Preview

Fine Chemical Technologies

Advanced search

Development of Reaction-Rectification Process of Obtaining Mesityl Oxide. II. Analysis of Statics and Modeling of the Process

https://doi.org/10.32362/2410-6593-2019-14-2-23-32

Full Text:

Abstract

Using the results of an earlier study of the physicochemical properties of the reaction system of the process of producing mesityl oxide, an analysis of the statics of the combined variant of the organization of this process was carried out. It is shown that of practical interest are the modes of the process corresponding to the first specified separation. In this case, the limiting stationary states, characterized by the maximum acetone conversion, selectivity, and the yield of the target product — mesityl oxide, are distinguished. The possibility of practical implementation of the limiting stationary state of the reactive distillation process for producing mesityl oxide, which provides almost complete conversion of acetone with a yield of mesityl oxide approaching 100%, has been proved. The limit stationary state corresponds to the reaction-distillation process with the selection of a single product stream. For the mode of carrying out the combined process that corresponds to the selected limiting stationary state, a schematic flow chart for the production of the target product has been proposed. By means of computational research, it has been established that the most rational option for organizing a reaction hub is to use a single apparatus in it — the reaction-distillation column. In the Aspen Plus® software package, a process model was constructed that corresponded to the proposed technological scheme and through a computational experiment, its structural and parametric optimization was carried out. As a result, the static parameters of the technological system were established, as well as the characteristics of the apparatuses, allowing to obtain the required quality product in the reactiondistillation column. output, approaching 100%. It has been shown that when modeling a chemicaltechnological system, it is necessary to use different sets of parameters of the basic equation used to describe phase equilibrium. Thus, for calculating reactive distillation and distillation columns, the liquid – vapor phase equilibrium parameters for the mesityl oxide–water system should be used, and when calculating the Florentine vessel for this mixture, it is necessary to use the parameters corresponding to the liquid – liquid equilibrium. The use of a single set of parameters of the basic equation leads to significant errors and inadequate description of the process of producing mesityl oxide by condensation of acetone.

About the Authors

M. A. Yakhyaev
MIREA – Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)
Russian Federation

Postgraduate Student of the Chair of Chemistry and Technology of Basic Organic Synthesis

86, Vernadskogo pr., Moscow 119571, Russia



V. S. Gutenkov
State Scientific Research Institute of Organic Chemistry and Technology
Russian Federation

Postgraduate Student of the Chair of Basic Organic Synthesis

23, Shosse Entuziastov, Moscow 111024, Russia



C. A. Cardona
National University of Colombia (Institute of Biotechnology and Agroindustry), headquarters Manizales
Colombia

Ph.D. (Engineering), Professor of the Chair of Chemical Engineering

headquarters Manizales, Manizales-Caldas, Colombia



Yu. A. Pisarenko
MIREA – Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)
Russian Federation

D.Sc. (Engineering), Professor of the Chair of Chemistry and Technology of Basic Organic Synthesis

86, Vernadskogo pr., Moscow 119571, Russia



References

1. Yakhyaev M.A., Gutenkov V.S., Pisarenko Yu.A. Development of reaction-rectification process of obtaining mesityl oxide. I. Preparation of initial data for modeling. Tonkie Khim. Tekh. = Fine Chemical Technologies. 2018; 13(5):5-13. (in Russ.)

2. Thotla S., Agarwal V., Mahajani S.M. Simultaneous production of diacetone alcohol and mesityl oxide from acetone using reactive distillation. Chem. Eng. Sci. 2007; 8(62):5567-5574.

3. Pisarenko Yu.A., Serafimov L.A., Kulov N.N. The fundamentals of the analysis of the statics of reaction-rectification processes with several chemical reactions. Teoreticheskie osnovy khimicheskoi tekhnologii =Theoretical Foundations of Chemical Technology. 2009; 43(5):1-18. (in Russ.)

4. Ainshtein V.G., Zakharov M.K., Nosov G.A. Processes and apparatus of chemical technology. General course. Moscow: Laboratoriya znanij Publ., 2014. 1758 p. (in Russ.)

5. Stringaro J.P. Catalyzing fixed bed reactor: pat. US 5470542 USA. – No. 08/265,586; filed 06/23/1994; publ. 11/28/1995.

6. Gelbein A.P., Buchholz M.W. Process and structure for effecting catalytic reactions in distillation structure: A.c. EP 0428265 B1 EPC. – No.19970226; filed 11/13/1989; publ. 02/26/1997.

7. Frolkova A.K. Theoretical bases of separation of multicomponent multiphase systems with the use of functional complexes: D.Sc. (Engineering) thesis. Moscow, 2000. 364 p. (in Russ.)

8. Frolkova A.V., Merkul'eva A.D., Gaganov I.S. Synthesis of separation schemes for exfoliating mixtures: The current state of the problem. Tonkie Khim. Tekh. = Fine Chemical Technologies. 2018; 13(3):5-55. (in Russ.).

9. Verkhovskaya Z.N., Klimenko M.Ya., Zalesskaya E.M., Bychkova I.N. Synthesis of diacetone alcohol and mesityl oxide on ion-exchange resins. Khimicheskaya promyshlennost’ (Chemical Industry). 1967; (7):20-23. (in Russ.)


Supplementary files

1. Fig. 5. Change in acetone conversion at the outlet of the reaction node depending on the share of the catalyst located in the reaction-fractionating column.
Subject
Type Research Instrument
View (28KB)    
Indexing metadata

For citation:


Yakhyaev M.A., Gutenkov V.S., Cardona C.A., Pisarenko Yu.A. Development of Reaction-Rectification Process of Obtaining Mesityl Oxide. II. Analysis of Statics and Modeling of the Process. Fine Chemical Technologies. 2019;14(2):23-32. (In Russ.) https://doi.org/10.32362/2410-6593-2019-14-2-23-32

Views: 267


ISSN 2410-6593 (Print)
ISSN 2686-7575 (Online)