Transfer Line Exchanger

SCHMIDT’SCHE® Transfer Line Exchange (TLE) are used in the thermal cracking process of various gaseous and liquid feedstocks. We are proud to be the only current company with a product portfolio for all commercial ethylene processes.

 

The Transfer Line Exchanger is at the heart of the cracking process. By positively influencing the ethylene yields and maximizing the energy recovery, it contributes  significantly to the profitability of every ethylene plant.

Since the nineteen sixties, we have learnt about this process day by day. Accumulating knowledge has led to a deep understanding.

 

As a result, depending on the feedstock, our SCHMIDT’SCHE® TLE provides a high selectivity and a low share of undesired by-products. It is our corporate pride for not only being the originator but still a leading participant in this sensitive industry.

Transfer Line Exchanger for Steam Cracking Processes

Technology platform

Challenging and sophisticated requirements demand individual, tried and tested solutions. We apply our unique SCHMIDT’SCHE® Double Tube & Oval Header technology platform for cooling of the cracked gas in ethylene processes.
This technology platform has been used in the ethylene industry for decades as it provides outstanding advantages:

 

  • Automatic adjustment of the required cooling for each individual tube compensates for uneven gas flow distributions.
  • High gas flow velocities ensure removal and transportation of particles and protect against high heat flux areas.
  • Mitigation of mechanical stress protects the magnetite layer of the cooler tubes and therefore, ensures the longest possible TLE lifetime.
  • Aerodynamically optimized funnel shaped tube inlets provide the highest possible protection against tube inlet erosion and formation of gas side deposits.

Round-Type TLE

Your Benefits

 

High value and yields of cracked gas:

  • Low pressure drop.
  • Short residence time in tubes.

 

Simple integration:

  • Short tubes.
  • Compact exchanger.
  • Ethylene stabilization temperature reached in one pass.
  • Minimized furnace structure requirements.

Bathtub-Type TLE

Your Benefits

High value and yields of cracked gas:

  • Low pressure drop.
  • Short residence time in the tubes.
  • Ethylene stabilization temperature reached in one pass.


Simple integration:

  • Short tubes and compact exchanger.
  • Minimized furnace structure requirements.

Quick Quencher-Type TLE

Your Benefits


High value and yields of cracked gas:

  • Low pressure drop.
  • Short residence time through the tubes.
  • Low adiabatic volume and thereby low residence time in the adiabatic zone.


Simple maintenance and high durability:

  • Less erosion potential in gas inlet chamber.
  • Minimized or eliminated requirement for mechanical cleaning.
  • Less combining of furnace coils necessary.
  • Smooth temperature gradient from coil to TLE.


Simple integration:

  • Compact design.
  • Minimized furnace structure requirements.
  • No tube sheets.

Linear-Type TLE

Your Benefits


High value and yields of cracked gas:

  • Low adiabatic volume.
  • Short residence time in the adiabatic zone and the tubes.


Simple integration:

  • No tube sheets.


Simple maintenance and high durability:

  • No erosion issues in transfer from radiant coil.
  • Minimized or eliminated requirement for mechanical cleaning.
  • No combining of furnace coils neccessary.
  • Smooth temperature gradient from coil to TLE.

Secondary & Tertiary TLE

SCHMIDT’SCHE® Secondary and Tertiary Transfer Line Exchanger, Steam Drum and interconnecting pipework complete your quench system. Many different arrangements of the equipment can be implemented according to our client’s request. On site installation and construction works are therefore minimized. Saving time for planning, installation and erection. Enabling highest safety and reliability.
 

Your Benefits:

  • Flexible tube sheets prevent excessive tube stress and contribute to operational reliability and safety.
  • No crevice corrosion: full penetration, crevice-free attachment of tubes to the sheets.
  • Feedstock individual based gas inlet and outlet chamber design with lifting lug.
  • Special support plates to prevent tube vibrations.

Steam Drum & Piping

The SCHMIDT’SCHE® Steam Drum in a quench system provides:

  • Natural circulation: no circulation pumps are required. Achieving improved reliability.
  • Spare water volume: enables additional operation of the TLEs for a limited time period to implement countermeasures in case of boiler feed water cut-off.
  • High steam quality due to SCHMIDT’SCHE® design of steam separation internal components and nozzles.

 

Piping:

There is no requirement for expansion joints or flanges for the downcomers and risers. The piping design ensures adequate flexibility for thermals stresses under all operating conditions. SCHMIDT’SCHE® piping engineering ensures thermal performance and mechanical integrity of the TLE / steam system.

Unique solutions. Maximum reliability

SCHMIDTSCHE® Transfer Line Exchanger

You are interested in SCHMIDTSCHE® Transfer Line Exchanger for ethylene plants and want to get further information?

Get our Transfer Line Exchanger e-paper.

Download

Get in Touch

Sales Contact

You want to learn more?

Please get in touch with our leading expert on Transfer Line Exchangers.

 

Thorsten Schlieter 

Phone: +49-561-9527-114 

E-Mail: thorsten.schlieter@arvos-group.com