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1、Multiphase 50 Hz Pump Manufacturer since 1927 F l u i d P u m p S o l u t i o n s G a s www.daf- 多相流 创始于1 9 2 7 年的泵制造商 气体溶解和液体- 气体混合输送的解决方案 高效 节能 简单 有效 Inhalt 2 - EDUR Multiphase Pumps The transport of liquids integrated with various dissolved gases is arguably one of the most outstanding recent inn
2、o- vations in the technology of centrifugal pumps. EDUR has developed these efficient and smart solutions through pre- cision engineering and machining resulting in a multiphase pump that is currently revolutionizing new fields and in appli- cations unheard of only a decade before. EDUR multiphase p
3、umps differ considerably in design and operation from conventional centrifugal pumps. The EDUR multiphase pumps are designed to make operation of the pump with induced-air from the inlet-side without cavitation that standard centrifugal pumps cannot handle. In doing so a thorough mixing and an excel
4、lent gas saturation of the liq- uid occurs. Gas contents up to 30% are normal with stable operating conditions during standard operation of the pump. Further positive characteristics of EDUR Multiphase pumps include low parts wear by slight impurities and steady pump- ing characteristics for changin
5、g points of operation. With increasing gas contents in the liquid the pump capacity and the pressure will decrease as well as the power input. The outstanding efficiency of the EDUR multiphase pumps and the reduced installation complexity amortize the replace- ment of conventional low-efficiency mul
6、tiphase equipment within a short time. Municipal waste water treatment plants utilizing the EDUR Multiphase Pump have seen decreases in annual energy costs in some cases up to 200.000. E D U R 多相流泵 E D U R 公司产生的多相流泵可以输送混合了气体或溶解气 体的液态流质，这是现代离心泵技术的杰出发明和创新。 E D U R 在多相流泵上的有效的开发，获得了多相介质混合输 送灵活的解决方案。多相流泵
7、在当前新领域的开拓和应用 结果，这在十年前是闻所未闻的。 E D U R 多相流泵在设计和运行上和传统的离心泵截然不同。 E D U R 多相流泵设计成在泵进口侧导入空气进行运行，而 不会产生气蚀，这是普通离心泵无可匹及的。这样做， 可以使得气- 液充分混合并使液体中的气体饱和度达到最 佳。在泵的常规运行状态下，液体中的气体含量高达3 0 % 时泵仍可以正常稳定的运行。 E D U R 多相流泵还具有少量杂质进入时耐磨损性好，泵的 运行工况点变化时性能特性曲线稳定等优点。随着气体 含量在液体内的增加，泵的流量和压力以及输入功率也 会随之下降。 E D U R 多相流泵出色的效能和简单便捷的安装
8、，使得它在 短时间内取代了常规的，低效率的多相设备。德国市政 废水处理厂采用E D U R 多相流泵每年能节省能源开支高达 2 0 万欧元。 Contents 3 4 7 10 11 12 18 20 22 23 Dissolved Air Flotation Further Applications Performance Data, Constructional Features Sealings, Materials, Drives Characteristic Curves Dimension Tables Installation and Initial Starting Solut
9、ion of Different Gases in Water EDUR Manufacturing Program 目录 溶气气浮 更多应用 性能参数，结构特性 密封，材料，电机 特性曲线 外形/ 安装尺寸 安装和初始运行 各种气体在水中的饱和溶解度 E D U R 产品规格 4 4 Application Dissolved Air Flotation Dissolved air flotation (DAF) is a reliable and proven process for purification in wastewater systems. DAF is used for t
10、he easy separation of suspended matters in liquids. The DAF System works by saturating the process water with air under high pressure which is then released to normal pressure and piped into the wastewater tank. The micro bubbles generated during pressure release work to attract suspended particles
11、in the liquid and float them to the surface where they are then skimmed away. Typical ideal fields of application include the treatment of oil- water emulsions, fat separations, phosphate precipitations and heavy metal precipitations as well as final sedimentation at bio-treatment plants. Multistage
12、 flotation plants are a solu- tion for the treatment of special waste. Anwendung Druck-Entspannungsflotation 应用 溶气气浮 在污水系统的净化工艺中，D A F 溶气气浮已经被验证是可 靠的。D A F 溶气气浮用于液体中悬浮物颗粒的简单分离。 D A F 气浮系统的工作原理是空气在高压下溶解于回流水， 然后回流水进行释压至正常压力，并进入污水池。压力 释放过程中产生的微气泡黏附在液体中的悬浮颗粒上， 从而将其托浮、上升至液面，然后很被撇除。 这种方法很适合应用于油- 水乳化液、油脂分离
13、，磷酸盐沉 淀物分离，重金属沉淀物的分离以及生化处理工艺中最后 的沉淀物处理。多级气浮设备是解决特殊废水处理的最佳方 案。 5 System EDUR Konventionelles System Conventional System 5 Zulauf Schmutzwasser Inflow Waste-water Luft Air Kompressor Compressor Luft Air Standardpumpe Standard pump Flotat Flotate Feststoffe Solids Ablauf Effluent EDUR Mehrphasenpumpe E
14、DUR multiphase pump LsestreckeSolution Line LsestreckeSolution Line Flotation System with EDUR Multiphase Pump as per VDMA Specification 24430 When using the EDUR multiphase pumps (right) the gas is fed directly into the inflow pipe. This allows the reduction in system components compared to systems
15、 of traditional DAF design (left). The compressor, pressure tank, pumps, cont- rol, and numerous valves can be removed. During pressure generation in the DAF system, EDUR mul- tiphase pumps achieve a thorough homogeneous mixing of liquid and gas. By adding additional downstream solution lines this g
16、as saturation will be further increased. In systems with EDUR multiphase pumps grades of mixing- solubility up to 100% can be achieved. The image below shows an excellent dispersion as result. In order to capture a maximum amount of suspended materials, micro bub- bles with equal distribution have to be generated. Depending upon the waste water and the saturation pressure dis- persions with bubble sizes between 30 and 50 microns can be achieved with EDUR multiphase pumps. Applicati
