公开(公告)号：EP2435540B1

公开(公告)日：2018-04-04

申请号：EP10723987.3

申请日：2010-05-25

申请人： BASF SE ,  JGC Corporation

发明人： KATZ, Torsten ,  SIEDER, Georg ,  TANAKA, Koji

IPC分类号： C10K1/08

CPC分类号： C10K1/08 ,  Y02C10/06 ,  Y02E20/16 ,  Y02E20/18 ,  Y02E20/185

摘要： A process for removing carbon dioxide from a fluid comprises the steps of: (a) treating the fluid by bringing it into countercurrent contact with a liquid absorbent in a first absorption zone and thereafter in a second absorption zone to absorb at least part of the carbon dioxide contained in the fluid into the absorbent; (b) depressurizing the loaded absorbent to release a first stream of carbon dioxide and yield a partially regenerated absorbent; (c) recycling a first stream of the partially regenerated absorbent into the first absorption zone; (d) heating a second stream of the partially regenerated absorbent to release a second stream of carbon dioxide and yield a regenerated absorbent; (e) recycling the regenerated absorbent into the second absorption zone; (f) condensing water vapor entrained in the second stream of carbon dioxide by cooling the second stream of carbon dioxide and transferring at least part of the heat recovered to the partially regenerated absorbent by indirect heat exchange. The invention provides a two-stage carbon dioxide recovery process wherein the overall energy required for carbon dioxide recovery is reduced and/or wherein at least part of the carbon dioxide is recovered at a pressure higher than atmospheric pressure so as to reduce the energy required for compression of the carbon dioxide, e.g., for sequestration. Also disclosed is a plant for removing carbon dioxide from a fluid.

公开(公告)号：EP2435540A1

公开(公告)日：2012-04-04

申请号：EP10723987.3

申请日：2010-05-25

申请人： BASF SE ,  JGC Corporation

发明人： KATZ, Torsten ,  SIEDER, Georg ,  TANAKA, Koji

IPC分类号： C10K1/08

CPC分类号： C10K1/08 ,  Y02C10/06 ,  Y02E20/16 ,  Y02E20/18 ,  Y02E20/185

摘要： A process for removing carbon dioxide from a fluid comprises the steps of: (a) treating the fluid by bringing it into countercurrent contact with a liquid absorbent in a first absorption zone and thereafter in a second absorption zone to absorb at least part of the carbon dioxide contained in the fluid into the absorbent; (b) depressurizing the loaded absorbent to release a first stream of carbon dioxide and yield a partially regenerated absorbent; (c) recycling a first stream of the partially regenerated absorbent into the first absorption zone; (d) heating a second stream of the partially regenerated absorbent to release a second stream of carbon dioxide and yield a regenerated absorbent; (e) recycling the regenerated absorbent into the second absorption zone; (f) condensing water vapor entrained in the second stream of carbon dioxide by cooling the second stream of carbon dioxide and transferring at least part of the heat recovered to the partially regenerated absorbent by indirect heat exchange. The invention provides a two-stage carbon dioxide recovery process wherein the overall energy required for carbon dioxide recovery is reduced and/or wherein at least part of the carbon dioxide is recovered at a pressure higher than atmospheric pressure so as to reduce the energy required for compression of the carbon dioxide, e.g., for sequestration. Also disclosed is a plant for removing carbon dioxide from a fluid.

公开(公告)号：EP1971413B1

公开(公告)日：2012-07-11

申请号：EP06841335.0

申请日：2006-12-12

申请人： BASF SE ,  JGC Corporation

发明人： LICHTFERS, Ute ,  ASPRION, Norbert ,  CLAESSEN, Mark ,  UMINO, Hiroshi ,  TANAKA, Koji

IPC分类号： B01D53/14

CPC分类号： B01D53/1425 ,  B01D53/1475 ,  B01D53/1493 ,  B01D2257/504 ,  Y02A50/2342 ,  Y02C10/06

摘要： A process for the recovery of carbon dioxide, which includes: (a) an absorption step of bringing a carbon dioxide-containing gaseous feed stream into gas-liquid contact with an absorbing fluid, whereby at least a portion of the carbon dioxide present in the gaseous stream is absorbed into the absorbing fluid to produce (i) a refined gaseous stream having a reduced carbon dioxide content and (ii) an carbon dioxide-rich absorbing fluid; and (b) a regeneration step of treating the carbon dioxide-rich absorbing fluid at a pressure of greater than 3 bar (absolute pressure) so as to liberate carbon dioxide and regenerate a carbon dioxide-lean absorbing fluid which is recycled for use in the absorption step, in which the absorbing fluid is an aqueous amine solution containing a tertiary aliphatic alkanol amine and an effective amount of a carbon dioxide absorption promoter, the tertiary aliphatic alkanol amine showing little decomposition under specified conditions of temperature and pressure under co-existence with carbon dioxide.

公开(公告)号：EP1971413A1

公开(公告)日：2008-09-24

申请号：EP06841335.0

申请日：2006-12-12

申请人： BASF SE ,  JGC Corporation

发明人： LICHTFERS, Ute ,  ASPRION, Norbert ,  CLAESSEN, Mark ,  UMINO, Hiroshi ,  TANAKA, Koji

IPC分类号： B01D53/14

CPC分类号： B01D53/1425 ,  B01D53/1475 ,  B01D53/1493 ,  B01D2257/504 ,  Y02A50/2342 ,  Y02C10/06

摘要： A process for the recovery of carbon dioxide, which includes: (a) an absorption step of bringing a carbon dioxide-containing gaseous feed stream into gas-liquid contact with an absorbing fluid, whereby at least a portion of the carbon dioxide present in the gaseous stream is absorbed into the absorbing fluid to produce (i) a refined gaseous stream having a reduced carbon dioxide content and (ii) an carbon dioxide-rich absorbing fluid; and (b) a regeneration step of treating the carbon dioxide-rich absorbing fluid at a pressure of greater than 3 bar (absolute pressure) so as to liberate carbon dioxide and regenerate a carbon dioxide-lean absorbing fluid which is recycled for use in the absorption step, in which the absorbing fluid is an aqueous amine solution containing a tertiary aliphatic alkanol amine and an effective amount of a carbon dioxide absorption promoter, the tertiary aliphatic alkanol amine showing little decomposition under specified conditions of temperature and pressure under co-existence with carbon dioxide.