Process for producing ammonia synthesis gas and a method for revamping a front-end of an ammonia plant
US10954124B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2014 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Oct 13, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49716
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing ammonia make-up synthesis gas and a procedure for revamping a front-end of an ammonia plant for producing ammonia make-up synthesis gas are disclosed, wherein the make-up synthesis gas is produced by means of steam reforming of a hydrocarbon gaseous feedstock; said front-end includes a primary reformer, a secondary reformer, a shift conversion section, a CO2 removal section and optionally a methanation section; a shell-and-tube gas-heated reformer is installed after said secondary reformer, and a portion of the available feedstock is reformed in the tubes of said gas-heated reformer, and heat is provided to the shell side of said gas-heated reformer by at least a portion of product gas leaving the secondary reformer, possibly mixed with product gas leaving the tubes of said gas-heated reformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.