公开(公告)号：US20190105628A1

公开(公告)日：2019-04-11

申请号：US16088653

申请日：2017-02-16

Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.

Inventor： Masato Kotake ,  Tetsuya Takechi ,  Hideo Kazama

IPC: B01J8/10 ,  B01J8/08 ,  B01J20/26 ,  B01J20/30 ,  C08J3/24

Abstract: An apparatus for producing water-absorbing resin particles for which surface cross-linking treatment is conducted by spraying a surface cross-linking agent to a water-absorbing resin particle precursor and heating the agent and the precursor, the apparatus includes a treatment container in which the surface cross-linking treatment is conducted, a stirring device including a stirring member disposed in the treatment container, a heating device that heats an inside of the treatment container; and a spray nozzle disposed in the treatment container, the spray nozzle spraying into the treatment container the surface cross-linking agent supplied from a surface cross-linking agent supply source in an exterior of the treatment container through a supply pipe. In a flow path in the spray nozzle spanning from an entrance of the spray nozzle to a spray exit, a point whose opening cross-section is smallest in a flow path through which a fluid passes is the spray exit.

公开(公告)号：US11117111B2

公开(公告)日：2021-09-14

申请号：US16909145

申请日：2020-06-23

Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.

Inventor： Masato Kotake ,  Tetsuya Takechi ,  Hideo Kazama

IPC: B01J8/10 ,  C08J3/24 ,  B01J20/30 ,  B01J8/00 ,  B01J8/08 ,  B01J20/26

Abstract: An apparatus for producing water-absorbing resin particles for which surface cross-linking treatment is conducted, the surface cross-linking treatment being conducted by spraying a surface cross-linking agent to a water-absorbing resin particle precursor and heating the agent and the precursor, the apparatus includes a treatment container in which the surface cross-linking treatment is conducted, a stirring device including a stirring member disposed in the treatment container, a heating device that heats an inside of the treatment container; and a spray nozzle disposed in the treatment container, the spray nozzle spraying into the treatment container the surface cross-linking agent supplied from a surface cross-linking agent supply source in an exterior of the treatment container through a supply pipe. In a flow path in the spray nozzle spanning from an entrance of the spray nozzle to a spray exit, a point whose opening cross-section is smallest in a flow path through which a fluid passes is the spray exit. A product with further stable physical properties can thereby be acquired.

公开(公告)号：US10730028B2

公开(公告)日：2020-08-04

申请号：US16088653

申请日：2017-02-16

Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.

Inventor： Masato Kotake ,  Tetsuya Takechi ,  Hideo Kazama

IPC: B01J8/10 ,  B01J20/30 ,  B01J8/00 ,  C08J3/24 ,  B01J8/08 ,  B01J20/26

Abstract: An apparatus for producing water-absorbing resin particles for which surface cross-linking treatment is conducted by spraying a surface cross-linking agent to a water-absorbing resin particle precursor and heating the agent and the precursor, the apparatus includes a treatment container in which the surface cross-linking treatment is conducted, a stirring device including a stirring member disposed in the treatment container, a heating device that heats an inside of the treatment container; and a spray nozzle disposed in the treatment container, the spray nozzle spraying into the treatment container the surface cross-linking agent supplied from a surface cross-linking agent supply source in an exterior of the treatment container through a supply pipe. In a flow path in the spray nozzle spanning from an entrance of the spray nozzle to a spray exit, a point whose opening cross-section is smallest in a flow path through which a fluid passes is the spray exit.

公开(公告)号：US20200316549A1

公开(公告)日：2020-10-08

申请号：US16909145

申请日：2020-06-23

Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.

Inventor： Masato Kotake ,  Tetsuya Takechi ,  Hideo Kazama

IPC: B01J8/10 ,  B01J20/30 ,  B01J8/00 ,  C08J3/24 ,  B01J8/08 ,  B01J20/26

Abstract: An apparatus for producing water-absorbing resin particles for which surface cross-linking treatment is conducted, the surface cross-linking treatment being conducted by spraying a surface cross-linking agent to a water-absorbing resin particle precursor and heating the agent and the precursor, the apparatus includes a treatment container in which the surface cross-linking treatment is conducted, a stirring device including a stirring member disposed in the treatment container, a heating device that heats an inside of the treatment container; and a spray nozzle disposed in the treatment container, the spray nozzle spraying into the treatment container the surface cross-linking agent supplied from a surface cross-linking agent supply source in an exterior of the treatment container through a supply pipe. In a flow path in the spray nozzle spanning from an entrance of the spray nozzle to a spray exit, a point whose opening cross-section is smallest in a flow path through which a fluid passes is the spray exit. A product with further stable physical properties can thereby be acquired.