Method and apparatus for dynamic gas mixture production

Patent metadata

Field	Value
Publication number	US-10919003-B2
Application number	US-201816044677-A
Country	US
Kind code	B2
Filing date	Jul 25, 2018
Priority date	Sep 16, 2011
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

The present invention relates to a method for producing and delivering a gas mixture having a selected composition of a first gas and at least one second gas, comprising the following steps: (a) providing a main gas flow comprising the first gas in a main conduit, (b) separating the main gas flow into a first plurality of secondary gas flows, (c) guiding each secondary gas flow through a secondary conduit, (d) adding at least one second gas to at least one of the first plurality of secondary gas flows in the respective secondary conduit through a delivering conduit, said delivering conduit protruding into the secondary conduit, and (e) combining the first plurality of secondary gas flows to the gas mixture. With the technical teaching of the present invention a dynamic gas bottle filling is possible wherein the second gas components may have a concentration form some ppb to percent.

First claim

What is claimed is:

1. A method for producing and delivering a gas mixture having a selected composition of a first gas and at least one second gas comprising the following steps:
a) providing a main gas flow comprising the first gas in a main conduit ( 1 ),
b) separating the main gas flow into a first plurality of secondary gas flows,
c) guiding each secondary gas flow through a secondary conduit ( 2 ),
d) adding at least one second gas through a delivering conduit ( 3 ) to at least one of the first plurality of secondary gas flows in the respective secondary conduit ( 2 ), said delivering conduit ( 3 ) protruding into the secondary conduit ( 2 ),
e) combining the first plurality of secondary gas flows to form a first gas mixture,
f) separating the first gas mixture into a second plurality of secondary gas flows,
g) guiding each secondary gas flow through a secondary conduit ( 2 ),
h) adding at least one other second gas through a delivering conduit ( 3 ) to at least one of the second plurality of secondary gas flows in the respective secondary conduit ( 2 ), said delivering conduit ( 3 ) protruding into the secondary conduit ( 2 ),
i) combining the second plurality of secondary gas flows to form a second gas mixture,
wherein the amount of the at least one other second gas in step h) is greater than the amount of the at least one second gas in step d).

2. The method according to claim 1 , wherein the at least one second gas is added to the secondary gas flow through a respective delivering conduit ( 3 ) to the center of the secondary gas flow.

3. The method according to claim 1 , wherein a flow rate of the second gas in the delivering conduit ( 3 ) is adjusted by supplying the second gas to the delivering conduit ( 3 ) using a supplying frequency.

4. The method according to claim 1 , wherein a gas flow rate of the second gas in the delivering conduit ( 3 ) is grossly adjusted by the opening of a valve ( 10 ) in a first step and wherein the gas flow rate of the second gas in the delivering conduit ( 3 ) is precisely adjusted by altering the pressure at the inlet of the valve ( 10 ) in a subsequent step.

5. The method according to claim 1 , wherein a gas flow rate of the second gas in the delivering conduit ( 3 ) is grossly adjusted by the opening of a valve ( 10 ) in a first step and wherein a flow rate of the second gas in the delivering conduit ( 3 ) is precisely adjusted by withdrawing some of the second gas out of the conduit leading to the inlet of the valve ( 10 ).

6. The method according to claim 1 , wherein the second gas is initially a fluid and is atomized and advanced through the delivering conduit ( 3 ) by an atomizing gas.

Assignees

• Air Liquide

Inventors

• Pongraz Johann
• Kihumbu David
• Jacksier Tracey
• Muller Denis

Classifications

• B01F23/10 Primary

  Mixing gases with gases · CPC title

• B01F23/19 Primary

  Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means · CPC title

• B01F25/31322

  used simultaneously · CPC title

• B01F25/30

  Injector mixers (mixing by creating vortex flow B01F25/10) · CPC title

• B01F5/0456

  Operations & Transport · mapped topic