Alcohol dehydration

Zeochem AG offers high performance products for a wide range of applications:

ZEOCHEM® Z3-03 is the Ethanol Grade Molecular Sieve to dehydrate Ethanol 99.9 % pure Ethanol.

ZEOCHEM® Z3-01 shows very good adsorption properties for moisture in liquide phase dehydration of alcohol. Usually small beads of 1-2 mm or 2-3 mm are used.

Smaller beads have generally a better (faster) kinetic, but also a slightly higher pressure drop over the molecular sieve bed.

Brake air drying

Zeochem AG produces Molecular Sieves specially developed for applications such as:

• Air drying for compressed air, plastic chips, for sterile environments, sensitive instruments etc.
• Air Brake drying

There is an extremely high technical and quality demand to such types of Molecular Sieves. Therefore these types of products guarantee for thousands of cycles under extreme conditions, combined with a stable adsorption capacity over a long lifetime.

Zeochem AG is one of the leading manufacturers of Molecular Sieves which are used in air brake cartridges in trucks, buses and locomotives, world-wide. Our product is your profit in terms of:

• High physical stability (high crush strength und low attrition).
• Excellent adsorption kinetics
• High water equilibrium capacity to secure a low dew point

Products & Application

ZEOCHEM® Z4-01 Air drying in general

ZEOCHEM® 4A-8BL Air Brake drying

Catalyst carrier

HPZ (High Performance Zeolites)

Zeochem AG manufactures Hig Performance Zeolites (HPZ) of a wide range. This product line is worldwide available under the brand ZEOcat® and ZEOflair®

We engineer tailer made products on a contractual basis and upon demand. For the kind of specific request please contact us.

ZSM-5 and Mordenite types are all available as powder, whereas some types are also availabe in beaded form. We reommend you to download the brochures from our website to get at least some basic information about the products.

Industrial gases

ZEOCHEM® Z10-02 is the preferred product on performance grounds for CO2 removal in air pre purification units.

® Z10-02ND is the product for demand of long CO2 break through time.

ZEOX Z10-04 is installed in PSA Oxygen units to produce concentrated oxygen from air.

ZEOCHEM® Z10-05-03 is the latest version of Lithium X zeolite to be used in VPSA plants.

ZEOCHEM® Z4-01 finds its application for the drying of inert gases, CO2 or air

Please ask for technical data sheets and support for the use of the a.m. products.

Medical gases

Medical gases and -oxygen

Zeochem AG offers high performance products for a wide range of applications:

ZEOCHEM® Z10-02 is the preferred product on performance grounds for CO2 removal in air pre purification units ZEOCHEM®

ZEOX® Z10-04 is installed in PSA Oxygen units to produce concentrated oxygen from air.

ZEOCHEM® ZEOX Z12-07 is the Li-LSX version for small scale oxygen units for the production of high purity oxygen.

ZEOX® OII was developped especially for the use in small scale medical oxygen concentrators.

Please ask for technical data sheets and support for the use of the a.m. products.

Natural Gas Drying and purification

Zeochem AG offers a range of Molecular Sieves for drying- and treating processes of natural gas and natural gas liquids, thus setting a new scale for the various applications in terms of quality and performance in fields such as natural gas sweetening for removal of H2S and mercaptans to meet sales gas specification, sour gas drying etc.

Products and Application

ZEOCHEM® Z4-04 and ZEOCHEM® Z3-04 (USA Z3-06) are acknowledged product-leaders in the dehydration of natural gas around the world. Both products combine a high adsorption kinetics with excellent thermal und physical stability giving a long lifetime.

ZEOCHEM® Z10-01 is successfully used for the removal of moisture, sulphur compounds and carbon dioxyde from natural gas streams. This Zeochem patented process has pushed ahead the technology of the use of molecular sieve in this field.

ZEOCHEM® Z5-03HP can minimise the formation of COS during natural gas treating applications.

Which Type of Molecular Sieve should I use?

Due to the manifold application and requirements, sometimes a combination of Molecular Sieves is recommendable (e.g. Z4-04 in combination with Z10-03 in SM/EB plants)

Please contact our product specialists for support.

Oxygen production

production by PRESSURE SWING ADSORPTION (PSA)

Oxygen is produced in large volumes for many applications. Perhaps the commonest of these are in medicine and in the pulp and paper industry. There are two methods used for doing this: cryogenic and pressure swing adsorption. Pressure swing adsorption is most useful for small applications such as oxygen production in the home for asthma sufferers.

Pressure swing adsorption relies on air being filtered through aluminosilicate minerals known as zeolites. The one used for PSA oxygen has been specially designed so that nitrogen gas is adsorbed onto it while oxygen (and argon) pass straight through. The zeolite is quickly saturated with nitrogen, so two zeolite beds are usually used together, one filtering air while the other is regenerated. This process is very environmentally friendly and the technique is also potentially able to be used to remove other gases (such as CO2) from industrial waste gas streams.

Zeochem AG offeres a full range of zeolites on ion basis, such as NaX, LiX and Li-LSX for the best possible customer solution. Since the application in huge for medical oxygen concentrators and industrial units as well (e.g. for fish farming, gold mines, etc) please contact our specialists.

ZEOX® Z10-04 is installed in PSA Oxygen units to produce concentrated oxygen from air.

ZEOCHEM® Z10-05-03 and ZEOX Z12-07 are Li-LSX version for both, industrial and small scale oxygen units. (both are for the production of high purity oxygen)

ZEOX® OII was developped especially for the use in small scale medical oxygen concentrators.

Please ask for technical data sheets and support for the use of the a.m. products.

Petrochemical Industry

Petrochemical Industry / Cracked Gas Industry

Products and Application

ZEOCHEM® Z3-02 is used for the dehydration of unsaturated hydrocarbon gas streams in olefin crackers prior to cryogenic separation process. The same grade is also used in polyolefin plants where dehydration is required for catalyst protection.

ZEOCHEM® Z10-03 is used in SM/EB plants for catalyst protection

ZEOCHEM® Z10-03 is the grade for the removal of oxygenates in polyolefin plants

ZEOCHEM® Z10-02 Purification of air and synthesis gases (CO2 removal)

ZEOCHEM® Z4-01 Drying and removal of hydrocarbons from ammonia synthesis gas

ZEOCHEM® Z3-02 Drying of unsaturated hydrocarbons

ZEOCHEM® Z5-01 PSA separation of n-and i-paraffins

ZEOCHEM® Z5-03HP PSA purification of Hydrogen

ZEOCHEM® Z5-01 or Z4-01 is also used for the removal of methanol from gaseous streams.

® Z4-01 and ZEOCHEM® Z3-01 are used in many dehydration applications eg:

LPG (Liquefied Petroleum Gas) drying or for the drying of C3- to C6 liquids, organic solvents etc. Beads with a size of 2-3 mm are used for dehydration.

Z10-01/1-2 mm is often used where treating (sulphur compound removal) is also required.

Zeochem AG also offers HP products for even better performance. We will be happy to support you in finding your optimum solution.

Polyurethanes (as additives)

PURMOL® is a hydrophilic Molecular Sieve Powder

PURMOL® from Zeochem AG are molecular sieve powders and pastes which give the answer to moisture scavenging problems for a variety of applications. Types 3A and 4A are available in standard versions or synthesized and treated for special applications. (3STH and 4STH).

PURMOL® is available as Paste, including 50% castor oil

Some grades can even be used in the cosmetic field (face masks) or as additive in ointments (warming up)

Characteristics

PURMOL® adsorbents are synthetic zeolites with a complex alkali metal alumino-silicate structure.

This structure contains pore openings of regular and precisely defined size, allowing the adsorption of molecules selectively on the basis of their size and polarity.

Benefits

PURMOL® is largely used to remove moisture from polyurethane polymer systems.

PURMOL® products deal with moisture problems without causing undue problems with shelf-life viscosity etc. Other types are used as additives for selective adsorption in defined polymer systems, e.g.

• Coatings
• Sealants
• Caulks
• Adhesives
• Pigment and Solvent Drying
• Insulating Glass Rubber Profiles
• Paper Manufacturing
• Cosmetis and pharmaceutical applicatins

Other Applications

In addition, Purmol products may be added to adsorb contaminants such as carbon dioxide, hydrogen chloride, etc. from plastic formulations. They can also function as a carrier to release catalysts into certain systems.