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The renovation project by the Shanghai three engineering technology co., LTD to undertake this design. From October 2012, I worked as an intern in this company, during the period of internship I was involved in the part of the design work. Actively response to the university-enterprise joint advocacy of graduation design, I graduated with a mentor agreed, and through the permission of the company: select part of the project as a graduation design topic, using existing conditions as a condition of my graduation design task.
This system, need to reform the content of the original device is:
1) Add a chlorate decomposition system;
2) To modify existing ammonia removal system of brine;
3) Increase the nitrate removal system of a membrane;
4) To increase a set of weak brine concentration system;
5) Increase the corresponding utility pipelines and to modify part of the equipment.
This design mainly introduces the chlorate decomposition of nitrate removal system of membrane system and sodium sulfate removal process.
KeyWords：sodium sulfate removal；CIM；Chlorate decomposition；memebrane method；Sodium sulphate
目录
1概述 1
1.1课题背景 1
1.1.1 课题来源 1
1.1.2 课题范围 1
1.2 项目建设的必要性 2
1.3项目建设的可能性 3
1.3.1 工艺技术的依托 3
1.3.2公用工程的依托 3
1.3.3 装置用地的依托 5
1.3.4辅助生产装置的依托 5
1.3.5装置用地的依托 5
1.3.6 辅助生产装置的依托 5
1.4方案选择 5
1.4.1推荐方案 5
1.4.2未推荐方案 7
1.5结论 8
1.6项目实施建议 8
1.6.1建设周期设想 8
1.6.2各阶段建设进度规划 8
1.6.3组织机构与人力资源配置 9
2 工艺流程设计 10
2.1 生产规模与产品方案 10
2.1.1 生产规模 10
2.1.2产品方案 10
2.2工艺技术选择 10
2.2.1除硝工艺技术 10
2.2.2富硝盐水制芒硝和元明粉工艺 12
2.3国内膜法除硝工艺比较 12
2.3.1预处理单元 13
2.3.2 膜过滤单元 13
2.3.3 结论 15
2.4 工艺流程简述 15
2.4.1淡盐水氯酸盐分解系统 15
2.4.2 CIM膜法除硝系统 16
3 物料衡算 18
3.1 氯酸盐分解单元物料衡算 18
3.2 预处理单元物料衡算 18
3.3膜分离单元物料衡算 19
3.3.1 膜过滤模块 19
3.3.2 精制盐水产量的确定 21
3.3.3原料卤水流量的确定 21
3.3.4 膜分离单元各物流的流量 22
4 热量衡算 24
4.1 淡盐水加热器 24
4.2 淡盐水冷却器 25
5 主要设备的选型和计算 27
5.1淡盐水加热器E01041的计算 27
5.2其它主要设备的选型 32
5.2.1工艺设备选择原则 32
5.2.2工艺设备一览表 33
5.3自动化控制系统 34
5.3.1设计选用的主要标准、规范 34
5.3.2 概述 35
5.3.3仪表选型 35