Column for carrying out gas/liquid mass-transfer processes

Patent metadata

Field	Value
Publication number	US-9248382-B2
Application number	US-201414187460-A
Country	US
Kind code	B2
Filing date	Feb 24, 2014
Priority date	Mar 8, 2013
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

The invention relates to a column for carrying out gas/liquid mass-transfer processes, wherein, in the column ( 27 ), at least one lock ( 15 ) bordered by an upper separating tray ( 17 ) and a lower separating tray ( 19 ) is received, which lock is designed in such a manner that, during the mass-transfer process, gas ( 23 ) flows through the lock ( 15 ) and a liquid ( 25 ) situated on the upper separating tray ( 17 ), when the gas supply is interrupted the liquid ( 25 ) flows into the lock ( 15 ) onto the lower separating tray ( 19 ) and when the gas supply is renewed, the liquid ( 25 ) drains downward out of the lock ( 15 ). The lower separating tray ( 19 ) has a tray ( 1 ) that can be mounted so as to be fixed and has at least one opening ( 3 ), and a rotatable tray ( 13 ) which is connected to a rotatable axle ( 21 ) that is conducted through the tray ( 1 ) that can be mounted so as to be fixed, in such a manner that the rotatable tray ( 13 ) can be turned in relation to the tray ( 1 ) that can be mounted so as to be fixed, wherein the rotatable tray ( 13 ) of the lower separating tray ( 19 ) is designed in such a manner that the at least one opening ( 3 ) in the tray ( 1 ) that can be mounted so as to be fixed is closed in a first position of the rotatable tray ( 13 ) and can be opened by turning the rotatable tray ( 13 ).

First claim

The invention claimed is:

1. A column for carrying out gas/liquid mass-transfer processes, wherein, in the column ( 27 ), at least one lock ( 15 ) bordered by an upper separating tray ( 17 ) and a lower separating tray ( 19 ) is received, which lock is designed in such a manner that, during the mass-transfer process, gas ( 23 ) flows through the lock ( 15 ) and a liquid ( 25 ) situated on the upper separating tray ( 17 ), when the gas supply is interrupted the liquid ( 25 ) flows into the lock ( 15 ) onto the lower separating tray ( 19 ) and when the gas supply is renewed, the liquid ( 25 ) drains downward out of the lock ( 15 ), wherein the lower separating tray ( 19 ) has a tray ( 1 ) that can be mounted so as to be fixed and has at least one opening ( 3 ), and a rotatable tray ( 13 ) which is connected to a rotatable axle ( 21 ) that is conducted through the tray ( 1 ) that can be mounted so as to be fixed, in such a manner that the rotatable tray ( 13 ) can be turned in relation to the tray ( 1 ) that can be mounted so as to be fixed, wherein the rotatable tray ( 13 ) is designed in such a manner that the at least one opening ( 3 ) in the tray ( 1 ) that can be mounted so as to be fixed is closed in a first position of the rotatable tray ( 13 ) and can be opened by turning the rotatable tray ( 13 ).

2. The column according to claim 1 , wherein the upper and lower separating trays ( 17 ; 19 ) comprise a tray ( 1 ) which can be mounted so as to be fixed and has at least one opening ( 3 ), and a rotatable tray ( 5 ; 13 ) which is connected to a rotatable axle ( 21 ) that is conducted through the tray ( 1 ) that can be mounted so as to be fixed, wherein the opening ( 3 ) in the tray ( 1 ) that can be mounted so as to be fixed of the upper separating tray ( 17 ) is open in the first position of the rotatable tray ( 13 ) of the lower separating tray ( 19 ), and by turning the rotatable tray ( 5 ) of the upper separating tray ( 17 ) having a sieve insert ( 11 ) is closed, in such a manner that gas can flow through the sieve insert ( 11 ) and the opening ( 3 ), but no liquid flows through the opening ( 3 ) into the lock ( 15 ) when the rotatable tray ( 13 ) of the lower separating tray ( 19 ) is in a position in which the opening ( 3 ) in the tray ( 1 ) that can be mounted so as to be fixed of the lower separating tray ( 19 ) is open.

3. The column according to claim 1 , wherein the upper separating tray ( 17 ) is designed as a fixed tray in such a manner that in the case of a gas flow, no liquid drains from the tray and the liquid drains from the upper separating tray ( 17 ) as soon as the gas flow is interrupted.

4. The column according to claim 1 , wherein the upper and/or lower separating tray ( 17 ; 19 ) comprises two trays ( 1 ) that can be mounted so as to be fixed, wherein the rotatable tray ( 5 ; 13 ) is positioned between the trays ( 1 ) that can be mounted so as to be fixed.

5. The column according to claim 2 , wherein the sieve insert ( 11 ) in the rotatable tray ( 5 ) of the upper separating tray ( 17 ) is an insert having a defined reduction of the cross section through which flow passes.

6. The column according to claim 1 , wherein all rotatable trays ( 5 ; 13 ) are connected to a shared rotatable axle ( 21 ), wherein the rotatable trays ( 5 ; 13 ) are arranged in each case in such a manner that when an opening ( 3 ) of the tray ( 1 ) that can be mounted so as to be fixed of the lower separating tray ( 19 ) is open, the opening ( 3 ) of the tray ( 1 ) that can be mounted so as to be fixed of the upper separating tray ( 17 ) having the sieve insert ( 11 ) is closed and when an opening ( 3 ) of the tray ( 1 ) that can be mounted so as to be fixed of the upper separating tray ( 17 ) is open, the opening ( 3 ) of the tray ( 1 ) that can be mounted so as to be fixed of the lower separating tray ( 19 ) is closed.

7. The column according to claim 1 , wherein the rotatable tray ( 5 ; 13 ) has at least one opening ( 9 ) which, to open the opening ( 3 ) in the trays ( 1 ) that can be mounted so as to be fixed, is brought into the position of the opening ( 3 ) of the trays ( 1 ) that can be mounted so as to be fixed.

8. The column according to claim 7 , wherein the at least one opening ( 9 ) in the rotatable tray ( 5 ; 13 ) is designed in such a manner that the complete opening ( 3 ) in the tray ( 1 ) that can be mounted so as to be fixed is cleared when the rotatable tray ( 5 ; 13 ) is brought into the position in which the opening ( 3 ) in the tray ( 1 ) that can be mounted so as to be fixed is open.

9. The column according to claim 7 , wherein the trays ( 1 ) that can be mounted so as to be fixed and the rotatable trays ( 5 ; 13 ) each have at least two openings ( 9 ).

10. The column according to claim 7 , wherein the openings ( 3 ) in the trays ( 1 ) that can be mounted so as to be fixed and in the rotatable trays ( 5 ; 13 ) are arranged centrically symmetrically about the center point ( 7 ).

11. The column according to claim 1 , wherein the cross-sectional area of all openings ( 3 ) on a tray ( 1 ) that can be mounted so as to be fixed is less than 50% of the cross-sectional area of the tray ( 1 ).

Assignees

• Basf Se

Inventors

• Giese Reiner
• Schmidt Egon

Classifications

• B01D3/163

  Plates with valves · CPC title

• B01D3/30 Primary

  Fractionating columns with movable parts or in which centrifugal movement is caused · CPC title