Ammonia synthesis converters or ammonia synthesis units, in which the synthesis gas (nitrogen and hydrogen) is withdrawn from an ammonia/hydrogen high-pressure exchange column and the synthesized ammonia is returned to said column.
Ammoniaksyntesekonvertere og ammoniaksynteseenheder, i hvilke syntesegassen (nitrogen og hydrogen) trækkes ud af en ammoniak/hydrogen højtryksudvekslingskolonne, og den syntetiserede ammoniak returneres til den nævnte kolonne.