Почему осушение?
The maximum water vapor content of a compressed air volume unit is caused by the temperature of the compressed air and is almost completely independent of its pressure. The water vapor content is therefore theore-tically represented by the dew point, which indicates the temperature at which the actual water vapor quantity corresponds to a relative humidity of 100% and below which condensation begins.
Drying in this context means a reduction of the dew point below the actual operating temperature. To obtain ultra-dry air (ISO 8573.1 class 1, 2 or 3), essentially only the process of adsorption, in which water is bound to a solid phase, is suitable. Adsorption is thereby defined as the attraction of a substance (the adsorbate) to the surface of a solid body (the adsorbent) via physical binding forces. Desorption, on the other hand, refers to the release of the adsorbate from the adsorbent. Since the adsorption capacity of adsorbents decreases with increasing temperature and decreasing pressure, moisture can be desorbed again by heat supply or pressure reduction.
The adsorbents used in such a drying process are high-tech desiccants and have an inner surface area of up to 1000 m2/g, due to their pore structure of macro-, meso- and micropores, where condensed water vapor can accumulate. For the drying of compressed air, silica gels, aluminum oxides (activated alumina) and zeolitic molecular sieves are most commonly used. These desiccants reach dynamic adsorption capacities above 20% by weight and dew points down to -100 °C.
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Prosorb N
Sulfur Guard Bed Adsorbent
BASF Prosorb N, used as sulfur guard beds for naphtha reformers and isomerization units, is a next generation Nickel based adsorbent which provides significant performance improvement for removal of trace levels of various sulfur species
BASF Prosorb N is produced as special high surface area star-shaped extrudates with a nominal diameter of 1/16” (1.6 mm). It is delivered prereduced and passivated.
Prosorb N boasts higher sulfur capacity includingup to 50% higher removal for thiols and up to 100% higher removal efficiencies for thiophene as compared to competitive Ni based guard beds. Typical operating temperatures range from 140-170°C.
BASF Prosorb N is produced as special high surface area star-shaped extrudates with a nominal diameter of 1/16” (1.6 mm). It is delivered prereduced and passivated.
Prosorb N boasts higher sulfur capacity includingup to 50% higher removal for thiols and up to 100% higher removal efficiencies for thiophene as compared to competitive Ni based guard beds. Typical operating temperatures range from 140-170°C.
Value drivers
Protects downstream equipment and maximizes mileage as well as yield of downstream catalysts
Non-selective removal of sulfurs with very high capacity
Longer bed life compared to competitive materials, requiring fewer costly changeouts which require downtime
Higher capacity and better performance compared to Cu based adsorbent, without running the risk of Cu leaching
Table 1
| Typical properties | |
| Ni, wt % | ~ 56% |
| Surface area, m2/g | ~ 185 |
| Packed average bulk density,kg/m3(lbs/ft3) | ~ 800 (~ 50) |
| Bulk crush strength | ~ 0.9 mpa (~131 psi) |
Pre-Treatment
Prior to start-up, the bed must be activated byremoving the passivation. This can be performed via hydrogen activation, nitrogen activation, or by using the feed to be treated (hot oil activation). Maximum performance is achieved via hydrogenactivation at temperatures of 150 – 180°C.
Packaging
Steel drum, 125 kg (275 lbs) net
Shipping Point
De Meern, The Netherlands
Relative Capacity of Prosorb N vs Competition
Контакты
+7 (499) 608-10-15
Московская обл., Ленинский р-н, с. Беседы, Промышленный проезд, дом 7
Московская обл., Ленинский р-н, с. Беседы, Промышленный проезд, дом 7