A New Concept for Ammonia Production

The new concept for ammonia production described hereafter consists of utilising for 400 MT/D ammonia synthesis hydrogen produced by steam-reforming of natural gas and purified by an air-pressure-swing-adsorption system and nitrogen produced by an air-separation unit. Although the basic applied techniques are well proven, their combination for ammonia production is made for the first time and will result in a low energy (7.2 Gcal + 22 kwh per ton of ammonia) ammonia production, compared with much larger plants (above 1000 MT/D). Besides the energy-efficiency of the basic concept, several energy-efficiency of the basic concept, several energy-efficiency targeting innovations have contributed to the above mentioned low figures.