Particle and Fluid Particle Processing — Summer 2022

Write names of different solid-fluid reactors.

State classification of solid-fluid operations.

Explain various types of fluidization in detail.

List six applications of crystallization operation.

What are the various types of mechanical impellers? Write two applications of each.

With neat diagram explain mechanism of crystal growth in detail.

With neat diagram explain drying rate curve in detail.

What are kneaders?

What is function of filter aids? State four examples of filter aids.

With neat diagram explain batch sedimentation test in detail.

Enlist six types of conveyers.

Draw a labeled diagram of Swenson-walker crystallizer.

With neat diagram explain construction and working of Bollman extractor used for leaching operation.

State important parameters affecting leaching.

With neat diagram explain construction and working of tray drier.

Aplate and frame filter press filtering a slurry, gave total of 25 m3 of filtrate in 30 minutes and 35 m3 of filtrate in 60 minutes, when filtration was stopped. Estimate the washing time in minutes if 10m3of washed water are used. The resistance of filter cloth is neglected and a constant pressure is used throughout.

Explain in brief about growth of crystals.

Write a short note on hydraulic transport.

With neat diagram explain construction and working of rotary drum vacuum filter.

State names of three mechanism of filtration.

Write in brief about intensive mixers.

Explain in detail about scale up of agitated vessel.

List out important applications of fluidization in chemical industries.

A 100 Kg batch of granular solids containing 30% moisture is to be dried in a tray dryer is dried to 16% moisture by passing a current of air at 350K across its surface at velocity of 1.8 m/sec. If constant rate of drying under these conditions is 0.7x10-3 Kg/m2 Sec. Drying surface is 0.03 m2/Kg of dry weight and critical moisture content is 15% Calculate total drying time.

Explain in detail about slurry transportation.