thyssenkrupp Uhde, in close cooperation with Johnson Matthey, has completed the modernisation of the ammonia converter for IGSAS – Istanbul Gübre Sanayii A.S. – at its Kocaeli production site in Türkiye.
A performance test confirmed a significant production increase of 13%, fully restoring the original nameplate capacity of 1200 tpd of ammonia, while operating at a 7% lower synthesis loop pressure. This results in a meaningful reduction in overall specific energy consumption. In addition, the revamped converter now operates with a 70% lower pressure drop, further improving efficiency and long-term reliability of the whole plant.
Thanks to careful planning and close collaboration with IGSAS, the installation proceeded smoothly under the supervision of thyssenkrupp Uhde specialists. Catalyst loading was executed rapidly using uhde® dense-loading technology together with the IGSAS team, followed by a coordinated catalyst reduction and commissioning sequence together with Johnson Matthey. These steps ensured a swift and reliable return to full operation. The upgrade replaces a converter cartridge that had been in operation for an exceptional 36 years – well beyond the industry norm. This longevity reflects the robust engineering and manufacturing quality of thyssenkrupp Uhde’s ammonia converter technology and IGSAS’s continued excellence in operation and maintenance.
Nadja Håkansson, Member of the Executive Board/COO of thyssenkrupp Decarbon Technologies and CEO of thyssenkrupp Uhde, said: “The successful completion of this project demonstrates the strength of our collaboration with IGSAS and Johnson Matthey, and the outstanding capabilities of our uhde ammonia technology. With this upgrade, IGSAS benefits from significantly improved energy efficiency and reliability, while gaining future flexibility for capacity increase or green ammonia production. We are proud to support our customers in advancing sustainable and high-performing fertilizer production.”
Ilkay Ünal, General Manager at IGSAS, added: “With the successful completion of this modernisation, IGSAS has achieved an important milestone in strengthening the reliability, efficiency and long-term sustainability of its production facilities. This project also reflects the strong technical collaboration between IGSAS and Uhde teams throughout the execution phase.”
Combined technologies enable high performance with low emissions
The combination of the new uhde converter cartridge with Johnson Matthey’s high-performance KATALCO™ 74-1 catalyst forms a strong technological platform for the future, ensuring both operational stability and the potential for further optimisation. thyssenkrupp Uhde’s scope included full supervision of all field activities – from converter opening and catalyst unloading to assembly, catalyst filling and activation, start-up, and performance testing. Beyond the completed IGSAS project, thyssenkrupp Uhde is already executing further revamps with the same approach.