Process for producing a fructoside-containing product

Patent metadata

Field	Value
Publication number	US-2016130292-A1
Application number	US-201414895027-A
Country	US
Kind code	A1
Filing date	Jun 6, 2014
Priority date	Jun 6, 2013
Publication date	May 12, 2016
Grant date	—

Abstract

A fructoside-containing product is manufactured from a glucose-rich feedstock, in a process where glucose to fructose is isomerized by contacting the glucose-rich feedstock with a basic isomerization catalyst in an alcoholic medium at a temperature of at least 75° C., to yield a fructose-containing product; and where at least part of the fructose-containing product obtained therefrom is reacted with an alcohol in the presence of an acid catalyst to yield a fructoside-containing product.

First claim

1 . A process for the manufacture of a fructoside-containing product from a glucose-rich feedstock, comprising isomerizing glucose to fructose by contacting the glucose-rich feedstock in an alcoholic medium with a basic isomerization catalyst at a temperature of at least 75° C., to yield a fructose-containing product; and reacting at least part of the fructose-containing product obtained therefrom with an alcohol in the presence of an acid catalyst to yield a fructoside-containing product.

2 . The process according to claim 1 , wherein the basic catalyst is selected from the group consisting of hydrotalcite, alkali-exchanged zeolites, alkali metal and alkaline earth metal oxides and hydroxides, alkali metal alcoholates, borates, boronates and borinates, and alkali metal and alkaline earth metal carbonates and mixtures thereof.

3 . The process according to claim 1 , wherein the isomerization is conducted at a temperature of 75 to 180° C., preferably from 80 to 150° C., more preferably from 80 to 130° C.

4 . The process according to claim 1 , wherein the isomerization is conducted at a pressure of at least the autogenous pressure at the prevailing temperature, preferably from 1 to 60 bar, more preferably 2 to 25 bar.

5 . The process according to claim 1 , wherein the residence time of the glucose-rich feedstock in the alcoholic medium ranges from 0.1 to 10 hr.

6 . The process according to claim 1 , wherein the alcoholic medium in the isomerization comprises an alkanol having from 1 to 8 carbon atoms, preferably having from 1 to 4 carbon atoms, more preferably being methanol.

7 . The process according to claim 1 , wherein the alcohol with which the at least part of the fructose-containing product is reacted, is selected from C1 to C4 alkanols.

8 . The process according to claim 7 , wherein the alcohol with which the at least part of the fructose-containing product is reacted, is methanol.

9 . The process according to claim 1 , wherein the at least part of the fructose-containing product is reacted with an alcohol in the presence of an acid catalyst, selected from acidic zeolites and acidic ion exchange resins.

10 . The process according to claim 1 , wherein the at least part of the fructose-containing product is reacted with the alcohol at a temperature of 20 to 100° C., preferably from 30 to 80° C.

11 . The process according to claim 1 , wherein the contact time of the at least part of the fructose-containing product with an alcohol ranges from 0.1 to 12 hr.

12 . A process for producing a fructoside-rich product from a glucose-rich feedstock, which process comprises conducting the process for isomerizing glucose to fructose from a glucose-rich feedstock according to claim 1 in an isomerization zone to yield an isomerized product containing fructose, and reacting at least part of the isomerized product containing fructose with an alcohol in the presence of an acid catalyst in a conversion zone to yield a fructoside-containing conversion product;
wherein the glucose-rich feedstock is passed to the isomerization zone or the conversion zone;
wherein at least a fraction of the isomerized product is passed to the conversion zone and at least a fraction of the conversion product is passed to the isomerization zone; and
wherein either the isomerized product or the conversion product is split into at least two fractions, at least one fraction, i.e. the product fraction, that is split off being recovered as fructoside-rich product.

13 . The process according to claim 12 , wherein the glucose-rich feedstock is passed to the isomerization zone; substantially the entire isomerized product is passed to the conversion zone; and the conversion product is split into at least two fractions, at least one product fraction that is split off from the conversion product being recovered as fructoside-rich product, and at least another fraction of the conversion product being passed to the isomerization zone.

14 . The process according to claim 12 , wherein the glucose-rich feedstock is passed to the isomerization zone; the isomerized product is split into at least two fractions, at least one product fraction that is split off from the isomerized product being recovered as fructoside-rich product, and at least another fraction of the isomerized product being passed to the conversion zone; and substantially the entire conversion product is passed to the isomerization zone.

15 . The process according to claim 12 , wherein the glucose-rich feedstock is passed to the conversion zone; substantially the entire conversion product is passed to the isomerization zone; and the isomerized product is split into at least two fractions, at least one product fraction that is split off from the isomerized product being recovered as fructoside-rich product, and at least another fraction of the isomerized product being passed to the conversion zone.

16 . The process according to claim 12 , wherein the glucose-rich feedstock is passed to the conversion zone; the conversion product is split into at least two fractions, at least one product fraction that is split off from the conversion product being recovered as fructoside-rich product, and at least another fraction of the conversion product being passed to the isomerization zone; and substantially the entire isomerized product is passed to the conversion zone.

17 . The process according to claim 12 , wherein the split of the isomerization product or the conversion product, as the case may be, is into two fractions.

18 . The process according to claim 12 , wherein before, during or after the split of the isomerization product or the conversion product, water is removed.

19 . The process according to claim 18 , wherein water is removed by flashing, distillation adsorption or a combination thereof.

20 . The process according to claim 12 , wherein the glucose-rich feedstock comprises the reaction product of the alcoholysis of sucrose.

21 . The process according to claim 20 , wherein the alcoholysis of sucrose is carried out at a temperature ranging from 25 to 150° C., preferably, from 40 to 100° C., more preferably from 60 to 80° C.

22 . The process according to claim 12 , wherein the glucose-rich feedstock is passed to the conversion zone, which glucose-rich feedstock further comprises fructose.

23 . The process according to claim 22 , wherein the glucose-rich feedstock is HFCS.

24 . The process according to claim 12 , further comprising the step of purifying the fructoside-rich product to yield purified fructoside.

25 . The process according to claim 24 , wherein the purification comprises a dewatering step, preferably an evaporation or adsorption step.

26 . (canceled)

Assignees

• Furanix Technologies Bv

Inventors

• Mckay Benjamin
• De Sousa Dias Ana Sofia Vagueiro
• Iqbal Sarwat
• Gruter Gerardus Johannes Maria
• Van Putten Robert-Jan

Classifications

• C13K11/00

  Fructose (separation from invert sugar C13K3/00) · CPC title

• C07H3/02 Primary

  Monosaccharides · CPC title

• C07H1/00

  Processes for the preparation of sugar derivatives · CPC title

• C07H15/04

  attached to an oxygen atom of the saccharide radical · CPC title