φ80mm SS316L Sintered Porous Filter Cylinder for Decarburization Filtration
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China [CN] φ80mm SS316L Sintered Porous Filter Cylinder for Decarburization Filtration
TOPTITECH’s φ80mm SS316L Sintered Porous Filter Cylinder for Decarburization Filtration is a high-performance rigid porous metal element engineered for critical solid-gas separation in elevated-temperature processes. This cylinder, constructed from316L stainless steel powder, achieves consistent porosity and micron-grade filtration precision through controlled sintering under a vacuum atmosphere. Its monolithic sintered structure delivers exceptional high-temperature compressive strength, intergranular corrosion resistance, and thermal shock stability, enabling reliable operation in environments where polymeric or fibrous media would degrade.
In decarburization and catalyst recovery applications, this filter cylinder ensures maximum particulate retention and process gas purity. The precisely engineered pore structure facilitates high initial permeability while providing surface-type filtration, which supports efficient cake formation and reliable cleaning via back-pulse regeneration. Its robust design maintains dimensional stability under cyclic thermal and pressure loads, minimizing downtime for maintenance. The unit's consistent performance directly extends catalyst service life, reduces hydrocarbon carryover, and lowers total operational costs through repeated regeneration cycles without media migration or structural fatigue.
Specifications
Material: SS316L
Diameter: 80mm
Length: 325mm
Pore size: 5um
Technique: Sintering
Features
Engineered Pore Structure & Fidelity
The cylinder's porosity is engineered via precisely graded 316L powder and diffusion sintering, yielding a rigid, interconnected pore network. This ensures absolute filtration rated from 5 to 40 microns with consistent bubble point, preventing fine catalyst or carbon dust bleed-through in decarburization loops.
Superior High-Temperature Structural Integrity
Its monolithic sintered matrix maintains dimensional stability and compressive strength at continuous operating temperatures up to 480°C. This prevents creep deformation or collapse under cyclic thermal loads and system back-pulse pressures.
Corrosion & Oxidation Resistance
The high-chromium, low-carbon 316L alloy, sintered in a reducing atmosphere, provides exceptional resistance to intergranular corrosion and oxidation. This ensures longevity in process streams containing hydrogen, steam, and hydrocarbons at elevated temperatures.
Efficient Regeneration & Long Service Life
The surface-type filtration mechanism facilitates rapid cake formation and clean release. The element withstands over 10,000 reverse-flow back-pulse cleaning cycles without media fatigue or pore plugging, dramatically reducing replacement frequency and total ownership cost.
High Permeability with Low Initial Pressure Drop
Optimized pore geometry and uniform porosity distribution achieve high gas permeability, resulting in a low initial pressure drop (typically below 3 kPa at nominal flow). This minimizes energy consumption for compression while maintaining high dirt-holding capacity.
Robust Construction for Critical Service
Manufactured via cold isostatic pressing and high-temperature sintering, the cylinder exhibits no welds or seams in the filter medium. This eliminates potential weak points, ensuring reliability in high-pressure (up to 6.9 MPa) and high-vibration decarburization reactor environments.
Applications
Reactor Effluent Guard Filter
This cylinder installs directly within or downstream of a hydrocracker or hydrotreater's reactor outlet vessel. It operates under full system pressure and temperature to perform primary filtration, capturing entrained catalyst fines and coke particles from the hot, hydrogen-rich process stream before it enters downstream heat exchangers.
Catalyst Bed Support and Retention Media
Multiple filter cylinders are deployed in parallel within a dedicated catalyst retention vessel. They function as a mechanical barrier, preventing the migration of catalyst particles from the main reactor bed during normal operation, upsets, or during reactor unloading procedures, ensuring catalyst inventory control.
Hot Hydrogen Regeneration Cycle Component
During catalyst regeneration cycles, the filter assembly remains in service. It withstands the switch from a hydrocarbon-rich stream to hot hydrogen gas used for coke burn-off, continuously filtering the regeneration gas to remove dislodged particulate matter and protect the compressor recirculation loop.
High-Pressure Back-Pulse System Core Element
Integrated into a automated back-pulse skid, this filter is subjected to short, high-velocity bursts of high-pressure nitrogen or clean process gas. This discrete PLC-controlled sequence fractures and dislodges the filter cake, discharging the accumulated solids into a dedicated blowdown vessel for periodic removal.
Protection for Centrifugal Recycle Gas Compressors
Installed on the suction side of the hydrogen recycle compressor, the filter cartridge provides final particulate removal. This critical application prevents erosive wear on compressor impellers and fouling of intermediate coolers, directly supporting sustained compressor efficiency and extended run lengths.
Fixed-Bed Reactor Feed Polishing Filter
In processes such as diesel hydrotreating, this element serves as a final polishing stage for the combined feed (hydrocarbon + hydrogen) entering the fixed-bed reactor. It safeguards the primary catalyst bed from upstream pipe scale or corrosion products that could otherwise lead to increased pressure drop and channeling.
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