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Methods for reducing soap formation during vegetable oil refining

  • US 10,640,729 B2
  • Filed: 02/28/2019
  • Issued: 05/05/2020
  • Est. Priority Date: 03/21/2018
  • Status: Active Grant
First Claim
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1. A method for reducing soap formation during refining of a vegetable oil, the method comprising:

  • a. mixing an acid-treated vegetable oil with a base to neutralize free fatty acid and acid in the acid-treated vegetable oil to form a pretreated mixture;

    b. passing the pretreated mixture through a low-shear pump operating at a shear rate of less than 2,500 s

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    to increase pressure in the pretreated mixture to form a pressurized pretreated mixture; and

    c. forming a reacted mixture by passing the pressurized pretreated mixture through a static hydrodynamic reactor to induce a neutralization reaction in the pressurized pretreated mixture, the neutralization reaction forms soaps in the reacted mixture, the soaps being present in the reacted mixture at less than 200 ppm.

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