液力透平回收能量影响因素分析及措施

从液力透平性能、回收装置配置和运行工况调节3个方面探讨了运用新的水力设计理论来设计高性能的叶轮以及优化透平结构的方法,使液力透平与相关设备性能、流程工况参数相匹配,并保证回收装置在高效区工作,以达到提高能量回收率的目的.     

液力透平在环氧乙烷/乙二醇装置中的应用

环氧乙烷/乙二醇(EOEG)装置高压侧的富碳酸盐液和富循环水去往低压侧的流程均设计了液力透平以回收能量,结合实际分析了该液力透平的原理,结构以及操作方法,实践证明液力透平能量回收效率高,运行平稳,为装置节约了大量电力能源。     

蜡油加氢热高分液能量回收透平运行分析

主要对蜡油加氢裂化装置热高分液能量回收透平使用情况进行了分析说明,对透平的基本原理和该液力透平的基本参数做简单的介绍,对投用过程中出现的问题提出相应的解决措施。通过现场对液力透平、离合器、电机和反应进料泵的水平与垂直方向振动进行实测,对相应频谱和趋势进行分析。同时对液力透平的节能效果进行粗略计算。     

能量回收液力透平泵在净化脱碳系统的应用

从液力透平泵的工作原理出发,简述了液力透平泵在净化脱碳系统的能量回收工艺过程,并分析对比了不同型号的液力透平泵在该系统应用后的节电效果,得出结论:液力透平泵的正确选型及运行工况的合理调节是煤化工厂脱碳系统能量回收的关键。     

液力透平在加氢裂化装置的应用

主要介绍锦西石化150万t/a蜡油加氢裂化装置液力透平的成功投用,成功回收从热高分至热低分的压力能。结果表明:投用液力透平后可以达到节能降耗的目的,每年可以节约电费308万元。     

新型液力透平在合成氨变脱系统中的应用

介绍了液力透平的能量配置方式,分析了河南心连心化肥有限公司合成氨变脱系统液力透平能量回收效率低的问题,介绍了优化改造措施:贫液泵降扬程提流量、老式涡轮机更换为透平泵一体化直连新型液力透平,对新型液力透平开停车步骤及注意事项进行了说明。优化改造后,节电效果显著。     

NHD脱碳富液能量回收技术应用总结

简要介绍液力透平泵的基本原理及用液力透平泵回收NHD脱碳系统富液的能量这一项目的工艺方案、工艺流程和取得的效果,达到了回收余能、降低电耗的目的。     

丁烯水合工艺使用液力透平的可行性研究

介绍了丁烯水合工艺和液力透平技术,提出将液力透平技术用于丁烯水合工艺的技术方案。根据上述工艺技术特点,设计了工艺流程简图。通过计算与分析,结果表明:将液力透平用于丁烯水合工艺,与电机驱动相比,节能效果明显,约1.4年可以回收投资成本。液力透平技术用于丁烯水合工艺可行性强,应尽快得到应用。     

浅析水力透平(1107-JHT)改进的经济性

水力透平是液力能量回收装置,由于原设备在设计上有缺陷,设备故障率较高,能量回收效率较低,通过改进后,提升了设备效率,平衡了脱碳半贫液循环系统的载荷,有效的降低了设备故障率。     

液力透平的应用及节能分析

对东明润邦120万吨/年高硫重油综合利用项目混合油加氢精制装置的设计中采用的液力透平装置在高压加氢装置中的应用及节能性进行了分析研究,分析结果表明,液力透平投用生产后,在九个月内回可收全部的投资成本,对装置降低能耗、减少生产运行成本有很好的促进作用。     

利用水轮机作动力带动冷却塔的风机

为了降低能耗,对机力通风冷却塔引入水轮机作动力代替电机。分析水轮机作动力带动冷却塔风机的可行性和水轮机的选择与控制,分析节能效果及尚存在需要注意解决的问题。     

Hydraulic turbine energy recovery - R.O. System

In reverse osmosis desalination plants large flow rates of concentrated brine are discharged at high pressure from the membrane modules. Currently this pressure energy is wasted. This paper reviews the impact of soaring energy costs on the technical alternative of hydraulic turbine energy recovery. The capital costs, operating costs, and economics in electrical energy are evaluated for both sea-water and brackish water systems. Schemes of hydraulic turbine coupled with electric generator, tied to the electric power supply are considered for various plant sizes from 1 to 10 mgd. The analysis, in parametric form, presents the interrelationships between the cost of money, cost of electrical energy, and recovery factors for the different plant sizes and for sea-water and brackish water systems. The results will serve as a guide to determine when such a power recovery system should be seriously considered and evaluated in greater details for specific applications.     

水轮机用耐磨蚀磨损涂层技术的研究

水轮机的耐磨蚀、耐磨损涂层对延长水轮机的寿命有着重要的作用。总结了现阶段水轮机用保护涂层的技术,着重介绍了改性环氧树脂(EP)非金属涂层的制备及在水电站中的应用,同时对非金属涂层的发展趋势作了展望。     

Waste heat powered reverse osmosis plants

The purchased power required for operation of reverse osmosis systems can be greatly reduced or sometimes eliminated by reclaiming waste heat from diesel engines, gas turbines, flare gases, etc. This can be accomplished by using a Biphase turbine to convert low level waste heat to shaft horsepower.The system can be designed to use waste heat from existing installations or to reduce the size of the generating equipment in new supplies.The Biphase conservation turbine is driven by a two phase stream generated by flashing a superheated liquid through a nozzle to the turbine. The turbine can be directly coupled to a pump shaft, to an electrical generator or to a combination of the two. Performance of the turbine is discussed. The waste heat recovery turbine and a hydraulic turbine to recover energy from the high pressure concentrated brine can be combined into one system.This paper describes the design of a seawater reverse osmosis system using waste heat from an existing diesel generating unit. The SeaRO system is designed to produce 750 cmd of 400 ppm water at an energy consumption of approximately 2.5 KWH of purchased power per cubic meter.A discussion of available desalination capacity at various quantities and temperature levels of the waste heat source is presented. A comparison of water costs obtained using this system and a conventional electrical drive is presented.     

煤化工一体化节能技改的工程实践

为解决煤气鼓风机、循环水泵等设计余量大、能耗高的问题,开展了节能研究和改造。将煤气鼓风机液力耦合器调速系统改为高压变频调速系统,将循环水泵改为变流恒压泵,节能量可达30%以上;将循环水冷却塔风机改为水轮机驱动,可实现系统能量的二次利用。一体化节能改造项目实施后,每年可节电3 843.69×104kWh,折12 799.49 t标煤。     

Operating experience of the Dhekelia seawater desalination plant using an innovative energy recovery system

Dhekelia Desalination Plant in Cyprus has been in operation for 7 years. It includes eight 5,000 m³/d seawaterreverse osmosis trains operating with Mediterranean seawater with a TDS content of 41,800 ppm, with water temperature ranging from 17°C to 32°C. The energy recovery system originally installed at the plant is the Francis turbine, which, at the time, was considered one of the most efficient and economical devices on the market. Since then, however, market forces to reduce operational costs, by cutting down energy consumption, led to the advent of new energy recovery systems. Today several systems are in operation which reduce the RO energy consumption. Apart from the versions of the Francis turbine and Pelton wheel they include the hydraulic turbocharger, work exchanger and pressure exchanger, all harnessing the pressure energy of the brine. In our effort to be competitive for the years to come we decided to convert our existing energy recovery system from Francis turbines to the pressure exchanger. This paper outlines how it was decided to go ahead with the pressure exchangers, and gives comparisons with other energy recovery methods, and describes our operating experience with the pressure exchangers.     

加氢裂化装置的能耗分析及节能措施

影响加氢裂化装置能耗的主要因素是燃料气、电、蒸汽等消耗,本文依据过程系统用能分析的三环节模型进行加氢裂化装置的能耗分析,阐明在能量转换和传输、能量利用、能量回收环节,通过采取提高加热炉热效率、液力透平、HydroCOM气量调节控制系统、夹点技术等措施,有效降低加氢裂化装置的瓦斯、电、蒸汽等主要项目的消耗,达到降低装置能耗的目的。同时,文章指出了在建的云南石化210万吨/年蜡油加氢裂化装置的一些节能措施,为其他新建加氢裂化装置提供参考。     

液体橡胶改性环氧树脂固化及应用研究

用聚丁二烯液体橡胶与环氧树脂制得聚丁二烯液体橡胶/环氧树脂(ETPB)胶粘剂。本文研究ETPB固化剂加入量对粘接和剥离强度的影响。由于该胶粘剂的粘接和剥离性能优异,所以可用于水轮机的耐磨涂层。本文对该胶粘剂在水轮机上的应用性能进行了讨论。结果表明,在ETPB中加入固化剂量为20%时,材料的粘接和剥离性能最好,并且与水轮机用不锈钢性能相比相差不大,可以作为廉价的水轮机叶片保护涂层。