生物質鍋爐中(zhong)主(zhu)要(yao)燃(ran)燒(shao)生(sheng)物(wu)質(zhi)燃(ran)料(liao),將(jiang)其(qi)轉(zhuan)換(huan)為(wei)熱(re)能(neng),生(sheng)物(wu)質(zhi)鍋(guo)爐(lu)的(de)運(yun)行(xing)使(shi)用(yong)會(hui)消(xiao)耗(hao)大(da)量(liang)的(de)生(sheng)物(wu)質(zhi)材(cai)料(liao),而(er)且(qie),生(sheng)物(wu)質(zhi)鍋(guo)爐(lu)經(jing)常(chang)出(chu)現(xian)燃(ran)料(liao)燃(ran)燒(shao)不(bu)充(chong)分(fen)、燃ran料liao燃ran燒shao過guo剩sheng等deng現xian象xiang,尤you其qi是shi在zai排pai煙yan溫wen度du過guo高gao的de情qing況kuang下xia,將jiang會hui增zeng加jia生sheng物wu質zhi燃ran料liao的de損sun失shi,以yi及ji會hui影ying響xiang到dao鍋guo爐lu的de使shi用yong壽shou命ming等deng,不bu利li於yu鍋guo爐lu的de可ke持chi續xu運yun行xing,尤you其qi是shi在zai節jie能neng減jian排pai政zheng策ce實shi施shi下xia,很hen多duo生sheng物wu質zhi鍋guo爐lu的de燃ran燒shao已yi經jing嚴yan重zhong超chao標biao,因yin此ci,必bi須xu對dui其qi進jin行xing處chu理li。
鍋爐排煙溫度過高的主要原因
1、二次風壓控製不合理
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2、生物質燃料的水分過高
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3、生物質燃料的質量問題
生物質鍋爐的使用,對生物質燃料的質量要求非常高,因此,生物質鍋爐使用過程中應嚴格注意生物質的質量。
4、鍋爐設計存在缺陷
生(sheng)物(wu)質(zhi)鍋(guo)爐(lu)以(yi)燃(ran)燒(shao)生(sheng)物(wu)質(zhi)燃(ran)料(liao)為(wei)主(zhu),通(tong)過(guo)燃(ran)料(liao)的(de)燃(ran)燒(shao)轉(zhuan)換(huan)為(wei)熱(re)能(neng),而(er)生(sheng)物(wu)質(zhi)在(zai)燃(ran)燒(shao)的(de)過(guo)程(cheng)中(zhong)會(hui)產(chan)生(sheng)大(da)量(liang)的(de)結(jie)垢(gou)物(wu),因(yin)此(ci),生(sheng)物(wu)質(zhi)鍋(guo)爐(lu)的(de)設(she)計(ji)需(xu)要(yao)考(kao)慮(lv)到(dao)結(jie)垢(gou)物(wu)的(de)清(qing)理(li)。而(er)從(cong)當(dang)前(qian)大(da)多(duo)生(sheng)物(wu)質(zhi)鍋(guo)爐(lu)的(de)運(yun)行(xing)情(qing)況(kuang)分(fen)析(xi),由(you)於(yu)生(sheng)物(wu)質(zhi)鍋(guo)爐(lu)設(she)計(ji)不(bu)夠(gou)合(he)理(li),尤(you)其(qi)是(shi)對(dui)結(jie)垢(gou)物(wu)的(de)清(qing)理(li)極(ji)為(wei)不(bu)便(bian),從(cong)而(er)導(dao)致(zhi)鍋(guo)爐(lu)受(shou)熱(re)麵(mian)內(nei)壁(bi)出(chu)現(xian)結(jie)垢(gou)的(de)現(xian)象(xiang),影(ying)響(xiang)鍋(guo)爐(lu)運(yun)行(xing)的(de)效(xiao)率(lv)。
鍋爐排煙溫度過高的主要處理措施
通(tong)過(guo)以(yi)上(shang)的(de)分(fen)析(xi)了(le)解(jie)到(dao),當(dang)前(qian)很(hen)多(duo)生(sheng)物(wu)質(zhi)鍋(guo)爐(lu)排(pai)煙(yan)出(chu)現(xian)溫(wen)度(du)過(guo)高(gao)的(de)現(xian)象(xiang),而(er)且(qie),引(yin)起(qi)這(zhe)類(lei)問(wen)題(ti)的(de)原(yuan)因(yin)比(bi)較(jiao)多(duo),應(ying)對(dui)其(qi)采(cai)取(qu)有(you)效(xiao)的(de)處(chu)理(li)措(cuo)施(shi),達(da)到(dao)降(jiang)低(di)鍋(guo)爐(lu)排(pai)煙(yan)溫(wen)度(du)的(de)目(mu)的(de)。
1、合理調整二次風壓
二er次ci風feng壓ya調tiao整zheng的de是shi否fou合he理li,將jiang直zhi接jie影ying響xiang到dao鍋guo爐lu的de運yun行xing效xiao率lv,而er在zai不bu合he理li的de情qing況kuang下xia還hai經jing常chang會hui造zao成cheng鍋guo爐lu排pai煙yan溫wen度du過guo高gao的de現xian象xiang,長chang期qi如ru此ci會hui影ying響xiang到dao鍋guo爐lu的de使shi用yong壽shou命ming,因yin此ci,在zai鍋guo爐lu運yun行xing的de過guo程cheng中zhong,應ying合he理li調tiao整zheng二er次ci風feng壓ya。
2、合理摻配燃料
實shi際ji上shang,生sheng物wu質zhi燃ran料liao在zai送song進jin爐lu膛tang之zhi前qian,需xu要yao摻chan配pei其qi他ta的de燃ran料liao,主zhu要yao防fang止zhi燃ran料liao的de水shui分fen過guo高gao而er影ying響xiang到dao鍋guo爐lu的de運yun行xing效xiao率lv,同tong時shi也ye能neng夠gou保bao證zheng生sheng物wu質zhi燃ran料liao平ping均jun熱re值zhi在zai2000大卡左右,並且,在燃料穩定、床chuang溫wen正zheng常chang的de情qing況kuang下xia,排pai煙yan溫wen度du也ye會hui明ming顯xian降jiang低di。合he理li摻chan配pei燃ran料liao主zhu要yao確que定ding摻chan配pei料liao的de類lei型xing,以yi及ji摻chan配pei料liao的de配pei比bi等deng,如ru高gao熱re值zhi燃ran料liao可ke以yi與yu低di熱re量liang的de燃ran料liao摻chan配pei;高水分的燃料可以與低水分的燃料摻配;gaohuifaderanliaokeyiyudihuifaderanliaochanpei,zheyangcainengyouxiaoditigaosongrulutangneiranliaoranshaodexiaolv,tongshiyeyouxiaoxiaochuzaochengguolupaiyanwenduguogaodecailiaoyinsu,jiangdiguolupaiyandewendu,gengyouliyuguoludekechixuyunxing。
3、嚴格把好生物質材料的質量關
鍋爐燃燒質量不合格,是當前引發鍋爐排煙溫度過高的主要原因,因此,要降低鍋爐排煙溫度,應嚴格把好生物質燃料的質量關。
4、合理改善鍋爐設計
綜(zong)上(shang)所(suo)述(shu),在(zai)生(sheng)物(wu)質(zhi)鍋(guo)爐(lu)運(yun)行(xing)的(de)過(guo)程(cheng)中(zhong),經(jing)常(chang)會(hui)出(chu)現(xian)鍋(guo)爐(lu)排(pai)煙(yan)溫(wen)度(du)過(guo)高(gao)的(de)問(wen)題(ti),不(bu)僅(jin)會(hui)影(ying)響(xiang)到(dao)鍋(guo)爐(lu)的(de)運(yun)行(xing)效(xiao)率(lv),甚(shen)至(zhi)會(hui)影(ying)響(xiang)到(dao)鍋(guo)爐(lu)的(de)使(shi)用(yong)壽(shou)命(ming)。經(jing)大(da)量(liang)的(de)實(shi)踐(jian)調(tiao)查(zha)分(fen)析(xi)發(fa)現(xian),當(dang)前(qian)造(zao)成(cheng)鍋(guo)爐(lu)排(pai)煙(yan)溫(wen)度(du)過(guo)高(gao)的(de)原(yuan)因(yin)有(you)很(hen)多(duo),大(da)多(duo)都(dou)因(yin)爐(lu)膛(tang)火(huo)焰(yan)過(guo)高(gao)、過guo剩sheng的de空kong氣qi係xi數shu較jiao大da以yi及ji鍋guo爐lu受shou熱re麵mian內nei壁bi出chu現xian結jie垢gou的de現xian象xiang等deng引yin發fa的de,因yin此ci,在zai降jiang低di鍋guo爐lu排pai煙yan溫wen度du時shi,必bi須xu要yao考kao慮lv這zhe些xie因yin素su,同tong時shi還hai要yao注zhu意yi鍋guo爐lu設she計ji的de改gai善shan以yi及ji把ba好hao燃ran料liao的de質zhi量liang關guan。
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