碳捕集系統(tǒng)與燃煤發(fā)電機(jī)組耦合特性
發(fā)布時(shí)間：2018-12-12 20:38
【摘要】：針對(duì)基于MEA碳捕集系統(tǒng)對(duì)燃煤發(fā)電機(jī)組經(jīng)濟(jì)性影響的問(wèn)題,以某600MW超臨界燃煤機(jī)組為研究對(duì)象,計(jì)算了吸收劑的再生能耗,提出了碳捕集系統(tǒng)3種解吸熱源方案:方案1是以機(jī)組第4段抽汽作為再沸器的熱源;方案2是以第4段抽汽及第5段抽汽共同作為再沸器的熱源;方案3是以機(jī)組新增加的抽汽段作為再沸器的熱源。建立了耦合系統(tǒng)經(jīng)濟(jì)性評(píng)價(jià)指標(biāo),分析了3種方案機(jī)組的經(jīng)濟(jì)性。結(jié)果表明:3種方案均具有可行性,基于壓力匹配原則的耦合方案3優(yōu)于方案1與方案2,工況一定時(shí),方案3的熱效率分別比方案1和方案2高出2.04%,1.84%。方案3的熱效率比不進(jìn)行碳捕集機(jī)組熱效率降低了4.76%,發(fā)電成本增加了0.154元/(kW·h)。
[Abstract]:Aiming at the influence of MEA carbon capture system on the economy of coal-fired generating units, the regeneration energy consumption of absorbent was calculated by taking a 600MW supercritical coal-fired unit as the research object. Three schemes of desorption heat source for carbon capture system are put forward. Scheme 1 is to take the fourth stage of the unit as the heat source of the reboiler; The second scheme is to take the fourth stage extraction and the fifth stage extraction as the heat source of the reboiler, and the third scheme is to take the newly added extraction section of the unit as the heat source of the reboiler. The economic evaluation index of coupling system is established, and the economy of three schemes is analyzed. The results show that the three schemes are feasible, and the coupling scheme 3 based on the principle of pressure matching is superior to scheme 1 and scheme 2, and the thermal efficiency of scheme 3 is 2.04% higher than that of scheme 1 and scheme 2 when the working conditions are fixed. The thermal efficiency of scheme 3 is 4.76% lower than that of unit without carbon capture, and the cost of generating electricity is increased by 0.154 yuan / (kW h).
【作者單位】： 電站設(shè)備狀態(tài)監(jiān)測(cè)與控制教育部重點(diǎn)實(shí)驗(yàn)室(華北電力大學(xué));
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51076044,51306059) 中央高�；究蒲袠I(yè)務(wù)專(zhuān)項(xiàng)資金資助項(xiàng)目(13XS38)
【分類(lèi)號(hào)】：TM611
本文編號(hào)：2375213
[Abstract]:Aiming at the influence of MEA carbon capture system on the economy of coal-fired generating units, the regeneration energy consumption of absorbent was calculated by taking a 600MW supercritical coal-fired unit as the research object. Three schemes of desorption heat source for carbon capture system are put forward. Scheme 1 is to take the fourth stage of the unit as the heat source of the reboiler; The second scheme is to take the fourth stage extraction and the fifth stage extraction as the heat source of the reboiler, and the third scheme is to take the newly added extraction section of the unit as the heat source of the reboiler. The economic evaluation index of coupling system is established, and the economy of three schemes is analyzed. The results show that the three schemes are feasible, and the coupling scheme 3 based on the principle of pressure matching is superior to scheme 1 and scheme 2, and the thermal efficiency of scheme 3 is 2.04% higher than that of scheme 1 and scheme 2 when the working conditions are fixed. The thermal efficiency of scheme 3 is 4.76% lower than that of unit without carbon capture, and the cost of generating electricity is increased by 0.154 yuan / (kW h).
【作者單位】： 電站設(shè)備狀態(tài)監(jiān)測(cè)與控制教育部重點(diǎn)實(shí)驗(yàn)室(華北電力大學(xué));
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51076044,51306059) 中央高�；究蒲袠I(yè)務(wù)專(zhuān)項(xiàng)資金資助項(xiàng)目(13XS38)
【分類(lèi)號(hào)】：TM611
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