A customer wanted to evaluate the effectiveness of melt crystallization for the purification of acrylic acid prepared by an alternative process scheme. This commercially practiced technique involves a carefully controlled partial crystallization of a falling film which selectively crystallizes product and rejects impurities into the liquid residue. MATRIC designed an experimental plan to enable determination of the commercial feasibility of using this purification method to produce glacial acrylic acid. The experimental results demonstrated the feasibility of the approach and defined the parameters needed to achieve the desired quality.

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