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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No:
1618/MAS/1997A
(22) Date of filing of Application:21/07/1997 (43) Publication Date: 09/06/2006
(54) Title of the invention:
A PROCESS AND A SYSTEM FOR THE
REMOVAL AND HIGH PRESSURE
RECOVERY OF CARBON DI OXIDE
FROM A HIGH PRESSURE RAW GAS.
(51)International classification:C 10 L 3/00
(31) Priority Document No.226543/1996
(32) Priority Date:28/08/1996
(33) Name of priority country:JAPAN .
(87) WIPO No. :
(61) Patent of addition to
Application No. :
Filed on:
(62) Divisional to
Applcation No.:
Filed on:
(57)Abstract
(71) Name of Applicant
MITSUBISHI HEAVY INDUSTRIES
LTD,
Address of Applicant:
5-1,MARUNOUCHI 2-CHOME,
CHIYODA-KU,
TOKYO,
JAPAN.
(72) Name of the Inventor(s):
MASAKI IIJIMA.
SHIGEAKI MITSUOKA.
HIROSHI TANAKA.
This invention provides a process and a system for the removal and high- pressure recovery of carbon dioxide from a
high-pressure raw gas wherein a raw gas containing carbon dioxide is fed to a decarbonation tower where the raw gas
is brought into gas-liquid contact with a partially regenerated absorbing fluid in a lower absorption section so as to
cause carbon dioxide to be partially absorbed thereinto, and then brought into gas-liquid contact with a regenerated
absorbing fluid in an upper absorption section so as to cause carbon dioxide to be absorbed thereinto until a very low
carbon dioxide concentration is reached; and high-pressure carbon dioxide is recovered from the resulting carbon
dioxide-loaded absorbing fluid, as well as a system therefore. This invention makes it possible to remove highly
concentrated carbon dioxide from high-pressure natural gas and various synthesis gases with the aid of a carbon
dioxide absorbing fluid until a very low carbon dioxide concentration is reached and, moreover, to recover highpressure
carbon dioxide from the absorbing fluid.
The Patent Office Journal 09/06/2006 10805