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    SYSTEM FOR SYSTEM FOR PREPARING HIGH-PURITY TAURINE AND SALT
    5.
    发明公开
    SYSTEM FOR SYSTEM FOR PREPARING HIGH-PURITY TAURINE AND SALT 审中-公开

    公开(公告)号：US20230183173A1

    公开(公告)日：2023-06-15

    申请号：US18109074

    申请日：2023-02-13

    申请人： QIANJIANG YONGAN PHARMACEUTICAL CO LTD

    发明人： Yong CHEN ,  Xiquan FANG ,  Shaobo LI ,  Feng LIU

    IPC分类号： C07C303/22 ,  B01J39/18 ,  C07C303/44 ,  C07C303/32

    CPC分类号： C07C303/22 ,  B01J39/18 ,  C07C303/44 ,  C07C303/32

    摘要： A system for preparing high-purity taurine and salt. The system can be used in an ethylene oxide process for producing taurine. The system includes an addition reaction device, an ammonolysis reaction device, an evaporation device, and a taurine salt concentrated solution collection device. The ammonolysis reaction device is provided with a metal salt inlet, the taurine salt concentrated solution collection device is connected with an ion exchange system for ion exchange, the ion exchange system is provided with an acid inlet, an adsorption solution outlet and an eluate outlet, the adsorption solution outlet of the ion exchange system is connected with a taurine extraction device, the eluate outlet of the ion exchange system is connected with a salt extraction device, and the ion exchange system is provided with a purified water inlet, an adsorption unit cleaning water outlet and an elution unit cleaning water outlet.

    METHOD FOR PREPARING TAURINE
    7.
    发明申请
    METHOD FOR PREPARING TAURINE 有权

    公开(公告)号：US20220281811A1

    公开(公告)日：2022-09-08

    申请号：US17402617

    申请日：2021-08-16

    申请人： QIANJIANG Yongan Pharmaceutical CO., LTD.

    发明人： Yong Chen ,  Xiquan Fang ,  Shaobo Li ,  Feng Liu

    IPC分类号： C07C303/22 ,  C07C303/44

    摘要： The present invention discloses a method for preparing taurine. According to the method, ethylene oxide reacts with hydrosulphite to generate isethionate, after the isethionate and ammonia are subjected to an ammonolysis reaction under a microwave condition, ammonia removal is conducted to obtain a taurine salt solution, the taurine salt solution is converted into a taurine solution through acidification or ion exchange or ion membrane or heating, and taurine is extracted through concentration and crystallization. According to the present invention, the reaction time can be shortened, and the reaction temperature and pressure can be reduced, thereby achieving high yield and reducing energy consumption.

    METHOD FOR REDUCING THE CONCENTRATION OF SO3 IN A REACTION MIXTURE COMPRISING METHANE SULFONIC ACID AND SO3
    8.
    发明申请
    METHOD FOR REDUCING THE CONCENTRATION OF SO3 IN A REACTION MIXTURE COMPRISING METHANE SULFONIC ACID AND SO3 有权

    公开(公告)号：US20220259143A1

    公开(公告)日：2022-08-18

    申请号：US17625672

    申请日：2020-07-02

    申请人： BASF SE

    发明人： Timo OTT

    IPC分类号： C07C303/44

    摘要： The present invention refers to a method for reducing SO3 concentration in a mixture comprising methane sulfonic acid and SO3, the method comprising: i. providing a mixture comprising methane sulfonic acid and SO3, ii. determining the amount of an additive necessary to reduce the concentration of SO3 in the mixture by forming a reaction product between the additive and SO3, iii. introducing said predetermined amount of the additive into the mixture; iv. optionally repeating steps ii. and iii., wherein the determination of the amount of additive necessary to reduce the concentration of SO3 in the mixture is performed by measuring conductivity and/or density of the reaction mixture.