tubular fixed bed reactor design

Ngày tải lên: 05/09/2013, 16:11

... 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 ... 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 ... 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 ... length of the reactor for its detection. 4. Feed temperature is a very important design parameter in tubular reactors. A low feed temperature results in low reaction rates. So a long reactor is ... 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

... 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 ... Selectivity 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 ... 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...

Ngày tải lên: 01/04/2014, 10:25

... 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. ... fertile environment for research and textbook writing in the area of chemical kinetics and reactor design. The text by O. A. Hougen and K. M. Watson represents a classic pioneering effort to ... 1974. 3.2.2.1 General Reactor Types. In planning ex- periments the chemist is most apt to think in terms of closed systems and has traditionally used some form of batch reactor. The chemical engineer,...

Ngày tải lên: 01/04/2014, 10:25

... 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 ... 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 ... operating considerations. Reactors of this type can be explained typically by tubular and stirred tank categories. 4.1.1.1 Tubular Reactors Figure 4.1 shows tubular reactors and their operational...

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 ... 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 ... the design need not be limited to the same type of reactor. Data taken in a stirred reactor and manipulated to get intrinsic kinetic parameters could be used to estimate the performance of a tubular...

Ngày tải lên: 01/04/2014, 10:31

... a constant-pressure reactor) , V(t) Variable cross section, A c (z) Fed batch reactors, Q in 6ẳ 0 Transpired wall reactors Nonideal batch reactors may have spatial variations in concentration Nonideal tubular reactors ... 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 ... stirred tanks (but not tubular reactors). This means that the production-scale reactor will have the same shape as the pilot-scale reactor. All linear dimensions such as reactor diameter, impeller...

Ngày tải lên: 01/04/2014, 10:31

Ngày tải lên: 01/04/2014, 10:33

... 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. ... pro- blems that arise during the development and implementation of procedures for chemical reactor and process design on a large scale. If we must give names to these two extremes, we might call the ... related topics of interest are given by Froment and Bischo (G.F. Froment and K.B. Bischo, Chemical Reactor Design and Analysis, John Wiley, New York, 1979) and in a review by Ray [W.H. Ray, J. Macromolec....

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. ... Fundamental Insight 11.3 Factors Involved in the Preliminary Design of Fixed Bed Reactors 11.4 Modeling of Fixed Bed Reactors Part 11 Pseudo-Homogeneous Models 11.5 The Basic OneDimensional ... 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 ... 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 One-Dimensional...

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