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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No:
1522/MAS/1997A
(22) Date of filing of Application:08/07/1997 (43) Publication Date: 09/06/2006
(54) Title of the invention:
A RINSING APPARATUS FOR A
SIMULATED MOVING BED
ADSORPTION UNIT, AND THE USE
THEREOF.
(51) International classification: BOID
15/02
(31) Priority Document No.96/08.839
(32) Priority Date: 11/07/1996
(33) Name of priority country: FRANCE
(87) WIPO No. :
(61) Patent of addition to
Application No. :
Filed on:
(62) Divisional to
Application No.:
Filed on:
(71) Name of Applicant
INSTITUT FRANCAIS DU PETROLE
Address of Applicant:
4, AVENUE DE BOIS PREAU,
92852 RUEIL MALMAISON CEDEX,
FRANCE.
(72) Name of the Inventor(s):
GERARD FRANCAIS DU PETROLE
(57) Abstract
A rinsing apparatus used in a simulated moving bed feed adsorption unit includes a plurality of beds of an adsorbent,
each being connected by a fluid distribution arrangement comprising a line for distributing fluids to at least one feed
inlet. The apparatus includes at least one desorbent (or solvent) inlet, at least one outlet for an extract and at least one
outlet for a raffinate. Each is characterized in that each distribution line for each bed comprises at least one rinsing
valve, all of the rinsing valves being connected to a line for circulating displaced fluid. The distribution line comprises
a fluid circulation pump and a regulator for the flow rate of the fluid delivered by the pump. Each of the rinsing valves
is connected to a controller for controlling the opening or closing of said valves. The apparatus is used for the
separation of aromatic hydrocarbons containing 8 carbon atoms, and in particular for the production of very high
purity para-xylene.
The Patent Office Journal 09/06/2006 10762