Results 21 to 30 of about 1,020,348 (248)

Modeling of the Structure of Flows in a Nozzle Rectification Column by the Velocity Profile of the Steam Phase

open access: yesOil and Gas Technologies, 2021
An algorithm has been developed for calculating the main parameters of the flow structure by the velocity profile of the boiling liquid phase in a packed distillation column: differential and integral response and dispersion functions without determining
A. Golovanchikov, N. Prokhorenko
semanticscholar   +1 more source

Modeling the operation of a rectification column with trays made of highly porous permeable cellular material

open access: yesVolume 1, 2021
The main features of performing the technological calculation of rectification columns with contact devices made of highly porous permeable cellular material are considered. The results of model calculations of the process of rectification of an ethanol –
Pyotr S. Vasilyev, Pauline V. Tishina
semanticscholar   +1 more source

Project of laboratory rectification column for periodic work

open access: yesCzasopismo Techniczne, 2018
The paper presents a project of a rectification column working periodically for the production of ethyl alcohol. The project contains an assumption of a steady concentration of the distillate. Thee range of change in the reflux from 1.7 to 13 required to
J. Jamróz, D. Jankowski
openaire   +3 more sources

Simulation of energy-efficient modes of air separation in a rectification column for nitrogen production

open access: yesVolume 1, 2021
Using the dynamic model of the nitrogen production column of the ТКДС-100В gas production station, the possibility of increasing its productivity with a decrease in the working pressure in the rectifier is shown.
M. I. Slyusarev   +3 more
semanticscholar   +1 more source

Rectification process control by separation process efficiency evaluation using a predictive model [PDF]

open access: yesEPJ Web of Conferences
The article considers the possibilities of optimizing the distribution of components over the height of the rectification column, which is a key factor for achieving high separation efficiency and quality of the obtained products.
Mukhitdinov Djalolitdin   +3 more
doaj   +1 more source

Exergetic Analysis of a Cryogenic Air Separation Unit

open access: yesEntropy, 2022
This case study analyzes a cryogenic air separation unit (ASU) with a production of V˙O2=58,300 [m3Nh] of gaseous oxygen with a concentration greater than 98.5%, operating in Romania on a steel plant platform.
Sorin Bucsa   +6 more
doaj   +1 more source

Heterogeneous Batch Distillation Processes: Real System Optimisation [PDF]

open access: yes, 2008
In this paper, optimisation of batch distillation processes is considered. It deals with real systems with rigorous simulation of the processes through the resolution full MESH differential algebraic equations. Specific software architecture is developed,
B. Kotai   +41 more
core   +1 more source

Complementary Algorithms For Tableaux [PDF]

open access: yes, 2000
We study four operations defined on pairs of tableaux. Algorithms for the first three involve the familiar procedures of jeu de taquin, row insertion, and column insertion.
Roby, Tom   +3 more
core   +3 more sources

Preattentive texture discrimination with early vision mechanisms [PDF]

open access: yes, 1990
We present a model of human preattentive texture perception. This model consists of three stages: (1) convolution of the image with a bank of even-symmetric linear filters followed by half-wave rectification to give a set of responses modeling outputs of
Malik, Jitendra, Perona, Pietro
core   +2 more sources

DEPENDENCE OF EXTERNAL AND INTERNAL ENERGY-SAVING FOR RECTIFICATION OF BINARY MIXTURES

open access: yesТонкие химические технологии, 2016
The comparison of energy consumption for rectification of binary mixtures in one-column and twocolumn apparatuses was carried out with the use of vapor flow energy from the first column for heating the second column.
M. K. Zakharov, A. A. Shvets
doaj   +1 more source

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