Mash Filter Design and Operation Flashcards
(20 cards)
What is the tun diameter of the mash filter?
20 m (58 chambers)
The mash filter has a significantly larger diameter compared to lauter and mash tuns.
What is the grain bed loading for the mash filter?
30 kg/m²
This is much lower than the grain bed loading for lauter and mash tuns.
What is the cycle time for the mash filter?
110 min
This is faster compared to the cycle times of lauter and mash tuns.
How many brews per day can the mash filter produce?
13
This is more than the lauter tun and mash tun.
What milling system is used for the mash filter?
Hammer
This milling system allows for a finer grist.
What is the wort flow rate of the mash filter?
1,522.9 hL/h
This is significantly higher than both lauter and mash tuns.
What is the maximum limit of differential pressure (DP) for the mash filter?
0.3 bar
This is higher than the limits for lauter and mash tuns.
What is the filtration surface area for the mash filter?
330 m²
This is 6.6 times higher than that of the lauter tun.
What is the mash water ratio for the mash filter?
2.7 L/kg
This lower ratio may increase viscosity, affecting flow.
What is the mash temperature for the mash filter?
76 ˚C
This matches the temperature of the lautering process.
What is the grain bed depth for the mash filter?
0.05 m
This shallow depth contributes to improved flow rates.
How does the mash filter’s wort flow rate compare to the lauter tun?
Twice as fast
The mash filter is also four times faster than the mash tun.
What are the dimensions of the filter plates in the mash filter?
1.8 m x 2.0 m
These plates are used in conjunction with membrane plates.
What is the role of the flexible non-porous rubber membrane in the mash filter?
It inflates and deflates to control flow
It is connected to an air system for operation.
How is the flow regulated in the mash filter?
By modulating pump speed
This helps maintain the target flow rate.
What is the design limit for the inlet pressure of the mash filter?
0.5 bar
This is higher than the design limits for lauter and mash tuns.
Fill in the blank: The mash filter has a grain bed permeability of _______ compared to lauter tun.
1
The relatively low permeability impacts wort flow negatively.
True or False: The mash filter has a higher viscosity than the lauter tun.
True
Increased viscosity can hinder flow in the mash filter.
What type of cloth is used in the filter plates of the mash filter?
Polypropylene filter cloth
This cloth is crucial for the filtration process.
How is the hydraulic ram in the mash filter used?
Applies 120 bar to prevent leakage
Ensures operational integrity during filtration.
