船用反渗透海水淡化装置能量回收技术应用研究
发布时间：2018-10-13 08:18
【摘要】：随着现代船舶行业不断的向远洋化和大型化的方向发展,船舶的反渗透海水淡水技术在近30年间得到了迅速发展。而反渗透海水淡化技术的能耗问题一直是制约其发展的主要因素,能量回收技术是有效解决该问题的最佳方法。在反渗透海水淡化工艺中加入能量回收装置,可将反渗透膜组件排出的高压浓海水中的压力能传递给原料海水以降低产水能耗。本文采用适用于船舶工作环境的正位移式余压能量回收装置,分以下几个方面进行研究:装置的结构设计、装置材料的耐腐蚀性分析和密封设计以及能量回收装置性能测试。首先对余压能量回收装置进行结构分析,将传统的正位移式余压能量回收装置进行小型化设计,提出了一种小体积、低能耗的余压能量回收原理。该装置的主要结构包括缸筒、先导阀块和换向阀块。缸筒负责高压浓海水的余压回收工作,而先导阀块和换向阀块负责装置的机械控制工作。然后对装置的结构进行了详细设计,主要包括缸筒、端盖以及集成阀块的设计,保证了该装置结构上的可行性。最后针对能量回收装置适用环境的特殊性,选择耐腐蚀性能极强的双相不锈钢作为装置的材料;并为能量回收装置设计合理的密封系统,保证装置具有良好的密封性。根据余压能量回收装置试验平台的工艺流程,分别对高压泵以及供水泵进行选型。然后完成了试验平台的搭建和监控界面的设计,并采用流量、压力传感器和PLC进行数据采集。通过对能量回收装置进行性能测试,结果表明:能量回收装置能顺利完成海水的增压和泄压工作,保证了能量回收工作的稳定运行,且流量及压力波动较小。同时对能量回收装置的有效能量转换效率进行了实验验证,保证了该装置有效能量转换效率不低于90%的国家标准要求。
[Abstract]:With the development of ocean water and large scale in modern ship industry, reverse osmosis (RO) seawater freshwater technology has been developed rapidly in recent 30 years. The energy consumption of reverse osmosis seawater desalination technology has been the main factor restricting its development. Energy recovery technology is the best way to solve this problem. Adding energy recovery device to reverse osmosis seawater desalination process, the pressure from high-pressure concentrated seawater discharged by reverse osmosis membrane module can be transferred to raw seawater to reduce energy consumption of water production. In this paper, the positive displacement residual pressure energy recovery device suitable for ship working environment is used to study the following aspects: the structure design of the device, the corrosion resistance analysis and sealing design of the equipment material, and the performance test of the energy recovery device. Firstly, the structure of the residual pressure energy recovery device is analyzed, and the traditional positive displacement residual pressure energy recovery device is designed for miniaturization, and a small volume and low energy consumption residual pressure energy recovery principle is proposed. The main structure of the device includes cylinder, pilot valve block and reversing valve block. The cylinder is responsible for the recovery of the residual pressure of high pressure sea water, and the pilot valve block and the reversing valve block are responsible for the mechanical control of the device. Then the structure of the device is designed in detail, including the cylinder, the end cover and the integrated valve block design, which ensures the feasibility of the structure of the device. Finally, according to the particularity of the suitable environment of the energy recovery device, the dual-phase stainless steel with strong corrosion resistance is selected as the material of the device, and a reasonable sealing system is designed for the energy recovery device to ensure the device has good sealing performance. According to the technological process of the test platform of the residual pressure energy recovery device, the high pressure pump and the water supply pump were selected respectively. Then the design of the test platform and the monitoring interface is completed, and the flow, pressure sensor and PLC are used to collect the data. Through the performance test of the energy recovery device, the results show that the energy recovery device can successfully complete the pressurization and pressure relief of seawater, and ensure the steady operation of the energy recovery work, and the flow rate and pressure fluctuation are relatively small. At the same time, the effective energy conversion efficiency of the energy recovery device is verified by experiments, which ensures that the effective energy conversion efficiency of the device is not less than 90% of the national standard.
【学位授予单位】：河北科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P747.5
[Abstract]:With the development of ocean water and large scale in modern ship industry, reverse osmosis (RO) seawater freshwater technology has been developed rapidly in recent 30 years. The energy consumption of reverse osmosis seawater desalination technology has been the main factor restricting its development. Energy recovery technology is the best way to solve this problem. Adding energy recovery device to reverse osmosis seawater desalination process, the pressure from high-pressure concentrated seawater discharged by reverse osmosis membrane module can be transferred to raw seawater to reduce energy consumption of water production. In this paper, the positive displacement residual pressure energy recovery device suitable for ship working environment is used to study the following aspects: the structure design of the device, the corrosion resistance analysis and sealing design of the equipment material, and the performance test of the energy recovery device. Firstly, the structure of the residual pressure energy recovery device is analyzed, and the traditional positive displacement residual pressure energy recovery device is designed for miniaturization, and a small volume and low energy consumption residual pressure energy recovery principle is proposed. The main structure of the device includes cylinder, pilot valve block and reversing valve block. The cylinder is responsible for the recovery of the residual pressure of high pressure sea water, and the pilot valve block and the reversing valve block are responsible for the mechanical control of the device. Then the structure of the device is designed in detail, including the cylinder, the end cover and the integrated valve block design, which ensures the feasibility of the structure of the device. Finally, according to the particularity of the suitable environment of the energy recovery device, the dual-phase stainless steel with strong corrosion resistance is selected as the material of the device, and a reasonable sealing system is designed for the energy recovery device to ensure the device has good sealing performance. According to the technological process of the test platform of the residual pressure energy recovery device, the high pressure pump and the water supply pump were selected respectively. Then the design of the test platform and the monitoring interface is completed, and the flow, pressure sensor and PLC are used to collect the data. Through the performance test of the energy recovery device, the results show that the energy recovery device can successfully complete the pressurization and pressure relief of seawater, and ensure the steady operation of the energy recovery work, and the flow rate and pressure fluctuation are relatively small. At the same time, the effective energy conversion efficiency of the energy recovery device is verified by experiments, which ensures that the effective energy conversion efficiency of the device is not less than 90% of the national standard.
【学位授予单位】：河北科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P747.5
【参考文献】
相关期刊论文 前10条
1 薛树旗;孙鑫;刘永强;祝成耀;秦宏展;;余压能量回收技术在船用反渗透海水淡化工艺中的应用研究[J];船舶工程;2016年01期
2 陈e，
本文编号：2267913
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