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Porous Coated Tube Heat Exchanger

Product Overview

Porous coated tubes are high-efficiency heat transfer tubes manufactured using powder metallurgy techniques, with a sintered porous surface layer of specific structure applied to ordinary heat transfer tubes. The cavities and pores in the porous layer are interconnected, significantly enhancing boiling heat transfer.
Outer Tube Coating, Inner Tube Coating

Materials:C.S., LTCS, S.S., Al, Cu-Ni Alloy, Nickel-based Alloy, Duplex Steel

Porous Coated Tube Heat Exchanger

Advantages

Porous Coated Tube Heat Exchanger

High Heat Transfer Coefficient

  • 3-8 times that of smooth tubes

High Critical Heat Flux

  • 1.2 times that of smooth tubes

Lower Boiling Temperature Difference

  • Only 1/4 to 1/7 that of smooth tubes

Fouling Resistant

  • Intense boiling reduces fouling

Benefits

1
High Heat Transfer Efficiency
2
Energy Saving
3
Cost Reduction
4
Enhanced Reliability
5
Extended Service Life
6
Wide Application Range

Case Study Examples

Reboiler for Aromatics Processing Unit Bottom Withdrawal Tower

Item Before After
Equipment Size DN1300×4.877 DN1400×4.877
Heat Transfer Area (m²) 360 420
Heat Load 34.3 39
Average Effective Temperature Difference (°C) 26.6 20.6
Heat Transfer Coefficient (W/m²·°C) 1796 2253.8

Materials & Processing Types

Enhancement Type Location Material
Outer Tube Coating Bare Inner Tube C.S., LTCS, S.S., Cu-Ni Alloy, Inconel 690
Inner Finned Tube C.S., LTCS
Corrugated Tube C.S., LTCS, S.S., Cu-Ni Alloy
Inner Tube Coating Outer Grooved Tube C.S., LTCS, S.S., Cu-Ni Alloy
Code: GB: 10#, 09MnD, 09MnNiD, S30408/S30403, S31603, BFe10-1-1
ASME: SA-179, SA-334, SA-213, SB-466(C70600), Inconel 690

Processing Specifications

Processing Type Diameter (mm) Length (mm)
Outer Tube Coating 16-32 ≤25000
Inner Tube Coating 25-32 ≤7000

Products & Applications

1.3 Million Tons/Year Ethylene Plant

1300 KMTA Ethylene Unit – Porous Coated Tube Heat Exchanger

1.0 Million Tons/Year Ethylene Oxide/Ethylene Glycol

1000 KMTA EO/EG Unit – Porous Coated Tube Heat Exchanger