OP-II-3

PP-II-23One of the main technological parameters, whichdefines foam hydrodynamic process regime and plantproductivity, – linear speed of the gas-phase (w g ). Theinfluence of the w g on the yield polymer (ε), molecularweight (is expressed with the adduced ductility), gradedegree of the polyamide fibrids 6T(polygexametilentereflamids) was experimentalsearched. Because the parameter «linear speed of thegas-phase» as criterion of the reactor-fibridator projecttion,which have different diameters and construction1 – confusor of the first level;2 – diffuser; 3 – confusor of theof the entering method of the gas-phase, is unusable, second level; 4 – choke of thefluid phase travel; 5 – pressring;6 – closurethe analysis of the reactor equipment was conducted.Optimal values of the hydrodynamic likeness Pic. 2. Two-phase confusordiffuserreaction chambercriterion (Reinolds Re r and Frud Fr r ) for the reactorfibridators:without grill with the two-phase reactor cameras Re r = 7000-9000,Fr r = 8000-10000; with grills Re r = 16000-20000, Fr r = 1800-2200 were found. Thesecriterion dependences help to model processes of the gas-fluid polycondensation bythe synthesis of the fibrids 6Т, which are flowed in the in tensive foam regime, and bythe given diameter of the equipment taking into account his constructioncharacteristic and to define optimal linear speed and productivity of the equipment onthe whole.(dReaktor-fibridator has small siye and high productivity G, which is defined with2 g .phthe formula: G = 2 , 83 ⋅ wg⋅ d ⋅CCA⋅ M ⋅ε ,kg / h,– reactor-fibridator inside diameter, m;3g.phCCA– molar concentration of the СА,mole/m ; М – polymer segment molecular mass, g/mole).The pilot plant was equipped by reactor-fibridators with inside diameter from 16till 200 millimeter. More than 20 kinds of homo- and copolyamide fibrids werereceived.References[1]. V.A. Nikiforov, S.A.Zhizhilev, A.G. Mukhometzyanov, L.B. Sokolov, N.I. Gelperin, T.I. Nikitina,V.I. Rabinovich. Gaz/liquid interfacial preparation of poliamide fibrids. Patent 4396758 (USA).[2]. V.A. Nikiforov, E.A. Pankratov, E.I. Lagusseva, A.V. Berezkin. Gas-liquid polycondensation. Tver,TSTU, 2004. 268 p.375