摘要
摘 要
钛白粉是目前世界上性能最佳的白色颜料，被广泛应用于涂料、塑料、造纸、油墨、橡胶、化纤等工业。由于钛白粉生产需要较大资金的投入，另外还存在着工艺过程复杂、关键技术保密、三废处理困难等特殊性，尽管我国钛资源十分丰富，但钛白工业却相对落后。
本课题主要研究内容是设计4万吨/年硫酸法金红石钛粉厂黑段的设计。包括工艺技术方案的选择、原辅材料、燃料及动力的供应、节能、环境保护等的讨论，并绘制带控制点的工艺流程图，通过选择合理的工艺路线，进行产能的优化，最终达到设计的合理性和可行性。在设计中，以每天得产能为依据，为设备的选型和设计提供了依据。在设备选型阶段，对主要过程设备进行了设计计算。对生产过程中产生的三废进行了计算，并提出处理流程。
通过编写设计说明书，加深对钛白粉黑段的认知，在此基础上绘制带控制点的工艺流程图，并列出主要的设备。
关键词 4万吨每年硫酸法钛白，金红石，工艺设计
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ABSTRACT
ABSTRACT
Titanium pigment is currently the best performance of white paint, and it is widely used in the coatings, plastics, papermaking, printing ink, rubber, chemical fiber and other industries. Due to large amount of capital invested on production of Titanium pigment, in addition, the particularity exists: the technical process is complicated, and the key technology is surreptitious and the three wastes treatment is difficult; though titanium resources are very rich in China, the titanium pigment industry is relatively backward.
The main study content of this issue is to design and research 40,000 tons / year of sulfate process titanium dioxide plant, including the choice of technical skill program, auxiliary materials, supply of fuel and power, energy saving, environmental protection and other discussions. And the technological flow sheet with control point plans is drawn, and the production capacity is optimized through choosing a reasonable route for the optimization of production so as to design reasonably and feasibly. In the design, with a daily capacity basis for the selection and design of the equipment provided a basis. In equipment selection stage, the main process equipment design and calculation. The production process of the waste was calculated, and proposed processes.
Through the preparation of brochures designed to enhance the awareness of titanium white. On the basis of the mapping process with the control point plans .And sets out the main equipment.
Keywords 40,000 tons of titanium dioxide per year sulfuric acid, rutile, process
design
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目录
目 录
摘 要…………………………………………………………………….….Ⅰ ABSTRACT…………………………………………………………………….Ⅱ
1绪论…………………………………………………………………………….….…1
1.1概述………………………………………………………………………….….…1 1.1.1项目概况………………………………………………………………….…1 1.1.2项目建设的目的、意义………………………………………………………1 1.1.3设计的主要成果………………………………………………………………2 1.1.4设计中存在的问题……………………………………………………………2 1．2设计依据、设计原则…………………………………………………………………2 1.2.1设计依据………………………………………………………………….…2 1.2.2设计原则………………………………………………………………….…3 1．3设计范围…………………………………………………………………….….…3 1.3.1钛白装置………………………………………………………………….…3 1.3.2辅助工程………………………………………………………………….…3
2 硫酸法钛白生产黑段工艺设计说明……………………………………………….4
2.1原矿粉碎………………………………………………………………………….6 2.1.1工艺目的……………………………………………………………………6 2.1.2矿粉粒度要求………………………………………………………………6 2.1.3粉碎设备…………………………………………………………………6 2.1.4原矿粉碎工艺流程简述……………………………………………………6 2.1.5原矿粉碎工艺流程框图…………………………………………………6 2.2酸解………………………………………………………………………………7 2.2.1酸解的目的………………………………………………………………7 2.2.2酸解的原理………………………………………………………………7 2.2.3钛铁矿酸解的工艺过程……………………………………………………8 2.2.4酸解工艺流程简述…………………………………………………………9 2.2.5酸解工艺流程框图………………………………………………………10 2.3沉降及热过滤……………………………………………………………………10 2.3.1沉降的目的………………………………………………………………10 2.3.2沉降的基本原理…………………………………………………………11
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目录
2.3.3沉降工艺流程简述………………………………………………………11 2.3.4沉降工艺流程框图………………………………………………………11 2.4控制过滤…………………………………………………………………………12 2.4.1控制过滤的目的…………………………………………………………12 2.4.2控制过滤工艺流程简述…………………………………………………12 2.4.3控制过滤工艺流程框图…………………………………………………12 2.5浓缩………………………………………………………………………………12 2.5.1浓缩的目的……………………………………………………………12 2.5.2浓缩工艺流程简述………………………………………………………13 2.5.3浓缩工艺流程框图………………………………………………………13
3物料及热量衡算……………………………………………………………………14
3.1物料衡算…………………………………………………………………………14 3.1.1高钛渣、钛精矿…………………………………………………………14 3.1.2浓硫酸…………………………………………………………………14 3.1.3沉降……………………………………………………………………15 3.1.4压滤……………………………………………………………………15 3.1.5浓缩……………………………………………………………………15 3.2热量衡算…………………………………………………………………………15 3.2.1钛矿粉碎…………………………………………………………………15 3.2.2酸矿预混合………………………………………………………………15 3.2.3酸解……………………………………………………………………15 3.2.4沉降……………………………………………………………………16 3.2.5浓缩……………………………………………………………………16
4设备选型……………………………………………………………………………18
4.1球磨系统的选择………………………………………………………………18 4.2酸解锅的选择…………………………………………………………………18 4.3沉降池的选择……………………………………………………………………18 4.4浓缩器的选择……………………………………………………………………19 4.5工程主要设备配置一览表………………………………………………………19
5污染治理及排放……………………………………………………………………20
5.1废气的治理及排放………………………………………………………………20 5.1.1钛白粉装置废气………………………………………………………………20 5.1.2无组织排放…………………………………………………………………20 5.2废酸的产生及处理………………………………………………………………20
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目录
5.3废水的治理及排放………………………………………………………………20 5.3.1工业废水……………………………………………………………………20 5.3.2污水处理站废水治理及排放情况……………………………………………21
6项目分析……………………………………………………………………………22
6.1建设项目概况………………………………………………………………….…22 6.1.1建设项目名称、性质和地点…………………………………………………22 6.1.2建设规模、内容………………………………………………………………22 6.1.3工程建设内容及项目组成……………………………………………………22 6.1.4工程建设内容及项目组成……………………………………………………22 6.1.5劳动定员及生产制度…………………………………………………………23
7结论…………………………………………………………………………….….…24 参考文献……………………………………………………………………….….…25 致 谢………………………………………………………………………………….26
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