on order, v?hich may also affect the concentration field, decreases the reaction mechanisrn is facilitated, and as a result transformation speeds up. Chemical transformation, defined as, -XI-
Özet (Çeviri)
VAX _, _ 1 _O. - X YA o increases uith the velocity of reaction. However, since this increase is bounded by diffusion rate and in a more general sense by radial mass transfer, transformation le- vels ott at a certain value of Da=50. This process is called the diffusion limiting. The situation of Da=0.1 is the reaction limiting,Since the reaction rate is slou in such situations, the mass transfer in gaseous part has no eflect on the transformation. The average concentration, written in the eguation above, yÂT, ı yAx & 2 f yAp*u*rtdr* O is calculated by numerical integration.ayıı ()=(-2ysı-3 + 9yıı-2 - ISyu-ı + llyü) 3 r* r* = 16 Ar* is valid. Radial velocities, from the continuity equation, « r -1 f 3 v*~:- J(r“p* u*) dr* r*p* O £>x* is obtained by the numerical integration, with respect to the trapezoid and Simpson formulations. Due to stability considerations, a weight factor of V = 0.75 is used in calculations. A fortran code is used to pertorm the calculations and the results are displayed as d i ağ r araş. Based on the results of our solution, due to the increase in mole number a proportional increase occurs in axial rates. inside ı-eactor, the continuity equation is valid provided ö*ü* -1. From this, öne can see that the density decreases. Order of the reaction affects the change in the velocity iield. For zero order of reaction, since the chemical transformation is greater, the change in the ve¬ locity field takes place faster. For pressure losses, in case of the no-reaction, Da=0, AP*=48x* is valid. The accelaretion in axial speed fi¬ eld and grovıing shear tensions at the inner surface, ca- use greater pressure losses in case of reaction. At the end of reaction at x* = l, AP approaches to 96. This theorical study has shovjn that the results obtai- ning as dimensionless are valid for ali pressure and tem- perature values in the condition vjhich is valid for the ideal gas equation. Reaction rate is the greatest factor on the consumption of reactants inside the reactor. An increasing Da rneans greater amounts reaching to the inner surface. As reacti¬ on order, v?hich may also affect the concentration field, decreases the reaction mechanisrn is facilitated, and as a result transformation speeds up. Chemical transformation, defined as, -XI-VAX _, _ 1 _O. - X YA o increases uith the velocity of reaction. However, since this increase is bounded by diffusion rate and in a more general sense by radial mass transfer, transformation le- vels ott at a certain value of Da=50. This process is called the diffusion limiting. The situation of Da=0.1 is the reaction limiting,Since the reaction rate is slou in such situations, the mass transfer in gaseous part has no eflect on the transformation. The average concentration, written in the eguation above, yÂT, ı yAx & 2 f yAp*u*rtdr* O is calculated by numerical integration.ayıı ()=(-2ysı-3 + 9yıı-2 - ISyu-ı + llyü) 3 r* r* = 16 Ar* is valid. Radial velocities, from the continuity equation, « r -1 f 3 v*~:- J(r ”p* u*) dr* r*p* O £>x* is obtained by the numerical integration, with respect to the trapezoid and Simpson formulations. Due to stability considerations, a weight factor of V = 0.75 is used in calculations. A fortran code is used to pertorm the calculations and the results are displayed as d i ağ r araş. Based on the results of our solution, due to the increase in mole number a proportional increase occurs in axial rates. inside ı-eactor, the continuity equation is valid provided ö*ü* -1. From this, öne can see that the density decreases. Order of the reaction affects the change in the velocity iield. For zero order of reaction, since the chemical transformation is greater, the change in the ve¬ locity field takes place faster. For pressure losses, in case of the no-reaction, Da=0, AP*=48x* is valid. The accelaretion in axial speed fi¬ eld and grovıing shear tensions at the inner surface, ca- use greater pressure losses in case of reaction. At the end of reaction at x* = l, AP approaches to 96. This theorical study has shovjn that the results obtai- ning as dimensionless are valid for ali pressure and tem- perature values in the condition vjhich is valid for the ideal gas equation. Reaction rate is the greatest factor on the consumption of reactants inside the reactor. An increasing Da rneans greater amounts reaching to the inner surface. As reacti¬ on order, v?hich may also affect the concentration field, decreases the reaction mechanisrn is facilitated, and as a result transformation speeds up. Chemical transformation, defined as, -XI-VAX _, _ 1 _O. - X YA o increases uith the velocity of reaction. However, since this increase is bounded by diffusion rate and in a more general sense by radial mass transfer, transformation le- vels ott at a certain value of Da=50. This process is called the diffusion limiting. The situation of Da=0.1 is the reaction limiting,Since the reaction rate is slou in such situations, the mass transfer in gaseous part has no eflect on the transformation. The average concentration, written in the eguation above, yÂT, ı yAx & 2 f yAp*u*rtdr* O is calculated by numerical integration.
