SEPARATION OF A MULTICOMPONENT SYSTEM FORMED IN THE PRODUCTION OF EPICHLOROHYDRIN

Epichlorohydrin is an important product of the basic organic synthesis. One promising direction of epichlorohydrin manufacturing is the liquid-phase epoxidation of allyl chloride with an aqueous solution of hydrogen peroxide in an organic solvent, methanol, in the presence of a heterogeneous catalyst, a titanium-containing zeolite. The multicomponent system of epichlorohydrin production according to this method contains allyl chloride, methanol, water, epichlorohydrin, 3-chloro-1,2-propanediol, 3-chloro-1-methoxypropanol-2 and hydrogen peroxide. In this work the thermodynamic topological analysis of the phase diagram of this multicomponent system of epichlorohydrin production was performed. On the basis of this study a principal technological scheme of separation of the studied system containing five distillation columns and a Florentine vessel was proposed.

epichlorohydrin, phase equilibrium, mathematical simulation, separation complex

1. Rakhmankulov D.L., Kimsanov B.K., Loktionov N.A., Dmitriev Yu.K., Chanishev R.R. Epichlorohydrin. Methods of preparation, physical and chemical properties, technology of production. Moscow: Khimiya Publ., 2003. 244 p (in Russ).

2. Epicerol Process. Growing Green. Solvay Chemicals, INC., February 2008.

3. Epichlorohydrin: review of world production and market. Evrazi’skiy chimicheskiy rinok. 2010. № 3. P. 2–7 (in Russ).

4. Gao H., Lu G., Suo J., Li S. Applied Catalysis A: General. 1996. V. 138(1). P. 27–38.

5. Kumar R.P., Kumar R. Eco-friendly synthesis of epichlorohydrin catalyzed by titanium silicate (TS1) molecular sieve and hydrogen peroxide. Catalysis Commun. 2007. V. 8. P. 379–382.

6. Sulimov A.V., Danov S.M., Ovcharova A.V., Obrivalina A.V., Telyashev R.G., Ovcharov A.A., Balashov A.L. Neftegazochimiya (Oil-Gas Chemistry). 2013. № 1. P. 32–37 (in Russ.).

7. Ovcharova A.V. Development of technology for the production of epichlorohydrin: PhD dissertation. Moscow, 2012. (in Russ.).

8. Sulimov A.V. Development of scientific bases and technologies for the production of heterocyclic oxygen-containing compounds: Dr.Sc. dissertation. Moscow, 2013. 330 p. (in Russ).

9. Sulimov A.V., Danov S.M., Ovcharova A.V., Ovcharov A.A., Flid V.R., Leont’eva S.V., Flid M.R., Trushechkina M.A. Izvestiya Akademii nauk. Seriya chimicheskaya (Proceedings of the Academy of Sciences. The Chemical series). 2016. № 2. P. 469–472 (in Russ).

10. Okhlopkova E.A., Serafimov L.A., Frolkova A.V. The study of the structure of phase equilibrium diagrams of four-component mixture of epichlorohydrin production products / Problemy idostizheniya v nauke i tekhnike (Problems and Advances in Science and Technology) / Collection of scientific papers according to the results of the international scientific-practical conference № 3. ICRON, Omsk, 2016. P. 152–158 (in Russ).

11. Garov V.T., Serafimov L.A. Physical and chemical basis of distillation and rectification. Leningrad: Khimiya Publ., 1975. 240 p. (in Russ).

12. Medvedev D.V., Frolkova A.V., Serafimov L.A. Determination of the structure of the diagram of distillation lines of quaternary system based on its sweep. Moscow: MITHT, 2011. 46 p (in Russ).

13. Serafimov L.A., Frolkova A.K. Thermodynamic topological analysis of the phase diagram as base of synthesis of separation schemes. Moscow: MITHT, 2004. 90 p (in Russ).