PROCESS FOR CONDITIONING A CONTAINER COMPRISING A GRANULAR MATERIAL

• US 20200129915A1
• Filed: 10/24/2019
• Published: 04/30/2020
• Est. Priority Date: 10/26/2018
• Status: Active Grant

• Current Assignee: L'Air Liquide Societe Anonyme Pour L'Etude et L'Exploitation Des Procedes Georges Claude (L'Air Liquide SA)
• Original Assignee: L'Air Liquide Societe Anonyme Pour L'Etude et L'Exploitation Des Procedes Georges Claude (L'Air Liquide SA)
• Inventors: GUERET, Vincent, RODRIGUES, Guillaume
• Granted Patent: US 11,583,799 B2
• Time in Patent Office: Days
• CPC Class Codes: B01D 2253/108 Zeolites
• CPC Class Codes: B01D 2257/40 Nitrogen compounds
• CPC Class Codes: B01D 2259/4525 for storage and dispensing systems
• CPC Class Codes: B01D 53/0476 Vacuum pressure swing adsorption
• CPC Class Codes: B01D 53/053 with storage or buffer vessel
• CPC Class Codes: B01J 20/186 Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity
• CPC Class Codes: B01J 20/30 Processes for preparing, regenerating, or reactivating
• CPC Class Codes: B01J 20/3092 Packing of a container, e.g. packing a cartridge or column of chromatography columns B01D15/206
• CPC Class Codes: B01J 20/3458 in the gas phase
• CPC Class Codes: B01J 20/3491 by pressure treatment
• CPC Class Codes: B65B 31/02 Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
• CPC Class Codes: F17C 11/00 Use of gas-solvents or gas-sorbents in vessels absorbing compositions for acetylene C10L3/04; absorbing compositions for hydrogen C01B3/0005

Abstract

Process for conditioning a container including a granular material A enabling the adsorption of the nitrogen contained in a feed gas stream, including a step of injecting, into the container, a gas or a gas mixture G such that the adsorption capacity of the material A with respect to G is less than 10 Ncm³/g at 25° C. and 1 atm.

Claims

1. A process for conditioning a container comprising a granular material A enabling the adsorption of the nitrogen contained in a feed gas stream, comprising a step of injecting, into the container, a gas or a gas mixture G such that the adsorption capacity of the material A with respect to G is less than 10 Ncm³/g at 25°

C. and 1 atm.

2. The process according to claim 1, wherein the container is a container intended to store the adsorbent in a manner that is impermeable to the air located outside of the container.

3. The process according to claim 1, wherein the container is an adsorber.

4. The process according to claim 3, wherein the adsorber is an adsorber of V(P)SA O2 type.

5. The process according to claim 3, wherein said process comprises, after the injection step, a step of pressurizing the inside of the adsorber to a pressure of between 1.05 bar and 3 bar.

6. The process according to claim 1, wherein the injection step consists of an inflation with the gas G, a flushing of the gas G through the granular material A, inflations with the gas G, successive deflations or a combination of at least two of these methods.

7. The conditioning process according to claim 1, wherein the adsorption capacity of the material A with respect to G is less than 5 Ncm³/g at 25°

C. and 1 atm.

8. The conditioning process according to claim 1, wherein the granular material A is selected from zeolites of A and X structures exchanged at least partially with one or more elements selected from lithium, calcium, sodium, potassium, zinc or silver.

9. The conditioning process according to claim 1, wherein the gas G is selected from argon, oxygen and helium.