A dry preparation method and preparation device of sodium perborate
By using dry process and ultraviolet photocatalytic technology in the preparation of sodium perborate, the problems of complex wet process, high wastewater and low reactive oxygen content of the product are solved, and a more efficient and environmentally friendly preparation process and better product performance are achieved.
CN119349513BActive Publication Date: 2025-03-28浙江洁华新材料股份有限公司
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Patent Information
- Application Number
- CN202411918895.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2044-12-25
AI Technical Summary
Technical Problem
The existing sodium perborate preparation technology adopts a wet process, with complex processes, many wastewater, small product particles, low reactive oxygen content and poor stability.
Method used
By using the dry preparation method, by installing an ultraviolet beam emitter in the reactor, ultraviolet photocatalyzed reaction of hydrogen peroxide with borax pentahydrate and sodium hydroxide to generate sodium perborate, and it is directly dried without centrifugation.
Benefits of technology
The process flow is simplified, the wastewater generation is reduced, the size of sodium perborate particles and the reactive oxygen content is improved, the storage stability of the product is enhanced, and the production efficiency is improved.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a dry preparation method and a preparation device of sodium perborate, and belongs to the field of dry preparation of sodium perborate; the preparation method is as follows: S1: pretreatment with hydrogen peroxide, adding a stabilizer to the hydrogen peroxide solution; S2: preparation of a reactant precursor, putting solid borax pentahydrate and solid sodium hydroxide into a horizontal reactor according to a certain molar ratio, stirring; adding titanium dioxide and turning on an ultraviolet beam emitter; then adding a weakly alkaline pH buffer regulator to obtain a reactant precursor; S3: spraying the hydrogen peroxide solution with a stabilizer added in S1 into the reactant precursor of step S2, stirring, and increasing the power of the ultraviolet beam emitter at the beginning of spraying; drying after the reaction to obtain a sodium perborate solid. The method does not require solid-liquid separation, omits the process link of centrifugation, thereby saving a large amount of production time and improving the overall production efficiency by more than 30%.
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