Ge High Pressure Ratio Compressors Brochure

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GE Oil & Gas

High Pressure

Ratio Compression

Innovative HPRC technology in a

lightweight, compact and

cost-efficient package

A whole new way

of thinking about

compression

GE’s HPRC technology is

based on an innovative

architecture that combines

unshrouded and shrouded

impellers on a single high-

speed shaft to achieve

pressure ratios and efficiency

levels higher than other

available technologies.

As result of the increased

head per stage, HPRC units

have a shorter bearing span

that reduces the number of

casings required. Applications

that would typically require

multiple compressor bodies

will only need one with HPRC.

Individual HPRC units are

already smaller and lighter

than traditional compressors,

and the elimination of units

per train is another giant

improvement in overall

plant footprint, reliability,

availability and weight.

Comprehensive testing

The rigorous validation program comprised

a variety of tests on machine integrity,

compressor performance, operability and

response to upset conditions:

• Full load compressor performance

• Extensive rotor-dynamic test campaign

• Aeromechanical test at different suction

pressure levels

• Test of upset conditions such as

emergency shut-down and exploration

of surge region

Smaller package

Bigger results

HPRC technology is applicable to many gas

processes and is well suited to both low

and medium molecular weight mixtures. It

delivers high reliability and efficiency: from

reduced weight and easier installation,

to minimized footprint, lower power

consumption and reduced maintenance.

HPRC advantages

• Up to 50% smaller train footprint

than traditional configuration

• Up to 30% lighter weight

• Up to 5% less power consumption

• Simplified installation

• Higher reliability & availability

due to auxiliary equipment reduction

(eg: DGS, lubrication)

• Lower downtime and easier

maintenance

• Wide revamping flexibility

Key features

Centrifugal compressor Up to 3 sections (@ 2 intercooler) in 1 casing

Max. operating pressure 400 bar (5,800 PSI)

Pressure ratio Up to 30:1 (with natural gas mol. weight 20)

Max flow 300,000 Am3/h (254 MMSCF/D)

Arrangement Between bearings

Gear selection Parallel shaft for Gear ratio < 9

Epicyclic gear ratio > 9 & power < 35 MW

Driver types All

Dry gas seal Standard

Bearings Standard

Availability +0.3% vs. standard machine

Reliability +0.2% vs. standard machine

93,000 kg

(205,000 lb)

67,000 kg

(148,000 lb)

85 m2

(915 ft2)

39 m2

(420 ft2)

Traditional configuration

Highly compact

HPRC has up to 50% smaller footprint and 30% lighter weight

than traditional train configurations.

HPRC

C

GA

C C

GA

Compressor Casings AUX GearboxGAC

Wide operating range in all applications

HPRC is well suited to a wide range of applications. The new

technology is best suited to gas with low-to-medium molecular

weight, where head per stage is a limiting factor – and the

greatest benefits can be realized in natural gas, petrochemical

and LNG.

Optimized design

The use of both unshrouded and shrouded

impellers on a stacked rotor with hirth

teeth allows high tip speed and eliminates

the shrink-fit limitation typical of other

centrifugal compressors. Head per stage

has been increased and the number of

stages reduced by about 50%. The result

is a higher total pressure ratio with fewer

impellers.

Fewer stages allows rotating speed to

be increased with sound rotordynamics,

which in turn increases flow coefficient

of the stages and provides a high

compression efficiency.

The parallel shaft gear can be replaced

by an epicyclical gear for higher speed

requirements. It has a higher ratio

and significantly lower losses than an

equivalent parallel shaft gear. With co-axial

input and output shaft lines, the epicyclical

has no need for shaft offsets between

driver and driven machinery – so it is also

a much more compact and lightweight

solution.

Combining multiple bodies into one

increases the number of inlet and outlet

flanges.

Vol Flow

(Am3/h)

100

90

80

70

60

50

40

30

20

10

0

P. RATIO

RPM

35,000

30,000

25,000

20,000

15,000

10,000

5,000

0

0 5 10 15 20

0 10,000 20,000 30,000 40,000 50,000 60,000 70,000

25 30 35 40 45 50 55

(MMSCFD)

30

25

21

16

35

mol. w.

800

700

600

500

450

400

350

300

250

Machine Size

GE_HPRC_brochure-021315

GE Oil & Gas

Global Headquarters

The Ark

201 Talgarth Road, Hammersmith

London, W6 8BJ, UK

T +44 207 302 6000

customer.service.center@ge.com

Turbomachinery Solutions

Via Felice Matteucci, 2

50127 Florence, Italy

T +39 055 423 211

F +39 055 423 2800

customer.service.center@ge.com

Nuovo Pignone S.p.A.

Nuovo Pignone S.r.l.

For complete contact information,

please refer to our website.

geoilandgas.com/HPRC

The information contained herein is general in nature and is not

intended for specific construction, installation or application

purposes. GE reserves the right to make changes in specifications

or add improvements at any time without notice or obligation.

GE, the GE Monogram, and imagination at work are registered

trademarks of the General Electric Company.

©2015 General Electric Company

All Rights Reserved