Ammonia is produced through the synthesis of nitrogen and hydrogen. Hydrogen is produced from low-sulphur, high-calorific natural gas with a low calorific value of approximately 37.4 GJ/nm3, using a steam reforming process. Nitrogen is sourced from atmospheric air.
OCI Nitrogen has two world-scale production plants at Geleen with effective capacities of 560kt and 570kt per year, respectively. State-of-the-art Bechtel and Kellogg technologies allow us to produce ammonia in an energy-efficient manner.
The controls for the two plants are fully integrated and monitored from a single control room using the latest technology control system, providing high production reliability. Both plants are certified to ISO 9001 standard.
The ammonia produced in Geleen is stored in two atmospheric cooled (-33°C) ammonia storage tanks, each containing 25,000m3 each, and a pressure storage sphere of 2,200m3. At the Geleen site, ammonia is supplied through a liquid ammonia distribution grid to which the ammonia storage tanks are connected. The grid is protected by several methods, for example acoustic alarms to detect and limit the effects of potential leaks. Supply to external customers is through leased rail cars that directly connect the Geleen site to customer’s production sites. The Geleen site has fully integrated rail loading facilities and a daily loading capacity of 24 rail tank cars.
Sale of argon to industrial gas companies is through multi-year take-or-pay contracts. OCI Nitrogen stores argon at its Geleen site in a storage tank at -186oC.