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A method for producing crystalline fructose from sucrose

A technology for crystallizing fructose and fructose, applied in the field of sucrose production of crystallized fructose, can solve the problems of high cost, low production efficiency and high energy consumption, and achieve the effects of low cost, equipment improvement and low energy consumption

Active Publication Date: 2018-05-22
GUANGDONG SPRINGYOUNG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a method for producing crystalline fructose from sucrose, by optimizing the configuration of process parameters such as hydrolysis, decolorization, separation, chromatographic separation, evaporation concentration and crystallization in the production process, to solve the problem of Problems of high cost, high energy consumption and low production efficiency existing in the prior art

Method used

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  • A method for producing crystalline fructose from sucrose

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Effect test

Embodiment 1

[0033] 1) Pressurized hydrolysis of sucrose

[0034]Dissolve sucrose in water to obtain a sugar solution with a concentration of 55%, add it to the reaction pot and stir; open the steam valve, wait until the steam pressure in the reaction pot is 0.15Mpa, and when the temperature rises to 111°C, close the steam valve, and then add 5 % dilute hydrochloric acid, adjust the pH value of the solution to 2.5, and then keep it warm for 30 minutes. The test shows that the fructose content is >42%. It is a mixed solution of 47% fructose and glucose.

[0035] 2) Decolorization and separation

[0036] Send the mixed solution obtained in step 1) into the decolorization tank through the decolorization pump, and pump compressed air to make the sugar solution tumbling, then add an appropriate amount of activated carbon, tumbling evenly, after about 20 minutes, stop pumping compressed air, and start while it is hot Decolorization and filtration; Each decolorization tank is alternately fed an...

Embodiment 2

[0047] 1) Hydrolysis of sucrose

[0048] Dissolve sucrose in water to obtain a sugar solution with a concentration of 45%, add it to the reaction pot and stir; open the steam valve, wait until the steam pressure in the reaction pot is 0.20Mpa, and when the temperature rises to 120°C, close the steam valve, and then add 5 % dilute hydrochloric acid, adjust the pH value of the solution to 2.8, and then keep it warm for 60 minutes. The test shows that the fructose content is >42%. It is a mixed solution of 46% fructose and glucose.

[0049] 2) Decolorization and separation

[0050] With embodiment 1.

[0051] 3) Chromatographic separation: send the above fructose syrup through the flow regulating valve and high-purity water into the two sets of columns to simulate the moving bed, and automatically adjust the inlet and outlet through the automatic control system according to the temperature, pressure, flow, flow rate and other parameters in the bed The pressure of the material ...

Embodiment 3

[0056] 1) Hydrolysis of sucrose

[0057] Dissolve sucrose in water to obtain a sugar solution with a concentration of 40%, add it to the reaction pot and stir; open the steam valve, wait until the steam pressure in the reaction pot is 0.3Mpa, and when the temperature rises to 130°C, close the steam valve, and then add 5 % dilute hydrochloric acid, adjust the pH value of the solution to 3, and then keep it warm for 45 minutes. The test shows that the fructose content is >42%. It is a mixed solution of 45% fructose and glucose.

[0058] 2) Decolorization and separation

[0059] With embodiment 1.

[0060] 3) Chromatographic separation

[0061] The fructose syrup mentioned above is sent into the two sets of column simulated moving bed through the flow regulating valve and high-purity water. According to the temperature, pressure, flow rate, flow rate and other parameters in the bed, the pressure and the pressure of the inlet and outlet material pumps are automatically adjusted...

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Abstract

The invention provides a method for producing crystalline fructose from sucrose. The method sequentially comprises the following five main steps: sucrose hydrolysis, decoloration and hybridization, chromatographic separation, evaporative concentration and crystal drying. According to the method, sucrose is processed into crystalline fructose with the sugar content above 99%; by reasonably setting procedure parameters including heating and pressurizing in a sucrose dehydration process, setting a simulated moving bed in a chromatographic separation process and selecting crystal seeds in a crystallization process, the problems of high production cost and energy consumption and low production efficiency caused by defects of an existing production process are overcome; industrial mass production proves that the purity of a crystalline fructose product reaches above 99%, the average output rate of crystalline fructose prepared from the sucrose is above 42%, and a secondary product, namely high fructose syrup can be applied to the market; various different requirements are met, the sustainable development of a crystalline fructose enterprise is promoted, and the situation that imported crystalline fructose is seriously relied is changed.

Description

technical field [0001] The invention relates to the technical field of fructose production, in particular to a method for producing crystalline fructose from sucrose. Background technique [0002] Fructose is the most common ketohexose, which is a monosaccharide containing 6 carbon atoms and is an isomer of glucose. It exists in large quantities in fruit juice and honey in a free state. The fructose content is more than 2%, such as 6% in grapes and apples, and the content of honey can reach 10-20%. Therefore, fructose is completely a natural sugar sweetener, and in the field of medicine, fructose has been used by European countries. , the United States and other countries listed in the Pharmacopoeia, and made into drugs such as injections and fructose VC tablets, it is a functional health-care sugar that can replace sucrose with a wide range of uses. [0003] Crystalline fructose is a crystalline solid containing more than 95% fructose. According to the current technical l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C13K11/00
CPCC13K11/00
Inventor 邓和超徐伟雄
Owner GUANGDONG SPRINGYOUNG BIOTECH
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