3rd Sem, B.E/B.Tech, CH, Syllabus

Mechanical Operations Syllabus for VTU BE/B.Tech CBCS 2015-16

Mechanical Operations Syllabus for VTU BE/B.Tech Chemical Engineering third sem complete syllabus covered here. This will help you understand complete curriculum along with details such as exam marks and duration. The details are as follows.

Subject Code  15CH34 IA Marks 20
Number of Lecture Hours/Week 04 Exam Marks 80
Total Number of Lecture Hours 50 Exam Hours 3

CREDITS – 04

Course Objectives: This course will enable students to;

  • Study different properties of particulate solids, handling and mixing of solid particles.
  • Study principles of communition and different types of equipment for size reduction like crushers, grinders etc.
  • Understand mechanical separation aspect such as screening, filtration, sedimentation, transportation of solids etc.
  • Understand energy requirements in solids handling, agitation and mixing, solid conveying and storage.
  • Hands on experience of working by conducting experiments on some of the basic unit operations such as separation and size reduction.
  • Present seminar on current separation techniques and submit the report on the same.
Content Contact Hours Blooms Taxonomy
Module -1                                                                                                                                                      _
PARTICLE TECHNOLOGY: Particle shape, particle size, different ways of expression of particle size, shape factor, sphericity, particle size analysis, screens – ideal and actual screens, Differential and cumulative size analysis, effectiveness of screen, Specific surface of a mixture of particles, Number of particles in a mixture, standard screens, Industrial screening equipment, Motion of screen, Grizzly, Gyratory screen, Vibrating screen, Trammels, sub sieve analysis – Air permeability 10 Hours L-1, L-2, L- 3 .
Module -2 _

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10 Hours L-1, L-2, L- 3
Module -3 _
FLOW OF FLUID PAST IMMERSED BODIES: Fluidization, conditions for fluidization, Minimum fluidization velocity, Types of fluidization, Applications of fluidization, Slurry Transport, Pneumatic conveying.

MOTION OF PARTICLES THROUGH FLUIDS: Mechanics of particle motion, Equation for one dimensional motion of particles through a fluid in gravitational and centrifugal field, Terminal velocity, Drag coefficient, Motion of spherical particles in Stoke’s region, Newton’s region, and Intermediate region, Criterion for settling regime, Hindered settling, Modification of equation for hindered settling, Centrifugal separators, Cyclones and Hydro cyclones.

10 Hours L-1, L-2, L- 3

L-1, L-2, L- 3

Module -4 _
SEDIMENTATION: Batch settling test, Application of batch settling test to design of a continuous thickener, Coe and Clevenger theory, Kynch theory, thickener design, Determination of thickener area.

FILTRATION: Introduction, Classification of filtration, Cake filtration, Clarification, batch and continuous filtration, Pressure and vacuum filtration, Constant rate filtration and cake filtration, Characteristics of filter media, Industrial filters, Sand filter, Filter press, Leaf filter, Rotary drum filter, Horizontal belt filter, Bag filter, Centrifugal filtration – Suspended batch centrifuge, Filter aids, Application of filter aids, Principles of cake filtration, Modification of Kozeny – Carmen for filtration.

10 Hours L-1, L-2, L- 3

L-1, L-2, L- 3

Module -5 _
AGITATION AND MIXING: Application of agitation, Agitation equipment, Types of impellers – Propellers, Paddles and Turbines, Flow patterns in agitated vessels, Prevention of swirling, Standard turbine design, Mixing of solids, Types of mixers – Change can mixers, Muller mixers, Mixing index, Ribbon blender, Internal screw mixer, Tumbling mixer.

SAMPLING, STORAGE AND CONVEYING OF SOLIDS: Sampling of solids, Storage of solids, Open and closed storage, Bulk and bin storage, Conveyors – Belt conveyers, Bucket conveyor, Screw conveyor.

MISCELLANEOUS SEPARATION: Magnetic separation, Electrostatic separation, Jigging, Heavy media separation, Froth floatation process, Floatation cells, Typical floatation circuits, Size enlargement – Flocculation, Briquetting, Granulation (only principle and equipment).

10 Hours L-1, L-2, L- 3

L-1, L-2, L- 3

L-1, L-2, L- 3

COURSE OUTCOMES: The students are expected to do the following

  • Classify and suggest different type of separation processes required for the feed material.
  • Suggest different types of size reduction methods such as crushing, grinding milling depending on the type and size of the material.
  • Calculate the power requirements for different type of mechanical operations.
  • Select different type of conveying methods.
  • Hands on experience on various separation and size reduction experiments.

GRADUATE ATTRIBUTES:

  • Problem analysis.
  • Design/development of solutions.

QUESTION PAPER PATTERN:

  • The question paper will have ten questions. Each full is for 16 marks. There will be two full questions (with a maximum of four sub questions) from each module. Each full question will have sub questions covering all the topics under a module. The students will have to answer five full questions, selecting one full question from each module.

TEXT BOOKS:

  • McCabe, W.L., et.al., “Unit Operations in Chemical Engineering”, 5th edn., Mc Graw Hill International, Singapore, 2000
  • Badger W.L. and Banchero J.T., “Introduction to Chemical Engineering”, 3rd edn. Tata McGraw Hill International Edition, Singapore , 1999
  • Coulson J.H. and Richardson J.F., “Coulson and Richardson’s Chemical Engineering”, Vol-II Particle Technology and Separation Process, 6th edn., Asian Books (p) Ltd., New Delhi, 1998

REFERENCE BOOKS:

  • Brown G.G., et.al., “Unit Operations”, I edn., CBS Publisher, New Delhi, 1995
  • Foust A.S., et.al., “Principles of Unit Operations”, III edn., John Wiley and Sons, New York, 1997

For all other BE/B.Tech 3rd Sem Subject syllabus do follow VTU 3rd Sem BE / B.Tech Syllabus CBCS (2015-16) Scheme for Chemical Engineering Group.

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