发明授权
- 专利标题: Method for producing granulated sodium percarbonate
- 专利标题(中): 生产粒状过碳酸钠的方法
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申请号: US457435申请日: 1995-06-01
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公开(公告)号: US5560896A公开(公告)日: 1996-10-01
- 发明人: Martin Bewersdorf , Claas-Jurgen Klasen , Petra Look-Herber , Birgit Bertsch-Frank , Thomas Lieser , Klaus Muller
- 申请人: Martin Bewersdorf , Claas-Jurgen Klasen , Petra Look-Herber , Birgit Bertsch-Frank , Thomas Lieser , Klaus Muller
- 申请人地址: DEX Frankfurt am Main
- 专利权人: Degussa Aktiengesellschaft
- 当前专利权人: Degussa Aktiengesellschaft
- 当前专利权人地址: DEX Frankfurt am Main
- 优先权: DEX4329205.4 19930831
- 主分类号: B01D1/20
- IPC分类号: B01D1/20 ; B01J2/04 ; B01J2/16 ; B05B7/06 ; C01B15/10 ; C01B31/24
摘要:
Sodium percarbonate is produced by means of fluidized bed granulation. The process includes spraying an aqueous sodium carbonate solution and a hydrogen peroxide solution onto nuclei in a fluidized bed and evaporating the water. In the process of the invention, it is not necessary to use a phosphorus-containing crystallization inhibitor in order to avoid cloggings and incrustations in and on the nozzle. This is accomplished by spraying the solutions through separate channels in a single ternary atomizer nozzle, to provide external mixing of the solutions with respect to the nozzle.