邯钢CCPP发电技术的选择与应用

对邯钢合理选择燃烧低热值高炉煤气的燃气-蒸汽联合循环发电技术(CCPP)进行了评价,并简要介绍了邯钢引进该项技术的开发与应用。     

碳捕集电厂不同运行方式的电碳特性分析

碳捕集电厂具有成为未来重要电源建设选项的巨大可能性。在深入考察碳捕集电厂的技术原理、工作流程与能量流关系的基础上,深入研究了碳捕集系统内部各个功能环节的协调关系以及灵活运行的机理,从本质上定义并分析了碳捕集电厂的各类典型运行方式,包括基准运行、烟气分流、富液分流、溶液存储以及综合灵活运行方式。针对每一类典型的运行方式,深入分析了碳捕集电厂所对应的电碳特性。最后,以一台典型碳捕集电厂为实证对象构建算例,验证了所得出的研究结论。     

Exergo-economic study of a dual-pressure HRSG in gas/steam combined cycle plants

ABSTRACT

Combined power plants are among the most attractive options to optimally utilise conventional fuel energy with respect to energy conversion and the environment. In the present study, a dual-pressure heat recovery steam generator (HRSG) used in a gas/steam combined cycle power plant is investigated. This paper presents exergy and economic analysis of a dual-pressure HRSG. The parameters used for the investigation of the exergo-economic study are pinch point, fuel price, cost of exergy losses, gas turbine inlet temperature and cycle pressure ratio. A parametric study shows that the considered parameters have a huge impact on the total annual cost per unit exergy of steam produced in the HRSG. It is seen that best exergo-economic conditions are obtained at the pinch point value of 10?K to get the total annual cost per unit exergy of steam produced to be the minimum.     

莱钢CCPP全站式控制系统DCIS的规划与设计

从系统和全厂的角度,介绍了莱钢首座CCPP的全站式基础自动化网络的规划、设计和应用。该系统涉及到PROFIBUS、CAN、MODBUS等多种现场协议,网络复杂。该网络具有开放性、高可靠性和可操作性等多个特点。     

变频启动技术在燃气蒸汽联合循环发电控制系统中的应用

介绍了武汉钢铁集团公司的燃气-蒸汽联合循环发电站（CCPP）的特点和变频启动技术在这个项目中应用。重点介绍了CCPP启动变频器整体结构、组成及几种控制功能。     

西门子SGT5-4000F型联合循环机组排气温度协调控制分析

以西门子SGT5-4000F型联合循环机组为例,就对机组启停及运行具有重要影响的排气温度控制进行了分析,说明了排气温度控制的作用、控制原理以及影响排气温度控制的各种因素,为相关的事件分析和优化工作提供了基础。     

Control of corrosive water in advanced water treatment plant by manipulating calcium carbonate precipitation potential

The corrosion of metal pipes in water distribution networks is a complex electrochemical and physicochemical phenomenon between a metal surface and corrosive water. The level of corrosion in water distribution systems was controlled by manipulating the calcium carbonate precipitation potential (CCPP) concentration, and the corrosive water quality was controlled in two steps within the advanced water treatment plant (AWTP) constructed at the Institute of Water Quality Research (IWQR), Busan Metropolitan City, Korea. The 1 ^st control step was located before a coagulation process included on a rapid mixer, and the 2 ^nd control step was located after a biological activated carbon (BAC) process. The capacity of the AWTP in IWQR was 80 m³/day. The CCPP concentration was controlled from the calcium hardness, alkalinity, and pH by adding calcium hydroxide (Ca(OH)₂), sodium carbonate (Na₂CO₃), and carbon dioxide (CO₂) in the above two steps. A CCPP control system was installed and operated according to the developed algorithm to maintain a CCPP range of 0–4 mg/L. The CCPP range was reasonably controlled to induce the formation of a CaCO₃ film on the surface of the simulated water distribution system (SWDS). From the result of the corrosive water control, the CCPP formed greater than 0.0 mg/L. The crystalloid structure of the scale produced by CCPP control in the inner surface of pipe was zinc carbonate hydroxide hydrate (Zn₄CO₃(OH)₆·H₂O).     

燃气—蒸汽联合循环(ccpp)发电在首钢迁钢公司中的应用

首钢迁钢150 MW燃气-蒸汽联合循环发电系统利用低热值的高炉煤气进行发电,通过掺入少量焦炉煤气,解决低热值高炉煤气燃烧不稳定的问题。每年为国家节省标准煤36.75万t,其发电能耗为0.292 kg标准煤/kW.h,效率达到45.5%。     

电站系统发展优化配置模型及联合循环可行性的探讨

目前，全社会乃至全人类可持续发展的意识日益增强，环境保护要求越来越高，电力系统的发展已不可能再把经济效益作为唯一的追求目标，能源利用，环境保护也将成为必不可少的主导因素，作者提出了电站系统发展优化配置模型，并结合燃气－蒸汽联合循环电站优势分析，通过实例加以定量分析比较，验证了其经济，能源，环境综合效益的优越性，阐明了发展联合循环技术的可行性及广阔的前景，图6表3参7