Process for the preparation and recovery of carbon dioxide from waste gas or fumes produced by combustible oxidation

• US 20040123737A1
• Filed: 10/10/2003
• Published: 07/01/2004
• Est. Priority Date: 04/11/2001
• Status: Active Grant

• Current Assignee: Casale SA
• Original Assignee: Ammonia Casale, S.A.
• Inventors: Filippi, Ermanno, Zardi, Federico
• Granted Patent: US 7,153,344 B2
• Time in Patent Office: Days
• US Class Current: 95/139
• CPC Class Codes: B01D 53/22 by diffusion manufacturing semi-permeable membranes B01D67/00; form, structure or properties of semi-permeable membranes B01D69/00; material for semi-permeable membranes B01D71/00
• CPC Class Codes: Y02C 20/40 of CO2

Abstract

A process for the separation and recovery of carbon dioxide from waste gases produced by combustible oxidation is described comprising the steps of feeding a flow of waste gas to a gas semipermeable material, separating a gaseous flow comprising high concentrated carbon dioxide from said flow of waste gas through said gas semipermeable material, and employing at least a portion of said gaseous flow comprising high concentrated carbon dioxide as feed raw material in an industrial production plant and/or stockpiling at least a portion of said gaseous flow comprising carbon dioxide.

Claims

1. Process for the separation and recovery of carbon dioxide from waste gases produced by combustible oxidation comprising the steps of:

feeding a flow of waste gas to a gas semipermeable material that is a molecular sieve or activated carbon of TSA type,

separating a gaseous flow comprising high concentrated carbon dioxide from said flow of waste gas through said gas-semipermeable material, and

employing at least a portion of said gaseous flow comprising high concentrated carbon dioxide as feed raw material in an industrial production plant and/or stockpiling at least a portion of said gaseous flow comprising carbon dioxide.

2. Process according to claim 1, wherein said gas semipermeable material is able to adsorb preferentially carbon dioxide and the separation of the gaseous flow comprising high concentrated carbon dioxide from said waste gas flow comprises the steps of:

letting a waste gas flow permeate into said gas semipermeable material in such a way to adsorb at least a relevant portion of the carbon dioxide contained within said waste gas flow and to obtain a permeated gas flow with low carbon dioxide content,

dispersing said permeated gas flow with low carbon dioxide content, and

deadsorbing said at least one relevant portion of carbon dioxide from said gas semipermeable material, thus obtaining said gaseous flow comprising high concentrated carbon dioxide.

3. Process according to any of the preceding claims, wherein said combustible is a fossil fuel.

4. Process according to any of the preceding claims, wherein said plant for industrial production is a plant for the production of ammonia and urea or methanol.