continued from part 1 - Controller General of Patents, Designs, and ...

(12) PATENT APPLICATION PUBLICATION (21) Application No.6509/DELNP/2008 A
(19) INDIA
(22) Date of filing of Application :25/07/2008 (43) Publication Date : 24/10/2008
(54) Title of the invention : "METHOD FOR REGULATING A SERIES OF APPARATUS FOR SEPARATING AIR BY
CRYOGENIC DISTILLATION AND SERIES OF APPARATUS FOR SEPARATING AIR OPERATING ACCORDING TO SAID
METHOD"
(51) International classification :F25J 3/04
(71)Name of Applicant :
(31) Priority Document No :0650333
1)L`AIR LIQUIDE SOCIETE ANONYME FOUR
(32) Priority Date :31/01/2006 L`ETUDE ET L`EXPLOITATION DES PROCEDES
(33) Name of priority country :France
GEORGES CLAUDE
(86) International Application No :PCT/EP2007/050511 Address of Applicant :75 QUAI D`ORSAY,F-75007
Filing Date
:18/01/2007 PARIS,FRANCE. France
(87) International Publication No :WO 2007/088107 (72)Name of Inventor :
(61) Patent of Addition to Application
Number
Filing Date
:NA
:NA
1)JEAN-FRANCOIS RAUCH
(62) Divisional to Application Number :NA
Filing Date
:NA
(57) Abstract :
In a method for regulating a series of apparatus for separating air by cryogenic distillation, the scries comprising N air separation
apparatus (1, 2, 3, 4), where N>1, an air gas having substantially the same composition is sent from the N apparatus to a consuming
unit (5), each apparatus comprising a system of distillation columns (1 B, 2B, 3B, 4B) and an air purification unit (1A, 2A, 3A, 4A) of
the type in which at least two adsorbers are used, each, with a phase shift, following the same cycle in which an adsorption phase, at a
high cycle pressure, and a regeneration phase with depressuri/.ation, terminating in a repressurization of the adsorber, succeed one
another, the method comprising a step in which the adsorbers of a unit are placed in parallel, each apparatus having an adsorption
cycle time and the operation of at least some of the purification units is regulated so that the repressurization step for one apparatus
begins at a different time from the beginning of the repressurization for another apparatus.
No. of Pages : 15 No. of Claims : 11
The Patent Office Journal 24/10/2008 26034