Wedge Wire Screens
We are working exclusively with Panapac Technologies, who has outsource manufacturing facilities in Europe manufactures reactor internals using Wedge Wire Screen (V-wirescreens). Such a screen consists of surface profiles is controlled very accurately, as it forms the continuous slot opening (aperture) through which the process liquid or gas flows and by which the media (catalyst or resin) is retained in its position.
Compared with conventional wire mesh internals, the wedge wire reactor internals have the following advantages :
Non-Clogging
The continuous slot opening formed by the triangularshaped (‘V’) surface wires ensures a two-point contact between particles and the slot, which minimises clogging.
High-Precision Slot Sizes
Precise slow size are avaiilable to meet customer’s requirements. Slot openings down to 25μm.
Low Pressure Drop and High Open Area
To optimize your process output.
Smooth Screen Interface
The low friction between the screen and expensive medium is a result of the smooth continuous slot openings, which run in one direction allowing the media to move in that direction with a low friction force.
All these advantages result in a low maintenance cost and a minimal operational cost for the petrochemical and refining plants.
Panapac Technologies with his european counter part manufacturing facility provide many different profiles available in most stainless steel alloys, Duplex and Super Duplex alloys, Inconel 600, Titanium, Hastelloy C-276, AISI 310, 347, etc.
For available profiles and materials, please refer to our website.
Panapac Technologies wedge wire reactor internals are commonly found in the following processes :
Refining
- Hydrotreating
- Hydrocracking
- Hydrodesulphurisation(HDS)
- Molecular Sieve
- Sulphur Recovery Units
- Alkylation
- Continuous Catalyst Regeneration(CCR)
Petrochemical
- Purified Terephthalic Acid(PTA)
- Styrene Monomer Dehydrogenation
- Ammonia Conversion
- Mercury Removal
- Sulphur Recovery
- Ethylene
- Merox
- Gas Dehydration
Natural Gas
- Molecular Sieves(Hydrogen)
- Activated Carbon
- Silica Gel
- Amine
- Mercury Removal
Panapac Technologies has been working with world Process Licensors including the following :
- Shell Global Solutions (SGS)
- UOP
- IFP / Axens
- Haldor Topsoe (HTAS)
- ABB Lummus
- Uhde
- Thyssenkrupp Industrial Solutions AG
- Snamprogretti
- Air Products
- Chevron
- BOC
- Sasol
Wedge Wire Advantages
Needless to say that the maintenance cost and risk of defects need to be minimised in refining and petrochemical applications.
Wedge wire holds the advantages that have a larger return on investment than any other filter medium :
- Strong mechanical construction
- Non-clogging surface
- No maintenance or replacement costs
Our European Manufacturing plant is OEM to major feed filter manufacturing company - We supplied original spares
Feedstock Filtration
Wedge wire screen elements are employed in this filtration system to remove contaminants such as coke particles and scale rust from sour water, reactor feeds and hydrocracker feeds.
These contaminants from process equipment and pipelines lead to fouling of the catalyst beds.
Screen elements will require backwashing to remove the buildup of folter cake.
Other applicaions in your plant
Wedge wire screens are used in Ion Exchange, Water Demineralisers and Softeners, Condensate Plishers, Sand Filters for media retention and thus eliminating the migration of expensive resin out of the vessel.
Technical Information
The table below list the most commonly used STPL surface and support profiles used in the refining and petrochemical industry.
Quality Assurance
- Drawing for Approval
- Design Calculations
-Mechanical strength of screen internals
-Recommended quantity and size of support beams - Mill Certificates
- Slot Opening Reports
- Final Inspection Reports
- WPS and PQR
- PMI Reports (at request))
- Dye Penetrant