文档介绍：乙缩醛溶液的脱色研究
张群安,史政海,史小洁
(南阳理工学院生物与化学工程学院,南阳473004)
摘要:以乙缩醛生产过程中精馏塔塔底有色高沸物为研究对象,分别以粒状活性炭、硅藻土、活性白
土和粉煤灰为脱色剂,考察了其脱色的可能性,发现活性炭对其脱色最有效。以脱色温度、活性炭用量、脱
色时间和搅拌强度为实验因素,以脱色率为考察指标,分别用单因素实验和正交实验对乙缩醛溶液进行了脱
色研究,最终确定乙缩醛溶液脱色的最佳条件为:活性炭用量20%,脱色温度20℃,脱色时间6h,脱色率为
%。
关键词:乙缩醛;活性炭;吸光度;脱色
中图分类号:
文献标识码:A
文章编号:1006—2513(2012)01—0140一04
The decOIO rizatiOn reSearCh Of aCetaI SOl UtiOn
ZHANG
Q衄-粕,Sm zheng-hai,SHIⅪ
(711le
School of
Biolo西cal
and Chemical
En舀neering
Nanyang Institute of Technology, Nanyang
473004)
Abstract:It toook tlle high boiling
tempe眦ure
80lution in the bottom“tlle distillation column in acetals production
process幽research
object, respectively
by t}Ie伊anular activated carbon,
diatomite,activated clay and ny器h for de—
coloring agents,锄d investigated their decoloring
possibil酊,Then
we
found t}lat the activated carbon have
stIDng
in—
nuence
tIle
decol耐ng.
In decoloring tempe随ture,
tIle dosage of activated
c曲on,
山e bleaching time aJld stir inten-
sity璐experimental f如tors.
DeteⅡIlined tlle decolomd rate够index for investigation by
sinde
factor experiment卸d
tllogonal
exp谢ment desi印, 叩timum condition
0f acetals solution fh t}le decoloriIlg is: carbon dosage 20%,tempem.
tllre 20℃,time 6h,dec01渊Ting ratio for %.
1【ey words:acetal;activated carbon;absofbance; decolorization
乙缩醛是白洒老熟和质量的重