Abstract
Industrial emulsion polymerization processes are usually performed in batch stirred reactors (or semi-batch reactors) or in continuous stirred tank reactors (CSTR). Continuous reactors have the advantage of being smaller and also providing a better product quality control by the reduction of the variations between one batch and the others. One pass tubular reactors may avoid periodical self-sustained oscillations observed in CSTRs. Good radial mixing and controlled axial mixing can be achieved using internals and pulsed (oscillatory) flow in tubular reactors. The aim of this work is to report the development of a tubular reactor (pulsed sieve plate column) for continuous emulsion copolymerization processes. The results presented refer to a continuous emulsion copolymerization of vinyl acetate and butyl acrylate in a pulsed sieved plate column. Experimental results for lateral monomer feed streams are compared with the case of all monomers being fed in the first section of the reactor. Also, experimental results are compared with predictions from a mathematical model previously developed for this process.
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