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海水淡化

高效低成本热法海水淡化关键技术与应用示范

项目背景：中国是一个干旱缺水严重的国家，是全球 13 个人均资源最贫乏的国家之一。而山东省属于联合国确定的严重缺水地区，人均淡水资源不足全国人均的 1/6，仅为世界人均占有量的 1/25，山东省作为海洋大省，海岸线超过 3000 公里，位居全国第三位，发展海水淡化是解决淡水资源短缺的重要途经。本项目已列入 2019 年山东省重点研发计划（重大科技创新工程）。

海水淡化

目前商业化应用海水淡化技术主要有两类：一类是膜法，一类是蒸馏法。膜法海水淡化技术主要为反渗透法(Reverse Osmosis, RO)，市场占有率占近60%。膜法淡化技术优点是灵活度较高，系统建设方便，初投资相对较低。但该方案也存在明显的缺点：1）系统的核心部件-高压泵和反渗透膜基本全部依赖进口，中美的“贸易战”进一步推高了其价格。2）反渗透膜比较“娇贵”，系统需要频繁进行清洗和换膜，造成系统的维护成本较高。3）膜法海水淡化的综合成本在7元/吨以上（二级制水，杂质量≤300mg/L），甚至更高，造成很难推广使用，填补国内低温蒸效法的空白。
蒸馏法海水淡化是目前市场占有率第二大的海水淡化技术，占全球市场份额约1/3。该方法利用中高温热源和负压蒸发器实现海水低温蒸发来制取淡水。尽管该技术具有淡化水质量高、占地少、维护周期长、维护成本低等优点，但现有技术依赖高品质稳定热源驱动（一般为高温蒸汽或热水），淡水综合单价一般不低于8元/吨，高制水成本导致很难推广使用。

海水淡化

在国内同行业相比的优势

海水淡化项目由金宝搏官网188be 主要负责实施，集团长期致力于废热回收、换热和水处理技术，同时在项目施工方面有丰富的经验累积，目前已为华润、国家电投、华电、华能、中石化、中国恩菲、中国建材国际、中煤科工、中铁四局、中铁十三局、中核五建、中电四建、中机四建、解放军总后勤部、中国长城铝业、上海宝钢等多个国家重点建设项目提供了优质产品。产品行销国内23个省自治区和4个直辖市，并已出口到伊朗、巴基斯坦、孟加拉、蒙古等4个国家。
项目组中山东大学与国家自然资源部天津海水淡化与综合利用研究所提供技术支持与保障。山东大学在冷-热-水-电联产、工程热物理、设备防腐、能源管理优化控制等相关领域具有一流的科研环境和实验基础，配备各种大型的科学实验仪器及设备，如粒子测速仪PIV、红外成像仪、色谱仪等，可为本项目提供有力的科研支撑。海水淡化所是国内最早开展蒸馏法海水淡化成套技术研发的单位，具备坚实的海水淡化工程技术基础，从“十五”到“十三五”，完成了多项国家科技攻关任务，在新材料装备开发、过程仿真分析、系统工艺集成等方面积累了丰富的研究经验，建成了蒸馏海水淡化工艺实验平台、关键部件和装备性能测试平台，以及涵盖流体分析、结构分析、工艺/装备/电控设计的软件平台，为海水淡化项目实施提供有力保障。
与国内热法海水淡化技术同行业相比，国辰海水淡化产品在传统热压缩低温多效蒸馏技术上进行了技术升级和改进，可采用汽轮机抽气作为驱动热源，亦可采用余热热源驱动（发电厂汽轮机阀杆漏气、灰斗伴热余热、疏水扩容器热水和蒸汽，化工流程冷却环节等）。与传统热法海水淡化相比，初投资降低15%以上，制水效率提升20%以上，制水成本降低约50%。相比于反渗透技术（RO），本公司方案更适用于热-电-水联产，实现能源梯级利用，空间利用率更高，水质更优（产品水质电导率低于20μs/cm）。

海水淡化

国辰海水淡化系统具有如下技术特点：

①根据用户的场地条件和用水需求，装置采用一体化结构设计，设备紧凑，占地少。设备主体全部采用现场工厂化制造、安装和调试的方案，可有效提高工程施工进度，保障施工质量，大幅降低初投资成本。
②根据用户余热热源情况制定余热驱动海水淡化装置，提高热源利用率，进一步降低制水成本。
③本项目自调节TVC和抽真空技术可实现热源、海水变工况下稳定运行，保证系统热源利用率和制水效率。
④系统集成了多效蒸馏、多级闪蒸和蒸汽热压缩的技术优势，可提高蒸汽热能利用率，提高装置造水比。
⑤通过优化海水喷淋密度、效间传热温差、盐水浓缩倍率等关键工艺参数，同时采用抗结垢材料传热管、高效阻垢剂等材料，可兼顾能效与耐久的双重性能，保障装置长期稳定、可靠运行。
本项目技术可充分利用工业余热驱动，采用高效抗结垢耐腐蚀换热器与热泵式余热回收装置，实现余热回收驱动低温热源驱动MED海水淡化系统，即实现能源的进一步梯级利用，又解决工业用水难、用水贵的问题，为企业带来新的利益增长点，大幅缩短设备的投资回报周期。项目的实施不仅有良好的经济效益，还能带来一定的环保效益，推动相关低温余热回收、海水淡化技术的推广和应用。
“高效低成本热法海水淡化关键技术应用与示范”项目获批2019年山东省重点研发计划（重大科技创新工程）。实验室充分利用高校在理论研究方面的优势资源，与公司资金和技术经验相结合，极大的推动了公司的发展。

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机电：0531-58532888

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地址：山东省济南市长清五峰工业园区001号

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