本文選題：細(xì)顆粒 + 重力卸料�。� 參考：《化工進(jìn)展》2017年11期

【摘要】：對細(xì)顆粒在料倉內(nèi)的重力卸料特性進(jìn)行了實(shí)驗(yàn)研究,分別考察了顆粒粒徑和料倉構(gòu)型對卸料流率的影響,采用高速攝像儀對料倉出口處顆粒的卸料形態(tài)進(jìn)行捕捉,并分析其周期性。結(jié)果表明,隨著顆粒粒徑的增大,顆粒卸料流率受逆向壓力梯度和"空環(huán)效應(yīng)"兩種因素共同影響,先增大后基本保持恒定。另外,錐形和平底料倉中細(xì)顆粒的卸料形態(tài),均隨粒徑增大由不穩(wěn)定的間歇卸料向穩(wěn)定的連續(xù)卸料過渡。在間歇卸料形態(tài)下,由于間歇卸料周期較長,錐形料倉的卸料流率要小于平底料倉;在連續(xù)卸料形態(tài)下,受料倉錐角影響,錐形料倉的卸料流率要大于平底料倉。最后,通過修正逆向壓力梯度項(xiàng),分別建立了適用于錐形和平底料倉的細(xì)顆粒重力卸料流率預(yù)測模型,卸料流率的預(yù)測值和實(shí)驗(yàn)值吻合很好。
[Abstract]:The gravimetric unloading characteristics of fine particles in the silo were experimentally studied. The effects of particle size and silo configuration on discharge flow rate were investigated, and the unloading morphology of particles at the outlet of the silo was captured by a high-speed camera. And its periodicity is analyzed. The results show that with the increase of particle size, the discharge rate of the particles is affected by the reverse pressure gradient and the "void ring effect", which increases at first and then remains constant. In addition, the unloading morphology of fine particles in both conical and flat bottom silo is changed from unstable intermittent unloading to stable continuous unloading with the increase of particle size. The discharge rate of the tapered silo is smaller than that of the silo under the condition of intermittent discharge, and the discharge rate of the taper silo is larger than that of the silo under the influence of the cone angle of the silo under the condition of continuous discharge. Finally, by modifying the reverse pressure gradient term, the prediction models of fine gravimetric discharge rate for conical and flat-bottomed bunkers are established, respectively. The predicted discharge flow rate is in good agreement with the experimental data.
【作者單位】： 華東理工大學(xué)化學(xué)工程聯(lián)合國家重點(diǎn)實(shí)驗(yàn)室;華東理工大學(xué)煤氣化與能源化工教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：中央高�；究蒲袠I(yè)務(wù)費(fèi)探索研究基金(222201514017) 國家自然科學(xué)基金青年科學(xué)基金(21706073)項(xiàng)目
【分類號】：TQ021

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 ;細(xì)顆�；厥盏膸追N方法的技術(shù)經(jīng)濟(jì)比較[J];化工裝備技術(shù);1992年05期

2 馬培德;;細(xì)顆粒流化床萘氧化制苯酐的工業(yè)生產(chǎn)[J];石油化工;1983年02期

3 姚江偉;細(xì)顆粒下流式電容儀標(biāo)定裝置[J];石油化工設(shè)備;1986年03期

4 孫戈;冷壓細(xì)顆粒制品焙燒變色開裂芻議[J];碳素;1990年03期

5 朱孟欽,李春忠,胡黎明;細(xì)顆粒硫化鋅的制備及其研究進(jìn)展[J];化工進(jìn)展;1996年06期

6 劉錫昆,王利民,黃強(qiáng),周冬梅;細(xì)顆粒石墨材料的試制研究[J];炭素;1997年02期

7 王兆霖,李洪鐘;細(xì)顆粒的團(tuán)聚流態(tài)化及其判定[J];化工冶金;1995年04期

8 魏飛,程易,金涌,俞芷青;雙顆粒提升管中細(xì)顆粒的混合行為研究(Ⅰ)──軸向混合行為[J];化工學(xué)報;1996年05期

9 張德堯;采用廢鉭料制備細(xì)顆粒TaC粉[J];稀有金屬快報;2000年08期

10 江鎮(zhèn)海;細(xì)顆粒草酸鈷通過技術(shù)鑒定[J];無機(jī)鹽工業(yè);1996年04期

，

本文編號：2061456