盐酸法制备二氧化钛水解技术的研究现状与展望

于耀杰; 宋悦; 董仕顺; 任秀莲; 魏琦峰

doi:10.7513/j.issn.1004-7638.2022.04.005

盐酸法制备二氧化钛水解技术的研究现状与展望

doi: 10.7513/j.issn.1004-7638.2022.04.005

哈尔滨工业大学(威海)海洋科学与技术学院, 山东威海 264200

基金项目: 山东省重点研发计划（2017CXGC1002）。

详细信息

作者简介:
于耀杰（1988—），男，硕士研究生，主要研究方向：分离科学与技术及资源综合利用，E-mail: yuyaojie0114@126.com

通讯作者:
魏琦峰，教授，博士生导师，研究方向：分离科学与技术及资源综合利用，E-mail: weiqifeng163@163.com

中图分类号: TF823
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出版历程
- 收稿日期: 2022-05-08
- 刊出日期: 2022-09-14

Research progress and perspectives of hydrochloric acid hydrolysis technology for titanium dioxide production

College of Marine Science and Technology, Harbin Institute of Technology, Weihai 264200, Shandong, China

摘要

摘要: 盐酸法是继硫酸法、氯化法之后一种新型的钛白粉生产工艺，该工艺具有废物产量少、原料要求低、能够生产金红石型和锐钛型两种产品的特点。水解是盐酸法生产二氧化钛工艺的重要工序之一，不仅影响收率，还能够对产品的粒径分布、形貌、晶体结构等产生重大影响。阐述了包括常压水解、加压水解、微波水解、低温水解、连续水解、喷雾水解在内的六种盐酸法水解技术，以及各自的技术路线和基本原理，分析总结了其优缺点。经过综合比较，认为常压水解和加压水解技术实现工业化的可能性较大；微波水解和连续水解技术比较适合制备纳米锐钛型二氧化钛；而连续水解和喷雾水解技术尚未完善，还有待进一步研究。
- 二氧化钛 /
- 盐酸法 /
- 水解 /
- 偏钛酸 /
- 晶型
Abstract: Hydrochloric acid method is a new type of titanium dioxide production process following sulfuric acid method and chlorination method, which has the characteristics of less waste output, low requirements for raw materials, and can produce rutile and anatase. Hydrolysis is one of the important processes in the production of titanium dioxide by hydrochloric acid method. Hydrolysis can not only affect the yield, but also have a significant impact on the particle size distribution, morphology and crystal structure of the product. This paper introduces six hydrochloric acid hydrolysis technologies including atmospheric pressure hydrolysis, pressurized hydrolysis, microwave hydrolysis, low temperature hydrolysis, continuous hydrolysis and spray hydrolysis, expounds their respective technical routes and basic principles, analyzes and summarizes their advantages and disadvantages. Through the comprehensive comparison of these common hydrolysis technologies, it is considered that atmospheric pressure hydrolysis technology and pressurized hydrolysis technology are more likely to realize industrialization; Microwave hydrolysis technology and continuous hydrolysis technology are more suitable for the preparation of nanosized anatase titanium dioxide; The continuous hydrolysis and spray hydrolysis technologies are, however, not perfect and need to be further studied.
- titanium dioxide /
- hydrochloric acid method /
- hydrolysis /
- metatitanic acid /
- crystal form

HTML全文

图 1 连续水解反应装置示意

1-水蒸气；2-钛酸四乙酯溶液；3-成核反应器；4-老化管；5-熟化装置；6-产物

Figure 1. Schematic diagram of continuous hydrolysis reactor

下载: 全尺寸图片幻灯片

图 2 喷雾水解装置示意

1-排风口；2-塔体；3-雾化器；4-火焰分格栅；5-燃气喷管；6-进风管；7-放料口

Figure 2. Schematic diagram of spray hydrolysis device

下载: 全尺寸图片幻灯片

表 1 盐酸法水解技术比较

Table 1. Comparison of hydrochloric acid hydrolysis techniques

技术路线	优点	缺点
常压水解	技术相对简单，容易实现工业化	存在批次间质量波动，操作较为复杂，生产效率低
加压水解	反应速率快，通用性强，可生产金红石和锐钛产品	存在批次间质量波动，需使用压力容器，存在一定的安全隐患
微波水解	反应速率快，适合生产纳米二氧化钛产品	存在批次间质量波动，需定制专用微波反应设备，投资成本高
低温水解	反应温度低，操作简单，适合生产小批量纳米二氧化钛	存在批次间质量波动，生产效率低
连续水解	生产效率高，质量相对稳定	工艺复杂，需使用定制设备，投资成本高
喷雾水解	生产效率高，工艺流程短，质量相对稳定	需使用定制设备，投资成本高，技术难度较高

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