首页 > 资料下载 > 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 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

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  • 更新时间：2021-09-09
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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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