1. Basic Working Principle

An industrial gas filter works by forcing gas to pass through a filtering element that traps unwanted particles while allowing clean gas to flow downstream.

Typical process:

1. Gas enters the filterinlet

2. Flow direction slows and changes

3. Solid contaminants (dust, rust, scale, oil mist) are captured

4. Clean gas exits to protect downstream equipment

2. Key Components and Their Roles

① Filter Housing

• Holds the filter element

• Designed to withstand system pressure and temperature

• Directs gas flow for effective filtration

② Filter Element (Core of Performance)

Common types:

• Mesh / screen → coarse particles

• Sintered metal → fine particles, long life

• Paper or fiber cartridge → dry, clean gas

• Coalescing element → oil mist & liquid droplets

✔ The smaller the micron rating, the finer the filtration.

③ Drain System (if applicable)

• Removes collected liquids (oil, condensate)

• Can be manual or automatic

• Prevents re-contamination of gas flow

3. What Makes an Industrial Filter Work Well?

1️⃣ Proper Filtration Accuracy

• Match the micron rating to system needs

  • Burner systems: typically 5–50 μm

  • Sensitive valves & regulators: ≤5 μm

2️⃣ Correct Flow Capacity

• Filter must handle maximum gas flow

• Undersized filters cause:

  • Pressure drop

  • Flame instability

  • Reduced burner efficiency

3️⃣ Stable Pressure Drop

A good filter:

• Maintains low and stable ΔP

• Has pressure ports or indicators for monitoring clogging

4️⃣ Correct Installation Direction

• Follow flow arrow on housing

• Wrong direction reduces efficiency and damages elements

Regular Maintenance

• Clean or replace filterelement on schedule

• Drain condensate regularly

• Monitor pressure differential

4. Why Filters Are Critical in Industrial Combustion

A well-working gas filter:

• Protects gas burners from clogging

• Extends life of solenoid valves & regulators

• Improves combustion stability

• Reduces unplanned shutdowns

• Helps meet safety and emission standards

5. Signs a FilterIs Working Well (or Not)

 Working Well

• Stable gas pressure

• Smooth burner ignition

• Clean valve operation

• Low pressure drop

 Not Working Well

• Frequent burner flame failure

• Rising pressure loss

• Dirty valves downstream

• Filterelement clogged quickly

6. Simple Best-Practice Checklist

 Select correct micron rating
✔ Size filter for peak flow
✔ Install before regulators & valves
✔ Check pressure drop regularly
✔ Replace elements on time

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WhatsApp: 86 185 66303837
Email: ekeilairn@gmail.com
www.http://ekgas.com