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Compressed air contains water, oil and dust. Without purification, it causes pipe rust, pneumatic failure, product defects and higher energy costs. A complete after-treatment system = Air Tank + Filters + Dryer — sequence and configuration are critical.
1. Core Equipment & Selection
(1) Air Receiver Tank (MUST-HAVE)
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Function: Stabilize pressure, buffer, remove 70% liquid water
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Selection: Volume ≥ 1/10 of compressor flow (m³/min)
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Recommend: Carbon steel, 1.0MPa, safety valve, auto drain
(2) Filters (In Series, Correct Order)
Right sequence:
C (Coarse) → T (Main) → Dryer → A (Precision) → ACS (Carbon)
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Missing one stage: Component life ↓3–5 years
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Reversed order: Fast clogging, high energy waste
(3) Air Dryer (By Dew Point)
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Refrigerated Dryer (RD)
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Dew point: 2–10°C
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Pros: Low cost, energy saving, easy maintenance
→ For: machining, auto parts, packaging
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Desiccant Dryer (AD)
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Dew point: -20°C ~ -70°C
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Pros: Ultra-dry, for precision industries
→ For: food, pharma, electronics, laser cutting
2. Industry Packages (Ready to Use)
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General Machining: Tank + C+T + RD
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Painting/Electronics: Tank + C+T+A + RD
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Food/Pharma: Tank + C+T+A+ACS + AD (dew ≤-40°C)
3. APDATECH Cases
Case 1: Mexico Food Factory
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Pain: Water & oil caused spoilage; export rejected
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Solution: 4-stage filtration + heatless desiccant dryer (-40°C)
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Result: Passed FDA & ISO 22000, exports to EU/US
Case 2: Thailand Auto Parts
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Pain: High pressure drop, high electricity cost
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Solution: Low-drop filters + VSD refrigerated dryer
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Result: Energy use ↓25%, save $12,000+/year
Case 3: Australia Mining
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Pain: Low temp & high humidity caused freezing
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Solution: Compression heat dryer (-60°C) + stainless filters
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Result: Stable at -30°C, no freezing, no downtime
4. Global Buyer Tips
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Voltage: 220V/380V/415V, 50/60Hz
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Certifications: CE, ISO, ATEX (explosion-proof)
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Material: Food/pharma → 304SS; Industrial → carbon steel
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Support: 1-year warranty, English manual, global tech support
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