METHOD AND EQUIPMENT FOR GREASE PURIFICATION
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United States of America Patent
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Issued Date -
Jun 3, 2021
app pub date -
Dec 13, 2017
filing date -
Dec 13, 2017
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Abstract
A method for grease purification is disclosed. The method comprises steps of: S1, feeding crude grease into a grease hydrolysis column to be hydrolysed so as to obtain aqueous phase, organic phase, and middle layer substances between the aqueous phase and the organic phase; S2, feeding the organic phase and the middle layer substances in the grease hydrolysis column into a flash stripping column to be flashed so as to obtain vaporized products and non-vaporized products; and S3, feeding the vaporized products in the flash stripping column into a separation column to be separated so as to obtain fatty acid. By this method, fatty acid with a high purity can be obtained; glycerin can be obtained as a co-product; and high value-added nutrients in the grease can be collected. Therefore, the use value of grease can be greatly improved.
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