Method for the production of fertilizer and CO2
US8608821B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2006 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | May 15, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC05B7/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a method for the combined production of (i) a fertilizer selected from the group consisting of ammonium nitrate, ammonium phosphates or a combination thereof, (ii) a concentrated stream of CO2 through an indirect neutralization of ammonia with an acid selected from the group consisting of nitric acid, phosphoric acid, a salt thereof and a combination thereof; said method comprising: (I) reacting a carbonate product with a reagent selected from the group consisting of nitric acid, phosphoric acid, a salt thereof, and a mixture thereof to form CO2, and a fertilizer containing an ammonia component; and (II) separating at least a portion of said carbon dioxide from said fertilizer in a condensed and relatively concentrated stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.