Results 181 to 190 of about 1,020,348 (248)

SUBSTANTIATION OF THE CHOICE OF THE FEED STAGE OF THE RECTIFICATION COLUMN WHEN OBTAINING FOOD ETHYL ALCOHOL BY THE METHOD OF MATHEMATICAL MODELING

Известия вузов. Пищевая технология, 2022
Проведены численные исследования работы ректификационной колонны по определению тарелки питания эпюрата методом математического моделирования в среде сложных химико-технологических систем Hysys.
Т.Г. Короткова, Хазрет Русланович Сиюхов, В.И. Демин, В.В. Энговатова   +3 more
semanticscholar   +1 more source

Modelling and Control of Rectification Column

2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA), 2022
Multidisciplinary system is being created for modeling and control of rectification process by desired product. The plant is realized in MATLAB. For this purpose, is created software in AppDesigner.
Ahmed Kula, A. Georgieva, G. Ruzhekov
semanticscholar   +1 more source

Issue of kerosene supply into live reflux flow of main rectification column of atmospheric vacuum pipestill process units

World of petroleum products, 2021
. In this article the possibility of suppling the kerosene fraction into the live reflux line of the K-2 column of the atmospheric vacuum pipestill units is reviewed.
D.A. Volynets, E. Chernyshova, A. Tarasov   +2 more
semanticscholar   +1 more source

On-line optimization of a rectification column

Computers & Chemical Engineering, 1988
Abstract A simple on-line optimal control algorithm is suggested for a rectification column. Two optimization criteria, energy supply and distillate production, lead to a vector optimization problem. The Pareto compromise set is constructed by the method of weight coefficients or by the method of e -constraints.
P. Rosendorf, M. Kubiček, J. Schöngut
openaire   +1 more source

Intermediate irrigation of complex rectification columns

Chemistry and Technology of Fuels and Oils, 1969
1. The use of “blind” trays in complex columns is not advantageous since, in this case, the connection of the sections with respect to the liquid flow is made difficult, and there is a lowering of the operating flexibility of the unit, with regulation of different industrial indices (removal and quality of distillates, degree of heating of the raw ...
A. K. Manovyan, A. I. Skoblo, O. K. Odintsov, N. A. Goncharova   +3 more
openaire   +1 more source

Enhancing performance of rectification columns for ethanolamine manufacturing

Russian Journal of Applied Chemistry, 2007
A problem is considered of enhancing performance of pilot plant installation for manufacturing ethanolamine by replacement of modern packed towers for old type rectification columns. The modernization result is increase in productivity and product quality, and energy saving.
A. G. Laptev, M. I. Farakhov, N. G. Mineev, E. A. Lapteva, V. N. Kudryashow, I. Kh. Mukhitov, M. G. Khusnullin, I. G. Askarov   +7 more
openaire   +1 more source

Cap-grid plates in rectification and absorption columns

Chemistry and Technology of Fuels and Oils, 1968
1. Cap-sieve plates are highly effective contact devices. 2. The capacity of cap-sieve plates is higher than that of cap plates and lower than that of sieve plates. 3. Cap-sieve plates ensure stable operation under considerable variations in load and, hence, are broad-range plates. 4. Owing to the special features
V. G. Chekmenev, S. A. Kruglov, A. I. Skoblo   +2 more
openaire   +1 more source

Rectification column contact equipment operating under cyclic conditions

Chemical and Petroleum Engineering, 1985
The influence of vapor velocity, reflux ratio, and the cycling parameters on the efficiency of a rectification column, operating under cyclic conditions, has been considered. Preliminary experiments using the ethanol-water system were performed to determine the optimum dimensions of the contact equipment with which subsequent investigations were ...
N. I. Gel'perin, L. M. Polotskii, M. S. Lenskii, A. A. Migai, O. Yu. Golant   +4 more
openaire   +1 more source

Design of packed distillation columns. III. Rectification film resistances in a packed column

Journal of Applied Chemistry, 1951
AbstractData are presented which lead to the conclusion that the liquid‐film resistance was the controlling resistance in rectification of a binary system carried out in a particular packed column. This confirms the conclusion reached by other workers on similar packed columns.
C. H. G. Hands, F. R. Whitt
openaire   +1 more source

Inferential control of propylene rectification column in ethylene process

Proceedings of the 4th World Congress on Intelligent Control and Automation (Cat. No.02EX527), 2003
Qilu Petrochemical Co. Ltd developed a soft measurement technique based on a neural network and implemented the computer online inferential control to control the propane and propylene consistency in the propylene rectification column.
null Lixin Li, null Feng Qian, null Anran Yu, null Yanqing He   +3 more
openaire   +1 more source