Method for producing sugar solution
US-9212377-B2 · Dec 15, 2015 · US
Method of producing sugar solution
US9951393B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9951393-B2 |
| Application number | US-201314417180-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 8, 2013 |
| Priority date | Aug 10, 2012 |
| Publication date | Apr 24, 2018 |
| Grant date | Apr 24, 2018 |
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- Title
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Abstract
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A method of producing a sugar liquid includes filtering a cellulose-derived sugar liquid through one or more separation membranes selected from the group consisting of an ultrafiltration membrane, a nanofiltration membrane and a reverse osmosis membrane and washing the separation membrane(s) after filtration with washing water containing an alkaline substance and an aromatic compound at 10° C. or more and less than 50° C.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of producing a sugar liquid comprising: filtering a cellulose-derived sugar liquid through one or more separation membranes selected from the group consisting of a nanofiltration membrane and a reverse osmosis membrane; and washing the separation membrane(s) after filtration with a washing water containing both an alkaline substance and an aromatic compound at 10° C. or more and less than 50° C., wherein the aromatic compound is one or more selected from the group consisting of coumaric acid, ferulic acid, coumaramide, ferulamide and vanillin, and a concentration of the aromatic compound in the washing water is 500 to 10,000 ppm. 2. The method of producing a sugar liquid according to claim 1 , wherein the alkaline substance is sodium hydroxide and/or potassium hydroxide. 3. The method of producing a sugar liquid according to claim 1 , wherein the washing water further comprises at least one of hydroxymethylfurfural (HMF) and furfural. 4. The method of producing a sugar liquid according to claim 1 , wherein the washing water is a derived from a filtrate obtained by passing a cellulose-derived sugar liquid through a nanofiltration membrane and/or a reverse osmosis membrane. 5. The method of producing a sugar liquid according to claim 1 , wherein the cellulose-derived sugar liquid is a cellulose-derived sugar liquid filtered through a microfiltration membrane. 6. The method of producing a sugar liquid according to claim 1 , wherein the separation membrane is washed by cross-flow filtration of the washing water through the separation membrane(s). 7. The method of producing a sugar liquid according to claim 6 , wherein a linear velocity of the washing water on a membrane surface is 5 to 50 cm/sec.
Assignees
Inventors
Classifications
Chemical reaction · CPC title
Use of hot water or water vapor · CPC title
Forward flushing · CPC title
Membrane cleaning or sterilisation {; Membrane regeneration} · CPC title
By influencing the flow · CPC title
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- What does patent US9951393B2 cover?
- A method of producing a sugar liquid includes filtering a cellulose-derived sugar liquid through one or more separation membranes selected from the group consisting of an ultrafiltration membrane, a nanofiltration membrane and a reverse osmosis membrane and washing the separation membrane(s) after filtration with washing water containing an alkaline substance and an aromatic compound at 10° C. …
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification C13K1/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 24 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).