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Tube

Inserts

Fixotal®

Principle of operation

FIXOTAL® converts the energy of the fluid flow in the tubes into turbulence thus, preventing the stagnation of products in the layer adjacent to the tube wall.

The purpose of this fixed device is to increase the heat transfer rate and to mitigate fouling.

It also reduces certain types of fouling affected by wall temperature (polymerization, crystallization, solidification of paraffin, scaling, etc.).

The most common fluids used are atmospheric residue, crude oil, and most of the light liquid hydrocarbon chains, including vapors and flue gases.

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Main applications

Crude Distillation Units (CDU) and Atmospheric Residue Service preheat trains

Hydrotreater / Hydrocracker preheat trains

Treated water services

Reboilers

Air coolers

U-Tubes

Installation

No modification of the heat exchangers

No damage to the tubes wall

Quick to install

Supervision by PETROVAL

Added guarantee

benefits

Heat transfer increase

The turbulence generated by the presence of the insert increases the tube side heat transfer coefficient by 50% to 100%.


Energy savings

The improved heat recovery from the hot fluid results in a reduction in fired heater duty and consequently, a reduction in fuel consumption.


Debottlenecking the preheat train

The furnace is the bottleneck when the throughput of the unit is constrained by the feed preheat. Improving the heat recovery of the preheat train increases the throughput up to 3% with the same preheat temperature.


CO2 Emission reduction

CO2 emission is also reduced due to a reduction of fuel consumption.


Reduction in fouling

The mechanical cleaning effect leads to a reduction in the fouling rates of up to 80%.


Stabilized pressure drop

As the fouling rate is stabilized, the steady flow hydraulics leads to a stabilized pressure drop.


Run duration increased

Heat transfer improvement and fouling mitigation lead to doubled run duration and better operating conditions.