Using activated alumina: activated alumina ball having a plurality of capillary channels, a large surface area, can be used as an adsorbent, desiccant, catalyst carriers. Also according to the polarity of the adsorbed species to determine the strength, water, oxides, acetic acid, alkali or the like having a strong affinity, is a micro water depth of desiccant, adsorbent is adsorbed polar molecules. Common Specifications: 1-3mm, 2-4mm, 3-5mm, 4-6mm, 5-8mm etc. Technical Specifications Item Specification Standard (mm) Φ2-3, Φ3-5, Φ4-6 appearance of brown particles Bulk density (g / cm3) 0.68-0.72 Strength (N / tablets) 50-90 static adsorption capacity (RH60%) 24 Wear (%) ≤0.3 4A molecular sieves of the formula is Na2O Al2O3 2.0SiO2 4.5H2O, silica to alumina ratio:??? aperture SiO2 / Al2O3≈24A molecular sieve 4A, adsorbed water, methanol, ethanol, hydrogen sulfide, sulfur dioxide, carbon dioxide, ethylene any molecule, propylene, does not adsorb diameter greater than 4A (including propane), selective adsorption of water than any other molecules. Is one of the industry largest amount of zeolite species of. Is the most common adsorbent. Technical standards: Indicators Unit technical standards ΑL2O3% ≥93 SiO2% ≤0.10 Fe2O3% ≤0.04 Nα2O% ≤0.45 Loss on ignition% ≤8.0 Bulk density g / ml 0.68-0.75 m surface area / g ≥280 ml pore volume / g 0.38-0.42 static adsorption capacity% 17 ± 1% ≥55 crystalline phase absorption / xp ΑL2O3 crushing strength N / grain dryers ≥180 ASU molecular sieve: because at high temperatures or low relative humidity conditions , has the ability to adsorb water is much larger than other adsorbents. 4A molecular sieve and activated alumina ball with the use of a particular type of dryers in large part to improve the dew point, in order to meet customer demand. Activated alumina and molecular sieve adsorbents are commonly used adsorption dryer. Both water vapor adsorbent has a strong adsorption capacity. Activated alumina is also integrated with a number of excellent physical and chemical properties, and therefore the vast majority of situations is the preferred adsorption dryer. Especially in the absence of thermal regeneration, activated alumina almost get compressed air pressure dew point -40 ℃ about course selection. However, the adsorption capacity of the adsorbent at low moisture environment far less sieve, so in a very dry air (pressure dew point below -60 ℃) will come in handy when you get sieve. However, mechanical strength and resistance to molecular sieve droplets performance is far from ideal, and therefore it is often combined with the use of an alumina together to obtain the best results. Regardless of the occasion for all the selected molecular sieve desiccant adsorption is not it a good policy. Factory direct, two-year warranty, large favorably URL: http: //www.zblvfen.com Alibaba: http: //kaiouhg.1688.com Contact: Ma Xuan Tel: 0533-3811110 13964309730