洁净煤技术
潔淨煤技術
길정매기술
CLEAN COAL TECHNOLOGY
2015年
2期
85-88
,共4页
气力输送%密相%稀相%负压%煤粉
氣力輸送%密相%稀相%負壓%煤粉
기력수송%밀상%희상%부압%매분
pneumatic conveying%dense phase%dilute phase%negative pressure%pulverized coal
针对工业煤粉输送技术效率低、不安全等问题，介绍了稀相正压输送、密相正压输送和负压输送3种气力输送工艺的原理和使用现状，研究了密相输送工艺的原理和目前主流的栓流式密相输送技术。分析了稀相正压输送、密相正压输送和负压输送工艺各自的技术特点，并在投资、能耗、环保等方面进行对比。结果表明负压输送输送距离较短，稀相正压输送能量损失大、易发热，而密相正压输送固气比高、能耗低、管道和物料磨损小、噪声低、输送过程不易发热，更适合煤粉输送。
針對工業煤粉輸送技術效率低、不安全等問題，介紹瞭稀相正壓輸送、密相正壓輸送和負壓輸送3種氣力輸送工藝的原理和使用現狀，研究瞭密相輸送工藝的原理和目前主流的栓流式密相輸送技術。分析瞭稀相正壓輸送、密相正壓輸送和負壓輸送工藝各自的技術特點，併在投資、能耗、環保等方麵進行對比。結果錶明負壓輸送輸送距離較短，稀相正壓輸送能量損失大、易髮熱，而密相正壓輸送固氣比高、能耗低、管道和物料磨損小、譟聲低、輸送過程不易髮熱，更適閤煤粉輸送。
침대공업매분수송기술효솔저、불안전등문제，개소료희상정압수송、밀상정압수송화부압수송3충기력수송공예적원리화사용현상，연구료밀상수송공예적원리화목전주류적전류식밀상수송기술。분석료희상정압수송、밀상정압수송화부압수송공예각자적기술특점，병재투자、능모、배보등방면진행대비。결과표명부압수송수송거리교단，희상정압수송능량손실대、역발열，이밀상정압수송고기비고、능모저、관도화물료마손소、조성저、수송과정불역발열，경괄합매분수송。
In order to improve efficiency and security of conventional industrial pulverized coal conveying technologies,the working princi-ple and application state of dilute phase pneumatic positive pressure conveying( Method 1),negative pressure conveying( Method 2)and dense phase pneumatic conveying(Method 3)were introduced. The technical features,investment,energy consumption and environmental performance of above three methods were compared. The mechanism of dense phase pneumatic conveying and the mainstream plug flow dense phase conveying technologies were introduced. The results showed that,Method 3 had the shortest conveying distance,Method 1 had the largest energy loss,Method 2 had the highest solid-to-gas ratio,the lowest energy consumption,material abrasion,noise and frictional heating occurrence probability which was suitable for pulverized coal conveying.
