HCNG

High-pressure compressed natural gas dryer

HCNG = High-pressure compressed natural gas dryer

Dual Tower Continuous Duty Purifier

Pressure through 5000PSIG/345 BarG. HCNG systems are ideal for large gas flow continuous duty service after the natural gas compressor. Systems are completely self-contained with pre-wired and pre-piped components. One tower purifies while the other regenerates.

Operation

In high pressure purifiers, one tower dries while the other regenerates similar to the LCNG purifiers. The key difference is that in the HCNG purifiers, the moisture-laden purge gas is returned to the gas compressor inlet.

The Pioneer design includes filters at inlet and outlet of each tower for enhanced system reliability.

· Standard Features
· Options
· Flow Diagram
· Specifications
Particulate prefilters (one per tower)
Particulate afterfilters (one per tower)
Two desiccant towers
Two tower pressure gauges
NEMA 7 electrical control panel for automatic and continuous operation
Two inlet valves
Two outlet valves
Two exhaust valves
Two regeneration valves
Pilot air filter
Gas heater and controller with safety shutdown.
Three valve block and by-pass system
Pioneer dewpoint analyzer plus with alarm, dedicated filter protection, inlet/outlet valving, and visual moisture indicator–NEMA 4, 7, or 12.
Duplex prefilter with block and by-pass
Duplex afterfilter with block and by-pass
Stainless steel condensate accumulator and automatic drain system
Two pressure relief valves
Coalescing prefilter
Demand cycle control

Typical Flow Diagram HCNG Series

Exhaust valve
Tower Pressure Gauge
Inlet Valve
Exhaust Orifice
Repressurizing Orifice
Repressurizing Valve N/C
Purge Adjustment Regulator
Pressure Gauge
Purge Flow Orifice
Relief Valve
Heater
Check Valves

Specifications and Dimensions

Model	Inlet Capacity SCFM/NM³HR @50 PSIG/ 3.5 BarG	In/out (in/mm)	Approximate Shipping Weight (lb/kg)	Dimensions (in/mm)
Model	Inlet Capacity SCFM/NM³HR @50 PSIG/ 3.5 BarG	In/out (in/mm)	Approximate Shipping Weight (lb/kg)	L	W	H
HCNG50	50/85	.25/6.35 NPT	350/159	30/762	28/711	51/1295
HCNG75	75/128	.25/6.35 NPT	400/181	30/762	28/711	51/1295
HCNG100	100/170	.375/9.53 NPT	500/227	30/762	28/711	60/1524
HCNG150	150/255	.375/9.53 NPT	600/272	30/762	28/711	60/1524
HCNG200	200/340	.375/9.53 NPT	650/295	30/762	28/711	54/1372
HCNG300	300/510	.375/9.53 NPT	700/318	30/762	28/711	54/1372
HCNG400	400/680	.5/12.7 NPT	750/340	30/762	28/711	60/1524
HCNG500	500/850	.5/12.7 NPT	850/386	38/965	30/762	58/1473
HCNG600	600/1020	.5/12.7 NPT	900/408	38/965	30/762	62/1575
HCNG800	800/1360	.75/19.05 FLG	1100/499	44/1118	36/914	60/1575
HCNG1000	1000/1700	.75/19.05 FLG	1200/544	44/1118	38/965	68/1727