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Questions and Answers
What is the primary principle behind mechanical separations?
What is the primary principle behind mechanical separations?
- Electromagnetic interactions between particles
- Chemical reactions between particles
- Physical differences between particles (correct)
- Nuclear reactions between particles
What is the main purpose of baffles in a gravity settling chamber?
What is the main purpose of baffles in a gravity settling chamber?
- To collect dust particles
- To reduce the cross-sectional area of the chamber
- To spread the incoming flow evenly across the settling chamber (correct)
- To increase the gas velocity inside the chamber
What type of mixtures are mechanical separations applicable to?
What type of mixtures are mechanical separations applicable to?
- Heterogenous mixtures (correct)
- Suspensions
- Homogenous solutions
- Emulsions
What is the effect of reducing the gas/fluid velocity in a gravity settling chamber?
What is the effect of reducing the gas/fluid velocity in a gravity settling chamber?
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What would be the result of not using baffles in a gravity settling chamber?
What would be the result of not using baffles in a gravity settling chamber?
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Study Notes
Mechanical Separations
- Applicable to heterogeneous mixtures, not homogeneous solutions
- Based on physical differences between particles, including:
- Size
- Shape
- Density
- Used to separate:
- Solids from gases
- Liquid drops from gases
- Solids from solids
- Solids from liquids
Gravity Settling Chamber
- Simplest type of dust collection equipment
- Consists of a chamber with reduced gas/fluid velocity to enable dust particles to settle out via gravity
- Key features:
- Large cross-sectional area compared to ducts
- Baffles used to spread incoming flow evenly across the settling chamber
- Importance of baffles:
- Prevents poor particle collection due to uneven flow
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