Zeochem Molecular SievesThe Right Choice

For Air Prepurification

Zeochem Z10-02

Zeochem Molecular SievesThe Right Choice

For Air Separation Units

Messer ASU in Duisburg/Ger (115 tons MS)

Messer ASU in Gelsenkirchen/Ger (115 tons MS)

Zeochem Z10-02Zeochem Z10-02Air Prepurification GradeAir Prepurification Grade

• High static CO2 Capacity

• High dynamic CO2 Capacity

• Fast Adsorption and Desorption Kinetic

• High Density

• High Crush Strength• Low Attrition• Exceptional Hydrothermal Stability

Zeochem Z10-02Air Prepurification Grade

• High Static CO2 Capacity at Low Partial Pressure

• CO2 capacity higher than leading competitors

especially at low partial pressures

• Exceptional consistency from lot to lot

Zeochem Z10-02Air Prepurification Grade – CO2 Adsorption Statistics in 1999

11

12

13

14

0 55 110 165Batch Numbers in 1999

CO

2-A

ds

orp

tio

n [

%]

Spezifikation Z10-02

Z10-02

Zeochem Z10-02Air Prepurification Grade–CO2 Adsorption Statistics in 2001/2002

11

12

13

14

0 24 48 72Batch Numbers in 2001/2002

CO

2-A

ds

orp

tio

n [

%]

Spezifikation Z10-02

Z10-02

Zeochem Z10-02 Comparison of CO2 Adsorption on 13X Types

0

2

4

6

8

10

12

14

16

0 10 20 30 40 50 60 70

Z10-02 IMPROVED 2002

Z10-02

Z10-01

Competitive APP sample I

Competitive APP sample II

Zeochem Z10-02EPA New Generation Product For APP and PSA O2 Applications

Z10-02/Z10-02EP: Mass Transfer Zone Length on CU Pilot Unit

30

40

50

60

70

80

90

100

1 1.5 2 2.5 3

mean particle diameter [mm]

MT

Z (

Sh

aw

) [m

m]

Z10-02EP

Z10-02

Zeochem Z10-02CO2 Breakthrough Time

- Test tubes: 30.5 mm diameter/400 mm bed height

- Approx. 200 g molecular sieve- Temperature: 25°C- Operating Pressure: 6 bar absolute- Test gas: 450 ppm CO2 in 2400 Nl/h nitrogen- Breakthrough time: minutes to 5 ppm CO2 at

outlet

Zeochem Z10-02CO2 Breakthrough Time

0

50

100

150

200

250

300

350

0 50 100 150 200 250 300

Z10-02 (1999): typical 125 min

Z10-02 (2001): typical 165 min

Z10-02 (2002 improved): typical > 200 min

Zeochem Z10-02

• Density Advantage

• Density of Z10-02 is higher giving more capacity per unit volume in existing plants

• Z10-02 density = 660 kg / cu meter• Competitive density = 615 kg / cu meter

• Advantage = 7.3 %

Zeochem Z10-02

Competitor 1/8" Pellets, Zeochem 2.5 - 5 mm Beads

Zeochem 1.6 – 2.6 mm Beads, Competitor 1/16" Pellets

Zeochem Z10-02Air Prepurification Grade

Crush Strength

– Physical strength of bead/extrudate under compressive

stress

– Test measures the force required to crush beads/extrudates

– Simulates the compressive forces acting on the material in

service

– All Z10-02 manufacturing lots are tested for crush strength to

ensure long life in the field

Zeochem Z10-02Air Prepurification Grade

Crush Strength• Zeochem’s proprietary bead forming and calcination

processes yield exceptionally high crush strength, typically in

excess of 2.5 kp for 1.6 – 2.6 mm beads

• Spherical beads give a higher packed bed crush strength than

comparable extrudates, since compressive forces are

distributed more evenly

• Spherical beads have no sharp edges (cylindrical extrudates

do) which can easily break off

Zeochem Z10-02Air Prepurification Grade

Attrition– Tendency for material from bead/extrudate to attrit from

friction against other beads or surfaces

– Test measures the amount of fines produced by attrition

– Simulates the movement of beads/extrudates against each

other during thermal swings

– All Z10-02 manufacturing lots are tested for attrition strength

to ensure long life in the field

Zeochem Z10-02Air Prepurification Grade

Attrition %

material lost as fines*

• Zeochem Z10-02 1.6 – 2.6 mm bead 0.05

• Competitor 1/16" extrudate 0.20

• In Zeochem standard attrition test (method Si5/45)

Zeochem Z10-02Air Prepurification Grade

Hydrothermal Stability– Ability of the material to maintain high adsorption capacity

after exposure to high heat and humidity

– Test measures the retained capacity after accelerated aging in

a hot, humid environment

– Simulates the loss in crystallinity resulting from thermal

regeneration cycles to which the material is exposed in

operation

– Z10-02 manufacturing runs are tested for hydrothermal

stability to ensure long life in the field

Zeochem Z10-02Product Analysis

Kinetics

Dust

CO2 Capacity

Crush

CO2 Breakthrough

Zeochem Z10-02Air Prepurification Grade – Product Analysis

• X-Ray powder diffraction

• elemental analysis

• scanning electron microscopy

• kinetic measurement [CO2 breakthrough time on TGA ]

• hydrothermal stability test

• bulk density [g/l] on the CoA

• under- and oversize [max. 5 %] on the CoA

• attrition [%] on the CoA

• crush strength [kp] on the CoA

• residual water [%] on the CoA

• CO2 adsorption [%] on the CoA

Zeochem Z10-02Air Prepurification Grade – References

• Air Liquide - Paris France• Air Liquide - Houston USA• Air Liquide - Western Australia• Air Liquide - Canada• AGA – Sweden• Hydrogas - Norway• Air Products – USA, England,

Germany, S. Africa, Holland• Carburos Metallicos, Spain• GAS, S. Arabia• Amoco - USA

• Carbagas - Switzerland• Asarco - USA• Canadien Liquide Air - Canada• Arco – USA• PEMEX – Mexico• Tecno Project – Italy• Socsil – Singapore• Kroman Celik – Turkey• Messer Griesheim – Germany• NFL – India• Jindal Strips India

Zeochem Z10-02Air Prepurification Grade – Big ASU Units

• Air Liquide, FIPG, Exxon Mobil, Singapore 93'600 kgSibelius, Belgium 93'600 kgAntwerp, Belgium 93'600 kgAngang, China 92'000 kgBLNG, Bintulu, Malysia 128'280 kg

• Air Products, UKRustenburg, S. Africa 28'000 kgCarburus Metallicos, Spain 35'000 kgGAS, Sabic, S. Arabia 48'000 kg

• Messer Griesheim, GerDuisburg, Germany 116'000 kgGelsenkirchen, Germany 116'000 kg