Linde provides ammonia production plants using two different approaches:
- High pressure gasification of refinery residue, heavy oils and coal with oxygen
- The Linde Ammonia Concept (LACTM) for natural gas or light hydrocarbon feed stocks
The Linde Ammonia Concept (LACTM)
The Linde Ammonia Concept is based on a combination of proven process steps. The plant primarily comprises a modern hydrogen plant, a standard nitrogen plant and high-efficiency ammonia synthesis.
In the hydrogen plant, the synthesis gas (syngas) is produced through steam reforming, then purified by pressure swing adsorption. High purity nitrogen is delivered from the nitrogen plant and mixed with the syngas upstream of a syngas compressor. With fewer process steps, LACTM is simpler than traditional ammonia generation processes, leading to investment and operational cost savings. Additional cost benefits can be recognized through the sale of valuable by-products from the nitrogen and hydrogen plant such as oxygen, argon and carbon dioxide. LAC plants have been constructed with capacities of between 230 to 1,350 mtd of NH3.