Knitted Wire Mesh Demister Pad for Gas–Liquid Separation

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A replacement with changed operating conditions needs a different review from a like-for-like spare.

1. 1.New equipment

   Provide

   Vessel drawing, installation space, process medium and design or operating data. Identify the required separation duty and allowable pressure drop.

   Confirm before ordering

   Finished pad specification, supports, component materials and supply scope against the equipment requirement.

2. 2.Replacement under the same duty

   Provide

   Existing drawing and pad specification, current operating data and permitted inspection photos. Identify any damage or fit differences.

   Confirm before ordering

   Drawing revision, measured fit, mesh construction and the parts to be retained or replaced. Matching outside dimensions alone is insufficient.

3. 3.Replacement after a process change

   Provide

   Previous and proposed operating conditions, the original pad specification and the observed carryover or pressure-drop issue.

   Confirm before ordering

   Whether the original configuration remains suitable. Resolve changed-duty requirements before approving a repeat order.

Describe the Operating Problem

These are possible review directions, not a diagnosis or instructions for opening operating equipment. Use available operating records and photos from permitted inspections.

APad outside diameter

Provide the finished pad diameter or length and width, and the mating vessel dimensions. Identify agreed clearances on the drawing.

BMesh-layer thickness

State the thickness of the knitted mesh bed separately from the grids and fixings.

CComplete assembly height

Confirm total occupied height, including grids, fixing projections and required installation clearance.

DUpper grid

Identify the required grid material and geometry, and whether it is included in the supply scope.

ELower grid

Identify the lower support arrangement and its interface with existing vessel supports.

FFixings and hold-downs

Confirm the required fixing parts, materials and drawing references; the illustration does not define an approved fastening design.

GSection layout

Agree the actual section layout and identification where a segmented pad is required. The illustrated number of sections is not a product specification.

HVessel access opening

Provide the clear access-opening dimensions and handling constraints so the proposed sections and grids can be checked for entry.

Read the Selection Parameters Together

A catalog mesh entry does not determine the finished pad. Review these inputs together; this guide does not prescribe a mesh style or calculate performance.

Wire diameter

Wire diameter affects the surface presented to droplets. Review it together with mesh construction and duty rather than treating it as a droplet-size rating.

Bulk density

Density describes mesh mass per bed volume. It helps distinguish pad constructions but does not independently establish collection efficiency.

Mesh-layer thickness

Thickness is a separate construction dimension. Confirm it with the mesh style and the space available for the complete assembly.

Gas velocity

Velocity links the process flow to the available pad area. Check the operating range with the selected construction instead of assuming a same-size pad suits every throughput.

Liquid load and condition

State the amount and nature of entrained liquid, including viscosity or known deposits where available. Drainage and fouling concerns belong in the duty review.