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三菱日立电力系统美国煤改气Mitsubishi Hitachi Power Systems America Coal to Gas Conversions

三菱日立电力系统美国煤改气Mitsubishi Hitachi Power Systems America Coal to Gas Conversions

资料来源: 安大略省政府
文档格式: PDF文档
资料语言: 简体中文/外语
发布日期: 09-09
更新日期: 09-09
积分说明: 1点等于0.5元人民币
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  • 本文件为PDF文档.三菱日立电力系统美国煤改气Mitsubishi Hitachi Power Systems America Coal to Gas Conversions
  • 本标准关键词:
  • 关机 •最低资本成本选择 •消除所有潜在的发电源和潜在的产能收入,并且必须承担停电费用 (替换生成成本是可能的) 面临环境挑战的单位 •安装新的联合循环 ●使用燃烧廉价气体的高效发电源来减少污染 ·非常高的资本成本~$1250/kw++ ·重新启动联合循环 •与联合循环具有相同的好处,但如果可能,可重新使用蒸汽涡轮机 ·高资本成本~$1000/kw++ ·安装首都空气质量控制系统 •安装最新的水质安全系统允许机组以最大的燃料灵活性保持运行 ·高资本成本:FF~$40/kw,.FGD~$125/kw,SCR~$160/kw,增加设备维护 人力 ●如果燃料的硫和氮含量足够低,则安装添加剂(DSI/ACI/SNCR) ●在维持煤炭能力的同时降低前期成本:ACI~$5/kw、SNCR~$14/kw、DSI~$5/kw ●机组没有燃料灵活性,现在锅炉、空气加热器和管道工程影响(腐蚀)的运行成本较高, 氨水泄漏、材料脱落问题等。 •转化为天然气 ●一种低成本的选择(26-65美元/千瓦),在使煤失活的同时消除大部分汞、微粒和硫的排放 维护设备的设备和相关人力 •天然气供应管线必须具有成本效益,效率略有下降 ·成为双燃料燃料(含添加剂的气体和煤) •机组可以立即切换到成本最低的燃料选项,并且可以满足未来的规定 ·预付两个独立系统的费用

    Shut Down the Unit • Lowest Capital Cost Option • Eliminate all potential source of generation and potential capacity revenues and must incur de-commissioning cost (Replacement generation cost a possibility) Units Faced with Environmental Challenges • Install New Combined Cycle • Minimize emmisions with an efficient generation source burning cheap gas • Very high capital cost ~ $1,250/kw++ • Re-power to Combined Cycle • Same benefits as Combined Cycle but re-using the Steam Turbine if possible • High Capital cost ~ $1,000/kw++ • Install Capital Air Quality Control Systems • Installing the latest AQCS allows unit to remain operational with most fuel flexibility • High Capital Costs: FF ~ $40/kw, DryFGD ~ $125/kw, SCR ~ $160/kw, with increased equipment to maintain and manpower • Install Additives (DSI/ACI/ SNCR) if Fuel has low enough Sulfur and Nitrogen to comply • Low Upfront cost while maintaining coal capability: ACI ~ $5/kw, SNCR ~ $14/kw, DSI ~ $5/kw • Unit has no fuel flexibility & now has Higher operational cost with Boiler, Air Heater and Ductwork Impacts (Corrosion, Ammonia slip, material drop-out concerns, etc.) • Convert to Natural Gas • A Low cost option ($26 ~ $65/kw) that eliminates most all Hg, Particulate and Sulfur emissions while deactivating coal equipment and associated manpower to maintain it • Gas Supply line has to be available to be cost effective and efficiency goes down slightly • Become Dual Fuel Fired (Gas and Coal with Additives) • Unit can switch to lowest cost fuel option instantaneously, and can meet future regulations • Paying for two separate systems upfront

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