ADSORPTION PROCESS AND AN INSTALLATION THEREFOR

• US 3,738,084 A
• Filed: 02/22/1972
• Issued: 06/12/1973
• Est. Priority Date: 02/24/1971
• Status: Expired due to Term

• Current Assignee: Guy Simonet, Hubert Rico
• Original Assignee: Guy Simonet, Hubert Rico
• Inventors: Simonet, Guy, Rico, Hubert
• Primary Examiner(s): Hart, Charles N.
• Application Number:
  US05/228,116
• Time in Patent Office: 476 Days
• Field of Search: 55/31,33,58,62,74,75,178,208,68
• US Class Current: 95/105
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 2257/80 Water
• CPC Class Codes: B01D 2259/402 using two beds
• CPC Class Codes: B01D 2259/4146 Contiguous multilayered adsorbents
• CPC Class Codes: B01D 2259/4575 in aeroplanes or space ships
• CPC Class Codes: B01D 53/04 with stationary adsorbents B01D53/025 takes precedence
• CPC Class Codes: B01D 53/261 by adsorption
• CPC Class Codes: Y02C 20/40 of CO2

Abstract

An adsorption process and installation permitting at least the partial elimination of water and carbon dioxide contained in a gas to be purified, is provided. In adsorption phase, the gas is caused to flow in contact with an adsorbant substance contained in an adsorption vessel which includes in the direction of flow of the gas to be purified, a first adsorptive bed for the desiccation of said gas and a second adsorptive bed for the decarbonation of said gas. The adsorptive substance is regenerated in a regeneration phase which comprises a first stage wherein solely the second adsorptive bed is heated and the pressure of the adsorption vessel is reduced to effect desorption of the second adsorptive bed, a second stage wherein said heating is interrupted and the adsorptive substance is scavenged by a gas which has been purified at least partially of carbon dioxide and water so as to reheat the first adsorptive bed and to desorb the first adsorptive bed, and to cool the second adsorptive bed, and a third stage wherein the scavenging of the adsorptive substance is continued and solely the first adsorptive bed is cooled.

Claims

2. An adsorption process according to claim 1, wherein during the third stage, a further cooling of the first adsorptive bed is effected by the circulation of a cooling fluid in said bed.

3. An adsorption process according to claim 1 in which said gas purified at least partially of carbon dioxide and water is purified gas obtained during the adsorption phase.

4. An installation for the carrying into effect the adsorption process according to claim 1, which comprises at least one adsorption vessel wherein there is disposed an adsorptive substance, and wherein the vessel comprises heating means disposed in a portion of said adsorptive substance and cooling means disposed in a further portion of said adsorptive substance.

5. An installation as claimed in claim 4, wherein the adsorptive substance comprises a first adsorptive bed for the desiccation of the gas to be purified and a second adsorptive bed for the decarbonation of said gas, and wherein the heating means is disposed in the second adsorptive bed and the cooling means is disposed in the first adsorptive bed.

6. An installation as claimed in claim 5, wherein the heating means and the cooling means are embedded, respectively, in the decarbonation bed and the desiccation bed.

7. An installation as claimed in claim 6, wherein the cooling means comprises a conduit embedded in the first adsorptive bed for the circulation of a cooling fluid.

8. An installation as claimed in claim 7, wherein said conduit is constituted by a coil and wherein said cooling fluid consists of demineralised water.