Petrify
Petrochemical Industry
Petrochemical units (catalytic cracking, reforming furnaces, gasifiers, etc.) typically operate at temperatures of 800-1600°C and are subject to hydrocarbon erosion, alkaline steam corrosion, and thermal stress shock. The following are refractory system solutions for different units, along with key technical parameters and application points:
| Device /part | Working conditions challenges | Preferred material options | key performance indicators |
| FCC regenerator | 750℃, catalyst flushing + steam |
Phosphate bonded corundum castables Corundum mullite castables |
Compressive strength ≥80MPa(110℃×24h) |
|
Al2O3≥90%, SiO2≤5% Al2O3≥75%, |
Wear resistance ≤6cm³(ASTM C704) |
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| Ethylene cracking furnace radiation section | 1200℃Hydrocarbon cracking + thermal shock | High-purity alumina fiber module |
thermal conductivity ≤0.12W/m·K(1000℃) |
| Contains 5% ZrO2 reinforcement | Thermal shock stability ≥50 times (1100℃ water cooling) | ||
| Coal gasification furnace slag mouth area | 1600℃, dynamic erosion of slag (FeO/CaO/SiO2) |
Chrome corundum brick gradient composite lining Magnesium-aluminum spinel brick + andalusite composite layer |
Cr2O3 content: working surface 30% → transition layer 15% |
| Surface laser cladding SiC-ZrB₂ coating | Anti-slag penetration depth ≤0.8mm (1650℃/24h) | ||
| Coke tower dome | 500℃, periodic heating + sulfur corrosion | Nanoporous thermal insulation composite system stainless steel fiber reinforced vermiculite castable | Hot surface: stainless steel fiber reinforced castable (δ=150mm) |
| Thermal insulation layer: SiO₂ aerogel felt (δ=50mm,λ=0.03W/m·K) |
White fused alumina、High-density white fused alumina、Tabular alumina、AM-75 Fused magnesia-alumina spinel AM75、Fused Mullite、calcium hexaaluminate
（CA6）、Reactive Alumina Powder、Fused Calcium Aluminate Cement、Bubble Alumina、Dispersing Alumina，The above raw materials of our company have served many related enterprises.
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