fixed bed reactor design equation

Ngày tải lên: 05/09/2013, 16:11

... pellets inside a reactor (column or tube). In such fixed -bed reactors, the conventional way to achieve the appropriate Table 2.1 Slurry reactors versus conventional fixed -bed reactors N Compared ... conventional types of fixed -bed reactors, which are mainly employed for multiphase processes: Trickle -Bed Reactors (TBRs), Bubble (packed) Column Reactors (BCRs), and MultiTubular Reactors (MTRs). Some ... Compared features Slurry reactor Fixed- bed reactors 1 Reaction performance 1.1 Overall reaction rate related to the catalyst mass High Low 1.2 Overall reaction rate related to the reactor volume (or...

Ngày tải lên: 16/03/2014, 22:20

... different design levels of conversion on the sizes of the reactor and the condenser. A 90% conversion design produces a 1.68-m 3 reactor Figure 2.25 Matlab program for autorefrigerated reactor. 2.7 ... the conversion is only 85% in the first reactor. If the 2-CSTR design has more potential control problems than the 1-CSTR design, we would expect the 3-CSTR design to be even worse. This is precisely ... each reactor is further reduced (14.4 m 3 with diameter 2.09 m), so the total reactor volume of the thr ee vessels is 43 m 3 , which is only 16% of the volume of the reactor in the 1-CSTR design. ...

Ngày tải lên: 01/04/2014, 10:24

... in Reactors 351 Relationship Between Conversion, Selectivity, and Yield 353 Plug Flow Reactor 362 Heterogeneous Tubular Reactor 371 Design Equation for Systems of Variable Density 372 Design Equations ... FIVE Introduction to Reactor Design Fundamentals for Ideal Systems 260 Introduction 260 A General Approach 262 Ideal Isothermal Reactors 264 Numerical Methods for Reactor Systems Design 279 Reversible ... 434 Batch Reactor 457 Plug Flow Reactor 472 Autothermal Reactors 477 Conversion in Ammonia Synthesis 478 Two-Dimensional Tubular (Plug Flow) Reactor 492 Pressure Drop (∆P) in Tubular (Plug Flow) Reactors...

Ngày tải lên: 01/04/2014, 10:25

... NO 2 (4.1.9) NO + NO 3 4 2NO 2 (4.1.10) If one multiplies equation 4.1.8 by two and adds the result to equations 4.1.9 and 4.1.10, equation 4.1.7 is obtained. For mechanisms that are more complex ... combination of equations M and N, r = ^ [N 2 O 5 ] (O) (I) or Combination of equations H and J gives [NO 3 ] M = /c 2 [NO 2 ] + 2/c 3 [NO 2 ] (J) (K) This relation may now be substituted in equation ... 1965. B. References Pertinent to the Engineering or Reactor Design Aspects of Kinetics 1. R. Aris, Introduction to the Analysis of Chemical Reactors, Prentice-Hall, Englewood Cliffs, N.J., 1965. 2. ...

Ngày tải lên: 01/04/2014, 10:25

... catalyst is charged into a fixed- bed reactor. The reactor structure is designed in such a way that the reaction fluid is uniformly distributed over the catalyst bed with a low and uniform ... HCCO+O=HCO+CO CHEMICAL REACTIONS AND DESIGN OF CHEMICAL REACTORS 5 (a) Tubular reactor, plug flow (b) Tank reactor, mixed flow. The basic concepts of these reactors are shown in Figure 1.2 ... facilitate the generalized design strategy of reactors. The reactor types and applications are introduced in subsequent sections. 4.1.1 HOMOGENEOUS REACTORS Reactors which handle reacting...

Ngày tải lên: 01/04/2014, 10:29

... vented from the reactor while products accumulate in the solution. A type of continuous reactor with performance similar to a batch reactor is the plug-flow reactor, a tubular or pipeline reactor with ... either perfectly mixed tanks or packed bed and pipeline reactors with no mixing. The changes in conversion with reaction time or reactor length are described and the advantages and problems of ... with the optimal feed ratio, the optimal temperature, and the effect of reactor design on selectivity. The design of adiabatic reactors for reversible reactions presents many Copyright â 2003 by...

Ngày tải lên: 01/04/2014, 10:31

... for component A, Equation (1.6), reduces to dVaị dt ẳ R A V 1:21ị Together with similar equations for the other reactive components, Equation (1.21) constitutes the reactor design equation for an ... Three-Phase Reactors 412 11.2.1 Trickle -Bed Reactors 412 11.2.2 Gas-Fed Slurry Reactors 413 11.3 Moving Solids Reactors 413 11.3.1 Bubbling Fluidization 416 11.3.2 Fast Fluidization 417 11.3.3 Spouted Beds ... result. If local stoichiometry is preserved, no more than M reactor design equations need to be solved to determine all 68 CHEMICAL REACTOR DESIGN, OPTIMIZATION, AND SCALEUP follow first-order kinetics...

Ngày tải lên: 01/04/2014, 10:31

Ngày tải lên: 01/04/2014, 10:33

... Coupling of the Energy^Conservation Equation to the Mass^Conservation Equation In isothermal systems the general mass conservation±reaction rate expression of equation (1-15) is sucient to describe ... is available from equation (1-81), so substituting in equation (1-82) we have dC B =dtk 2 C B  k 1 C A0 expÀk 1 t1-83 For initial conditions C A  C A0 , as employed in equation (1-81), ... kinetics and reactor design / J.B. Butt. ± 2nd ed., rev. and expanded. p. cm. ± (Chemical industries ; v. 79) Includes index. ISBN 0±8247±7722±0 (alk. paper) 1. Chemical kinetics. 2. Chemical reactors....

Ngày tải lên: 01/04/2014, 10:37

Ngày tải lên: 02/04/2014, 15:50

Ngày tải lên: 29/06/2014, 00:20

Ngày tải lên: 05/09/2013, 16:11

Ngày tải lên: 18/12/2013, 09:19

... NG NGUY NGHIÊN CU NG DNG CÔNG NGH MBBR (MOVING BED BIOFILM REACTOR)  X C THI SN XUT BIA Chuyên ngành : Công ngh ng MSHV : ... system encountered many difficulties. This research was studied on application of Moving Bed Biofilm Reactor for brewing wastewater treatment, given more options for upgrading existing wastewater ... nh tính cn thit khi la ch  tài: “Nghiên cư ́ u ứng dụng công nghệ MBBR(Moving Bed Biofilm Reactor) để xử lý nước thải sản xuất bia”. 2. Tng quan 31 s c các vi...

Ngày tải lên: 26/02/2014, 13:08

... biofilm khác, vì vy nó tu kin thun li cho quá trình x Hình 2.8b. Anoxic reactor Hình 2.8a. Aerobic reactor 2. Tng quan 29 Hình 2.9. Các loại giá thể K1, K2, K3, Biofilm ... NG NGUY NGHIÊN CU NG DNG CÔNG NGH MBBR (MOVING BED BIOFILM REACTOR)  X C THI SN XUT BIA Chuyên ngành : Công ngh ng MSHV : ... Chuyên ngành : Công ngh Môi trng 1- TÊN  TÀI: Nghiên cu ng dng công ngh MBBR (Moving Bed Biofilm  x lc thi sn xut bia. 2- NHIM V LUN VN:  Lp mô hình nghiên...

Ngày tải lên: 20/03/2014, 03:21

... reactions. design calcula- tions for plug flow reactors in realistic typical situations (e.g., thermal cracking), fixed bed reactors, fluidized be'd reactor design, and multiphase reactor design. ... the Preliminary Design of Fixed Bed Reactors 11.4 Modeling of Fixed Bed Reactors Part 11 Pseudo-Homogeneous Models 11.5 The Basic OneDimensional models 11.5.a Model Equations E.rumple ... Model Equations E.rumple 11.5.~- I Culcu/anon of Pressure Drop m Packed Beds, 48 1 1 1.S.b Design of a Fixed Bed Reactor According to the One-Dimensional pseudo-Homogeneous Model 1 1.5.~...

Ngày tải lên: 01/04/2014, 10:25

Ngày tải lên: 01/04/2014, 10:30

... Nonisothermal Particles 223 Example 11.5.1.A Calculation of Pressure Drop in 510 Packed Beds 11.5.2 Design of a Fixed Bed Reactor According to the One- 510 Dimensional Pseudohomogeneous Model 11.5.3 ... First Runaway 519 Criterion of Van Welsenaere and Froment 11.5.4 The Multibed Adiabatic Reactor 522 11.5.5 Fixed Bed Reactors with Heat Exchange Between the 530 Feed and Effluent or Between ... The Effective Transport Concept 565 11.7.2 Continuity and Energy Equations 571 11.7.3 Design or Simulation of a Fixed Bed Reactor for 572 Catalytic Hydrocarbon Oxidation 11.7.4 An Equivalent...

Ngày tải lên: 01/04/2014, 10:31

... of reactor operations: batch operation (batch reactors) and steady continuous operation (flow reactors), shown schematically in Figure 2.1. In batch reactors, reactants are charged into the reactor ... the reactor; hence, the chemical reactions take place over time. In steady-flow reactors, reactants are continuously fed into the reactor, and products are continuously withdrawn from the reactor ... catalytic particles are required, a fluidized bed is used. In fluidized -bed reactors the reacting fluid mixed extensively, and a portion of it passes through the reactor in large bubbles with little contact...

Ngày tải lên: 01/04/2014, 10:36