US 12,753,364 B2Granted

Recovery method for neutral and lipid components contained in Tall Oil Soap (TOS) or its saponified derivatives: lipid components such as fatty acids (FA), rosinic acids (RA), neutral components or neutral material (NM) including phytosterols

AssigneesAmerican Bioprocess SPA, Miguel Angel Fuenzalida Diaz

InventorsMiguel Angel Fuenzalida Diaz, Rodrigo Alejandro Mancilla Villalobos, Raul Ignacio Aravena Contreras

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Abstract

A method of separation and recovery of neutral and lipid components contained in saponifiable mixtures such as lipids and residues of plant and animal origin or saponified such as Tall Oil Soap (TOS), or in their saponified derivatives, which is based on differences in their solubility in a solvent or in a mixture of solvents from the group consisting of water and alcohols.

Claims31

Dependent claims

A recovery method for neutral and lipid components contained in Tall Oil Soap (TOS) or its saponified derivatives;

lipid components neutral components or neutral material (NM) comprising the following steps:
(a) obtaining TOS or saponifying a saponifiable TOS-derived RM until total hydrolysis of phytosterol esters;
(b) from the TOS or the saponified RM, producing a solution or dispersion of said TOS or said saponified RM in a solvent that dissolves the major components:
the sodium salts of fatty acids and/or rosinic acids;
c) from the solution or dispersion obtained in step (b) precipitating a stream enriched in NM and/or phytosterols, non-volatile base;
(d) separating said precipitate enriched in NM and/or phytosterols, obtained in step (c), from the saponified liquid stream depleted in NM and/or phytosterols;
(e) washing the precipitate separated from step (d) by one or more washes that include one or more solvents that may include water, alcohols, or solvent recovered from the process and recovering a washed precipitate;
(f) recovering the saponified liquid streams depleted in NM and/or phytosterols obtained in steps (d) and (e) but more concentrated in fatty acid soaps and/or rosinic acid soaps, non-volatile base, with respect to the initial TOS or the initial saponified RM to obtain a fraction called refined TOS;
(g) acidulate the saponified liquid stream depleted in NM and/or phytosterols, from step (f), using sulfuric acid or sodium sesquisulfate solutions or a mixture thereof, considering in any case:
(a) total alkalinity of the liquid stream to calculate the concentrations of the acidulating (b) aqueous solutions of sulfuric acid and/or sodium sesquisulfate concentrations not greater than 70% w/w and 30% w/w respectively and (c) that the pH of the mixture is kept between 3 and 4;
(h) separating the acidulated stream from step (g) into a stream rich in fatty acids and rosinic acids and a used solvent stream containing substantially no fatty acids or rosinic acids;
(i) recovering from the stream rich in fatty acids and rosinic acids of step (h) a stream of refined Tall Oil (TO) essentially free of water, solvent and salts;
(j) recovering from the used solvent stream separated in step (h), and containing substantially no fatty acids or rosinic acids, a Recovered Solvent (RS) stream to be reused during the process, for example in steps b), e) or g).

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Dependencies are inferred from the claim text.

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Abstract

A recovery method for neutral and lipid components contained in Tall Oil Soap (TOS) or its saponified derivatives;

lipid components neutral components or neutral material (NM) comprising the following steps:
(a) obtaining TOS or saponifying a saponifiable TOS-derived RM until total hydrolysis of phytosterol esters;
(b) from the TOS or the saponified RM, producing a solution or dispersion of said TOS or said saponified RM in a solvent that dissolves the major components:
the sodium salts of fatty acids and/or rosinic acids;
c) from the solution or dispersion obtained in step (b) precipitating a stream enriched in NM and/or phytosterols, non-volatile base;
(d) separating said precipitate enriched in NM and/or phytosterols, obtained in step (c), from the saponified liquid stream depleted in NM and/or phytosterols;
(e) washing the precipitate separated from step (d) by one or more washes that include one or more solvents that may include water, alcohols, or solvent recovered from the process and recovering a washed precipitate;
(f) recovering the saponified liquid streams depleted in NM and/or phytosterols obtained in steps (d) and (e) but more concentrated in fatty acid soaps and/or rosinic acid soaps, non-volatile base, with respect to the initial TOS or the initial saponified RM to obtain a fraction called refined TOS;
(g) acidulate the saponified liquid stream depleted in NM and/or phytosterols, from step (f), using sulfuric acid or sodium sesquisulfate solutions or a mixture thereof, considering in any case:
(a) total alkalinity of the liquid stream to calculate the concentrations of the acidulating (b) aqueous solutions of sulfuric acid and/or sodium sesquisulfate concentrations not greater than 70% w/w and 30% w/w respectively and (c) that the pH of the mixture is kept between 3 and 4;
(h) separating the acidulated stream from step (g) into a stream rich in fatty acids and rosinic acids and a used solvent stream containing substantially no fatty acids or rosinic acids;
(i) recovering from the stream rich in fatty acids and rosinic acids of step (h) a stream of refined Tall Oil (TO) essentially free of water, solvent and salts;
(j) recovering from the used solvent stream separated in step (h), and containing substantially no fatty acids or rosinic acids, a Recovered Solvent (RS) stream to be reused during the process, for example in steps b), e) or g).

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