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Important questions
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Unit 1
conservation of mass and energy
dimensional and unit consistency
single and multiple effect evaporation performance of evaporators and boiling point elevation
rare agitated film evaporator
UNIT 2
types and requirements-constant rate filtration,cetrifuge equpmnt
gravitational sedimentation of particles in a fluid
Stoke’s law, sedimentation of particles in gas-cyclones
unit 3
Rittinger’s, Bond’s and Kick’s laws for crushing
jaw crusher, gyratory crusher-crushing rolls ,grinders, hammer
unit 4
Contact equilibrium separation processes. gas-liquid and solid-liquid equilibrium, concentration relationships
basket extractor-extraction of fine material, Dorr agitator ,continuous leaching
decantation systems , extraction towers-washing
UNIT 5
Crystallizers-Tank-Agitated batchSwenson-Walker and Vacuum crystallizers-Distillation-Binary mixtures
Flash and differential distillation-Steam distillation Distillation equipmentConstruction and operation-Factors influencing the operation**Very important questions are bolded and may be asked based on this topic
PART-C
1.Compulsory Questions {a case study where the student will have to read and analyse the subject }mostly asked from unit 2, 5(OR) a situation given and you have to answer on your own
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Unit 1
conservation of mass and energy
dimensional and unit consistency
single and multiple effect evaporation performance of evaporators and boiling point elevation
rare agitated film evaporator
UNIT 2
types and requirements-constant rate filtration,cetrifuge equpmnt
gravitational sedimentation of particles in a fluid
Stoke’s law, sedimentation of particles in gas-cyclones
unit 3
Rittinger’s, Bond’s and Kick’s laws for crushing
jaw crusher, gyratory crusher-crushing rolls ,grinders, hammer
unit 4
Contact equilibrium separation processes. gas-liquid and solid-liquid equilibrium, concentration relationships
basket extractor-extraction of fine material, Dorr agitator ,continuous leaching
decantation systems , extraction towers-washing
UNIT 5
Crystallizers-Tank-Agitated batchSwenson-Walker and Vacuum crystallizers-Distillation-Binary mixtures**Very important questions are bolded and may be asked based on this topic
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*These questions are expected for the exams This may or may not be asked for exams All the best.... from admin Santhosh
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Unit operations in food processing –conservation of mass and energy – overall view of an
engineering process-dimensions and units – dimensional and unit consistency – dimensionless
ratios-evaporation – definition – liquid characteristics – single and multiple effect evaporation performance of evaporators and boiling point elevation – capacity – economy and heat balancetypes of evaporators – once through and circulation evaporators – short tube evaporators and long
tube evaporators – agitated film evaporator
UNIT II MECHANICAL SEPARATION
Filtration – definition –filter media – types and requirements-constant rate filtration – constant
pressure filtration – filter cake resistance-filtration equipment – rotary vacuum filter – filter presssedimentation – gravitational sedimentation of particles in a fluid – Stoke’s law, sedimentation of
particles in gas-cyclones – settling under sedimentation and gravitational sedimentation-centrifugal
separations – rate of separations – liquid – liquid separation – centrifuge equipment.
UNIT III SIZE Reduction
Size reduction – grinding and cutting – principles of comminuting – characteristics of comminuted
products – particle size distribution in comminuted products-energy and power requirements in
comminuting – crushing efficiency – Rittinger’s, Bond’s and Kick’s laws for crushing-size reduction
equipment – crushers – jaw crusher, gyratory crusher-crushing rolls – grinders – hammer mills –
rolling compression mills – attrition, rod, ball and tube mills – construction and operation.
UNIT IV CONTACT EQUILIBRIUM SEPARATION
Contact equilibrium separation processes – concentrations – gas-liquid and solid-liquid equilibrium
– equilibrium concentration relationships – operating conditions-calculation of separation in contact
– equilibrium processes-gas absorption – rate of gas absorption – stage – equilibrium gas –
absorption equipment-properties of tower packing – types – construction – flow through packed
towers-extraction – rate of extraction – stage equilibrium extraction-equipment for leaching coarse
solids – intermediate solids – basket extractor-extraction of fine material – Dorr agitator –
continuous leaching – decantation systems – extraction towers-washing – equipment
UNIT V CRYSTALLISATION AND DISTILLATION
Crystallization-Equilibrium –Rate of crystal growth stage-Equilibrium crystallization-CrystallizersEquipment-Classification- Construction and operation – Crystallizers-Tank-Agitated batchSwenson-Walker and Vacuum crystallizers-Distillation-Binary mixtures-Flash and differential
distillation-Steam distillation –Theory-Continuous distillation with rectification –Vacuum distillation –
Batch distillation-Operation and process-Advantages and limitation-Distillation equipmentConstruction and operation-Factors influencing the operation
UNIT I EVAPORATION AND CONCENTRATION
Unit operations in food processing –conservation of mass and energy – overall view of an
engineering process-dimensions and units – dimensional and unit consistency – dimensionless
ratios-evaporation – definition – liquid characteristics – single and multiple effect evaporation performance of evaporators and boiling point elevation – capacity – economy and heat balancetypes of evaporators – once through and circulation evaporators – short tube evaporators and long
tube evaporators – agitated film evaporator
UNIT II MECHANICAL SEPARATION
Filtration – definition –filter media – types and requirements-constant rate filtration – constant
pressure filtration – filter cake resistance-filtration equipment – rotary vacuum filter – filter presssedimentation – gravitational sedimentation of particles in a fluid – Stoke’s law, sedimentation of
particles in gas-cyclones – settling under sedimentation and gravitational sedimentation-centrifugal
separations – rate of separations – liquid – liquid separation – centrifuge equipment.
UNIT III SIZE Reduction
Size reduction – grinding and cutting – principles of comminuting – characteristics of comminuted
products – particle size distribution in comminuted products-energy and power requirements in
comminuting – crushing efficiency – Rittinger’s, Bond’s and Kick’s laws for crushing-size reduction
equipment – crushers – jaw crusher, gyratory crusher-crushing rolls – grinders – hammer mills –
rolling compression mills – attrition, rod, ball and tube mills – construction and operation.
UNIT IV CONTACT EQUILIBRIUM SEPARATION
Contact equilibrium separation processes – concentrations – gas-liquid and solid-liquid equilibrium
– equilibrium concentration relationships – operating conditions-calculation of separation in contact
– equilibrium processes-gas absorption – rate of gas absorption – stage – equilibrium gas –
absorption equipment-properties of tower packing – types – construction – flow through packed
towers-extraction – rate of extraction – stage equilibrium extraction-equipment for leaching coarse
solids – intermediate solids – basket extractor-extraction of fine material – Dorr agitator –
continuous leaching – decantation systems – extraction towers-washing – equipment
UNIT V CRYSTALLISATION AND DISTILLATION
Crystallization-Equilibrium –Rate of crystal growth stage-Equilibrium crystallization-CrystallizersEquipment-Classification- Construction and operation – Crystallizers-Tank-Agitated batchSwenson-Walker and Vacuum crystallizers-Distillation-Binary mixtures-Flash and differential
distillation-Steam distillation –Theory-Continuous distillation with rectification –Vacuum distillation –
Batch distillation-Operation and process-Advantages and limitation-Distillation equipmentConstruction and operation-Factors influencing the operation
