Silica Gels

Silica gels are essential adsorbents in many gas and compressed air drying applications. Compared to activated alumina and zeolites, these generally consume less energy in water desorption and are resistant to most acids. For standard applications, we provide silica gels of high water adsorption capacity, and our product portfolio also includes a water-resistant product and a type with indicator properties (deep orange > transparent color modification). With silica gels, the desorption of water adsorbed occurs at a temperature of approximately 150 °C / 300 °F.

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Satrugna Vinjarapu

Sales Engineer
+49 201 24 89 848
satrugna.vinjarapu@carbotech.de

ACTIVATED ALUMINAS

Compared to silica gels, activated alumina feature an increased mechanical hardness, and are much more resistant to alkaline components and liquid water. With air dessication, they are primarily used if the air to be dryed contains alkaline components or when challenging streaming conditions need to be safely controlled. Hydrophilic organic substances can also be simply collected using activated alumina.

The two CarboTech products feature virtually comparable adsorption properties but differ in their density, and therefore especially in terms of abrasion resistance.

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Satrugna Vinjarapu

Sales Engineer
+49 201 24 89 848
satrugna.vinjarapu@carbotech.de

ZEOLITIC MOLECULAR SIEVES

CarboTech provides zeolitic molecular sieves specifically for the drying of air and compressed air and also for oxygen generation. As with silica gels, separation depends on the equilibrium effect and not on a kinetic effect as in the case of carbon molecular sieves. Zeolitic molecular sieves feature a uniform pore width allowing selective adsorption processes in accordance with the specific type.

In air separation via pressure swing adsorption, the equilibrium load of several zeolites (13X types, Na- and Li-exchanged) with nitrogen is significantly higher than with oxygen and argon. In this way, oxygen can be generated with a purity of up to 95 %, whereby argon mainly constitutes the residual share in the product gas stream.

If zeolitic molecular sieves (types 3A, 4A, 5A) are used in air drying, particularly low pressure dew points can be achieved. In addition, these sieves are also suitable for effective gas desiccation with higher process temperatures. The molecular sieves are desorbed via cold regeneration or heating to a maximum of 380 °C/700 °F.

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Satrugna Vinjarapu

Sales Engineer
+49 201 24 89 848
satrugna.vinjarapu@carbotech.de

Catalysts

CarboTech catalysts are manufactured as mechanically highly stable g-aluminum oxides and are available for the air and compressed air industry in the following applications:

Pd catalysts

  • Removal of oxygen from nitrogen and inert gasses

Pt/Pd catalysts

  • Ethylene destruction
  • Hydrogen and carbon monoxide separation at low temperatures (ambient temperature)
  • Oxidation of hydrocarbons and decomposition of ozone

Pt catalysts

  • Separation of hydrogen and carbon monoxide from air and inert gases
  • DeNOx applications
  • Removal of oxygen from gasses containing hydrogen
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Satrugna Vinjarapu

Sales Engineer
+49 201 24 89 848
satrugna.vinjarapu@carbotech.de

CERAMIC BEADS / COCONUT MATS

Ceramic beads from CarboTech are used in adsorption technology as bed carriers and feature the following properties:

  • low pressure drops
  • mechanically indestructible
  • inert to chemical attacks
  • no water adsorption
  • no participation in adsorptive exchange processes.

The CarboTech product portfolio includes two different types of beads:

  • Aluminum oxide ceramics containing SiO2: medium density, with operating
    temperatures to approx. 1,000 °C
  • Pure aluminum oxide ceramics: high density, with operating temperatures to a maximum of 1,800 °C and extremely low water adsorption capacity

CarboTech coconut mats on the other hand are often used for upper bed fixation. They feature a highly pronounced stiffness and can exert considerable spring forces via compression on the activated carbon bed, and thus reliably hold the bed in position even with changing streaming or pressure loads.

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Mitarbeiter02

Satrugna Vinjarapu

Sales Engineer
+49 201 24 89 848
satrugna.vinjarapu@carbotech.de