Estimate how much product is lost in thin-film evaporator

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Reference no: EM131198760

Guaifenesin (Guaiacol glyceryl ether, 3-(2-Methoxyphenoxy)-1,2-propanediol, C10H14O4) is an expectorant that is found in cough medicines such as Actifed^TM and Robitussin^TM. U.S. 4,390,732 (to Degussa) describes a preparation of the active pharmaceutical ingredient (API) from guaiacol (2-methoxyphenol, C7H8O2) and glycidol (3-hydroxy propylene oxide, C3H6O2). When the reaction is catalyzed by NaOH, the reaction yield is 93.8%. The product is purified in a thin-film evaporator giving an overall plant yield of 87%.

a. Estimate the feed flow rates of glycine and guaiacol that would be needed to produce 100 kg/day of the API.

b. Estimate how much product is lost in the thin-film evaporator.

c. How would you recover the product lost in the evaporator?

Reference no: EM131198760

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