本文選題：垂直液膜 + 活性劑濃度�。� 參考：《物理學(xué)報(bào)》2017年18期

【摘要】：針對含不溶性活性劑的垂直液膜排液過程,基于文獻(xiàn)實(shí)驗(yàn)結(jié)果進(jìn)一步完善了受活性劑濃度影響的分離壓(disjoining pressure)模型,應(yīng)用潤滑理論建立了液膜厚度、活性劑濃度和液膜表面速度的演化方程組,通過數(shù)值計(jì)算分析了在不同分離壓作用下含不溶性活性劑液膜的演化特征.結(jié)果表明,垂直液膜的排液過程通常經(jīng)歷兩個(gè)階段:首先是厚膜階段,此時(shí)重力對排液過程起主導(dǎo)作用.在隨后的薄膜階段,毛細(xì)作用和分離壓作用影響逐漸增大,其中分離壓將控制液膜的演化歷程.分離壓對垂直液膜排液過程的影響與活性劑類型及活性劑濃度與靜電作用力的關(guān)聯(lián)強(qiáng)度密切相關(guān).當(dāng)分離壓與活性劑濃度正相關(guān)時(shí),隨斥力關(guān)聯(lián)系數(shù)α增大,液膜的排液和變薄過程得以減緩,由此增強(qiáng)了液膜穩(wěn)定性;當(dāng)分離壓與活性劑濃度負(fù)相關(guān)時(shí),隨斥力關(guān)聯(lián)系數(shù)α絕對值增大,液膜排液過程加速,由此加大液膜失穩(wěn)的風(fēng)險(xiǎn).
[Abstract]:In view of the vertical liquid membrane discharge process with insoluble active agents, the separation pressure (disjoining pressure) model affected by the concentration of the active agent was further improved based on the experimental results in the literature, and the thickness of the liquid film was established by the lubrication theory. The evolution equations of the concentration of active agent and the surface velocity of liquid film were calculated and the evolution characteristics of the liquid membrane containing insoluble active agent under different separation pressures were analyzed numerically. The results show that the drainage process of vertical liquid film usually goes through two stages: first, the thick film stage, where gravity plays a leading role in the drainage process. In the subsequent film stage, the effects of capillary action and separation pressure are gradually increasing, and the separation pressure will control the evolution process of the liquid membrane. The effect of separation pressure on the vertical liquid membrane efflux is closely related to the type of active agent and the correlation strength between the concentration of active agent and electrostatic force. When the separation pressure is positively correlated with the concentration of the active agent, the process of liquid discharge and thinning of the liquid membrane is slowed down with the increase of the repulsion correlation coefficient 偽, which enhances the stability of the liquid membrane, and when the separation pressure is negatively correlated with the concentration of the active agent, With the increase of the absolute value of the coefficient of repulsive force 偽, the process of liquid membrane efflux accelerates, thus increasing the risk of the instability of liquid film.
【作者單位】： 華北電力大學(xué)電站設(shè)備狀態(tài)監(jiān)測與控制教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金(批準(zhǔn)號(hào):11202079) 河北省自然科學(xué)基金(批準(zhǔn)號(hào):A2015502058)資助的課題~~
【分類號(hào)】：TQ021.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 嚴(yán)忠;;日本液膜的研究現(xiàn)狀[J];膜科學(xué)與技術(shù);1988年04期

2 聶菲,李宗孝;液膜技術(shù)在醫(yī)藥化工中的應(yīng)用[J];精細(xì)化工中間體;2004年01期

3 杜世元;趙耀華;;薄液膜蒸發(fā)傳熱影響因素分析[J];化學(xué)工程;2011年04期

4 金桃根;;液膜分離含酚溶液研究[J];膜科學(xué)與技術(shù);1982年02期

5 張秀娟;張興泰;范瓊嘉;劉振芳;;液膜分離鉀離子的研究——鉀離子的促進(jìn)遷移和活性遷移[J];華南工學(xué)院學(xué)報(bào);1980年02期

6 張秀娟,張興泰,范瓊嘉,劉振芳;液膜分離鉀離子的研究——鉀離子的促進(jìn)遷移與活性遷移[J];化工學(xué)報(bào);1981年01期

7 張仲甫;張瑞華;汪德先;黃炳輝;;用液膜技術(shù)濃縮和分離稀土溶液[J];膜科學(xué)與技術(shù);1986年01期

8 陳篤生;連續(xù)式液膜分離塔[J];現(xiàn)代化工;1986年02期

9 姚曉春;李盤生;;氣體在液膜中“促進(jìn)”傳遞理論研究與應(yīng)用綜述[J];膜科學(xué)與技術(shù);1988年02期

10 張仲甫,黃志勇,汪德先;用液膜技術(shù)分離鈮和鉭[J];膜科學(xué)與技術(shù);1989年04期

相關(guān)會(huì)議論文 前2條

1 盧敏;武斌;朱家文;;胺法脫除CO_2過程的研究[A];上海市化學(xué)化工學(xué)會(huì)2005年度學(xué)術(shù)年會(huì)論文摘要集[C];2005年

2 郭盛昌;陳藹t，

本文編號(hào)：2067891