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DH CNG Dryer

Natural gas dryers remove water vapor prior to storing or using natural gas for a vehicle fuel.  High water content can cause blockage of CNG in fueling systems and can contribute to corrosion in storage vessels and piping.CNG dryer is an ideal system for drying small volumes of natural gas for stations with intermittent use. Each unit is conservatively sized to remove moisture from gas upstream of the natural gas compressor.The dryer is shipped with an initial charge of molecular sieve desiccant. Prior to installing shipping plugs, the bed is blanketed with bone dry nitrogen gas. The 
nitrogen blanket keeps the bed fresh and allows long term storage of the dryer prior to installation.
When the initial charge of desiccant has reached maximum drying capacity, it can be replaced with a fresh charge of desiccant.
 
Features:
1.Main unit: Including absorption tower (A/B), high pressure ball valve, pneumatic actuator, pressure regulating valve, molecular sieve and primary filter, oil-removing filter, dust-removing filter, xplosion-proof electric heater, and PLC electric control box.
2.Attached documents: certificate, specification, outline drawing, documents of pressure vessels, and electric sketch
3.The dryers are designed, produced, and tested strictly as per the relevant standards of the Code for design of Natural Gas Dehydration (SY/T0076-08), Steel Pressure Vessel (GB150-1998), and Safety Technical Supervision Code for Pressure Vessel (TSG R0004-2009).
4.The dryers are special for deep dehydration device of compressed natural gas; they enjoy a good high compressive strength and dewatering effect, with high quality molecular sieve as an adsorbent. What's more, their general service life can be above 12000 h.
5.The dryers adopt counterflow heating regeneration method that ensures them small gas consumption, environmental protection, and high efficiency.

Main Technical Parameter:
Type: DH-2000/25(2000 cubic meters)
Design pressure: 28Mpa
Rated working pressure: 20-25Mpa
Rated flow: 2000 Nm3/h
Environment temperature: 2-50 ℃
Intake and outlet temperature: ≤40 ℃
Outlet atmospheric dew point: ≤-60℃
Inlet oil content: ≤15 mg/Nm3
Outlet oil content: ≤0.1 mg/Nm3
Maximum particle diameter of exhaust gas: ≤5  μm
Pressure drop at the inlet and outlet: ≤0.05 Mpa
Regeneration pressure: 0.3-0.6 Mpa
Regeneration mode: Countercurrent heating regeneration method
Control mode: PLC automation (automatic switchover and regeneration)
Working mode: continuous working with two towers
Filter cleaning mode: Hand-operated
Work cycle: 16h(12-20h adjustable)
Recovering period: ≤6h(4-8h adjustable)
Recovering temperature: ~200℃(180-230℃)
Adsorbent and its dosage: ~180Kg (4A globular molecular sieve)
Anti-explosion heater power: 12kw
Inlet and outlet pipe diameter: φ32×5 mm
Installation method: Integrated skid-mounted, indoor installation or outdoor installation with sheds
Dimension (L×W×H): ~2500×1400×2450 mm
Total mass: ~2200kg

If you have any specific requirements for a CNG Dryer, please feel free to contact us with your query. 
We also supply other series CNG Dryer and customed type.

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