Moore filter classification: In industrial filtration terminology, a Moore filter is classified as which type of filter?

Difficulty: Medium

Correct Answer: Leaf filter

Explanation:

Introduction / Context:Specialised filter names (e.g., Oliver, Moore, Kelly) often indicate the mechanical layout or vendor lineage. Recognising the generic class behind a trade or legacy name helps engineers interpret legacy documentation and specify equivalent equipment during revamps or replacements.

Given Data / Assumptions:

  • The question references “Moore filter” as used in classic chemical engineering texts.
  • We map it to its generic category.

Concept / Approach:In conventional classifications, the Moore filter is referenced as a leaf-type filter: an assembly of perforated leaves covered with filter medium, connected to a common manifold, typically operated under vacuum for batch or semi-continuous cake formation and discharge. While rotary drum/disc filters are also vacuum devices, the Moore designation historically correlates with leaf configurations rather than a rotating drum or disc format, and not with plate-and-frame presses or granular sand filters.

Step-by-Step Solution:

Identify Moore as a legacy name tied to leaf constructions.Differentiate from rotary drum/disc and plate-and-frame geometries.Select “Leaf filter.”

Verification / Alternative check:Older equipment catalogs and unit operations texts list Moore under leaf/vacuum leaf filters, distinct from Oliver rotary drums and standard presses.

Why Other Options Are Wrong:

  • Filter press: plate-and-frame pressure, not Moore’s typical configuration.
  • Rotary vacuum filter: a different rotating geometry (Oliver/disc types).
  • Sand filter/centrifugal screen: different driving forces and media.

Common Pitfalls:Assuming any vacuum filter is rotary; many are stationary leaf assemblies.

Final Answer:Leaf filter

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