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AssigneeEastman Chemical Company
InventorsBhaskar Krishna Arumugam, Steven Thomas Perri, Elaine Beatrice Mackenzie, Larry Wayne Blair, Joseph Robert Zoeller
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The present invention is a process for the preparation of ascorbic acid using a simulated moving bed (SMB) reactor system to accomplish the simultaneous conversion of KLG or a derivative of KLG to ascorbic acid and the separation of reaction products. The SMB reactor contains a solid or mixture of solids effective for catalyzing the reaction of KLG or its derivative and for separating the reactions products by selective adsorption of at least one product. In a general embodiment, this process involves (1) feeding a solution of KLG or a derivative thereof in a first solvent and a desorbent which is miscible with the first solvent, to a simulated moving bed reactor; (2) reacting the KLG or the KLG derivative to form ascorbic acid; and (3) removing from the simulated moving bed reactor (i) a first liquid stream comprising a solution of ascorbic acid in the desorbent and the first solvent (ii) a second liquid stream comprising the first solvent and the desorbent.
A process for the preparation of ascorbic acid which comprises the steps of:
A process for the preparation of ascorbic acid which comprises the steps of:
Process according to 13 wherein the volume ratio of the aqueous solution of KLG or derivative thereof and desorbent of Step I is 1:1 to 1:10.
Dependencies are inferred from the claim text.