Importance

Loading Importance Indicators...

Abstract

A vertical, cold wall, three bed ammonia converter having upper and lower shell and tube heat exchangers wherein the lower heat exchanger is disposed axially within the upper, annular catalyst bed and preheated synthesis gas from the heat exchangers is initially converted in the middle catalyst bed which is penetrated by first, second, and third coaxial pipes. Partially converted gas from the middle catalyst bed flows upwardly through the annulus formed by the second and third axial pipes through the hot side of the lower exchanger and is then divided for parallel flow through the upper catalyst bed and, by way of the annulus formed by the first and second axial pipes, the lower catalyst bed. Converted gas from the upper and lower catalyst beds is then combined and introduced to the hot side of the upper feed/effluent exchanger.

Loading the Abstract Image...

First Claim