Segmented Honeycomb for RTOs

Drop-in replacement with enhanced reliability and cost advantage

Lantec's Segmented Honeycomb delivers the same heat transfer performance as conventional honeycomb monolith while solving two persistent problems: thermal shock failure from temperature cycling, and the cost premium of traditional monolith extrusion. The segmented architecture distributes thermal stress across independent pieces and enables more economical manufacturing — a combination that reduces both purchase cost and lifetime maintenance.

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Same Performance, Better Economics

Segmented Honeycomb provides identical heat transfer geometry to conventional honeycomb monolith: same cell counts (25, 40, 43, 50, 60, etc.), same pressure drop characteristics, same thermal efficiency at equivalent bed depth. The difference is manufacturing architecture and what it enables.

Traditional monolith extrusion produces large continuous blocks. Segmented Honeycomb produces smaller independent pieces that stack into equivalent beds. The thermal performance is identical. The manufacturing economics are fundamentally different.

Thermal Shock Protection

Conventional monolith concentrates thermal stress across single large blocks. When temperature gradients exceed ceramic's tolerance, cracks propagate through the entire piece.

Segmented architecture distributes thermal zones across independent segments. Each segment handles its own thermal gradient. A segment that cracks doesn't compromise adjacent segments. The bed continues operating while individual pieces are replaced during scheduled maintenance rather than emergency shutdown.

Plugging Resistance

Long monolith channels accumulate particulates progressively. Segmented design creates natural mixing zones at segment interfaces where turbulence disrupts particle accumulation pathways. The shorter individual flow paths reduce the opportunity for channel plugging.

Cost Advantage

Segmented manufacturing is more economical than traditional monolith extrusion. This advantage has become more pronounced as European honeycomb costs have increased approximately 30% due to tariff effects. Segmented Honeycomb offers equivalent performance at meaningfully lower delivered cost for North American installations.

Key Benefits

Equivalent heat transfer performance — Same cell densities, pressure drop, and thermal efficiency as conventional honeycomb
Enhanced thermal shock protection — Distributed thermal zones prevent crack propagation across bed sections
Improved plugging resistance — Segment interfaces create turbulent mixing zones that disrupt particle accumulation
Significant cost advantage — Manufacturing innovation and favorable trade positioning reduce delivered cost
Standard configurations — Available in all conventional cell densities (25, 30, 40, 43, 50, 60, etc.)

Performance Data & Literature

Case Studies

Technical Specifications

Segmented Honeycomb Physical Properties — British Units

Property	SHC-25	SHC-40	SHC-43	SHC-50
Cell Count	25 × 25	40 × 40	43 × 43	50 × 50
Module Size (in)	5.9 × 5.9 × 3.0 or 5.9 × 5.9 × 5.9	5.9 × 5.9 × 3.0 or 5.9 × 5.9 × 5.9	5.9 × 5.9 × 3.0 or 5.9 × 5.9 × 5.9	5.9 × 5.9 × 3.0 or 5.9 × 5.9 × 5.9
Heat Capacity (BTU/ft³·°F)	10.0	10.9	10.9	11.3
Weight (lb/ft³)	41	44	44	46
Void Fraction (%)	72	70	70	68
Maximum Working Temp	2,025°F	2,025°F	2,025°F	2,025°F

Segmented Honeycomb Physical Properties — Metric Units

Property	SHC-25	SHC-40	SHC-43	SHC-50
Cell Count	25 × 25	40 × 40	43 × 43	50 × 50
Module Size (mm)	150 × 150 × 75 or 150 × 150 × 150	150 × 150 × 75 or 150 × 150 × 150	150 × 150 × 75 or 150 × 150 × 150	150 × 150 × 75 or 150 × 150 × 150
Heat Capacity (kJ/m³·°K)	674	728	728	760
Weight (kg/m³)	660	710	710	740
Void Fraction (%)	72	70	70	68
Maximum Working Temp	1110°C	1110°C	1110°C	1110°C

Material Properties

Property	Value
Specific Gravity	2.2–2.5
Water Absorption (ASTM C373)	≤ 3.0%