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US-2021363385-A1 · Nov 25, 2021 · US
Fractionation of crude tall oil
US2022018069A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022018069-A1 |
| Application number | US-201917297566-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 6, 2019 |
| Priority date | Dec 11, 2018 |
| Publication date | Jan 20, 2022 |
| Grant date | — |
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- Title
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Abstract
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The present invention relates to fractionation of crude tall oil, which originates from the Kraft process black liquor. In the method, according to the present invention, simulated moving bed (SMB) chromatography is used to efficiently separate fractions from the crude tall oil.
First claim
Opening claim text (preview).
1 . A process for separating components from crude tall oil comprising the steps of a) providing crude tall oil, b) subjecting the crude tall oil to a simulated moving bed chromatography, thereby separating the crude tall oil into at least two fractions, and c) recovering each of the at least two fractions, wherein each fraction contains at least one component. 2 . The process according to claim 1 , wherein one of the at least two fractions comprises mainly unsaponifiables. 3 . The process according to claim 1 , wherein one of the at least two fractions comprises mainly crude tall oil having an acid number of at least 170. 4 . The process according to claim 1 , wherein the simulated moving bed chromatography is sequential simulated moving bed chromatography. 5 . The process according to claim 1 , wherein a solvent used in the simulated moving bed chromatography is selected from a group consisting of: toluene, ethyl acetate, acetone, butanone, ethanol, methanol, propanol, isopropanol, n-butanol, xylenes, dichloromethane, chloroform, propylene carbonate, ethylene carbonate, acetic acid and mixtures thereof. 6 . The process according to claim 1 , wherein a solid phase used in the simulated moving bed chromatography is selected from a group consisting of: silica, alumina, zeolite, or polymeric resin bearing polar groups. 7 . The process according to claim 1 , wherein phytosterols are isolated from at least one fraction recovered. 8 . The process according to claim 1 , wherein a crude tall oil having an acid number of at least 170 is isolated from at least one fraction recovered. 9 . A fraction separated and recovered according to the method of claim 1 . 10 . A process for separating components from crude tall oil comprising the steps of a) providing crude tall oil, b) subjecting the crude tall oil to a sequential simulated moving bed chromatography, thereby separating the crude tall oil into at least two fractions, and c) recovering each of the at least two fractions, wherein each fraction contains at least one component, wherein one of the at least two fractions comprises mainly crude tall oil having an acid number of at least 170. 11 . The process according to claim 10 , further comprising: isolating the crude tall oil having an acid number of at least 170 from the one of the at least two fractions.
Assignees
Inventors
Classifications
Simulated moving beds · CPC title
Refining · CPC title
- D21C11/0042Primary
Fractionating or concentration of spent liquors by special methods (concentration by evaporation D21C11/10) · CPC title
- C11B13/005Primary
of residues of the fabrication of wood-cellulose (in particular tall-oil) · CPC title
Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of more than two carbon atoms, e.g. cholane, cholestane, coprostane · CPC title
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Frequently asked questions
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- What does patent US2022018069A1 cover?
- The present invention relates to fractionation of crude tall oil, which originates from the Kraft process black liquor. In the method, according to the present invention, simulated moving bed (SMB) chromatography is used to efficiently separate fractions from the crude tall oil.
- Who is the assignee on this patent?
- Stora Enso Oyj
- What technology area does this patent fall under?
- Primary CPC classification D21C11/0042. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Thu Jan 20 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).