Saipem has secured an engineering services contract from Profertil to evaluate a major expansion of the fertiliser producer’s Bahía Blanca complex in Argentina, including a proposed new urea plant with capacity of 4,450 tonnes per day.
The Italian engineering group will execute the work with Techint Engineering & Construction. The 11-month scope includes technical services, preparation of licensor design packages, and development of a structured proposal covering subsequent phases of the project.
The planned expansion brings together Topsoe’s ammonia technology, Saipem’s proprietary urea process, and granulation technology from thyssenkrupp Uhde. The three stages form a connected production chain, so engineering decisions made around one process influence utilities, heat integration, equipment sizing, product quality, and the operation of the others.
Profertil already operates a large fertiliser complex at Bahía Blanca. The existing site includes ammonia production, a 3,250-tonne-per-day urea train, granulation capacity, bulk storage, and road, rail, and marine logistics infrastructure. The proposed new unit would materially increase urea production at an established industrial location rather than create a separate greenfield operation.
That existing infrastructure is an advantage, but integration into an operating process plant brings its own engineering constraints. New process equipment has to connect with utilities, storage, product handling, electrical systems, water, and logistics without compromising the reliability or safety of the existing facility.
Urea production begins with ammonia, which provides the nitrogen used in the process. Ammonia is reacted with carbon dioxide at high pressure before unconverted material and water are separated and recycled. The resulting urea solution is then concentrated and converted into solid product suitable for storage and agricultural distribution.
Each stage operates at industrial scale and places different demands on materials, energy, compression, corrosion control, emissions, and process safety. The proposed plant therefore cannot be treated as a single isolated production unit simply because the final output is urea.
Heat and material integration are particularly important to plant economics. Recovering energy between process stages can reduce steam and fuel requirements, while poor integration increases utility consumption across a plant that already operates continuously and at high throughput.
The 4,450-tonne-per-day target would also represent a substantial increase in individual train scale compared with Profertil’s existing urea unit. Larger process trains can reduce capital and operating cost per tonne where demand and feedstock justify them, but they concentrate more production in each line and place greater importance on equipment reliability.
Natural gas is a central part of the commercial case because conventional ammonia production uses it both as feedstock and energy source. Argentina’s expansion of domestic gas production, particularly from the Vaca Muerta formation, has strengthened the potential for downstream projects that convert locally produced gas into chemicals and fertilisers.
That does not remove exposure to gas pricing, agricultural demand, finance, construction cost, or fertiliser markets. A project of this scale has to remain competitive through commodity cycles rather than only under the conditions prevailing when the engineering study begins.
Bahía Blanca gives Profertil established access to Argentina’s agricultural market and export logistics. Argentina is a major producer of maize, wheat, soybeans, and other crops, creating substantial domestic demand for nitrogen fertiliser alongside potential regional markets.
Saipem also has previous engineering history at the complex. Its predecessor Snamprogetti supplied technology for the original urea plant, which began production in 2001. That background gives the company familiarity with the site and process configuration, although the planned expansion is a new production unit rather than a straightforward uprating of the existing train.
The involvement of specialist licensors reflects the way large chemical plants are typically developed. Individual technologies for ammonia synthesis, urea production, and granulation have been refined through operating experience at multiple sites, while the engineering contractor has to combine them into a complete plant that can actually be built, commissioned, maintained, and operated.
The current contract is therefore an evaluation and engineering step rather than approval to construct the expansion. The work now has to establish a sufficiently detailed technical configuration and commercial basis for Profertil to decide how the project should progress.
Site integration, equipment selection, construction strategy, utility requirements, environmental performance, logistics, and capital cost will all become clearer during the 11-month programme. If the project advances, that work will form the engineering base for a new fertiliser train capable of producing more than 1.6 million tonnes of urea annually at full utilisation.
For Bahía Blanca, the immediate milestone is not additional tonnage but the conversion of an expansion concept into a defined industrial project. Saipem and Techint now have 11 months to determine how a 4,450-tonne-per-day plant can be integrated into one of Argentina’s established fertiliser manufacturing complexes.
