Gas-liquid separator and super-critical fluid device

Patent metadata

Field	Value
Publication number	US-11226317-B2
Application number	US-201916665209-A
Country	US
Kind code	B2
Filing date	Oct 28, 2019
Priority date	Sep 17, 2014
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

A gas-liquid separator according to an embodiment of the present invention separates a mobile phase containing a gas and a liquid into a gas and a liquid. The gas-liquid separator according to the embodiment of the present invention includes an introduction flow channel to which a mobile phase is introduced, and a plurality of discharge flow channels connected to the introduction flow channel. A gas and a liquid are discharged from a discharge port of the discharge flow channel.

First claim

The invention claimed is:

1. A gas-liquid separating method for separating a mobile phase containing a gas and a liquid into a gas and a liquid in a super-critical fluid device, the method comprising:
an introducing step introducing a mobile phase to an introduction flow channel,
a branching step branching the mobile phase flowing from the introduction flow channel into a plurality of discharge flow channels,
a discharging step discharging a gas and a liquid from each discharge port of the plurality of discharge flow channels,
a separating step separating the gas and the liquid after discharge; and
a liquid collecting step that the liquid discharged from each discharge port of the plurality of discharge flow channels moves on an outer wall surface of a liquid collecting member while being adhered thereto.

2. The gas-liquid separating method according to claim 1 , wherein the liquid collecting member has a cylindrical shape or a cone shape.

3. The gas-liquid separating method according to claim 1 , wherein
at least a part of each discharge flow channel of the plurality of discharge flow channels is formed within the liquid collecting member, and
each discharge port of the plurality of discharge flow channels is formed on the outer wall surface of the liquid collecting member.

4. The gas-liquid separating method according to claim 1 ,
wherein each internal diameter of the plurality of discharge flow channels is 2 mm or less.

5. The gas-liquid separating method according to claim 1 , wherein the plurality of discharge flow channels are each vertically arranged.

6. The gas-liquid separating method according to claim 1 , wherein
in the liquid collecting step,
the liquid is caught by the outer wall surface of the liquid collecting member and maintains contact with the outer wall surface of the liquid collecting member by a phenomenon called the Coanda effect, and moves along the outer wall surface to flow, and
the gas is released to a free space irrespectively of the outer wall surface of the liquid collecting member.

7. The gas-liquid separating method according to claim 1 , wherein the gas is CO2.

8. The gas-liquid separating method according to claim 1 , wherein the liquid is a modifier.

Assignees

• Shimadzu Corp

Inventors

• Goto Hiroomi
• KAJIYAMA Risa
• Mori Takahiro

Classifications

• G01N35/109

  with two horizontal degrees of freedom · CPC title

• G01N1/4055

  by solubility techniques · CPC title

• B01D19/00

  Degasification of liquids · CPC title

• B01D19/0042

  modifying the liquid flow (B01D19/0021 takes precedence) · CPC title

• B01D15/40

  using supercritical fluid as mobile phase or eluent · CPC title