信息摘要:
重慶燃燒器廠家分享燃油燃燒器燃料的可燃濃度及生碳性,關于燃燒器價格,選型,技術等問題歡迎來電咨詢燃燒器廠家
可(ke)(ke)(ke)燃(ran)物(wu)(如燃(ran)油蒸氣)與空氣混合,只(zhi)能在(zai)一定濃(nong)度范(fan)(fan)圍內(nei)才(cai)能進行燃(ran)燒(shao),超(chao)過這(zhe)(zhe)個(ge)濃(nong)度(太稀或太濃(nong)丿就(jiu)燃(ran)不(bu)起(qi)來了(le)。在(zai)這(zhe)(zhe)個(ge)濃(nong)度范(fan)(fan)圍內(nei),火焰一旦引發,就(jiu)可(ke)(ke)(ke)以(yi)(yi)從點火源(yuan)擴展(zhan)出去,只(zhi)要濃(nong)度合適,可(ke)(ke)(ke)以(yi)(yi)無限(xian)地(di)傳播下去。通常(chang)定義一個(ge)富燃(ran)極(ji)限(xian)和(he)一個(ge)貧燃(ran)極(ji)限(xian)(亦叫富油、貧油極(ji)限(xian))。確切地(di)說(shuo),這(zhe)(zhe)兩個(ge)極(ji)限(xian)應該(gai)叫不(bu)可(ke)(ke)(ke)燃(ran)邊(bian)(bian)界而(er)不(bu)是(shi)可(ke)(ke)(ke)燃(ran)邊(bian)(bian)界。因為(wei)超(chao)過這(zhe)(zhe)兩個(ge)邊(bian)(bian)界,一定不(bu)可(ke)(ke)(ke)燃(ran),但在(zai)這(zhe)(zhe)范(fan)(fan)圍內(nei)不(bu)一定可(ke)(ke)(ke)燃(ran)。貧燃(ran)極(ji)限(xian)與閃點是(shi)相關聯的。煤油類(lei)燃(ran)料在(zai)常(chang)溫下其(qi)不(bu)可(ke)(ke)(ke)燃(ran)邊(bian)(bian)界大致為(wei)油氣比(質量(liang))0.035和(he)0.28。
燃(ran)(ran)(ran)(ran)(ran)料的生(sheng)碳(tan)(tan)(tan)性(xing)(xing)代表在燃(ran)(ran)(ran)(ran)(ran)燒(shao)室(shi)中燃(ran)(ran)(ran)(ran)(ran)燒(shao)時生(sheng)成煙粒(li)子(zi)的傾向。生(sheng)碳(tan)(tan)(tan)性(xing)(xing)與(yu)燃(ran)(ran)(ran)(ran)(ran)料的性(xing)(xing)質有密切關系,如相對密度(du)(du)、溜(liu)程、黏度(du)(du)、芳香(xiang)烴含(han)量(liang)(liang)、碳(tan)(tan)(tan)氫比(氫含(han)量(liang)(liang))等。燃(ran)(ran)(ran)(ran)(ran)料的生(sheng)碳(tan)(tan)(tan)性(xing)(xing)是燃(ran)(ran)(ran)(ran)(ran)料性(xing)(xing)質與(yu)組成影響燃(ran)(ran)(ran)(ran)(ran)燒(shao)性(xing)(xing)能和(he)(he)燃(ran)(ran)(ran)(ran)(ran)燒(shao)室(shi)壽命的最明顯的例子(zi)。生(sheng)碳(tan)(tan)(tan)性(xing)(xing)高使(shi)排氣冒(mao)煙多(duo),燃(ran)(ran)(ran)(ran)(ran)燒(shao)區煙粒(li)子(zi)濃度(du)(du)高,引(yin)起火(huo)焰(yan)輻射黑度(du)(du)高,輻射傳熱高,室(shi)壁溫(wen)度(du)(du)高,引(yin)起火(huo)焰(yan)筒變(bian)形和(he)(he)裂紋,減少(shao)火(huo)焰(yan)筒壽命;生(sheng)碳(tan)(tan)(tan)性(xing)(xing)低(di)(di)容易引(yin)起室(shi)壁積(ji)炭(tan)和(he)(he)噴嘴積(ji)炭(tan),后者會影響到燃(ran)(ran)(ran)(ran)(ran)油的霧化(hua)質量(liang)(liang),造(zao)成燃(ran)(ran)(ran)(ran)(ran)燒(shao)效率(lv)很低(di)(di),出口(kou)溫(wen)度(du)(du)分(fen)布質量(liang)(liang)降低(di)(di),甚至燃(ran)(ran)(ran)(ran)(ran)燒(shao)不(bu)穩(wen)定。
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