化工时刊
化工時刊
화공시간
CHEMICAL INDUSTRY TIMES
2009年
7期
20-24
,共5页
王明明%彭璟%张锋%耿皎%张志炳
王明明%彭璟%張鋒%耿皎%張誌炳
왕명명%팽경%장봉%경교%장지병
γ-氨基丁酸%降膜%Marangoni效应%GABA提浓%液膜破裂
γ-氨基丁痠%降膜%Marangoni效應%GABA提濃%液膜破裂
γ-안기정산%강막%Marangoni효응%GABA제농%액막파렬
γ - aminobutyric acid falling film Marangoni effect the enrichment of GABA falling film frac-ture
本课题组借助高分辨率红外热像仪,研究了γ-氨基丁酸(GABA)水溶液在不同温度和流速条件下的降膜流动过程中,Marangoni效应对其流动和传热的影响.实验发现,受热降膜流动过程中液膜存在明显的收缩现象,横向热Marangoni效应显著,在相同的进料温度下,加热温度越高,液膜收缩越明显.同时由于降膜表面更新加快,GABA溶液降膜流动时的溶剂蒸发速度较常规加热方式大大提高.以上结果对于GABA的提浓、富集具有重要意义.
本課題組藉助高分辨率紅外熱像儀,研究瞭γ-氨基丁痠(GABA)水溶液在不同溫度和流速條件下的降膜流動過程中,Marangoni效應對其流動和傳熱的影響.實驗髮現,受熱降膜流動過程中液膜存在明顯的收縮現象,橫嚮熱Marangoni效應顯著,在相同的進料溫度下,加熱溫度越高,液膜收縮越明顯.同時由于降膜錶麵更新加快,GABA溶液降膜流動時的溶劑蒸髮速度較常規加熱方式大大提高.以上結果對于GABA的提濃、富集具有重要意義.
본과제조차조고분변솔홍외열상의,연구료γ-안기정산(GABA)수용액재불동온도화류속조건하적강막류동과정중,Marangoni효응대기류동화전열적영향.실험발현,수열강막류동과정중액막존재명현적수축현상,횡향열Marangoni효응현저,재상동적진료온도하,가열온도월고,액막수축월명현.동시유우강막표면경신가쾌,GABA용액강막류동시적용제증발속도교상규가열방식대대제고.이상결과대우GABA적제농、부집구유중요의의.
The falling film and Marangoni effect of γ- nminobutyric acid (GABA) aqueous solution under dif- ferent temperatures and flow rates with the infrared thermal -camera were investigated. It showed that the aqueous γ -aminobutyric falling film was shrinking clearly over the heated plate. When the solution temperature was constant, the shrink of heated film became more clearly with increasing heating temperature. Besides, the solvent evaporated more quickly in heated falling film than conventional heating method. The result was valuable to enrichment of GA- BA.
