PURIFICATION

♦
DRYING
♦
SYSTEMS
Air • Gas • Liquid

PSB INDUSTRIES INC.

General Air Division
Founded in 1951 within General Air Division (formerly a division of Zurn
the shipyards of Lake Erie Industries) specializes in compressed air, gas, and liquid
as Perry Ship Building, dehydration/purification technologies and offers a diverse
PSB Industries’ assistance line of product applications. Our packaged systems—
in the construction of
from the smallest to the largest applications—remove
moisture and contaminants from process streams.
bulk-carrier lake freighters
General Air’s custom-designed Hydryers® are specially
—plus its expertise in the
constructed to our customers’ specifications for gas and
repair and alteration of liquid processes, unlimited in size and capacity, and are
boilers—earned the designed for maximum efficiency. Meeting this manu-
company a reputation for facturing challenge, General Air’s own facilities, as well
excellence that continues as our key worldwide alliances, are well-equipped to
today. PSB Industries handle our customers’ wide range of requirements.
offers a legacy of crafts-
PSB ENGINEERING AND FABRICATION
manship and innovation
Customers worldwide have benefited from PSB’s proven expertise
to its industrial packaging
in the assembly and fabrication of industrial products, from
and manufacturing cus- adsorption, compressor and pump skids to pipe racks, burners
tomers throughout the and more. Working from your drawings or helping to customize a
specific solution, our experienced team can take the appropriate
world. From its highly components and sub-assemblies and “package” completed
skilled workforce to its industrial equipment for delivery anywhere in the world.
unique manufacturing Housing everything needed to complete our customers’ requirements
from start to finish, PSB’s 350,000 square-foot facility includes:
capabilities, PSB is well three covered and two outside loading docks, 20 functional pro-
equipped to handle any duction bays with overhead-crane lifting capabilities in each, six
multimedia blasting booths, ventilated and heated paint booths,
size job—from concept to
control panel shop and 60,000 square feet of warehouse space.
completion, and beyond.
PSB’s formal Quality Assurance program is designed to maintain
the high standards required by the many customers served by
General Air, including the following industries:
ISO 9001 CERTIFIED
• air separation • refining • electronics
• chemical • gas treatment • pharmaceutical
• petrochemical

QUALITY-POLICY STATEMENT
It is the policy of PSB Industries Inc. to consistently meet
customer requirements through the education, implementation,
and maintenance of our documented system in compliance with
all applicable codes and standards and the ISO 9001 Standard.

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Custom Hydryers®
meeting customer specifications with special designs
DEHYDRATION ppb levels

PURIFICATION ppb levels

CATALYTIC PURIFICATION

TRACE-SULFUR REMOVAL

SOLID-ADSORBENT TECHNOLOGY
• Molecular sieve
• Selective adsorbents
• Activated alumina
• Activated carbon
• Catalyst

Gas Purification
Package
Standard Dryers
latest technology, standard construction, standard options
REFRIGERATED

DUAL-TOWER DESICCANT
• Heatless
• Blower Purge
• External Heater
• Internal Heater
• Closed Loop

SINGLE VESSEL
• Deliquescent
• Oilsorber
• Tank Vent
Compressed Air
• Mini Adsorber
Dryer Package

Parts/Customer Service/Technical Support

• Spare parts for Pritchard, Brown • Filter replacement elements
Fintube, Zurn and PSB Hydryers®
• All types of desiccant
• Specialty dryers and accessories
• Domestic and international technical
support

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PSB Packaged Hydryers ®
From originating PROCESS DESIGN to meeting OUTLET SPECIFICATION,
PSB ensures your process and mechanical requirements are satisfied.

• Local PLC control

or customer DCS
• Stress analysis
• Factory fit-up
• Process design
• Mechanical
design
• 3-D design
• PLC programming
and testing

• Specialized cleaning
and painting
• Factory insulation
• Export crating or
containerization

• Project
management • NDE
• On-site training • Quality dossier
and start up
• QC documentation
• Single-point • ASME/ANSI
warranty • ISO 9001
and technical • Code fabrication
support • UL, CSA, codes
as required

Contact us or visit our website at

www.psbindustries.com to fill out
our Application Questionnaire.

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Applications Using Solid Adsorbents
REMOVING WATER AND OTHER CONTAMINANTS FROM:
Gases Liquids

• Inorganic Gas • Organic Gas • Solvents/Other • Refinery Products

Air Butane Acetone Butadiene
Ammonia Carbon Dioxide Benzene Butane
Argon Carbon Monoxide Comonomers Butene
Chlorine Ethane Ethanol Ethane
Helium Ethers Freons Isobutane
Hydrogen Ethylene Heat Transfer Fluids Isopentane
Hydrogen Sulfide FCC Offgas IPA Kerosene
Mixed Gases Landfill/Digester Methanol Naphtha
Nitrogen Methane Monomers Pentane
Oxygen Methylene Chloride NGL Propane
Sulphur Dioxide Mixed Hydrocarbon Gases Trichloroethylene Propylene
Natural Gas Toluene Raffinates
Propane Xylene
Propylene
Synthesis Gas

GAS AND LIQUID PURIFICATION CATALYTIC PURIFICATION

• Removal of carbon dioxide • Removal of water, nitriles, oxygen- • Removal of oxygen from nitrogen,
from ethylene for production ates, and sulfur compounds argon, etc.
of polyethylene plastic. from propylene.
• Removal of hydrogen from helium
• Removal of MAPD and • Removal of water and carbon or other gases.
arsine/phosphine from dioxide from mixed gases prior
propylene. to cryogenic separation. • Removal of H2/CO from air for
high-purity process.
• Removal of carbon dioxide from • Removal of sulfur compounds
organic and inorganic gases prior from gasoline blendstocks. • Catalytic oxidation of hydro-
to liquefaction. carbons.

• Removal of sulfur compounds,

such as mercaptans and hydro-
gen sulfide, from natural gas prior
to liquefaction.

REGENERATION OPTIONS
“X” – External/Separate Source “C” – Atmospheric Air
When customer has dry, clean Typically known as blower purge and
regeneration gas available. uses ambient air for regeneration.

“A” – Split Stream “E” – Closed Loop

A portion of process is split off, used A captive volume of gas is recirculated
to regenerate bed, then returned to to heat and cool the regenerating tower.
process.

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Typical Custom Applications
HIGH-PURITY AIR HYDRYER®
• Electronics plant
• 4,592 scfm at 135 psia
• Outlet specification:
0.1 ppmv H2O
0.1 ppmv CO2
5.0 ppbv CO
• Catalytic purifier
• Two-stage cooling
• Local PLC control
Model X-437-SP
• Dual-tower adsorbent beds
• Electric heater with SCR

PROPANE HYDRYER®
• Underground storage site
• 4,800 gpm at 240 psig, saturated
with water
• <20 ppmw water outlet
• Activated alumina
• Air-cooled condenser
• Parallel on-stream vessels
• Multiple electric heaters
• Local high- and low-voltage Model A-900-SP
electrical enclosures

BUTANE HYDRYER®
• Refinery
• 4,600 BPSD
• <10 ppmw water outlet
• Steam heater
• Dual API pumps
• Remote, redundant PLC
• Factory insulated
• Galvanized base and piping
supports Model A-210-SP

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Typical Custom Applications
CO2 HYDRYER®
• Beverage industry
• 44,501 lb/hr
• 292 psig
• -80°F dew point
• Sulfur removal
• Factory insulated
• Metal seated valves
• Selective adsorbent

Model X-270-SP

N2 HYDRYER®
• PET processing
• 2.0 psig
• 500 SCFM
• -40°F dew point
• Organic removal
• Blower purge
• PLC control
• Molecular sieve adsorbent Model C-300-SP

VENT-GAS HYDRYER®
• Chemical plant
• 1,200 lb/hr
• 36 psig
• 300 ppmv H2O in
• 0.1 ppmv H2O out
• Closed-loop regeneration
• Explosion-proof electrical enclosure
• Manual switching Model E-30-SP

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Typical Custom Applications
LANDFILL GAS
• Waste to energy plant
• 1,070 SCFM Biogas
• 70% CH4, 20% CO2, 1% H2S,
balance water and trace elements
• 30-35 psig, 105°F inlet
• Outlet dew point of 38°F
• Stainless steel materials in contact
with process
• Class 1, Division 2, Group C & D
electricals
• NEMA 4X “Z” purged electrical
enclosure Model R320A-SP

BENZENE HYDRYER®
• LAB plant
• 525 lb/hr with 1,600 ppmw water
• <16 ppmw water outlet
• Split stream regeneration, no loss
of product
• CSA electricals, inspected at factory
• Fully assembled, ready for piping
and electrical connection
• CRN vessels

Model A-20-SP

ARGON HYDRYER®
• Air separation plant
• 41,700 SCFH crude argon
• 62 psia
• 4% oxygen inlet
• 2 ppmv oxygen outlet
• -100°F outlet dew point
• Catalytic deoxo bed
• Recirculation blower to dilute oxygen
• Finned pipe coolers
Model X-230-SP

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Typical Custom Applications
PROPYLENE HYDRYER®
• Gulf coast refinery
• 14,300 BPD at 400 psig
• 0.5 ppmw outlet water
• Dual steam heaters
• Split stream regeneration – no loss
of product
• Valve status lights on local PLC
enclosure
• Galvanized base with deck plate

Model A-1410-SP

HYDROGEN HYDRYER®
• Chlor-Alkalai facility
• 28 MMSCFD @ 410 psig
• Eight vessel system
• HCl removal, lead-lag
• Sulfur removal
• Deoxo/RCI catalytic conversion
• Heat recovery
• Final moisture removal

Model X-930-SP

AIR PRE-PURIFIER HYDRYER®

• Air-separation plant
• Combination chiller/dryer
• 1,441 SCFM, 125 psia
• 400 ppm CO2
• O2 cleaned
• O2 rich regeneration
• Remote PLC panel
• Outlet specification:
<0.1 ppmv H2O
<1.0 ppmv CO2

Model R360W/X-158-SP

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Standard Dryers
Dryer Selection Guide
Standard
Flow Obtainable
Dryer Type Primary Rates To Dew Point Type Heater Reactivation Purge
Type Drying Service SCFM Range Reactivation Location Purge Loss

G4
and Refrigerated Air, Gas 25,000 38°F to 50°F NA NA NA No
G5
Deliquescent 20°F to 30°F
SD Air, Gas 16,500 NA NA NA No
Absorption Suppression
GH Adsorption Air, Gas 6,000 -40°F to -100°F Heatless NA Dry Product Yes

GX Adsorption Air, Gas 6,000 -40°F Electric External Mixed Flow Yes
GXB Adsorption Air, Gas 6,000 -40°F Electric External Mixed Flow Yes
P and PC Adsorption Air, Gas 3,200 -40°F to -100°F Electric Internal in Pipe Dry Product Yes

MODEL G4 MODEL GH
• Refrigerated • Heatless
• Hot gas • -40°F to -100°F
dew point
• Economical
• 10-6,000 scfm
• 10-3,000 scfm
• Filter package
• Air or water cooled options
• 35°F to 40°F
dew point

MODEL G5
• Refrigerated
• Digital dew-point
readout
• Electronic demand
control
• 40-25,000 scfm
MODEL GX
• Air or water cooled • Externally heated
• 35°F to 40°F • GXB – blower purge
dew point
• GXBC – closed loop
• 40-6,000 scfm
• Skid package
MODEL P/PC • -40°F dew point
• Internally heated
• Minimal purge loss
• Blower assist option
• Closed loop —
no-loss option For larger capacities, call, fax or e-mail our factory:
• Standard and custom Phone: (814) 453-3651 • Toll Free: (800) 829-1119
feature
Fax: (814) 454-3492 • E-Mail: psb@genair.net
• -40°F to -100°F
dew point
For dryer selection, you may also visit our website:
www.psbindustries.com

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Specialized Dryer Products
Deliquescent Desiccant Dryers can Oilsorber® Tank Vent Air Dryers
be installed indoors or outdoors, on The General Air Oilsorber® utilizes The General Air Storage Tank Vent
systems equipped with aftercoolers. a bed of activated alumina and/or Dryers are designed to reduce the
They are highly efficient at lower inlet carbon to remove vapor phase oil water content of air entering a liquid
temperatures. At inlet through the adsorption process. storage tank, thus
temperatures up to The Oilsorber® will decreasing internal
100°F, a 20-30°F remove vapor corrosion and
dew point temper- phase oil entering entrained water.
ature suppression an adsorbent bed These dryers work on
is attained. dryer and prolong the same principles as
desiccant life. General Air Desiccant
Dryers with the excep-
tion that they are
designed to efficiently
dry air at atmospheric
or near atmospheric
conditions. Carbon or
stainless steel construction
is available.

Air and Mini

Gas Filters Adsorbers Parts
General Air’s efficient Filter units, with The General Air Mini-Adsorber is the Spare Parts
replaceable cartridges, are available equivalent to a compact single-tower • Filter elements
as Particulate filters, Coalescing desiccant dryer. This type of system • All desiccant types
filters, or as Odorgard/Adsorbent is designed to dry small
filters. The Particulate volumes of compressed Parts, technical support, and
filter removes 100% of air for point-of-use optimization of dryers sold
all solids 0.9 micron and applications. The under PSB’s brands:
larger. The Coalescing General Air Mini- • General Air
filter removes all parti- Adsorber design • Zurn
cles and all aerosols provides full bed • Brown Fintube
down to 0.3 microns. adsorption. Inlet air flow • Pritchard
The Odorgard™ adsor- is directed to the bottom
bent filter removes oil of the canister, thus
and hydrocarbon vapors using the entire desic-
down to 0.001 ppm in cant bed for upflow dry-
addition to eliminating ing. Available adsorbers are:
offensive odors affecting • Activated alumina
taste and smell. • Molecular sieve
• Activated carbon

Drain Valves
ET-4 Electronically-Timed, Motor- steel, and stainless steel ball valves
Operated Ball-Drain Valves are available. The drain valves operate
NEMA 4X weatherproof enclosure at 115 VAC, single phase, 50-60
for indoor and outdoor installation. cycles. This valve is a non-clogging,
Switches for adjusting the blow- highly dependable drain used for
down cycle and the valve-open time. receiver tanks, sumps, coalescing
A manual-override switch is equipped filter drains and refrigerated dryers.
for manually checking the ball valve.
These drain valves are available in 1/2",
3/4" and 1" NPT connections, carbon
NEE W
NMA 4X
SURE
ENCLO

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PSB INDUSTRIES INC.
General Air Division
1202 West 12th Street
Erie, PA 16501 USA
Phone: 814-453-3651
Toll Free: 800-829-1119
Fax: 814-454-3492
E-Mail: psb@genair.net
www.psbindustries.com

Form No. 103-SBG, PDF-9/02