公开(公告)号：JPH05294902A

公开(公告)日：1993-11-09

申请号：JP22696992

申请日：1992-08-26

Applicant: CONOCO INC

Inventor： AASAA ERU KAMINGUSU ,  FURETSUDO SHII BIICHI ,  ARUFURETSUDO II KERAA ,  JIEEMUSU SHII TONPUSON

IPC: C07C213/10 ,  B01D53/14 ,  B01J41/04 ,  B01J49/00 ,  C07C215/08 ,  C07C215/10

公开(公告)号：JPH06126196A

公开(公告)日：1994-05-10

申请号：JP28904792

申请日：1992-10-27

Applicant: CONOCO INC

Inventor： AASAA ERU KAMINGUSU ,  FURETSUDO SHII BIICHI ,  ARUFURETSUDO II KERAA

IPC: B01D53/50 ,  B01D53/52 ,  B01D53/77 ,  B01J39/04 ,  B01J49/00 ,  C07C213/10 ,  C07C215/08 ,  C10G45/00 ,  B01D53/34

Abstract: PURPOSE: To provide a system monitoring and controlling the regeneration of a cation resin used for removing cations from alkanolamine. CONSTITUTION: A cation exchange resin is regenerated to remove alkanolamine and alkali metal cations from the resin by eluting the resin with an alkali metal hydroxide, followed by the elution of the resin with a mineral acid. During this process, the resin is monitored by measuring and recording the conductance of the effluent from the resin and such recorded conductance is used to control the regenerant streams to provide more efficient regeneration of the resin.

公开(公告)号：JPH03178340A

公开(公告)日：1991-08-02

申请号：JP28741290

申请日：1990-10-26

Applicant: CONOCO INC

Inventor： FURETSUDO SHII BIICHI

IPC: B01D53/40 ,  B01D53/14 ,  B01D53/77 ,  B01J41/04 ,  B01J49/00

Abstract: PURPOSE: To efficiently regenerate a resin by bringing a basic anion exchange resin after ion exchange is over into contact with a base, displacing acidic anion with hydroxyl ion and subsequently bringing the resin into contact with dil. mineral acid to remove metal cation. CONSTITUTION: A resin, containing acidic anion which displaced hydroxyl ion at cationic site on a basic anion exchange resin and accumulated metal cation Fe , Fe or the like, is brought into contact with a base selected from alkali metal hydroxides and ammonium hydroxide to displace acidic anion from cationic site with hydroxyl ion. Subsequently, after an anion exchange resin is brought into contact with dil. mineral acid and accumulated metal cations are removed, the resin is brought into contact with a base to remove residual mineral acid and metal salts and the hydroxyl ion is displaced at cationic site to regenerate the basic anion exchange resin.

公开(公告)号：JPH03151051A

公开(公告)日：1991-06-27

申请号：JP28601890

申请日：1990-10-25

Applicant: CONOCO INC

Inventor： FURETSUDO SHII BIICHI ,  ARUFURETSUDO II KERAA

IPC: B01D53/14 ,  B01J39/04 ,  B01J49/00 ,  C07C213/10 ,  C07C215/06

Abstract: PURPOSE: To efficiently regenerate an acidic cation exchange resin used in the reactivation of spent alkanolamine by treating the resin with aq. ammonia to elute alkanolamine and then treating the resin with a weak mineral acid soln. CONSTITUTION: An acidic cation exchange resin used in the reactivation of spent alkanolamine is treated with an aq. ammonia soln. to elute alkanolamine from the resin with the min. displacement of alkali metal cations. The resin is then treated with a weak mineral acid soln. to elute the ammonia, metal cations and remaining alkanolamine. The resin is thus regenerated. The alkanolamine is, e.g. protonated ethanolamine, diethanolamine, methyldiethanolamine or diisopropylamine.