SEPURAN® NobleMembrane technology forefficient hydrogen generation

EVONIK, THE CREATIVEINDUSTRIAL GROUP FROMGERMANY, IS ONE OF THE
WORLD LEADERS IN SPECIALTYCHEMICALS, OPERATING IN
THE NUTRITION & CARE,RESOURCE EFFICIENCY ANDPERFORMANCE MATERIALSSEGMENTS.

The Resource Efficiency segmentsupplies high performance materials
such as high performance polymers
for environmentally friendly andenergy-efficient system solutions;
we ensure sustainability – in businessand everyday life.
SEPURAN® stands for customized
hollow fiber membranes for efficient
gas separation. The SEPURAN® Noble
membrane has been especiallydeveloped for hydrogen recovery
and purification enabling highly purehydrogen to be efficiently produced
even when inlet concentrations ofhydrogen are very low.
Evonik. Power to create.

SEPURAN® NOBLE
VALUE CHAINEVONIK
BUSINESS
Monomer

Polymer

Membrane

Module/Cartridge System

EVONIKTECHNOLOGYSUPPORT
OEM
Partner

APPLICATIONS
Onshore applications
with dedicated partners

HYDROGEN
GENERATION
Our Products

SEPURAN® Noble4”

Stainless steel housings

SS316

SS316

SS316

Trans membrane pressure

40 bar / 580 psi

25 bar / 362 psi

80 bar / 1160 psi • 70 bar/1015 psi

Temperature< 70 °C / 158 °F< 70 °C / 158 °F< 50 °C / 122 °F • < 70 °C / 158 °F

Cartridge

6”

Recovery advantages

Overall features• Hydrogen revovery of more

• Low space requirements

than 90 percent possible

Cartridge• Continuous separation process• Simple modular setup

Upgrading advantages• Flexible and easily expanded• High selectivity• No other auxiliary materials, such as• Low energy consumption

water and sorbents, required• No emissions into the environment

8”

Cartridge

CO2O2CON2CH4feed

fastslow

retentate

H2MODE OF OPERATION
OF A SHELL SIDE MEMBRANE
FOR GAS SEPARATION

feed

H2O HeMODE OF OPERATION
OF A BORE SIDE MEMBRANE
FOR GAS SEPARATION

permeate

RELATIVE PERMEATION RATESOF VARIOUS GASES

retentatehollow fiber
membranes

permeatehollow fiber
membranes

How do the membranes work?
Gas separation membranes work on the principleof selective permeation through a membranesurface. The driving force for permeation of thegas through the membrane is the difference
between the partial pressures of the gas onthe retentate side and the permeate side.

The greater this difference, the higher the proportionof the gas that permeates through the membrane.
In a separation, such as between hydrogen andnitrogen, permeation of carbon dioxide through themembrane is much faster while nitrogen is retained
within. The driving force required for the separation
is obtained through a partial pressure gradient.
The permeation rate of each gas depends on its
solubility in the membrane material and on thediffusion rate.

Gases that have higher solubility and smallermolecular size permeate the membrane fasterthan larger, less soluble gases. The ratio of thetransport speeds of two gases is called selectivity.
The higher the selectivity, the higher the energy
efficiency of the resulting membrane process.
Different membrane materials have different
separation properties.

This information and all technical and otheradvice are based on Evonik’s present knowledge and experience. However, Evonik assumes no liability for such information or advice,including the extent to which such information or advice may relate to third party intellectual property rights. Evonik reserves theright to make any changes to information oradvice at any time, without prior or subsequent notice.
EVONIK DISCLAIMS ALL REPRESENTATIONS AND WARRANTIES, WHETHEREXPRESS OR IMPLIED, AND SHALL HAVENO LIABILITY FOR, MERCHANTABILITY
OF THE PRODUCT OR ITS FITNESS FOR A
PARTICULAR PURPOSE (EVEN IF EVONIKIS AWARE OF SUCH PURPOSE), OR OTHERWISE. EVONIK SHALL NOT BE RESPONSIBLE
FOR CONSEQUENTIAL, INDIRECT OR INCIDENTAL DAMAGES (INCLUDING LOSSOF PROFITS) 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

phone +43 7672 6006-0
sepuran@evonik.com
www.sepuran.com
www.evonik.com

Evonik Corporation
High Performance Polymers
299 Jefferson Road
Parsippany, NJ 07054
United States

Evonik Specialty Chemicals(Shanghai) Co., Ltd.
55 Chundong Road
Xinzhuang Industry Park
Shanghai 201108

phone +1 973 929-8000
01/en

Evonik Fibres GmbHGewerbepark 44861 Schörfling
Austria