ingersoll rand low pressure solutions - energy davar

January 2006

Centac® CX Blowers Overview

Ingersoll Rand Low Pressure Solutions

Global Process Air Solutions2

Ingersoll Rand Centac® CX Series Blowers

• Formerly called X-Flo• Introduced in ’80’s• IR lost focus in late ’90’s


• Single-stage, oil free centrifugal blower

• Unique aerodynamic design for increased efficiencies.

• Available for air and gas applications.

• Standard frames available in package options to suit individual requirements.

• Integral gear design.

• Small and compact for ease installation and maintenance.

Centac® CX Series Blowers


0

5

10

15

20

25

30

0 5000 10000 15000 20000 25000 30000 35000 40000 45000

SCFM

PS

IG


CX75CX55CX45CX35CX25 CX65

Performance Range


Performance Range


CX75CX55CX45CX35CX25 CX65

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

1.60

1.80

2.00

0 100 200 300 400 500 600 700 800 900 1000 1100 1200

Nm3/hr

ba

rg

Nm3/min


Centrifugal Blower Anatomy

Discharge

Inlet Guide Vane Pinion

Oil SealsThrust Collar

Shaft Coupling

Bull GearShaft-driven oil pump

Impeller

Suction

Air Seal


Typical Competition Blower Anatomy


Centrifugal Impeller vs. Mixed-flow Impeller

• Advanced mixed flow wheel design combines axial and centrifugal technologies.

• Air passes through mixed flow wheel at 45 DEG angle.

• Turbulence is lower for 45 DEG wheel compared to 90 DEG (radial) wheel.

• Low turbulence means higher efficiency over radial wheel.

• Flow capability of mixed flow wheel is 2-3 higher than a radial wheel with same diameter


Rotating Assembly

• One Piece Chrome-Moly alloy steel pinion Shaft

• Impeller material available

– Stainless Steel

• 120% overspeed tested as standard

• Balancing Procedure:

– Pinion Separately

– Impeller Separately

– Trim balance of complete assembly.


Fixed Diffuser Vanes

• Machined vaned diffuser - not pin-on vanes.

• High efficiency realized with fully developed flow through impeller and diffuser.


• High corrosion resistance is standard with stainless steel vanes.

• Minimum of moving parts - assures high reliability.

• Mounted vane angle position indicator.

• Mounted integral to the compressor.

Inlet Guide Vane Damper


Variable Diffuser Vanes Variable Inlet Guide Vane

Typical Competitive Equipment

• Very complex construction

• Many, Many more moving parts


• Unique wind-back labyrinth seal design.

• Air seal completely separate from gear case to ensure 100% oil free air.

• Oil seal incorporates an oil slinger ring, a labyrinth seal on the outboard casing side. This prevents oil migration along shaft out of gear case.

Air and Oil Seal


• Horizontally split for quick and easy assembly / disassembly.

• Tilting pad design for excellent stability at high speeds.

• Field replaceable tilting pads for easy maintenance.

• Embedded RTD’s in pads are available as an option.

Pinion Shaft Bearings


Gears / Thrust Collars

• Integral thrust collars transfer aerodynamic and gear thrust loads to the bullgear to improve reliability and reduce parasitic horsepower losses

• Bullgear and bullgear shaft are integral forging.

• Bullgear made of carbon steel (AISI 1045).


• Input shaft oil seal consists of oil slinger ring and reverse thread labyrinth on shaft with labyrinth seal on gearcase.

• Oil seal is horizontally split.

• Driver side bullgear bearing is horizontally split radial journal bearing with integral fixed tilted pad thrust bearings.

Input Shaft Seals


• Gear-rotor type pump.

• Mounted on and driven by Input shaft for reliable operation and ensures lubrication to bearings in vent of power failure.

• Oversized to ensure adequate lubrication to all components.

Shaft-Driven Oil Pump

Applications



Waste Water Treatment

Industry Requirements:• 500 to 30,000 SCFM• 5 to 18 psig

Customer Value Drivers:• Ease of Installation• Efficiency

Decision Maker:• End User / Contractor

Where to find them? • Food & Beverage• Pulp & Paper• Refinery• Municipalities

Blower Applications


Refinery

Blower Applications

Refinery Application

Combustion Air for SRU

Wastewater Treatment for run-off water

Misc. gas boosters

Most CX Blower opportunities are going to be Combustion Air and WWT Aeration.


Carbon Black Production

Blower Applications

Process

Combustion Air for Production

Air is supplied to oil burners to produce controlled smoke.

Customers

Cabot Corporation

Continental Carbon

Columbian Chemical

Misc. others.


Power Plant – Flue Gas Desulfurization

Blower Applications


FGD System Schematic

Wet FGD System

• Sulfur in the flue gas is “captured” by the limestone spray

• Droplets collect in the slurry at the bottom of the absorber and react with the oxygen in the water to form Calcium Sulfate (Gypsum)

• Blowers are used to provide air (oxygen) for the appropriate reaction to occur.

Installations


Capacity : 15,000 icfm @ 25 psig (1750HP) Location : Longview,Washington

CX 45 Combustion Air Blower

The blower shown is installed in a Refinery in Longview, Washington USA.

The blower in this application supplies combustion air to a Sulfur Recovery Unit (SRU). This is a very common application used in almost every refinery.


CX35 Combustion Air Blower

Capacity : 9,000 icfm @ 18 psig (700HP) Location : Franklin, Louisiana

The blower shown is installed at Cabot Corporation in Franklin, Louisiana.

Again, this blower is supplying combustion air, but this time to a Carbon Black manufacturing process. In this process oil is burned under very controlled conditions and the burn carbon that is produced is used for various inks and toners.


CX35 Aeration Blower

Capacity : 9,000 icfm @ 14 psig (600HP) Location : Philadelphia, Pennsylvania

This installation photo illustrates the proper installation of a CX Blower. Note the isolation joints at the inlet and outlet of the machine. These are used to isolate the machine from thermal expansion of the piping system and the blower housing.

ingersoll rand low pressure solutions - energy davar

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