Apparatus and process for the synthesis of ammonia

US9352973B2 · kind B2 · utility

Inventors

• Gert Ungar · Frankfurt am Main, DE
• Jürg Dieter Ungar · Frankfurt am Main, DE

Key dates

• Filing date: Jan 29, 2009
• Grant date: May 31, 2016
• Expiry date: Jan 29, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Described herein is an apparatus for the synthesis of ammonia from a synthesis gas containing N2 and H2, comprising at least one first reactor. The apparatus comprises a first non-cooled catalyst bed unit, at least one heat exchanger apparatus, and at least two cooled catalyst bed units. Each cooled catalyst bed unit is equipped with a plurality of cooling pipes. The apparatus further comprises a circuit line having at least one feed apparatus and at least one outlet apparatus, wherein the circuit line, starting from the feed apparatus, comprises in consecutive downstream arrangement the plurality of cooling pipes, the first non-cooled catalyst bed unit, the at least one heat exchanger apparatus, and the at least two cooled catalyst bed units up to the outlet apparatus. To this end, the circuit line comprises at least one bypass line, which is arranged between the feed apparatus and the first non-cooled catalyst bed unit in parallel to the plurality of cooling pipes running through the at least two cooled catalyst bed units. The invention further provides a method for the synthesis of ammonia from a synthesis gas containing N2 and H2.