共查询到19条相似文献,搜索用时 62 毫秒
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介绍了梅钢公司利用余热饱和低压蒸汽进行发电的技改方案,通过蒸汽平衡、现场调研,对热轧加热炉汽化冷却回收的蒸汽考虑发电和并网或不并网运行,实现余能、余热充分利用,节能增效。 相似文献
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针对某钢铁企业转炉及加热炉的蒸汽现状,建设一座3MW余热电站用于有效回收利用转炉及加热炉蒸汽.文中从余热利用方案、主要设备参数、余热利用系统、主厂房布置等方面进行了论述,详细介绍了饱和蒸汽发电技术在该钢铁企业的应用情况.饱和蒸汽发电技术的应用为节能减排、环境保护做出了巨大贡献,同时也为企业创造了可观的经济效益. 相似文献
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According to systematic features, analysis method based on exergy balance is established. Basic indicators in the system, the subsystem, and facilities are put forward in this paper. By using this method to analyze the generation system of megawatt‐scale in one chemical enterprise, it is found that the objective exergy efficiency of the system is 35.67%, and exergy loss of organic Rankine cycle (ORC) is the highest. The thermal efficiency of the total system is 9.61%. For the condenser, the thermal efficiency is 91.18%, and the exergy efficiency is only 23.44%. The objective exergy efficiency of the evaporator is 74.04%. The influence coefficient of exergy loss of condenser is higher than that of pump and expander, but input exergy of the condenser is lower than that of the expander. It is revealed that ORC subsystem is the part which needs to be focused on, and the condenser is the most important component of ORC subsystem which should be optimized firstly. 相似文献
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水泥窑纯低温余热发电有机工质循环技术的应用探讨 总被引:4,自引:0,他引:4
针对目前水泥工艺的余热情况及我国水泥窑余热发电的技术现状,提出了采用以有机烷类和有机热载体为循环工质的纯低温发电系统进行纯低温余热回收的方案,以达到节能降耗的目的。 相似文献
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Numerical study on bubble behavior in magnetic nanofluid used for waste heat recovery power generation concept
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Electrical energy can be generated by the bubble motion inside the magnetic nanofluid under the influence of an external magnetic field. The relative movement of the magnetic particles dispersed in the magnetic fluid is induced through the movement of the bubbles rising by buoyancy force. This disturbs the external magnetic field associated with the generator coil, and electrical energy can be generated. The bubble movement in this complex physical environment was studied through 2D numerical analysis. Commercial magnetic fluids EFH1 and EFH3, manufactured by Ferrotec, were selected as the working fluid for the investigation. A level set method was used to analyze the 2‐phase flow of bubbles motion in the magnetic fluid. The effect of magnetic particle concentration on the behavior of bubbles and the change of bubble flow patterns through interaction between bubbles were observed by analysis. In addition, the influence of the magnetic force caused by the external magnetic field on the behavior of the bubble was also investigated. The following results can be obtained through the analysis of this study. The high concentration of magnetic particles increases the viscosity and attenuates the rising velocity and the lateral oscillation of the bubbles. The interaction of the 2 bubbles depends on the initial relative distance. Merging occurs only between 2 bubbles within a certain initial distance, which maximizes disturbance of the surrounding magnetic fluid. The magnetic force exerted by the permanent magnets externally applied is relatively small in comparison with gravity. Therefore, the effect on the rise behavior of the bubble is not significant. In consideration of the overall external force and flow conditions, the pattern of the bubble flow that maximizes the efficiency in the present electric energy generation concept was found. 相似文献
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综述火电厂低温余热利用技术的特点及应用现状,并对各种技术进行了对比分析,其中集中式吸收式热泵供热技术在当前应用最广泛,是最具发展前景的技术。苇湖梁电厂低温余热利用项目是集中式吸收式热泵125MW水冷机组技术在国内的首次工程应用,项目具有显著的节能效果,可实现年节约标煤41688t,节水65.88万t。 相似文献
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介绍了向心式汽轮机的特点及大型铜冶炼厂余热利用系统,提出了饱和蒸汽发电系统方案,并将其与传统轴流式背压汽轮机系统方案进行经济技术比校. 相似文献