Process for the production of urea in a conventional urea plant

摘要

The invention is directed to a process for the production of urea in a conventional urea plant comprising a high-pressure part, which comprises a urea reactor wherein the urea reactor comprises an austenitic-ferritic duplex steel with a chromium content of between 25 and 35 wt.% and a nickel content of between 3 and 10 wt. %.