首頁 > 資料下載 > 三菱日立電力系統(tǒng)美國煤改氣Mitsubishi Hitachi Power Systems America Coal to Gas Conversions

三菱日立電力系統(tǒng)美國煤改氣Mitsubishi Hitachi Power Systems America Coal to Gas Conversions

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更新時間：2021-09-09
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關(guān)機 ?最低資本成本選擇 ?消除所有潛在的發(fā)電源和潛在的產(chǎn)能收入，并且必須承擔停電費用（替換生成成本是可能的）面臨環(huán)境挑戰(zhàn)的單位 ?安裝新的聯(lián)合循環(huán) ●使用燃燒廉價氣體的高效發(fā)電源來減少污染 ·非常高的資本成本~$1250/kw++ ·重新啟動聯(lián)合循環(huán) ?與聯(lián)合循環(huán)具有相同的好處，但如果可能，可重新使用蒸汽渦輪機 ·高資本成本~$1000/kw++ ·安裝首都空氣質(zhì)量控制系統(tǒng) ?安裝最新的水質(zhì)安全系統(tǒng)允許機組以最大的燃料靈活性保持運行 ·高資本成本：FF~$40/kw，.FGD~$125/kw，SCR~$160/kw，增加設(shè)備維護人力 ●如果燃料的硫和氮含量足夠低，則安裝添加劑（DSI/ACI/SNCR） ●在維持煤炭能力的同時降低前期成本：ACI~$5/kw、SNCR~$14/kw、DSI~$5/kw ●機組沒有燃料靈活性，現(xiàn)在鍋爐、空氣加熱器和管道工程影響（腐蝕）的運行成本較高，氨水泄漏、材料脫落問題等。 ?轉(zhuǎn)化為天然氣 ●一種低成本的選擇（26-65美元/千瓦），在使煤失活的同時消除大部分汞、微粒和硫的排放維護設(shè)備的設(shè)備和相關(guān)人力 ?天然氣供應(yīng)管線必須具有成本效益，效率略有下降 ·成為雙燃料燃料（含添加劑的氣體和煤） ?機組可以立即切換到成本最低的燃料選項，并且可以滿足未來的規(guī)定 ·預(yù)付兩個獨立系統(tǒng)的費用

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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