Filter Basics
What is a filter?
Name three different kinds of filters.
Pressure vs. Vacuum Filters
Describe the difference between a pressure vs vacuum filter
Macro vs. Micro
How many microns does it take for something to be considered a "macro particle?"
Wovens vs. Nonwovens
Which type is most prevalent in the filtration industry?
Adsorption vs. Absoption
Name a pourous medium typically used for adsorption.
What is Filter media?
Name 3 examples of Filter Media.
Surface vs Depth Filter
Describe the difference between a surface vs. a depth filter. Give examples for both.
Ultra vs. Nano
Which is smaller? Give an example of something Ultra and Nano-sized
Wetlaid
Explain the wetlaid process, and give an example.
Resistance vs. Pressure Drop
Using three arrows, describe the proportionality of resistance, pressure drop, and flow rate.
What is Upstream vs. Downstream?
In filtration, we also use "discharge" and "input" sides. Which refers to upstream/downstream?
Continuous vs. Batch Filters
Describe both. Which kind of filter requires no interruption of the process?
Micro vs. Ultra
Is a virus filtration micro or ultra?
Meltblown
Is meltblown a process for organic or synthetic fibers?
Tortuosity
Give an example of a material with high and low tortuosity.
Filtrate vs. Retentate?
Give an example of when you'd want to keep the filtrate, retentate.
Dead End Filtration vs. Cross Flow
Describe both, which is the more conventional approach?
Smallest to Largest!
Sort: Micro, Ultra, macro, and Nano
Spunbond
Describe the process and give an example of a real-world product that uses this technology?
Permeability, Porosity, Tortuosity
Describe Permeability, Porosity, and Tortuosity along with their relationship (proportional) to each other.
TIME CHALLENGE (30 sec)
Draw a filtration process and diagram: 1. filter, 2. upstream and downstream, 3. filtrate and retentate.
TIME CHALLENGE (30 sec)
Diagram an air cabin filter and label the following: Pressure/Vacuum, Surface/Depth, Batch/Continuous, Dead End/Surface.
Most MERV numbers (1-10 especially) fit which size classification?
HOT SEAT
Which company owns ForceSpinning Technology?
TIME CHALLENGE (30 Secs)
Laminar vs Turbulent flow. Using these filtration terms, sell me on a product that will take my laminar flow and turn it into a turbulent flow.