Plants need fertilisers and soil conditioners to help them grow and increase yield as well as agents, such as pesticides and herbicides, to protect them from pests, diseases and weeds. Modern chemical fertilisers include the key nutrients nitrogen, phosphorus, potassium, sulphur, magnesium and calcium. Most nitrogen fertilisers are made from ammonia – a compound of nitrogen and hydrogen (NH₃) – synthesized by the Haber-Bosch process.

Producing synthetic nitrogen fertiliser is extremely energy intensive. Kelvion heat exchange technology supports optimum heat transfer duties while recapturing waste heat. Our Rekuluvo air preheaters are operating in many fertiliser plants globally, transferring waste heat from flue gas to preheated air. Also the Kelvion range of shell and tube and fully welded plate heat exchangers can recover energy from low temperature vacuum vapours for further thermal use.