Question:
The filter press commonly used in oil mill is a:
The filter press commonly used in oil mill is a:
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Despite being discontinuous, the filter press is favored in oil mills because it is versatile, handles high solid loads, and produces very dry filter cakes.
Updated On: Jul 4, 2026
- Continuous type of pressure filter
- Continuous type of vacuum filter
- Discontinuous type of pressure filter
- Discontinuous type of vacuum filter
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The Correct Option is C
Solution and Explanation
Concept:
Filtration equipment is classified by the driving force (pressure/vacuum) and the mode of operation (continuous/batch).
• Pressure filters: Use pumps to push liquid through a medium.
• Vacuum filters: Use suction to pull liquid through a medium.
Step 1: Analyzing the Filter Press structure.
A plate-and-frame filter press consists of a series of plates and frames. The oil is pumped into the frames under high pressure.
Step 2: Identifying the mode of operation.
Once the frames are full of solid "filter cake," the process must be stopped. The press is opened, the cake is removed manually, and the press is reassembled. Because it requires periodic stops, it is a "discontinuous" or "batch" process.
Step 3: Final Classification.
Since it uses a pump (pressure) and is a batch process: It is a Discontinuous type of pressure filter. Final Answer: (C)
• Pressure filters: Use pumps to push liquid through a medium.
• Vacuum filters: Use suction to pull liquid through a medium.
Step 1: Analyzing the Filter Press structure.
A plate-and-frame filter press consists of a series of plates and frames. The oil is pumped into the frames under high pressure.
Step 2: Identifying the mode of operation.
Once the frames are full of solid "filter cake," the process must be stopped. The press is opened, the cake is removed manually, and the press is reassembled. Because it requires periodic stops, it is a "discontinuous" or "batch" process.
Step 3: Final Classification.
Since it uses a pump (pressure) and is a batch process: It is a Discontinuous type of pressure filter. Final Answer: (C)
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