SEPURAN® NG

Membrane technology
for efficient natural gas
processing

Consistently
high performance

SEPURAN® NG is an especiallyrobust, hollow-fiber membrane,
which is based on a high-performance polymer that can withstandextreme pressure and temperatures,and features a stable performanceeven in the presence of H2S, water orhigher hydrocarbon concentrations.

Modularstructure

Our membranes have been
designed for conventional,
membrane-based natural gas
processing plants.
As plug-in replacement for
all standard 8”membranes nofurther adaptations are required
to the existing equipment.

SEPURAN® NGVALUE CHAINEVONIK
BUSINESS
Monomer

Polymer

Membrane

Module/Cartridge System

EVONIKTECHNOLOGYSUPPORT

APPLICATIONSOffshore applications
with dedicated partners

Onshore applications
with dedicated partners

SEPURAN® NGTHE
SPECIALONE!
SEPURAN® NG is an especially selective and robust
hollow-fiber membrane, which is based on a high-performancepolymer that can withstand extreme pressure and temperatures.
This enables particularly selective sepa-The membrane is designed for theration of the sour gases from the natural

challenging process conditions of naturalgas, high tolerance of the higher hydrogas processing with complex gas composi-carbons contained in the natural gas,

tions and typical pressure and temperatureand consistently high performance of theconditions up to 70 °C. It can be usedmembrane throughout its lifetime.

particularly effectively in natural gas

Overall, Evonik’s innovative separation

sources with a high concentration of carbon

technology features significantly increased

dioxide because, under these conditions,recovery of methane, which has a cor-the separating properties of theresponding effect on the profitability ofmembrane remain intact.

natural gas processing plants.
Increasing
performance
1000AmineGas flow rate [MMscfd]

Membrane + Amine

Membrane

102102030

CO₂ feed concentration (%)

Performance improvements
in membranes makes themmore competitive to amines.

FEEDPERMEATE

Plug-inreplacements

Plug-in replacements for all
standard 8" membranes makefurther adaption unnecessary.

RETENTATE

How does
it work?

Feed gas enters the cartridge
through holes in the protective
sleeve and is forced to flow
through the structurally packed
hollow fiber bundle. Fastpermeating gas components like
CO2 and H2O can enter thefiber lumen; the permeate gas iscollected in the center tube. Slowcomponents like CH 4 pass thebundle and leave the cartridge at
the retentate end. An adjustableseal ring guarantees securely
separated feed and retentate gas

zones. The retentate gas of theleading cartridge of a multiple
cartridge arrangement becomesthe feed gas of the next cartridgein the series. Typically 3 to 5
cartridges are connected in series
in the same housing.

8" membrane system
consisting of a cartridge
cast and a vesselThis information and all technical and otheradvice are based on Evonik’s present knowledge and experience. However, Evonikassumes no liability for such information oradvice, including the extent to which suchinformation or advice may relate to third party
intellectual property rights. Evonik reserves
the right to make any changes to information
or advice at any time, without prior or subsequent notice.
EVONIK DISCLAIMS ALL REPRESETATIONS
AND WARRANTIES, WHETHER EXPRESSOR IMPLIED, AND SHALL HAVE NO LIABILITY FOR, MERCHANTABILITY OF THE
PRODUCT OR ITS FITNESS FOR A PARTICULAR PURPOSE (EVEN IF EVONIK IS AWAREOF SUCH PURPOSE), OR OTHERWISE.
EVONIK SHALL NOT BE RESPONSIBLE FORCONSEQUENTIAL, INDIRECT OR INCIDENTAL DAMAGES (INCLUDING LOSS OFPROFITS) OF ANY KIND.

It is the customer’s sole responsibility toarrange for inspection and testing of all products by qualified experts. Reference to trade
names used by other companies is neither arecommendation nor an endorsement of thecorresponding product, and does not imply
that similar products could not be used.
® = registered trademark

Gewerbepark 44861 Schörfling
Austriaphone +43 7672 701-2891
fax+43 7672 96862
sepuran@evonik.com
www.sepuran.com
www.evonik.com

01/GR/500/en

Evonik Fibres GmbH