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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F13%3A43895898%21RIV14-GA0-22340___
rdf:type
n8:Vysledek skos:Concept
dcterms:description
The standardization of the measuring method for the determination of packing separation efficiency should start with a full understanding of all the conditions that affect its measurements in order to maintain them at the identical level during the measurement of different packings with the aim of comparing or evaluating the effects of the geometric modification of newly developed/designed packings. The effect of the column diameter, the bottom concentration of the distillation mixture, and the packing height on the HETP and the pressure drop are evaluated on the basis of the data measured in columns with diameters of 0.15, 0.43, and 1.22 m packed with RSP 250, Mellapak 250Y, or Montz BSH 250 structured packing, and utilizing the cyclohexane/n-heptane distillation system. It was found that below the loading point, the pressure drop was only slightly affected by the column diameter. The difference between the pressure drops of the 0.15 and 1.22 m diameter columns was within the experimental data scatter. The effect of the concentration range of distillation mixture on the separation efficiency is more pronounced than is the effect of the column diameter. HETP increases with increasing bottom concentration and packing height, and the increase found in this paper reached 50%. The effect of the column diameter onto the packing separation efficiency is not significant. The HETP, measured in columns with widely different diameters using a distillation mixture of approximately the same concentration range, did not demonstrate any significant effect of the diameter. The presented data do not support the recommendation of Ottenbacher et al. (Chem. Eng. Res. Des., 2011, 8, 1427) to consider as relevant only the packing efficiencies measured on columns with a diameter of at least 0.4 m because the data from the smaller diameter columns are dominated by the wall effects. The standardization of the measuring method for the determination of packing separation efficiency should start with a full understanding of all the conditions that affect its measurements in order to maintain them at the identical level during the measurement of different packings with the aim of comparing or evaluating the effects of the geometric modification of newly developed/designed packings. The effect of the column diameter, the bottom concentration of the distillation mixture, and the packing height on the HETP and the pressure drop are evaluated on the basis of the data measured in columns with diameters of 0.15, 0.43, and 1.22 m packed with RSP 250, Mellapak 250Y, or Montz BSH 250 structured packing, and utilizing the cyclohexane/n-heptane distillation system. It was found that below the loading point, the pressure drop was only slightly affected by the column diameter. The difference between the pressure drops of the 0.15 and 1.22 m diameter columns was within the experimental data scatter. The effect of the concentration range of distillation mixture on the separation efficiency is more pronounced than is the effect of the column diameter. HETP increases with increasing bottom concentration and packing height, and the increase found in this paper reached 50%. The effect of the column diameter onto the packing separation efficiency is not significant. The HETP, measured in columns with widely different diameters using a distillation mixture of approximately the same concentration range, did not demonstrate any significant effect of the diameter. The presented data do not support the recommendation of Ottenbacher et al. (Chem. Eng. Res. Des., 2011, 8, 1427) to consider as relevant only the packing efficiencies measured on columns with a diameter of at least 0.4 m because the data from the smaller diameter columns are dominated by the wall effects.
dcterms:title
The Effect of Column Diameter and Packing Height on the Pressure The Effect of Column Diameter and Packing Height on the Pressure
skos:prefLabel
The Effect of Column Diameter and Packing Height on the Pressure The Effect of Column Diameter and Packing Height on the Pressure
skos:notation
RIV/60461373:22340/13:43895898!RIV14-GA0-22340___
n8:predkladatel
n9:orjk%3A22340
n3:aktivita
n16:S n16:P
n3:aktivity
P(GA13-01251S), S
n3:cisloPeriodika
1
n3:dodaniDat
n18:2014
n3:domaciTvurceVysledku
n7:7287615 n7:2299887 n7:8871213
n3:druhVysledku
n12:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n11:predkladatel
n3:idSjednocenehoVysledku
71418
n3:idVysledku
RIV/60461373:22340/13:43895898
n3:jazykVysledku
n17:eng
n3:klicovaSlova
packed column design; structured packing; packed column; distillation; absorption
n3:klicoveSlovo
n6:distillation n6:packed%20column%20design n6:absorption n6:structured%20packing n6:packed%20column
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[2CCC86C601DC]
n3:nazevZdroje
Industrial & Engineering Chemistry Research
n3:obor
n19:CI
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n14:GA13-01251S
n3:rokUplatneniVysledku
n18:2013
n3:svazekPeriodika
52
n3:tvurceVysledku
Valenz, Lukáš Haidl, Jan Linek, Václav
s:issn
0888-5885
s:numberOfPages
8
n15:organizacniJednotka
22340