Packed reactors cation resin

Description Acetone and excess phenol are reacted in a BPA synthesis reactor (1), which is packed with a cation-exchange resin catalyst. Higher acetone conversion and selectivity to BPA and long lifetime are characteristic of the catalyst. These properties reduce byproduct formation and catalyst volume. Unreacted acetone, water and some phenol are separated from the reaction mixture by distillations (2-4). Acetone is recycled to the BPA reactor (1) water is efficiently discharged phenol is mixed with feed phenol and purified by distillation (5). The crude-product stream containing BPA, phenol and impurities is transferred to the ciystallizer (6), where ciystalline product is formed and impurities are removed by the mother liquor. Sep-... 

In order to generate a differential flow of acfivafor and inhibitor, the ferroin is immobilized on a cation-exchange resin that is packed in a vertical tubular reactor, while the rest of the reactants are forced to flow through the tube. The cation-exchange resin beads were loaded with ferroin solution and filled in tubular reactor. The rest of the reactants were allowed to flow through the loaded beads under suitable varying pressures. 

Son, S. M., Kimura, H., Kusakabe, K. (2011). Esterification of oleic acid in a three-phase, fixed-bed reactor packed with a cation exchange resin catalyst. Bioresource Technology, 102 2), 2130-2132. 

Hanika et al. (2003) investigated the esterification of acetic acid and butanol in a trickle bed reactor, packed with a strong acid ion- exchange resin (Purolite 151) at 343 K - 393 K. Experimental data illustrate the benefit of simultaneous esterification and partial evaporation of the reaction products in the multi-functional trickle bed reactor. In case of total wetting of the catalyst bed, contact of vaporized products (ester and water) with catalyst was naturally limited and thus, the backward reaction i.e. ester hydrolysis was suppressed. This phenomenon shifted the chemical equilibrium conversion to high values. Saletan (1952) obtained quantitative reaction rate data for the formation of ethyl acetate from ethanol and acetic acid in fixed beds of cation exchange resin catalyst. The complex interaction of diffusion and reaction kinetics within the resin, which determine over-all esterification rate, has been resolved mathematically. 

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