Production technique of xylose

A production process and technology of xylose, applied in the production of sugar, sugar production, xylose production and other directions, can solve the problems of slow corncob hydrolysis, large waste water discharge, serious environmental pollution, etc., and achieve shortened contact and soaking. Time, high recycling efficiency, and the effect of simplifying the process flow

Inactive Publication Date: 2016-06-29
HARBIN YOULI XYLITOL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of sulfuric acid hydrolysis in this process, a large amount of sulfate ions are contained in the xylose hydrolyzate and the discharged wastewater, which has a great inhibitory effect on the anaerobic bacteria in the wastewater treatment. According to the test verification, every mole of sulfuric acid contained Root ions can inhibit the activity of ten moles of anaerobic bacteria, making the wastewater difficult to treat
At the same time, when the corn cob is hydrolyzed, because the whole piece of corn cob is put into the hydrolysis kettle, the corn cob particles are relatively large, which leads to the slow speed of the catalyst acid solution penetrating into the inside of the corn cob, resulting in slow hydrolysis of the corn cob, and the hydrolysis is not good. Thorough, low production efficien...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The production process steps of this xylose are as follows:

[0032] 1) Crushing: Take 1000kg of corncob after dust removal and impurity removal, transfer it into a universal crusher, start the motor, adjust the frequency conversion power to 50Hz, crush the corncob to 2cm, and set aside;

[0033] 2) High-temperature water cooking: introduce the crushed corncob into the high-temperature water cooking tank, add evaporative condensed water at 1:5 of the dry weight of the corncob, turn on the stirring device, control the stirring speed to 100 rpm, and heat up with steam After reaching 80 °C and keeping the temperature for 3 hours, it is sent to the crawler-type solid-liquid separator for solid-liquid separation. The separated high-temperature cooking liquid enters the sedimentation tank, and the supernatant liquid is used for corncob pretreatment outside the tank to save industrial water resources. ; The separated high-temperature cooking slag enters the hydrolysis kettle f...

Embodiment 2

[0041] The production process steps of this xylose are as follows:

[0042] 1) Grinding: Take 800kg of corn cobs after dedusting and impurity removal, transfer them to the universal grinder, start the motor, adjust the frequency conversion power to 35Hz, and grind the corn cobs to 3cm for later use;

[0043] 2) High-temperature water cooking: import the crushed corncobs into a high-temperature water cooking tank, add evaporative condensed water at a ratio of 1:10 of the dry weight of corncobs, and turn on the stirring device, control the stirring speed to 10 rpm, and use steam to raise the temperature After reaching 110°C and keeping warm for 1 hour, it is sent to a plate and frame filter for solid-liquid separation. The separated high-temperature cooking liquid enters the settling tank, and its supernatant is used for pretreatment of corn cobs outside the tank to save industrial water resources; separation The final high-temperature cooking slag enters the hydrolysis kettle f...

Embodiment 3

[0051] The production process steps of this xylose are as follows:

[0052] 1) Crushing: Take 900kg of corn cobs after dust removal and impurity removal, transfer them to the universal grinder, start the motor, adjust the frequency conversion power to 40Hz, and grind the corn cobs to 2.5cm for later use;

[0053] 2) High-temperature water cooking: import the crushed corncobs into a high-temperature water cooking tank, add evaporative condensed water according to 1:8 of the dry weight of corncobs, and turn on the stirring device, control the stirring speed to 50 rpm, and use steam to raise the temperature After heating at 95°C for 2 hours, it is sent to a drum centrifuge for solid-liquid separation. The separated high-temperature cooking liquid enters a settling tank, and its supernatant is used for pretreatment of corncobs outside the tank to save industrial water resources; The separated high-temperature cooking slag enters the hydrolysis kettle for hydrolysis operation;

[...

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Abstract

The invention discloses a production technique of xylose. The production technique comprises the following steps: pulverizing, boiling with high-temperature water, hydrolyzing, decolorizing, refining, carrying out continuous film concentration, carrying out steam vaporization concentration, crystallizing, centrifuging and drying, thereby finally obtaining the crystalline xylose finished product. The xylose mother solution is sold as the byproduct and used as the raw material for preparing the caramel pigment product. The corn cobs are pulverized, thereby increasing the specific area, shortening the contact and soak time, enhancing the hydrolysis efficiency, and increasing the xylose yield. The hydrochloric acid is used for hydrolyzing the corn cobs to prepare the xylose, thereby saving the subsequent decolorant consumption, and reducing the environmental pollution. The continuous film concentration technique is adopted to partially substitute the steam vaporization technique, thereby having favorable energy-saving effect. The technique has the advantages of high waste acid/alkali recovery efficiency and favorable effect, and can save the acid/alkali consumption. The technique simplifies the technical process, shortens the production cycle, enhances the production efficiency, lowers the xylose production cost and reduces the wastewater emission.

Description

technical field [0001] The invention relates to the technical field of functional sugar production, in particular to a production process of xylose. Background technique [0002] Xylose products are white crystals or crystalline powders, sweet in taste, and the sweetness is equivalent to 70% of sucrose. It has no energy value and cannot provide heat for the human body. It has a high value-added effect on Bifidobacterium in the human intestine and can improve the The micro-ecological environment of the human body improves the immunity of the body. Xylose products are mainly used for the preparation of xylitol, which is widely used in food processing, beverage addition, pet food preparation, etc. It can also be used as a flavor improver for meat food and grain products, as well as for the preparation of meat flavors and high-grade soy sauce colors. Raw materials have important functions and effects on improving and improving people's quality of life. [0003] The traditional...

Claims

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Application Information

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IPC IPC(8): C13K13/00
CPCC13K13/002
Inventor 那立秋
Owner HARBIN YOULI XYLITOL TECH CO LTD
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