Pioneer Regenerative Dryer

 
Why is dry air needed?

Moisture in compressed air causes costly problems in almost every application:

1. In air-operated equipment, moisture washes away required lubricants, increasing wear and maintenance, and decreasing efficiency.
2. In pneumatic control systems, moisture combined with other contaminants, plugs precision orifices, causing control loss or total shutdown.
3. In process applications, moisture can contaminate the product or chemically react to produce harmful or corrosive compounds.
4. When exposed to freezing temperatures, moisture in compressed air piplines will freeze, resulting in partial or complete blockage of air to vital operations.

Why a Regenerative Dryer?

Pioneer manufactures the most extensive line of compressed air and gas drying equipment on the market today.  Standard Pioneer regenerative dryers are designed for -40°F pressure dew point (optional -100°F).  They should be specified when low dew points are desired  (e.g., process air, instrument air, outdoor compressed air piping and gas drying).

What is Adsorption?

Adsorption is the fixation or the holding of a vapor on a desiccant's surface without mixing with its molecular structure.  Activated aluminas and carbons, silica gels, and molecular sieves are capable of adsorbing water vapor.  In order to obtain a high degree of adsorption the surface of the desiccant must be well developed.  The pressence of pores, fine capillaries in activated alumina, increases the surface area to several hundred square meters per gram of product.  Because water vapor has the highest affinity for alumina, activated alumina is the most common type of desiccant used to dry compressed air and gases.

What is Regeneration?


Regeneration or deosorption is the process of stripping or removing the condensed molecules of water vapor from the desiccant.  After the adsorption cycle, desorption is brought about by reducing the vapor pressure.  Regeneration or desiccant is accomplished by blowing a very dry and/or hot gas over the desiccant bed.  The dynamic capacity of activated alumina to adsorb and regenerate is a function of the temperature and pressure to which it is subjected.

SPECIFICATIONS AND DIMENSIONS
MODEL	DIMENSIONS			IN/OUT	INLET SCFM @100 PSIG	APPROXIMATE DESICCANT3	WEIGHT (LBS.) SHIPPING
	L	W	H
PHL-101	13	7	20	1/4" NPT	10	6	50
PHL-151	13	7	26	1/4" NPT	15	10	60
PHL-25	33	12	40	1/2" NPT	25	28	225
PHL-35	33	12	50	1/2" NPT	35	39	270
PHL-50	33	12	60	3/4" NPT	50	55	300
PHL-75	33	12	80	3/4" NPT	75	83	350
PHL-100	45	18	73	1" NPT	100	110	500
PHL-125	45	18	73	1" NPT	125	138	600
PHL-175	45	18	73	1-1/2" NPT	175	193	675
PHL-250	50	23	74	1-1/2" NPT	250	275	900
PHL-350	50	50	74	1-1/2" NPT	350	385	1050
PHL-500	55	27	86	2" NPT	500	550	1450
PHL-650	55	27	86	2" NPT	650	715	1600
PHL-800	83	31	95	3" FLG	800	880	2000
PHL-1000	83	31	95	3" FLG	100	1100	2500
PHL-1200	83	31	95	3" FLG	1200	1320	2900
PHL-1600	97	40	105	4" FLG	1600	1760	3900
PHL-1800	97	40	105	4" FLG	1800	1900	4400
PHL-2000	97	40	105	4" FLG	2000	2200	4900
PHL-2500	98	44	108	4" FLG	2500	2750	6000
PHL-3000	98	44	108	4" FLG	3000	3300	7200
PHL-3500	110	48	110	6" FLG	3500	3850	8500
PHL-4000	110	48	110	6" FLG	4000	4400	9800
PHL-5000	124	54	120	8" FLG	5000	5500	12,000
PHL-6000	136	60	125	8" FLG	6000	6000	14,500
NOTES: May be wall mounted; Cycle time - 5 minutes. Standard  voltage - 115-1-60, for voltage other than standard, consult factory. Initial charge of desiccant is included.  Models through PHL 175 are charge at factory.  In larger sizes, the desiccant is shipped separately to avoid attrition.

Heatless Regenerative Dryers (PHL)

Typical Flow Diagram

1. Inlet Valve (2)
2. Exhaust Valve (2)
3. Exhaust Muffler (2)
4. Tower Pressure Gauges (2)
5. Purge Flow Indicator (1)
6. Check Valve (4)
7. Purge Flow Orifice (1)
8. Purge Adjustment Valve (1)