Silica Gel For Variable Pressure Absorption

Silica Gel For Variable Pressure Absorption

Variable pressure adsorption silica gel is transparent or semitransparent glassy in substance. Its chemical molecular formula is mSiO2.nH2O with stable chemical property, no toxin and no special odor, possessing some similar characteristics with fine-pored silica gel, while its selective absorbing performance is better than fine-pored silica gel, possessing fast absorption and dehydration.

Pressure swing adsorption (PSA) is one kind of high-tech to separate and purify air; mainly used for recycle, separating and purifying carbon dioxide in synthetic ammonia industry, food, beverage processing industry, as well as drying, damp proofing and dehydration of organic products, etc.

By adopting special adsorbent production techniques, we can precisely control the pore diameter and pore volume of the silica gel, so as to change its superficial physical properties. This provides the adsorbent silica gel with advantages like huge adsorption volume, fast adsorption and desorption speed, strong adsorbent selectivity and high separation coefficient.


Items Standard Value Sphere of Measurement
Variable Pressure Absorption Silica Gel Ordinary silica gel (Type A)
Adsorbing capacity RH=20%,≥ 10.0 12-14 10-12
RH=50%,≥ 24.0 28-30 25-27
RH=90%,≥ 35.0 37-40 36-38
Size (mm) 1-5 1-3 /2-5 1-3/ 2-4 /3-5
Bulk Density (g/ml)≥ 0.75 0.78 0.75
Content of SiO2, %≥ 98.0 98.5 98.0
Abrasion Rate, % ≤ 5.0 0.9 1.2
Specific Surface Area, m2/g≥ 600 750 600
Adsorption Capacity of CO2, ml/g≥ 20.0 24
Qualification Rate of Globular Particles, % ≥ 82 95 95

1-3mm, 2-5mm

20kg or 25kg each compound bag (or woven bag), 500kg or 800kg each flexible freight bag.

Packing and size of the adsorbent silica gel are customizable.

The main ingredient is silicon dioxide.