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Application:
Widely used as underlying packing material for the hydro cracking systems, refining systems, CRCC systems, isomer zing systems and demethylating systems of petrochemical plants, chemical fiber plants, alkyl benzene plants, aromatic plants, ethylene plants and natural gas plants, and as the supporting or covering material for catalysts, molecule sieves and dryers inside reactors and packing material for towers. The primary purpose is to increase the gas or liquid distribution points, and support and protect less strong active catalysts.
Chemical composition
Al2O3(%)
92
95
99
Fe2O3(%)
≤0.4
≤0.3
≤0.1
The remaining ingredients can be determined by negotiation between the supplier and the buyer as necessary.
Water absorptivity (%)
3±1.Can also be negotiated
Proportion（kg/m³）
≥3.1
≥3.2
≥3.4
Bulk density（kg/m³）
1700-1950
1800-1950
≥1900
Dust, cracking or breaking
Single bag less than 5%
Size deviation
Uniform sphere, the ratio of the maximum and minimum diameter of a porcelain ball does not exceed 1.2
Load softening（yb/t370-1995）
Less than 0.6% deformation under 0.2 Mpa
Thermal shock resistance
(yb/t376.2-1995）
1200℃ reduced to 600℃, 10 times no cracks on the surface
Reheating heat change
(gb/t3997.1-1998)
1400℃ for 12 hours with a maximum of 0.25% and an average of less tahn 0.20%
