Siemens STC-GV, STC-GVT User Manual

STC-GV, STC-GVT Siemens Turbocompressor –
Integrally Geared, Vertically split volute casing

A success story since 1948

Since its inception 60 years ago, the
STC-GV compressor series has been meet­ing demands for compression solutions
with high efficiencies and pressures up to
200 bar. STC-GV compressors, designed
according to customer specifications and
in accordance with both API 617 and
API 672, guarantee the highest quality
and technical standards for a broad range
of industrial application.

An innovative and compact design allows
for an integrated turbine drive within
STC-GV, where compressor stages and
turbine are mounted on the same gear
(STC-GVT).

Highlights

The perfect match for all air

separation and process industry
requirements

High efficiency and out-

standing operating range

Powerful and robust

design, with integrated
turbine or expander options

Flexible design concepts combining

custom-tailored design with
standardized components for
maximum reliability

Siemens is the only compressor

manufacturer who also develops
and supplies proprietary gear
technology

Fields of application

Air separation
Ammonia
Carbon capture and storage
Ethylene oxide
Flare mitigation
Fuel gas
Hydrocarbons
Metallurgy

- Direct reduction

- Direct smelting
Petrochemicals
Phenol
Refineries
Synthetic fibers

Siemens Turbocompressors

Answers for energy.

Integrally geared centrifugal
compressor with vertically
split volute casing (STC-GV)

Design Concept

Powerful, robust and reliable

The STC-GV integrally geared centrifugal
compressors feature a multi-shaft arrange­ment with different speeds. All shafts are
mounted in maintenance-free, oil-lubri­cated hydrodynamic bearings. With up to
eight compressor stages around a central
bull gear, the STC-GV compressor series
forms a compact unit for the multi-stage
compression of a wide range of gases.

Optimized shaft speeds, modern impellers,
tailored aerodynamics and mechanics
along with optimized auxiliaries guaran­tee the highest efficiency. Adjustable
guide vane units at the first and /or any
other compression stage optimize the
operating range. External cooler arrange­ments allow for operation at extreme
site conditions.

Package and driver options

For most STC-GV compressor sizes,
Siemens offers a package design. The
package includes the compressor, driver,
process gas coolers, lube oil console,
process piping and all tubing and wiring.
The package design leads to significantly
reduced on-site installation time. These
compressor types are also suitable for
direct turbine-drive or integrated turbine
design (STC-GVT).

Driver: depending on process and energy
resources: steam turbine, gas turbine or
electric motor.

Siemens also offers variants of
the STC-GV:

STC-GV (H): this compressor is designed

for high-pressure application with
suction pressures higher than 5 bar,
especially booster air in air separation.

STC-GVT: a new and compact design,

STC-GV is also available with integrated
turbine drive, compressor stages and
turbine being mounted on the same
gear.

STC-GT: single- or multi-stage

expanders enable power recovery
from process gases.

STC-GVT: with its single or multiple

expander stages, STC-GV T is the ideal
solution for simultaneous gas compres­sion and expansion of process gas.

integrated steam turbine (STC-GVT)

STC-GVT on testbedIntegrally geared turbocompressor with