The Answer to Your Challenges.

Boosting Your Plant.

Max. Thermal PGB Power
0  MW
Exceptional Gas Flow Rates
100000  kg/h
Implemented in Methanol Plants with a capacity of
0  Mio TPY
For decades, SCHMIDT’SCHE® Process Gas Boilers (PGB) have been the cornerstone of efficient steam reforming in hydrogen, methanol and ammonia applications. Ensuring optimal cooling, maximum heat transfer, and enhanced system reliability.
 
Utilizing advanced flexible tube sheet technology, our PGBs prevent excessive stress and deformation in the tube-to-tube sheet connection, improving both performance and service life. Designed to handle high-pressure, high-temperature conditions, our boilers provide consistent cooling and reliable operation, even under extreme thermal stresses.
 
Each SCHMIDT’SCHE® PGB is a custom-engineered solution, optimized to meet the demanding requirements of steam reforming processes. While each unit is tailored to fit specific needs, the core of the SCHMIDT’SCHE® PGB is built on exceptional efficiency, durability, and unmatched performance.

SCHMIDT’SCHE® Process Gas Boiler (PGB)

High Performance, Maximum Lifetime and Reliability.

At the core of our SCHMIDT’SCHE® Process Gas Boiler (PGB) design is a combination of advanced features that ensure reliable operation and optimized efficiency. The flexible tube sheet design prevents excessive stress and thermal expansion, providing superior protection for critical components and extending the lifespan of the boiler.
 
To prevent corrosion and metal dusting, we use crevice-free welding and specialized ferrules for enhanced protection of the tube inlet areas. This approach improves both heat transfer and long-term durability, even under the harshest conditions.
 
The Cold Bypass Design ensures effective temperature control, preventing metal dusting by maintaining temperatures outside the critical corrosion range. This innovative design ensures optimal gas flow, maximizing efficiency and minimizing wear.
 
With over 30 years of expertise, SCHMIDTSCHE SCHACK continues to lead in Process Gas Boiler (PGB) technology, delivering high performance, reduced maintenance, and increased operational stability.

Innovative Heat Transfer

For Maximum Efficiency and Longevity.

SCHMIDT'SCHE® Process Gas Boiler
The SCHMIDT’SCHE® Process Gas Boiler (PGB) is a high-performance solution designed for efficient heat recovery and reliable operation in steam reforming applications. Featuring a flexible tube sheet design and advanced cooling technologies, it maximizes heat transfer while ensuring optimal protection for critical components. Typically, one or more PGBs are installed per furnace, integrated into the overall steam reforming process for optimal efficiency.
 
The PGB is designed to withstand high gas temperatures and pressures, with crevice-free welding ensuring durability and protection against corrosion. The system features advanced bypass designs for effective gas outlet temperature control, preventing metal dusting and ensuring stable operation.
 
Your Benefits
  • High heat recovery
    Achieved through efficient heat transfer and low pressure drop.
  • Reliable operation
    Designed to withstand extreme temperatures and high pressures.
  • Corrosion prevention
    Crevice-free welding and specialized ferrules ensure long-term durability.
  • Optimal gas flow control
    Advanced bypass designs prevent metal dusting and improve system efficiency.
  • The SCHMIDT’SCHE® Process Gas Boiler (PGB) delivers exceptional heat recovery and long-term reliability with minimal maintenance, ensuring the best performance in steam reforming systems.
The SCHMIDT’SCHE® Vertical Process Gas Boiler (PGB) is a high-performance solution developed in collaboration with CASALE, a leader in ammonia, methanol, and syngas production technologies. Specifically designed to address reliability issues in conventional waste heat boilers, this innovative boiler is based on our proven Double Tube & Oval Header Technology.
 
The Vertical PGB features coaxial double tubes welded to horizontal oval headers, allowing for flexible accommodation of thermal expansion and contraction. This robust design prevents common issues such as tube sheet stress, sludge deposition, erosion, and vibration-induced overheating. By using crevice-free welding for the inner and outer tubes, the design ensures corrosion resistance, particularly preventing crevice corrosion in the welded joints.
 
Your Benefits
  • Enhanced reliability
    Robust design using double tube registers and crevice-free welding eliminates common reliability issues.
  • Efficient heat recovery
    High heat transfer efficiency due to the innovative Double Tube & Oval Header Technology.
  • Corrosion protection
    Crevice-free welds and water cooling prevent corrosion at the welded positions.
  • Easy integration
    Can replace existing waste heat boilers with minimal modifications to the existing plant.
  • The SCHMIDT’SCHE® Vertical Process Gas Boiler (PGB) delivers superior heat recovery and long-term operational stability, making it the ideal solution for ammonia plants seeking to optimize efficiency and reliability.
SCHMIDT’SCHE® Steam Superheaters are our heat transfer solution for maximizing the efficiency of industrial plants.
 
Saturated steam exiting the steam drum may need to be superheated depending on the individual process characteristics. In order to achieve this, a superheater is installed e.g. downstream of a process gas boiler or a syngas cooler.
 
Your Benefits
  • High durability and pressure resistance
    Spiral wound heating surfaces handle high steam/gas pressures and dust loads.
  • Thermal stress resilience
    Flexible tube bundles minimize thermal stress across all temperatures.
  • High-temperature capability
    High-alloy steel allows operation up to 850 °C (gas) and 560 °C (steam).
  • Efficient dust handling
    Downflow design and special gas inlets support high-dust operations, with optional cleaning systems.
  • Easy maintenance
    The entire tube bundle is removable for fast and safe servicing.
  • SCHMIDTSCHE SCHACK applies dedicated designs for steam superheaters to achieve optimized overall plant economics.
  • Proven U-tube design
    Effective thermal expansion management.
  • Inconel-clad tube sheet on the gas side
    Corrosion and heat resistance.
  • Inlet tubes protected by Inconel ferrules
    Protection from direct gas impact.
  • Optimized flow path
    Hot gas routed through internal metal duct to the tube sheet.
  • Controlled Temperature
    Ferritic parts can be retained safely under the critical nitriding temperature.

SCHMIDT’SCHE® Synloop Boiler are exposed to very high operating pressures, resulting in huge mass flow densities
and thermal heat fluxes.

The synthesis gas, consisting essentially of hydrogen, nitrogen and ammonia, is under pressures of 200 to 250 bar (2,901 to 3,626 PSI). In the waste heat boiler, the synthesis gas is cooled down from approx. 450 °C (842 °F) to approx. 340 °C (644 °F) whereby high pressure saturated steam of about 120 to 140 bar (1,740 to 2,013 PSI) is produced.

SCHMIDTSCHE SCHACK’s competence in engineering and highly qualified manufacturing guarantees the required high quality of the synloop boiler.

Your Benefits

SCHMIDT'SCH® Solutions for

Steam Reforming Plants

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Selected References

>  0

No. of Reference Projects

1900

Launch of the First Flexible Tubesheet

1900

Invention of our Cold Bypass Design

SCHMIDT‘SCHE®
PROCESS GAS BOILER

  • SECTOR
  • Petrochemical Industry
  • Process
  • Hydrogen
  • PROJECT CHALLENGES
  • Eliminate metal dusting
  • SCHMIDT‘SCHE® BENEFIT
  • Metal dusting free design

    Crevice-free Tube to Tube Sheet connection
  • INLET GAS TEMPERATURE
  • 870 °C (1,598 °F)
  • GAS PRESSURE
  • 28.5 bar (413 PSI)
  • STEAM CAPACITY
  • 72,9 TPH
  • STEAM PRESSURE
  • 39 bar (566 PSI)
  • TUBE LENGTH BETWEEN TUBE SHEETS
  • 6,700 mm

SCHMIDT‘SCHE®
PGB REVAMP

  • SECTOR
  • Petrochemical Industry
  • Process
  • Ammonia
  • PROJECT CHALLENGES
  • Seamless integration into existing plant
  • SCHMIDT‘SCHE® BENEFIT
  • Custom design for optimal performance

    In-house revamp studies

    Metal dusting free design
  • INLET GAS TEMPERATURE
  • 985 °C (1,805 °F)
  • GAS PRESSURE
  • 27.9 bar (405 PSI)
  • STEAM CAPACITY
  • 91,6 TPH
  • STEAM PRESSURE
  • 83.5 bar (1,211 PSI)
  • TUBE LENGTH BETWEEN TUBE SHEETS
  • 6,300 mm

Get in touch with us!

ARVOS GMBH | SCHMIDTSCHE SCHACK
Headquarters in Kassel
Ellenbacher Strasse 10
34123 Kassel, Germany

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