Invention Grant
- Patent Title: Apparatus for producing water-absorbing resin particles
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Application No.: US16088653Application Date: 2017-02-16
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Publication No.: US10730028B2Publication Date: 2020-08-04
- Inventor: Masato Kotake , Tetsuya Takechi , Hideo Kazama
- Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
- Applicant Address: JP Kako-gun
- Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
- Current Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
- Current Assignee Address: JP Kako-gun
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@643b8719
- International Application: PCT/JP2017/005665 WO 20170216
- International Announcement: WO2017/169246 WO 20171005
- Main IPC: B01J8/10
- 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.
Public/Granted literature
- US20190105628A1 APPARATUS FOR PRODUCING WATER-ABSORBING RESIN PARTICLES Public/Granted day:2019-04-11
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