Refinery analysers: one coalescing filter type for 16 sample systems
A refinery modernisation package included 16 process analysers with 12 × 57 mm sample filter elements. We proposed one stainless housing and one silica-bonded coalescing element as a functional alternative for all of them.
Starting point
In a refinery modernisation project, 16 analysers (gas chromatographs and other process analysers) were equipped with sample conditioning systems. Each system used a small coalescing filter with a 12 × 57 mm element, specified as a branded spare part.
Task
Offer a generic filter set with the same connection and element size, suitable for hot and partly wet samples, and keep the number of spare-part types on site as small as possible.
How we sized it
- 1
Standardise on one housing
RF-H-122 in stainless steel: 1/4″ NPT in/out, 1/4″ drain, 340 bar / 200 °C, element 12 × 57 mm – one housing type for all 16 sample systems.
- 2
Silica-bonded coalescer
RF-CS-12057-HE: borosilicate glass microfibre, silica-bonded, 99.99 % @ 0.01 µm. The silica binder tolerates high sample temperatures; the housing limit of 200 °C applies.
- 3
Particulate pre-stage where needed
Dirty taps get RF-H-126 with RF-P-12057-HE ahead of the coalescer, so solids do not load the coalescing element.
- 4
Define the service interval
Coalescing elements are changed every 3 months; one spare element per filter is kept on site.
Recommended configuration
Silica-bonded borosilicate microfibre, 99.99 % @ 0.01 µm.
Product details
Membrane separator as final liquid barrier, 150 bar / 100 °C.
Product detailsLimits & open points
- Functional alternative – fit is checked against element and connection dimensions; no identical-part claim.
- Element temperature capability does not raise the housing limit of 200 °C (seal-dependent).
- Coalescing elements are not cleanable and are changed every 3 months.
Result
One housing type and one element type for 16 analysers – a simple spare-part list for maintenance, with generic RF article numbers instead of project-specific branded spares.
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