PETROCHEMICALS

The stakes are high

PBI dedicates its expertise to the service of environmental problems, process optimisation and energy efficiency with universal and sustainable solutions. The stakes are indeed higher than ever in the downstream processing (DSP) units. As well as solving accidents or emergency situations, let's take on your optimisation projects together! In order to withstand the mainly thermal and chemical constraints which prevail among petrochemical furnaces, we use very high-quality materials. Our NEFATEX 1390 fabric, combined with a proven design and closing systems, is practical, simple and very resistant to attack and has long been acclaimed by engineering offices and petrochemical groups.

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To limit containment losses

PROTECTION

In addition to the fact that the various sensitive points of the protected tubes (elbows, part facing the burners, supports, etc.) will see their lifespan greatly increased with a significant economic impact, this will limit the formation of coke and, in the most extreme cases, which fortunately are very rare, will prevent cracks endangering the installation.

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TecHeat® Elbow Protection

  • 10% daily production improvement (*)
  • Limits external corrosion and internal coking
  • Reduces the risk of bursting pipes and welds

(*in distillation furnace in France, 232 tubes, protection <1% of linear footage, 850°C, Furnace 30,000 T, gas energy)

The “Bow-Tie model LOPA” calculates that an excess of coke (>60% of the thickness of the tube) inevitably generates a runaway… flux loss of +/- 0.390 kW/m2 => loss of power transferred of +/- 22.65 kW/h => obligation to compensate by increasing combustion => increase in energy consumption expenditure + increase in the skin temperature of the tubes + attack from polythionic acids + corrosion of the tubes => loss of containment + leakage of welds => Explosion or Fire. TecHeat® protections are specially developed to preserve the integrity of tubes, elbows, connections, thermocouple junctions, reducers….

  • Limits external corrosion and internal coking thanks to its design and composition
  • Resistant to 1390°C, chemical attack, abrasion and direct flame from burners
  • Simplified installation on the most inaccessible or sensitive parts compared to existing solutions, without any modification to your structure
  • Can be removed for checks, resistant to maintenance washings
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TecHeat®  Support Protection

  • Installation 16 units in 1 day (*)
  • Limits distortion and preserves support integrity
  • No external provider

(*in hydrodesulfurisation furnace in Spain, 16 supports, 650°C, refining fuel-gas energy)

If the flame reaches the anchors/supports of the tubes (not benefiting from any "cold source") there is a risk of deformation and of the welds weakening, irreparably causing the distortion or the fall of the tubes as well as a loss of functionality, resulting in a risk of loss of containment and by extension… an Explosion or a Fire. TecHeat® Support Protections are specially developed to preserve the integrity of pipe supports and anchors.

  • 1390°C heat shield with high chemical inertia (H2S, SO2, etc.)
  • Limits abrasion and external corrosion
  • Simplified installation, lacing assembly
  • No structural modification required or needed for intervention from external providers
  • Can be removed for checks, resistant to maintenance washings

Other PROTECTIONS

  • TecHeat® tube protection

  • Heat shield
  • TecHeat® Thermocouple Protection

To reduce unwanted air intakes

SEALING

Better control of combustion, reducing energy consumption… also requires excellent sealing of the tube passages. Among all the factors which contribute to increasing the yield and efficiency of an energy process in depression, the fight against “unwanted air intakes” is a priority. For many years, we have been able to respond to countless problems concerning different types of furnaces in the petrochemical industry, taking all the specific parameters of each one into account. Aware of both issues and constraints, our technical team carries out a detailed and specific study for each project on site (design, materials, expansions, fixings, installation, planning, etc.).

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TecHeat® Expansion Collar

  • 1% increase in furnace efficiency (*)
  • Reduction of atmospheric emissions of Co and Nox
  • Installation in less than 15 minutes by collar without furnace shutdown or an external service provider

(*on crude oil heater in France, 14 crossovers, 300°C, gas energy)

Imperfect combustion implies the presence of unburned fuel in the chamber generating an explosive atmosphere. The O2 rate has a direct impact on the quality of combustion. An explosion (even a small one) inside the chamber will irreparably impact (with a greater or lesser risk) the lyres/tubes (not only in the chamber in question); this explosion (sometimes undetectable and not detected) can cause the extinction of the flames with the chain reactions which are related to it which can lead to an explosion or Fire. The empirical fuel efficiency gain is estimated at 1% for 2% O2 gain in the flue gases The TecHeat® Expansion Collar is a range of static seals specially developed to preserve the integrity of the tube passages at 1000°C and avoid parasitic air inlets which disturb the operation of the installations. Intended for unlimited axial & radial expansion movements, it optimises the combustion process (reduction of fuel consumption), reduces Co and Nox emissions and reduces operating and maintenance costs. Made to measure, it is integrated into the inlet and outlet of tubes, on the radiation and convection part.

  • 1 point fixing: casing of the furnace
  • Sliding sealing
  • Simplified installation, assembly of 2 ½ collars around the tube, mechanically fixed to the ferrules
  • No structural modification required or needed for intervention from external providers
  • Removable for checks, resistant to maintenance washings
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TecHeat® Expansion Bellows

  • Fuel gas combustion gain of 5 T/day (*)
  • Reduction of the O rate to 2%

(*on atmospheric distillation furnace in France, 40 convection & radiation crossovers, 450°C, 30,000 T furnace, gas energy)

Over the past 50 years, 70% of explosions in furnaces and +/- 90% of deaths recorded following incidents on refineries are attributed to incidents linked to the ignition of burners in the furnaces (presence of unburned fuel in the chamber or involuntary extinction of the flame). The lack in tightness of a 6" tube passage of a furnace with a depression of 10 Pa could generate an entry of parasitic air at 20°C of about 80 m3/h. The TecHeat® Expansion Bellows is a range of dynamic seals specially developed to preserve the integrity of the tube passages at 900°C and to prevent parasitic air inlets which disturb the operation of the installations. Intended for axial & radial expansion movements of +/- 300 mm, it optimises the combustion process (reduction of fuel consumption), reduces Co and Nox emissions and reduces operating and maintenance costs. Made to measure, it is integrated into the inlet and outlet of tubes, on the radiation and convection part.

  • 2-point fixing: passage of the furnace & tube
  • Bellows-type sealing
  • Simplified installation, assembly by High-Temperature zipper
  • No structural modification required or needed for intervention from external providers
  • Removable for checks, resistant to maintenance washings

Other SEALING

  • Sealing of FCC reactor
  • Sealing of passages
  • Sealing of explosion hatches
  • ...

Other solutions for

PETROCHEMICALS

Obviously if these 4 "applications" are fundamental, we must not forget all the other possible air inlets on which it is essential to intervene because they are all sources of heat loss and unwanted air penetration if poorly sealed. Below you will find the brochure summarising these activities, as well as a non-exhaustive list of applications on which we regularly work with petrochemical sites around the world.

  • Sealing of doors and manholes
  • Welding screen
  • TecHeat® expansion sheath

  • Butterfly valve sealing
  • Thermal insulation of the power plant
  • TecHeat® tube protection

  • Heat shield
  • TecHeat® Thermocouple Protection

  • Protection curtains
  • Hot-spot insulation

  • ...
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Our partners

PETROCHEMICALS

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Applications

TEXTILE EXPANSION COMPENSATORS

TEXTILE EXPANSION COMPENSATORS 100°C TO 1300°C

BACK-UP INSULATIONS

BACK-UP LADLE/CRUCIBLE/ FURNACE INSULATIONS

INSULATION AND PROTECTION LAGGING

INSULATION AND PROTECTION LAGGING 100°C TO 1390°C

PROTECTION OF CRITICAL CABLES

PROTECTION OF CRITICAL CABLES UP TO 1390°C