Results 31 to 40 of about 538,368 (282)

CRITERIA OF EFFICIENCY ESTIMATION OF RECTIFICATION COLUMNS

IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA, 2018
This article deals with the efficiency of rectification columns which is often measured by the value of tray efficiency or single height of packing. The analysis of the factors influencing the efficiency of the rectification process was provided. This article shows that the commonly used Murphree efficiency factor in most cases estimates the efficiency
A.V. Polyanskiy, V.N. Blinichev, O.V. Chagin   +2 more
openaire   +1 more source

Device for increasing the efficiency of the packed heat and mass transfer column and manufacturing method [PDF]

MATEC Web of Conferences, 2020
The article presents the developed design of the heat and mass transfer column device with contact elements made of skewed sheets, which makes it possible to mitigate the disadvantages of using structural nozzles.
Kozlov Aleksandr V., Ignatiev Vladislav G., Zheltoukhov Ivan V., Ovcharov Victor G., Skripkin Valery V., Popov Alexander N.   +5 more
doaj   +1 more source

REALIZABILITY FIELD AND AUTOMATIC OPTIMIZATION OF BINARY RECTIFICATION COLUMN

, 2018
It was shown that the dependence of maximal productivity of binary rectification column on heat consumption taking into account the irreversibility of heat and mass transfer can be charaterized with two generalized parameters.
A.M. Tsirlin, I.A. Sukin
core   +1 more source

Fractionation of the essential oil from juniper (Juniperus ommunis L.) berries by hydrodistillation and rectification [PDF]

Hemijska Industrija, 2017
This paper deals with fractionation of the essential oil from juniper (Juniperus communis L.) berries by hydrodistillation (HD) and simultaneous hydrodistillation and rectification (SHDR) at atmospheric pressure.
Marković Miljana S., Bošković-Vragolović Nevenka M., Ristić Mihailo S., Pavićević Vladimir P., Veljković Vlada B., Milojević Svetomir Ž.   +5 more
doaj   +1 more source

Computational Mass Transfer Study of Special High-efficiency Packing Used in the Separation of Carbon-13

Journal of Isotopes, 2020
The separation of stable isotope carbon-13（13C） is very difficult because the separation coefficient is only 1.007. So it is necessary that nearly three thousand theoretical stages should be required to obtain a high abundance product of 99 atom% 13C. In
TIAN Yesheng;LI Hulin
doaj   +1 more source

MANAGEMENT OF OIL RECTIFICATION PROCESS BY USING OF MODELS OF PROCESS AND VIRTUAL ANALYZERS

Известия высших учебных заведений: Нефть и газ, 2018
The article considers the management of an atmospheric column by using of dynamic rectification model. The criteria of management are defined. The method the optimization is chosen.
L. G. Tugashova, A. A. Goncharov
doaj   +1 more source

An Adaptive Inhibitory WSe2 Transistor for Retinomorphic In‐Sensor Image Processing

Advanced Functional Materials, EarlyView.
Conventional retinomorphic devices typically require deliberate gate‐bias tuning for each illumination condition. In this paper, we demonstrate an adaptive inhibitory WSe2 transistor that uses photo‐induced regime shift between the subthreshold and accumulation modes to achieve decision‐free, intensity‐adaptive image processing within a single pixel ...
Juhwan Baek, Junhwa Oh, Hyeonjung Kim, Minsik Park, Haein Cho, Jin Young Park, Hyeonchang Son, Taeyun Kim, Sung‐Un An, Yamin Zhang, Hyeon‐Jin Shin, Seyong Oh, Dong‐Ho Kang   +12 more
wiley   +1 more source

NONADIABATIC RECTIFICATION CONTACT DEVICES [PDF]

Техника и технология пищевых производств, 2017
On the basis of the developed method of heat rectification implying partial condensation of the vapor mixture rising along the height of the column and the resulting evaporation of condensate before it is mixed with the main stream of the flowing reflux ...
Voinov N.A., Zemtsov D.A., Zhukova O.P.
doaj   +1 more source

Mathematical Analysis of Discontinuous Rectification Columns at Pilot Scale Based on the Continuous Stable States Concept and MESH Equations

Revista Facultad de Ingeniería, 2022
Mathematical analysis and simulation of a discontinuous rectification column was performed using an operational strategy during the start-up before reaching a pseudo-stable state in discontinuous operation. The mathematical model was formulated focusing
Jennyfer Diaz-Angulo, Alfonso Barbosa-Meza, Fiderman Machuca-Martínez, Miguel-Ángel Mueses   +3 more
doaj   +1 more source

The Impact of Reflux Ratio on Rectification Column Theoretical Plate Number

, 2011
In this paper, the computer-aided calculation is introduced to study the influences of the reflux ratio on the theoretical plate number of rectification column.
Bi Zhang, Zuo Yong Li, Wei Liu, Jia Yang Wang   +3 more
core   +1 more source