Packed column

Patent metadata

Field	Value
Publication number	US-10569190-B2
Application number	US-201715762787-A
Country	US
Kind code	B2
Filing date	Mar 3, 2017
Priority date	Mar 28, 2016
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

Provided is a packed column capable of achieving sufficiently high distillation performance even with the height of its gas-liquid contactors reduced. The packed column is a packed column which includes a gas-liquid contactor 17, 18 inside a tubular body 16 and a liquid distributor 19 in the upper most portion and causes descending liquid and ascending gas to contact each other in the gas-liquid contactor. The operation pressure is in the range of 200 to 1500 kPaG. The relative volatility is in the range of 1.9 to 3.1. The gas-liquid contactor is vertically divided into at least two parts. A gas disperser 20 is provided at at least one position between a lower one of the gas-liquid contactors and an upper one of the gas-liquid contactors, the gas disperser uniformly dispersing the composition of the ascending gas rising from the lower gas-liquid contactor toward the upper gas-liquid contactor.

First claim

The invention claimed is:

1. A packed column comprising:
a gas-liquid contactor inside a tubular body; and
a liquid distributor in an uppermost portion, which causes descending liquid and ascending gas to contact each other in the gas-liquid contactor, characterized in that
the gas-liquid contactor is vertically divided into two parts to thereby form an upper gas-liquid contactor and a lower gas-liquid contactor, and
a gas disperser provided between the lower gas-liquid contactor and the upper gas-liquid contactor, the gas disperser uniformly dispersing a composition of the ascending gas rising from the lower gas-liquid contactor toward the upper gas-liquid contactor,
wherein a ratio of the upper gas-liquid contactor above the gas disperser to an entire height of all the gas-liquid contactors in the packed column is 0.7 or greater,
wherein the gas disperser has no fluid input or output to or from the outside of the packed column, and
wherein the packed column provides a relative volatility in a range of 1.9 to 3.1 under operation pressure in a range of 200 to 1500 kPaG.

2. A packed column comprising: a gas-liquid contactor inside a tubular body; and a liquid distributor in an uppermost portion, which causes descending liquid and ascending gas to contact each other in the gas-liquid contactor, characterized in that
the gas-liquid contactor is vertically divided into at least two parts to thereby form a plurality of gas-liquid contactors, and
at least one gas disperser provided at a position between a lower one of the gas-liquid contactors and an upper one of the gas-liquid contactors, the gas disperser uniformly dispersing a composition of the ascending gas rising from the lower gas-liquid contactor toward the upper gas-liquid contactor,
wherein a ratio of a total height of the upper gas-liquid contactor above an uppermost (highest) gas disperser of the at least one gas disperser to an entire height of all the gas-liquid contactors in the packed column is 0.7 or greater,
wherein the uppermost (highest) gas disperser has no fluid input or output to or from the outside of the packed column, and
wherein the packed column provides a relative volatility in a range of 1.9 to 3.1 under operation pressure in a range of 200 to 1500 kPaG.

3. The packed column according to claim 2 , further comprising at least one intermediate liquid distributor that distributes the descending liquid again.

4. The packed column according to claim 3 , wherein at least one gas disperser of the at least one gas disperser is formed integrally with the intermediate liquid distributor.

Assignees

• Taiyo Nippon Sanso Corp

Inventors

• Ito Takeyuki
• Egoshi Nobuaki

Classifications

• B01D3/346

  the gas being used for removing vapours, e.g. transport gas · CPC title

• B01D3/32

  Other features of fractionating columns {; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30} · CPC title

• B01D3/008

  Liquid distribution · CPC title

• B01D3/20

  Bubble caps; Risers for vapour; Discharge pipes for liquid · CPC title

• F25J3/04927

  Liquid or gas distribution devices · CPC title