Solutions for

Steam Cracker

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Petrochemical Industry

Our products – tailor-made for your specific requirements

Solutions for Steam Crackers

Radiant coils operated at high temperatures (i.e. up to 1150°C) in steam cracker furnaces are exposed to severe atmospheres. Therefore, S+C helps operators to select the proper alloy, by determining ways to control furnace operation to minimise carburisation, creep damage, coking, distortion, etc.

It´s well proven in the industry that cast materials – either centrifugally, vertically or statically cast – meet those requirements perfectly and deliver the required properties. S+C offers exactly this with its full range of products and alloys for steam cracker components.

Beside this, it is S+C´s first and foremost aim to constantly develop further in order to be state of the art when it comes to new technologies and alloys to meet the ever-increasing demands of sustainability.

Miscellaneous statically cast fittings, i.e. Elbows, return bends wy-pieces etc.
Complex tetra fittings at a radiant coil outlet in Centralloy® H 101 material

S+C is specialized in the manufacture and supply of all types of centri-cast tubing and statically cast fittings (such as elbows, return bends, tetrafittings, wye-pieces etc.) for all available designs and in all typical alloys.

A wide range of different sizes and alloys of internally profiled (SCOPE) centri spun tubes are available
S+C manufactures and supplies radiant coils for all available furnace designs of steam cracker furnaces
Centrifugally cast tubes either straight and/or shaped

S+C is specialized in the manufacture and supply of all types of centri-cast tubing and statically cast fittings (such as elbows, return bends, tetrafittings, wye-pieces etc.) for all available designs and in all typical alloys.

Hardware Optimization

Optimized coil configuration

Innovative materials that generate added value

A detailed understanding of the many factors involved in the steam cracking environment, coupled with sound appreciation in plant performance, is needed to select the optimum material for a particular part within the radiant coil.

As a high quality alloy manufacturer of cast materials and inner profile technologies, we are very confident in their proven benefits. Hence let us help you to fit those cutting edge products into your particular radiant coil design in order to generate the most advantageous configuration. 

Range of Alloys – Steam Cracker

Heat-resistant centrifugally cast steels

S+C cast heat-resistant, high grade materials – so that you stay ahead. The tiles below provides a general overview of materials commonly used within the petrochemical industry and regularly manufactured by S+C.

Centralloy® G 4852

ASTM: HP-Nb

DIN EN 10295

GX40NiCrSiNb35-25

Apllication: Radiant Coil

Centralloy® G 4852 Micro

ASTM: HP-Nb Mod

DIN EN 10295 (mod)

GX40NiCrSiNbTi35-25

Apllication: Radiant Coil

Centralloy® G 4868

ASTM:

Not assigned

GX50CrNi30-30

Apllication: Radiant Coil

Centralloy® ET 45 Micro

ASTM:

Not assigned / PMA available

GX45NiCrSiNb45-35

Apllication: Radiant Coil

Centralloy® HT E

ASTM:

Not assigned / PMA available

Special proprietary alloy

Apllication: Radiant Coil

Centralloy® G 4859

ASTM: CT-15C

DIN EN 10295 / Vd TÜV W.Bl. 471

GX10NiCrNb32-20

Apllication: Transfer Line

Centralloy® H 101

ASTM: HP low C

DIN EN 10295 (mod)

GX13NiCrNb37-25

Apllication: Transfer Line

Centralloy® HT E

The power of innovation

Developed by Schmidt + Clemens, the special alloy Centralloy® HT E is the ideal material for your steam cracker.

With Centralloy® HT E, Schmidt + Clemens sets new standards in materials technology for steam crackers. Our groundbreaking, self-regenerating aluminum-forming alloy offers numerous advantages, such as: reduced coke formation, increased resistance to carburization and oxidation, and improved creep rupture strength. Maximum performance through flexible operation.

Our high-performance alloy enables more efficient and sustainable production.

Flexible operation for optimum efficiency
  • Increased run length
  • Higher feed rate/conversion
  • Increased selectivity
  • Fuel/energy savings
  • Lower CO2 emissions
  • Longer coil life

Why select
Centralloy® HT E for your Application?

Solutions for the Petrochemical Industry – Higher Performance, Less Downtime

Advanced Tube Design

SCOPE®

The unique profiling of your tubes will lead to an even higher benefit for your operation

Today, centrifugally cast tubes are the preferred choice in the majority of radiant coils in service. Spun cast tubes in the high alloy material grades provide appropriate levels of high temperature strength and corrosion resistance. However, some small bore wrought extruded pipes, some with internal fins, used in high selectivity furnaces.

The effect of increasing the internal surface area of radiant tubes, in order to improve heat transfer efficiency, is well known. Internally finned centrifugally cast SCOPE® tubes in comparison to bare tubes reflect a number of benefits.  

The advantages of our cutting-edge inner profile technology speak for themselves
  • Enhanced heat transfer
  • Reduced tube metal temperature
  • Improved heat distribution
  • Fully customizable
  • Same weldability
  • Increased resistance to carburization and oxidation

S+C can manufacture internally profiled centri spun tubes in a wide range of different sizes and alloys, including the sophisticated Centrally® HT E material.

Flexible operation for optimum efficiency
  • Increased run length
  • Higher feed rate/conversion
  • Increased selectivity
  • Fuel/energy savings
  • Lower CO2 emissions
  • Longer Coil life

Why select
SCOPE® Fusion HT E for your Application?

Flexible operation for optimum efficiency

Unmatched Performance

SCOPE® Fusion HT E

Intelligent profile meets superior material

The use of an intelligent profile in steam cracker tubes can considerably raise the selectivity of a plant. Use of the right alloy as tube material can greatly inhibit coking and carburization processes.

But what happens when innovative tube design meets a perfect material? SCOPE® Fusion HT E is earning top marks for performance and endurance and has distinguished itself as by far the best of today‘s steam cracker tube systems.

The use of Centralloy® HT E – which has a proven track record as the most effective alloy to inhibit coking and carburization – extends required decoking intervals by multiple times, thereby minimizing downtime while also protecting the plant. The innovative 3D design, which can be adapted to meet customer-specific requirements, increases selectivity and ethylene yield while saving energy at the same time.

SCOPE® Fusion HT E helps you get the most out of your steam cracker!

Your Benefits:
  • Rotating feed flow
  • Optimized heat transfer
  • Uniform temperature distribution across the tube shell
  • Lower material temperature
  • Less coking
  • Less carburization

Our contribution to sustainability

IMPROOF Project

By merging our two superior technologies, into SCOPE® Fusion HT E, results in a distinct advantage regarding energy efficiency and ability to last.

Whereby, within the framework of the EU funded IMPROOF project the qualities of SCOPE® Fusion HT E were subjected to extensive testing. S+C, as a technology supplier, was part of a large consortium incorporating universities, engineering companies and operators. A full furnace at an end user’s steam cracker was equipped with SCOPE® Fusion HT E Coils.

Compared to standard materials, S+C’s technologies significantly reduced the greenhouse gas effects, while at the same time raising the efficiency of the cracker.

Your Advantage

S+C Services

Services and Solutions for steam cracker. With S+C you have the perfect partner at your side.

Our services are as diverse as your requirements: Whether On-Site services, Laboratory services, Damage analyzes or System optimization – we are pleased to offer our customers the best service and expertise.

Integrated Optimization
Services for
Steam Cracker
Plant Support - Next Level
On-Site Services
In-House Certified
Laboratory
Services