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    A PROCESS FOR PRODUCING GLUTAMIC ACID
    1.
    发明公开
    A PROCESS FOR PRODUCING GLUTAMIC ACID 失效
    PROCESS FOR谷氨酸的生产

    公开(公告)号：EP0886633A1

    公开(公告)日：1998-12-30

    申请号：EP97901153

    申请日：1997-01-21

    Applicant: AMYLUM NV ,  STALEY MFG CO A E

    Inventor： CAMI PIERRE ,  EYAL AHARON

    IPC: C07C227/28 ,  C07C227/40 ,  C07C229/24

    CPC classification number: C07C227/40 ,  C07C227/28

    Abstract: The invention provides an indirect acidulation process for producing glutamic acid from an aqueous feed containing glutamate resulting from fermentation, comprising the steps of a) contacting said aqueous feed stream at an elevated temperature with a weak acid cation exchanger (WACE) which is at least partially in its acid form whereby part of the cations in the solution is taken up by the cation exchanger and protons are introduced into the solution; b) contacting a second aqueous feed containing glutamate and cations at an elevated temperature with a strong acid cation exchanger (SACE) that is obtained from a subsequent step and carries cationic glutamate, whereby the cationic glutamate is transferred into the solution and most of the cations in the second aqueous feed are taken up by the SACE; c) crystallizing glutamic acid from the effluent of step (b); d) contacting the mother liquor of step (c) with SACE which is at least partially in its acid form whereby cationic glutamate is bound; e) utilizing the SACE obtained in step (d) in step (b); f) regenerating the SACE from step (b) to its at least partially acid form by a solution of a strong acid and utilizing the SACE in its at least partially acid form in step (d) while forming an effluent containing an acidic solution of salts, comprising cations bound to the cation exchanger in step (b) and the anions of the strong acid; g) regenerating the WACE from step (a) to its at least partially acid form by the effluent from step (f) and utilizing the WACE in its at least partially acid form in step (a) while forming an effluent containing a solution of salts, comprising cations bound to the cation exchangers in steps (a) and (b) and the anions of the strong acid; and h) directing the salt solution obtained as the effluent of step (g) for commercial use.

    Process for producing glutamic acid
    2.
    发明专利
    Process for producing glutamic acid 未知

    公开(公告)号：IL116848A

    公开(公告)日：2000-06-01

    申请号：IL11684896

    申请日：1996-01-22

    Applicant: AMYLUM NV ,  STALEY MFG CO A E

    Inventor： CAMI PIERRE ,  EYAL AHARON

    IPC: C07C227/28 ,  C07C227/40 ,  C07C229/24 ,  C07C227/00

    Abstract: PCT No. PCT/GB97/00177 Sec. 371 Date Oct. 7, 1998 Sec. 102(e) Date Oct. 7, 1998 PCT Filed Jan. 21, 1997 PCT Pub. No. WO97/27170 PCT Pub. Date Jul. 31, 1997An indirect acidulation process for producing glutamic acid from an aqueous feed containing a glutamate resulting from fermentation includes: a) contacting an aqueous feed stream at an elevated temperature with a weak acid cation exchanger (WACE) which is at least partially in its acid form, whereby a part of the cations in the solution is taken up by the cation exchanger and protons are introduced into the solution; b) contacting a second aqueous feed containing glutamate and cations at an elevated temperature with a strong acid cation exchanger (SACE) that is obtained from a subsequent step and carries cationic glutamate, whereby the cationic glutamate is transferred into the solution and most of the cations in the second aqueous feed are taken up by the SACE; c) crystallizing glutamic acid from the effluent of step (b); d) contacting the mother liquor of step (c) with the SACE which is at least partially in its acid form whereby cationic glutamate is bound; e) utilizing the SACE obtained in step (d) in step (b); f) regenerating the SACE from step (b) to its at least partially acid form by a solution of a strong acid and utilizing the SACE in its at least partially acid form in step (d) while forming an effluent containing an acidic solution of salts, comprising cations bound to the cation exchanger in step (b) and the anions of the strong acid; g) regenerating the WACE from step (a) to its at least partially acid form by the effluent from step (f) and utilizing the WACE in its at least partially acid form in step (a) while forming an effluent containing a solution of salts, comprising cations bound to the cation exchangers in steps (a) and (b) and the anions of the strong acid; and h) directing the salt solution obtained as the effluent of step (g) for commercial use.

    6.
    发明专利
    未知

    公开(公告)号：BR9707180A

    公开(公告)日：1999-12-28

    申请号：BR9707180

    申请日：1997-01-21

    Applicant: AMYLUM NV ,  STALEY MFG CO A E

    Inventor： CAMI PIERRE ,  EYAL AHARON

    IPC: C07C227/28 ,  C07C227/40 ,  C07C229/24

    Abstract: PCT No. PCT/GB97/00177 Sec. 371 Date Oct. 7, 1998 Sec. 102(e) Date Oct. 7, 1998 PCT Filed Jan. 21, 1997 PCT Pub. No. WO97/27170 PCT Pub. Date Jul. 31, 1997An indirect acidulation process for producing glutamic acid from an aqueous feed containing a glutamate resulting from fermentation includes: a) contacting an aqueous feed stream at an elevated temperature with a weak acid cation exchanger (WACE) which is at least partially in its acid form, whereby a part of the cations in the solution is taken up by the cation exchanger and protons are introduced into the solution; b) contacting a second aqueous feed containing glutamate and cations at an elevated temperature with a strong acid cation exchanger (SACE) that is obtained from a subsequent step and carries cationic glutamate, whereby the cationic glutamate is transferred into the solution and most of the cations in the second aqueous feed are taken up by the SACE; c) crystallizing glutamic acid from the effluent of step (b); d) contacting the mother liquor of step (c) with the SACE which is at least partially in its acid form whereby cationic glutamate is bound; e) utilizing the SACE obtained in step (d) in step (b); f) regenerating the SACE from step (b) to its at least partially acid form by a solution of a strong acid and utilizing the SACE in its at least partially acid form in step (d) while forming an effluent containing an acidic solution of salts, comprising cations bound to the cation exchanger in step (b) and the anions of the strong acid; g) regenerating the WACE from step (a) to its at least partially acid form by the effluent from step (f) and utilizing the WACE in its at least partially acid form in step (a) while forming an effluent containing a solution of salts, comprising cations bound to the cation exchangers in steps (a) and (b) and the anions of the strong acid; and h) directing the salt solution obtained as the effluent of step (g) for commercial use.

    A process for the preparation of monosodium glutamate
    7.
    发明专利
    A process for the preparation of monosodium glutamate 未知

    公开(公告)号：AU5012796A

    公开(公告)日：1996-10-23

    申请号：AU5012796

    申请日：1996-04-04

    Applicant: AMYLUM NV ,  STALEY MFG CO A E

    Inventor： CAMI PIERRE ,  AHARON EYAL

    IPC: C07C227/40 ,  C07C227/42 ,  C07C229/24 ,  C12P13/14 ,  C07C227/28 ,  B01J41/04

    Abstract: PCT No. PCT/IB96/00286 Sec. 371 Date Feb. 10, 1998 Sec. 102(e) Date Feb. 10, 1998 PCT Filed Apr. 4, 1996 PCT Pub. No. WO96/31459 PCT Pub. Date Oct. 10, 1996The invention provides a process for the preparation of monosodium glutamate from a fermentatively prepared solution containing monoammonium glutamate, the process comprising: a) contacting the solution containing monoammonium glutamate salt with a basic anion exchange resin of at least medium strength to split the salt, whereby glutamate anions attach to the anion exchanger and ammonia is released in the solution; b) subjecting the ammonia-containing solution to distillation, to recover volatile ammonia therefrom; c) contacting the glutamate-containing anion exchange resin with a sodium base solution to regenerate the basic anion exchanger and to directly form monosodium glutamate salt in solution; and d) crystallizing monosodium glutamate salt directly from the monosodium glutamate-containing solution, wherein the crystallized salt has a purity of at least 98%.

    9.
    发明专利
    未知

    公开(公告)号：DE69712328D1

    公开(公告)日：2002-06-06

    申请号：DE69712328

    申请日：1997-01-21

    Applicant: AMYLUM EUROPE NV ,  STALEY MFG CO A E

    Inventor： CAMI PIERRE ,  EYAL AHARON

    IPC: C07C227/28 ,  C07C227/40 ,  C07C229/24

    Abstract: PCT No. PCT/GB97/00177 Sec. 371 Date Oct. 7, 1998 Sec. 102(e) Date Oct. 7, 1998 PCT Filed Jan. 21, 1997 PCT Pub. No. WO97/27170 PCT Pub. Date Jul. 31, 1997An indirect acidulation process for producing glutamic acid from an aqueous feed containing a glutamate resulting from fermentation includes: a) contacting an aqueous feed stream at an elevated temperature with a weak acid cation exchanger (WACE) which is at least partially in its acid form, whereby a part of the cations in the solution is taken up by the cation exchanger and protons are introduced into the solution; b) contacting a second aqueous feed containing glutamate and cations at an elevated temperature with a strong acid cation exchanger (SACE) that is obtained from a subsequent step and carries cationic glutamate, whereby the cationic glutamate is transferred into the solution and most of the cations in the second aqueous feed are taken up by the SACE; c) crystallizing glutamic acid from the effluent of step (b); d) contacting the mother liquor of step (c) with the SACE which is at least partially in its acid form whereby cationic glutamate is bound; e) utilizing the SACE obtained in step (d) in step (b); f) regenerating the SACE from step (b) to its at least partially acid form by a solution of a strong acid and utilizing the SACE in its at least partially acid form in step (d) while forming an effluent containing an acidic solution of salts, comprising cations bound to the cation exchanger in step (b) and the anions of the strong acid; g) regenerating the WACE from step (a) to its at least partially acid form by the effluent from step (f) and utilizing the WACE in its at least partially acid form in step (a) while forming an effluent containing a solution of salts, comprising cations bound to the cation exchangers in steps (a) and (b) and the anions of the strong acid; and h) directing the salt solution obtained as the effluent of step (g) for commercial use.

    10.
    发明专利
    未知

    公开(公告)号：AT194827T

    公开(公告)日：2000-08-15

    申请号：AT96906880

    申请日：1996-04-04

    Applicant: AMYLUM BELGIUM ,  STALEY MFG CO A E

    Inventor： CAMI PIERRE ,  EYAL AHARON

    IPC: C07C227/40 ,  C07C227/42 ,  C07C229/24 ,  C12P13/14 ,  C07C227/28 ,  B01J41/04

    Abstract: PCT No. PCT/IB96/00286 Sec. 371 Date Feb. 10, 1998 Sec. 102(e) Date Feb. 10, 1998 PCT Filed Apr. 4, 1996 PCT Pub. No. WO96/31459 PCT Pub. Date Oct. 10, 1996The invention provides a process for the preparation of monosodium glutamate from a fermentatively prepared solution containing monoammonium glutamate, the process comprising: a) contacting the solution containing monoammonium glutamate salt with a basic anion exchange resin of at least medium strength to split the salt, whereby glutamate anions attach to the anion exchanger and ammonia is released in the solution; b) subjecting the ammonia-containing solution to distillation, to recover volatile ammonia therefrom; c) contacting the glutamate-containing anion exchange resin with a sodium base solution to regenerate the basic anion exchanger and to directly form monosodium glutamate salt in solution; and d) crystallizing monosodium glutamate salt directly from the monosodium glutamate-containing solution, wherein the crystallized salt has a purity of at least 98%.

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