BENTLY NEVADA 330180-50-05已有蒸汽輪機(jī)發(fā)電廠改造為燃?xì)庹羝?lián)合循環(huán),原本應(yīng)淘汰的5萬(wàn)賈蒸汽輪機(jī)組不僅保留7來(lái),而且成為更先進(jìn)的聯(lián)合循環(huán)電站的個(gè)部分。例如,用1臺(tái)2.5萬(wàn)kW燃?xì)廨啓C(jī)與2臺(tái)5萬(wàn)kW發(fā)電機(jī)組組成聯(lián)合循環(huán)發(fā)電機(jī)組,燃?xì)廨啓C(jī)的排氣加熱鍋爐給水,以減少汽輪機(jī)用于給水加熱的抽汽,從而增大蒸汽輪機(jī)的輸出功率。同時(shí),采用循環(huán)流化床鍋爐取代原有煤粉爐,可大大改善環(huán)保性能。BENTLY NEVADA 330180-50-05聯(lián)合循環(huán)改造后系統(tǒng)的總輸出以蒸汽輪機(jī)為主,燃料仍然是以煤為主,新增加的燃?xì)廨啓C(jī)燃用油或氣,即雙燃料動(dòng)力系統(tǒng)。系統(tǒng)改造后全廠發(fā)電效率可由32.5提到38.煤耗可降低左右。顯然,煤耗如此大幅度下降,只靠汽輪機(jī)本身的改造或者鍋爐改造是不可能達(dá)到的。大氣污染物30,和1減少7080,用水量減少30.從西部地區(qū)的能源結(jié)構(gòu)雙燃料基地和環(huán)境污染的十分嚴(yán)重的特點(diǎn)看,西部地區(qū)是適合采用聯(lián)合循環(huán)系統(tǒng)更新改造技術(shù)。
BENTLY NEVADA 330180-50-05 總之,在系統(tǒng)高度上實(shí)現(xiàn)效低污的能源動(dòng)力系統(tǒng),達(dá)到節(jié)能1520大幅度減少大氣污染,能夠充分利用現(xiàn)有廠房設(shè)備,改造投資較少18到0,大大延長(zhǎng)現(xiàn)有電站有十分優(yōu)越的經(jīng)濟(jì)性。
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