OP-II-3

PP-II-50MATHEMATICAL SIMULATION OF RECYCLED FLOWSHEETS ONTHE BASES OF LOW TEMPERATURE METHANOL SYNTHESISVyatkin Yu.L. 1 , Beskov V.S. 1† , Lishiner J.I. 2 , Malova O.V. 2 , Nefedova T.E. 31 Mendeleev`s Russian University of Chemical Technology, Moscow, RF,yuris-vtk@mtu-net.ru2 New Catalytic Technologies Ltd, Moscow, RF3 Institute of Chemical Technology, Severodonetsk, UAEarlier [1, 2] it was shown that methanol synthesis catalyzed by Cu-ZnO/Al 2 O 3proceeds the following two reaction routes:СО 2 + 3Н 2 = СН 3 ОН + Н 2 О + Q 1 K p1 (I)CO 2 + H 2 = CO + H 2 O + Q 2 K p2 (II)The simplest methanol synthesis flowsheet is presented in Fig.1:Fig. 1. Methanol synthesis flowsheet.Here М – mixer, R – reactor, Se – separator, S – Tee, L – liquid products, gas –gas purge. Ciphers are the numbers of molar flows at appropriate points of flowsheet,F 1 , F 3 – vector-columns of feed molar flow.In recycle flowsheet flow 7 is unknown. There exist mathematical models of allunits.Conventional calculation procedure (procedure I) of recycle flowsheets is asfollows:1) find a cut point to transform flowsheets into ones with no recycle. That may bepoints numbers 2,4 or 7.2) In consecutive order to solve mathematical models of all units.424