Sintered Metal Filters: Core Value & Applications in Petrochemical Industry

The core value of sintered metal filters in the petrochemical industry lies in high temperature and pressure resistance, corrosion resistance, stable precision, and repeated regeneration. They are mainly used in key processes such as catalyst recovery, high-temperature oil/gas/melt filtration, gas purification, and amine liquid/solvent refining, significantly reducing operation and maintenance costs, extending equipment service life, and ensuring product purity.

I. Product Features

• High Temperature Resistance: Long-term service at -200℃ to 800℃, short-term up to 1000℃; thermal shock resistant, not easy to crack.

• High Pressure Resistance: Withstands pressure difference up to 5MPa; rigid structure, no deformation or leakage.

• Corrosion Resistance: Made of 316L, titanium, Hastelloy ^® and other materials; resistant to strong acids, alkalis, hydrogen sulfide, and organic solvents.

• Stable Precision: Controllable pore size from 0.1 to 100μm; uniform porosity, high interception efficiency (up to 99.9%).

• High Mechanical Strength: Manufactured by metal powder metallurgy sintering; monolithic rigid structure, impact and fatigue resistant.

• Renewable: Performance recovery ≥90% via backwashing, ultrasonic cleaning, or CIP online cleaning; long service life.

• All-Metal Structure: No fiber shedding, no medium migration, avoiding secondary pollution.

II. Typical Petrochemical Applications

1. Fluid Catalytic Cracking (FCC/RFCC)

Working Condition: 350℃, 2–5MPa; slurry oil containing catalyst particles (10–100μm).

Function: Catalyst recovery and slurry oil purification to prevent clogging of heat exchangers and furnaces.

2. Hydrogenation Units (Hydrocracking / Hydrotreating)

Working Condition: 200–450℃, 10–20MPa; feed oil or recycle hydrogen containing trace solids.

Function: Protect catalysts, remove mechanical impurities, and extend catalyst service life.

3. Catalytic Reforming (CCR)

Working Condition: ~170℃, 0.6MPa; nitrogen containing trace catalyst solids.

Function: Dust collector assisting catalyst circulation system to remove broken catalysts and recover them.

4. Polymer Production (PE/PP/PET, etc.)

Working Condition: 200–300℃, 5–15MPa; high-viscosity melt containing gels/carbon black.

Function: Precision melt filtration, gel/impurity removal, ensuring product quality.

5. Gas Purification (Natural Gas / Dry Gas / Flue Gas)

Working Condition: Ambient temperature to 400℃, 1–10MPa; containing dust, liquid droplets, and mist.

Function: Remove H₂S/CO₂, purify fuel gas, protect compressors and turbines.

6.Amine Liquid / Solvent Regeneration (Desulfurization / Decarbonization)

Working Condition: 80–150℃, 1–3MPa; amine liquid containing solid particles and degradation products.

Function: Amine liquid refining, impurity removal, preventing foaming and reducing corrosion.

7. Crude Oil / Product Oil Filtration

Working Condition: Ambient temperature to 150℃, 1–5MPa; containing sediment, rust, and asphaltenes.

Function: Feedstock pretreatment, protect transmission/measuring equipment, improve oil purity.

III. Core Advantages

1. Adapt to Extreme Conditions: Traditional filter bags/paper cartridges are prone to damage and deformation under high temperature and pressure, while sintered metal filters operate stably for a long time and reduce unplanned downtime.

2. Efficient Catalyst Recovery: Catalyst recovery rate ≥98% for FCC slurry oil and hydrogenation catalysts, reducing catalyst consumption and significant cost savings.

3. Extend Equipment Life: Remove hard particles, reduce wear of pumps, heat exchangers and reactors; maintenance cycles extended by 3–6 times.

4. Lower O&M Costs: Reusable for over 100 times, no frequent filter replacement; solid waste reduced by 80%, labor and spare parts costs greatly reduced.

5. Guarantee Product Purity: All-metal design with no fiber shedding, stable filtration precision, avoiding secondary pollution, meeting requirements of high-end products (e.g., food-grade white oil, medical-grade polymers).

6. Safety and Environmental Protection: CIP online cleaning reduces personnel exposure to toxic media, lowers VOC emissions, and complies with environmental regulations.

Sintered metal filters are the preferred filtration solution for harsh petrochemical conditions, especially suitable for high-temperature, high-pressure, high-corrosion scenarios requiring precision filtration and long-term stable operation, with remarkable comprehensive economic benefits.