SCHACK® Process Gas Coolers (PGC) have long been critical in optimizing heat recovery and ensuring reliable operation in nitric acid production. Engineered to withstand extreme temperatures and corrosive environments, our PGCs provide maximum heat transfer and enhanced system efficiency.
By integrating De-N₂O catalyst technology, our PGCs also play a pivotal role in reducing nitrous oxide (N₂O) emissions, helping plants meet environmental regulations while maintaining high process efficiency. Designed with advanced flexible tube sheet technology and crevice-free welding, our coolers eliminate the risks of mechanical deformation and corrosion, ensuring long-term durability even under harsh operating conditions.
Each SCHACK® Process Gas Cooler (PGC) is a custom-engineered solution, designed to meet the unique needs of nitric acid plants. While each unit is tailored to fit specific requirements, the core of the SCHACK® PGC is built on exceptional efficiency, reliability, and corrosion resistance, with integrated solutions for N₂O reduction and sustainability.
At the heart of our SCHACK® Process Gas Coolers (PGC) is a commitment to providing tailored solutions that meet the specific needs of nitric acid production. Designed to handle high temperatures, extreme pressures, and corrosive environments, our PGCs deliver efficient heat recovery and long-term reliability, ensuring optimal performance under even the most challenging conditions.
In response to tightening environmental regulations, all our SCHACK® PGCs integrate De-N₂O catalyst technology, helping nitric acid producers effectively reduce nitrous oxide (N₂O) emissions while maintaining high process efficiency. Our De-N₂O technology ensures compliance with environmental standards, allowing plants to meet sustainability goals and reduce their environmental footprint without sacrificing performance.
Each SCHACK® Process Gas Cooler (PGC) is a custom-engineered solution, optimized to fit specific plant requirements. Whether using forced circulation, natural circulation, or combined circulation designs, we offer a solution that integrates seamlessly into your process. With decades of expertise in heat transfer technology, SCHMIDTSCHE SCHACK ensures that there is always a perfect solution for your plant’s needs.
The SCHACK® Forced Circulation Process Gas Cooler (PGC), also known as the La Mont Boiler, is designed for challenging nitric acid production environments. This water tube design ensures reliable operation while minimizing corrosion through optimized materials and a precise operating system.
The flat coil heating surface elements enable a compact single vessel design, while the control evaporator technology ensures constant gas outlet temperatures over the full load range. The low gas side pressure drop and low start-up steam requirements enhance efficiency, making this cooler highly reliable and cost-effective.
Additionally, the cooled support structure for the catalyst basket improves durability, while externally accessible headers and easy removal of heating surfaces simplify maintenance and reduce downtime.
Your Benefits
The SCHACK® Natural Circulation Process Gas Cooler (PGC), with its fire tube design, is built to handle high-temperature applications in nitric acid production. This design features parallel fire tube bundles arranged in the lower part of the cooler, acting as an evaporator, while tube coils in the upper section generate superheated steam.
With integrated flexible tube sheets, our Natural Circulation PGC reduces stress on the tubes and welds, leading to enhanced durability and extended service life. The gap-free welding technology effectively prevents crevice corrosion, ensuring reliable performance in even the harshest environments.
This design eliminates the need for circulation pumps, significantly improving system reliability and reducing operational costs. The patented tube sheet cooling system enhances cooling efficiency, while specially designed ferrules ensure the longest possible lifetime of the system.
The SCHACK® Combined Circulation Process Gas Cooler (PGC) truly has the best of two worlds: The combination of fire tube and water tube technology in one device combines the advantages of both designs with additional benefits.
Your Benefits
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Largest PGC diameter
First PGC created in
Superheated steam temperature up to
