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1、第35卷第3期2014年6月電力與能源353摻燒劣質(zhì)煤對(duì)供電煤耗影響的分析顏雪琴(上海電力股份有限公司吳涇熱電廠(chǎng)，上海200241)摘要：燃煤機(jī)組摻燒劣質(zhì)煤，除了增加維護(hù)和維修成本外，還會(huì)影響鍋爐效率、蒸汽參數(shù)、輔機(jī)電耗等指標(biāo)。為了定量分析摻燒劣質(zhì)煤對(duì)機(jī)組供電煤耗的影響，以12號(hào)機(jī)組不摻燒(全神木煤)工況為基準(zhǔn)，340g／kWh達(dá)標(biāo)煤耗為標(biāo)桿，分別比對(duì)240、180、120Mw三種工況下?lián)綗淤|(zhì)煤的供電煤耗。試驗(yàn)結(jié)果為：240Mw電負(fù)荷，摻燒劣質(zhì)煤后供電煤耗上升2．869g／kWh；180MW電負(fù)荷，摻燒劣質(zhì)煤后供電煤耗上升3．987g／kWh；120Mw電負(fù)荷，摻燒劣質(zhì)煤后供電煤
2、耗上升3．769g／kWh。為此建議：要控制好摻燒大混煤的煤量，可適當(dāng)摻燒些褐煤等煤種來(lái)對(duì)沖；要盡量運(yùn)行高位磨煤機(jī)，通過(guò)燃燒器擺角和風(fēng)煙擋板進(jìn)行調(diào)整，抬高再熱器出口溫度；要綜合考慮摻燒大混煤的比例。關(guān)鍵詞：摻燒劣質(zhì)煤；供電煤耗率；定量分析中圖分類(lèi)號(hào)：TK227．1文獻(xiàn)標(biāo)志碼：A文章編號(hào)：2095—1256(2014)03—0353—03AnalysisofMixedBurningInferiorCoalforPowerSupplyCoalConsumptionRateInfluenceYanXueqin(ShanghaiElectricPowerCo．，Ltd．，WujingThe
3、rmalPowerPlant，Shanghai200241，China)Abstract：Mixedburninginferiorcoalincoal—firedunitswillnotonlyincreasethecostofmaintenanceandre—pair，butalsoaffecttheindicatorsforefficiencyoftheboiler，steamparametersandauxiliarypowerconsump—tion．Toquantitativeanalysisofimpactonthepowersupplycoalconsumptiono
4、fworkingunitwhenmixedburninginferiorcoal，chooseworkingconditionofNo．12workingunit，whichdidntburninginferiorcoal(containsfullofShenmuCoa1)and340g／kWhforcoalconsumptionasabenchmark，tOrespectivelycomparedwiththepowersupplycoalconsumptionofmixedburninginferiorcoalunder240MW。180MW，120MWworkingcondi
5、tions．Thetestresultis：whenmixedburninginferiorcoal，powersupplycoalconsumptionrose2．869g／kWhfor240MWelectricalload．Powersupplycoalconsumptionrose3．987g／kWhfor180MWelectricalload．Powersupplycoalconsumptionrose3．769g／kWhfor120MWelectricalload．Thesuggestionsare：Controlthequantityofmixedburninginfe
6、riorcoa1．AppropriatetomixedburninglignitetOhedge，whichcanspecificallyreducetheimpactofriskaftermixedburninginferiorcoa1．TrytOrunhighlevelcoalpulveriz—er，andthroughadjustofburnerangularandspecificbaffletOraisetheoutlettemperatureofre-heater；Corn—prehensiveconsideroftheproportionofmixedburningin
7、feriorcoa1．Keywords：Mixedburninginferiorcoal；Coalconsumptionrateofpowersupply；Quantitativeanalysis燃煤電廠(chǎng)運(yùn)行中的主要成本之一是燃料。為質(zhì)煤對(duì)供電煤耗影響的試驗(yàn)。了降低煤炭成本，大多燃煤電廠(chǎng)都在摻燒劣質(zhì)煤，1試驗(yàn)方案吳涇熱電廠(chǎng)也不例外。摻燒大混煤的比例在2o～3O。由于劣質(zhì)煤價(jià)低，煤炭成本有所降1)機(jī)組簡(jiǎn)況12號(hào)燃煤機(jī)組的鍋爐系上海低，但是過(guò)熱器、再熱器、制粉系統(tǒng)等設(shè)備受
