Patent · US Active

Method of revamping of an ammonia plant fed with natural gas

US9403146B2 · kind B2 · utility

0Cited by

1References

9Claims

0Family size

Assignee

Casale SA · CH

Inventors

Ermanno Filippi · Castagnola, CH
Raffaele Ostuni · Lugano, CH

Key dates

Filing date	Feb 8, 2013
Grant date	Aug 2, 2016
Priority date	—
Expiry date	Feb 8, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49716
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method of revamping of an ammonia plant fed with natural gas comprising a primary reformer (11) and a secondary reformer (12), the method comprising at least the following interventions: reducing the outlet temperature of the gas (17) flowing out from said primary reformer; adding a feeding line of substantially pure oxygen (30) directed to said secondary reformer (12) to at least partially replace the comburent process air; adding a nitrogen injection line (31) in an amount necessary to obtain a make-up gas suitable for ammonia synthesis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.