Results 31 to 40 of about 1,020,348 (248)

CRITERIA OF EFFICIENCY ESTIMATION OF RECTIFICATION COLUMNS

open access: yesIZVESTIYA 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   +2 more
openaire   +1 more source

INTENSIFICATION OF HEAT EXCHANGE IN DIABATIC RECTIFICATION COLUMNS

open access: yeschemistry of plant raw material, 2020
The heat exchange in a diabatic column was investigated during the rectification of an ethanol-water mixture, in which partial condensation of rising vapors on the surface of vertical heat exchange tubes installed vertically along the height of the installation was carried out, as well as the evaporation of intermediate condensate on the surface of ...
Nikolay Aleksandrovich Voinov   +3 more
openaire   +3 more sources

Monodromy and K-theory of Schubert curves via generalized jeu de taquin [PDF]

open access: yes, 2015
We establish a combinatorial connection between the real geometry and the $K$-theory of complex Schubert curves $S(\lambda_\bullet)$, which are one-dimensional Schubert problems defined with respect to flags osculating the rational normal curve.
Gillespie, Maria Monks, Levinson, Jake
core   +3 more sources

TECHNOLOGY OF CYCLIC DISTILLATION IN ALCOHOL PRODUCTION

open access: yesHarčova Nauka ì Tehnologìâ, 2019
Alternate changing of the steaming periods and liquid overflow allows to intensify mass transfer between liquid and steam and to reduce the specific consumption of heating steam in the process of separation of multicomponent mixtures.
Y. Buliy, P. Shiyan, A. Kuts, I. Melnik
doaj   +1 more source

Gas isotope thermometry in the South Pole and Dome Fuji ice cores provides evidence for seasonal rectification of ice core gas records [PDF]

open access: yesThe Cryosphere, 2022
Gas isotope thermometry using the isotopes of molecular nitrogen and argon has been used extensively to reconstruct past surface temperature change from Greenland ice cores. The gas isotope ratios δ15N and δ40Ar in the ice core are each set by the amount
J. D. Morgan   +7 more
doaj   +1 more source

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

open access: yesMATEC 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.   +5 more
doaj   +1 more source

Projective rectification from the fundamental matrix [PDF]

open access: yes, 2005
This paper describes a direct, self-contained method for planar image rectification of stereo pairs. The method is based solely on an examination of the Fundamental matrix, where an improved method is given for the derivation of two projective ...
Mallon, John, Whelan, Paul F.
core   +1 more source

Analysis of the Dynamic Characteristics of the Distillation Column of Plate Type

open access: yesEAI Endorsed Transactions on Energy Web, 2017
The relevance of the study related to the necessity to convert to “unmanned” production in a refinery and, as a consequence, we must derive a mathematical model of the high-octane gasoline process.
E. S. Gebel
doaj   +1 more source

Coupled Simulation of a Vacuum Creation System and a Rectification Column Block

open access: yesProcesses, 2020
The purpose of this study was the coupling simulation of the vacuum block of the ethanolamine mixture separation unit to determine the optimal layout of the vacuum creation system.
E. Osipov, É. Telyakov, S. Ponikarov
semanticscholar   +1 more source

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

open access: yesHemijska 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.   +5 more
doaj   +1 more source

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