Meccaniche Modeme

Meccaniche Modeme (Busto Arsizo, Italy) acquired rights to the original AUied Chemical Company s concentric SO sulfonation unit (272). Table 10 shows comparative data on AUied s U.S. design, and that for Meccaniche Modem s concentric design, indicating equivalency. This unit has a substantial space between reactor walls, hence it requires a 6 m length to complete reaction. The process has been scaled up to 4.0 t/h capacity. 

Stepan was the first to develop and conunercialize a continuous falling film SO3 sulfonation process. The design is a multitubular unit. The company operates about 12 falling film SO3 sulfonation units in the United States, not only for the production of linear alkyl benzene sulfonates, but substantial amounts of fatty alcohol and fatty alcohol ethoxylates are also sulfated. Other key commercial reactor designs are by Chemithon, Ballestra SpA, Lion, Mazzoni SpA, and Meccaniche Modeme. Several features are common to all falling-film systems. Fatty alcohol and alcohol ethoxylates are reacted at a rate of about 0.3 kg/h/mm with SO3 concentration at about 2-3%. Liquid residence times are estimated at 10-30 s and most units operate with gas velocities in the range of hurricane wind velocities (121-322 km/h). ° Linear alcohols and linear alcohol ethoxylates are by far the easiest to sulfate. Caution is required with branched alcohols as color and conversion can suffer. 

Meccaniche Modeme, (Corso Sempione 51, 21052 - Busto Arsizio, Italy), "Sulfonation Sulfation plants brochure", Catalogo All/8/278. 

Final product specification for Meccaniche Modeme falling-film reactor... 

Technical Brochures and Technical Proposals from Ballestra, Chemithon, Mazzoni, Meccaniche Modeme, Lion Co. 

The neutralisation equipment of Meccaniche Modeme, Mazzoni and Chemithon... 

Chemical analysis of exhaust gas leaving the sulphonation plant stack Typical sulphonation plant lay-out - Ballestra sulphurex plant 2000 kg/h Typical sulphonation plant lay-out - Meccaniche Modeme FFR 3000 kg/h Typical sulphonation plant lay-out - Chemithon FFR 2000 kg/h Phase diagram (60 C) sulphonic acid - sulphuric acid - water Chemithon 20% oleum sulphonation plant Chemithon 20% oleum tandem sulphonation plant (LAB and PA)... 

An examination is made of technical features of the BFC series of mbber mixers produced by Meccaniche Modeme, and which incorporate intermeshing rotors developed in collaboration with Kobe Steel. 

The frietion ratio between the rotors of tangential mixers is examined as a parameter for the control of the mixing process. Reference is made to internal mixers developed by Meccaniche Modeme in collaboration with Kobe Steel. MECCANICHE MODERNE SPA KOBE STEEL LTD. POMINI... 

The operation of two-roll mills used in the rabber indtrstry is described, and computer control and automation systems for such machines ate examined. The structure and dimensions of Duplocom mills manrrfactured by Meccaniche Modeme ate illustrated. 

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