A titanium dioxide synthesis reactor with controllable temperature and reaction field uniformity

By employing multiple independent reaction units, a two-stage serpentine airflow distribution, and a precise rapid cooling design in the chloride process titanium dioxide reactor, the problems of uneven reaction field and scaling were solved, achieving efficient and uniform titanium dioxide synthesis to meet the needs of high-end applications.

CN122399709APending Publication Date: 2026-07-17NORTH CHINA INSTITUTE OF SCIENCE & TECHNOLOGY (NATIONAL SAFETY TRAINING CENTER OF COAL MINES)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTH CHINA INSTITUTE OF SCIENCE & TECHNOLOGY (NATIONAL SAFETY TRAINING CENTER OF COAL MINES)
Filing Date
2026-05-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing chloride process titanium dioxide reactors suffer from problems such as uneven reaction field, large temperature distribution differences, wide particle size distribution, large average particle size, and easy scaling on the inner wall, resulting in low production efficiency, high cost, and difficulty in meeting the needs of high-end applications.

Method used

By employing a synergistic design of multiple independent reaction units, two-stage serpentine airflow distribution, precise rapid cooling, and wall-mounted anti-scaling, the radial temperature difference of the reaction field is controlled within ±15℃ through the construction of multiple independent airflow concentrated reaction sections, a two-stage nested airflow distribution structure, independent precise rapid cooling, and wall-mounted airflow to prevent scaling. This reduces the powder particle size distribution index (PDI) to 1.1-1.3 and extends the scalding cycle to over 90 days.

Benefits of technology

It significantly improves the uniformity of the reaction field, enhances the uniformity of powder particle size distribution and average particle size, extends the stable operation cycle of the reactor, reduces production costs, meets the quality and production efficiency requirements of high-end titanium dioxide, and is suitable for large-scale continuous industrial production.

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Abstract

本公开公开了一种温度及反应场均匀可控的钛白粉合成反应器，包括高温富氧气流通道、气流集中反应段、含钛化合物分配组件、贴壁气流分配组件、急冷组件和汇流出口管。其中，高温富氧气流通道包括等直径入口管、渐扩管、圆形端板；气流集中反应段包括入口分散导流管、中段集中反应腔等；含钛化合物分配组件包括含钛化合物流入管、直筒导流腔等；贴壁气流分配组件包括贴壁气流流入管、外侧气流导流壁等；急冷组件包括急冷水入口、换热腔、急冷水出口。本公开通过各组件协同，实现温度及反应场均匀分布，解决现有反应器反应不均、粉体粒径不均问题，合成的钛白粉平均粒径小且分布均匀，还可避免反应器结疤，保障设备稳定运行。
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Citation Information

Patent Citations

  • Chloride process titanium dioxide reactor

    CN101279763A