Pure SIC Ceramic Filter Membrane Industry Solutions and Applications
Introduction
Silicon carbide (SiC) ceramic membranes are setting new standards for industrial filtration. Their unmatched thermal stability, chemical resistance, and hydrophilic properties make them ideal for challenging applications. Leveraging over 99.5% pure SiC with no sintering additives, these membranes provide long-term durability across high-temperature and corrosive environments. Explore our ceramic injection molding services and advanced ceramic membrane products.
SiC Ceramic Membrane Solutions for Key Industrial Applications
Flue Gas Filtration and Desulfurization SiC membranes offer durable, high-temperature resistance for removing particulates, heavy metals, and acid gases from industrial flue gases above 1000°C. This ensures compliance with environmental standards and reliable system operation.
Gas Purification Processes In natural gas and biogas applications, SiC ceramic membranes efficiently eliminate tars, dust, and impurities. The result is a higher purity gas output and more stable downstream equipment performance.
Gasification and Pyrolysis Gas Treatment For syngas cleanup in biomass and waste gasification plants, robust SiC filters effectively remove ash and contaminants. Their resistance to high temperature and fouling improves energy conversion efficiency.
Molten Salt and Heat Transfer Fluid Filtration In concentrated solar power systems, SiC membranes prevent clogging and degradation by filtering molten salts and heat transfer fluids. This enhances plant uptime and component longevity.
Hydrogen Production and Purification Pure SiC membranes support high-temperature hydrogen production systems. Their excellent chemical stability and permeability enable reliable gas purification and consistent operation under aggressive conditions.
Material Performance Highlights of Pure SiC Membranes
SiC membranes are sintered at 2300°C using a solid–gas–solid phase transition that forms robust necks between particles and yields an open porosity >45%. Combined with SiC’s natural hydrophilicity (contact angle ~0.3°), this leads to extremely high water flux—up to 3000 LMH under 1 bar pressure at 20°C—3–5 times higher than typical ceramic membranes.
They maintain a strong negative surface charge across a wide pH range (isoelectric point ~pH 3), reducing fouling even under harsh chemical conditions. Compatible with pH ranges of 0–14, they also withstand strong oxidants, including ozone and hydroxyl radicals, making them ideal for aggressive cleaning processes.
Structural & Technical Specifications
Specification | Ø40mm / 37ch | Ø30mm / 19ch | Ø51.5mm / 121ch |
|---|---|---|---|
Length | 1200mm | 1200mm | 1200mm |
Channel Ø | 4mm | 4mm | 3mm |
Filtration Area | 0.56㎡ | 0.29㎡ | 1.44㎡ |
Weight | 1.9kg | 1.1kg | 3.9kg |
Composition | SiC > 99% | SiC > 99% | SiC > 99% |
Porosity | >45% | >45% | >45% |
Pore Size | 40nm–2μm | 40nm–2μm | 40nm–2μm |
Pure Water Flux | 2500–3000 LMH | 2500–3000 LMH | 2500–3000 LMH |
pH Range | 0–14 | 0–14 | 0–14 |
Operating Temp | 1–800°C (Gas) | 1–800°C (Gas) | 1–800°C (Gas) |
Operating Press. | 1–5 bar | 1–5 bar | 1–5 bar |
Structural Integration and Module Installation
Neway’s integrated pure SiC membranes fuse support and separation layers in a single sintering step. This design improves durability and resists delamination, enabling service life up to 15 years. The structure suits high-pressure backwashing and significantly reduces membrane fouling risk.
Modules are available in single or multi-core configurations using steel, UPVC, or composite housings. Multichannel modules accommodate up to 121 membranes. Installation requires careful handling due to ceramic brittleness, and ergonomic design is essential for long-term maintenance efficiency.
Key Advantages
High flux and excellent shear resistance
Chemically stable from pH 0 to 14
Withstands thermal cycling up to 800°C
Hydrophilic yet oil-repellent for multiphase separation
Resistant to mechanical wear and backwash stress
Excellent compatibility with oxidative cleaning
Application Scenarios
SiC membranes have proven reliability in:
Oil-water separation systems
Wastewater and sludge treatment
Catalysis and chemical process filtration
Acid/base recovery in industrial cycles
Seawater and drinking water pre-filtration
Mining water recycling systems
Food and beverage clarification processes
Conclusion
Pure SiC ceramic membranes offer outstanding performance for industries requiring durability, extreme chemical resistance, and ultrafiltration under pressure. With advanced manufacturing and system integration from Neway, these solutions redefine what’s possible in ceramic membrane filtration.
For more insights on advanced ceramic processing technologies or to consult on integration into your system, contact our engineering team.
