Silica Gel For Variable Pressure Absorption

Silica Gel For Variable Pressure Absorption


Variable pressure adsorption silica gel is transparent or semi transparent glossy in substance. It has a stable chemical property and the chemical formula mSiO2.nH2O. Silica gel has no toxin and no special odor. It possesses some similar characteristics with fine-pored silica gel, while its selective absorbing performance is better than fine-pored silica gel.

Applicable for pressure swing adsorption (PSA). It is one kind of high technology for air separation and purification; mainly used for recycling, separating and purifying carbon dioxide in synthetic ammonia production, food processing, beverage industry, and drying, moisture protection 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.