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Method for drying wet D-ribose crystal

A ribose and crystallization technology, applied in chemical instruments and methods, monosaccharides, sugar derivatives, etc., to achieve the effect of quality assurance

Active Publication Date: 2014-04-23
SHANDONG FOOD & FERMENT IND RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the shortcomings of the moisture-containing D-ribose crystallization drying process in the current D-ribose production process, the present invention provides an implementation method for the moisture-containing D-ribose crystallization obtained from the separation and extraction of the fermentation broth in the process of microbial transformation to produce D-ribose. drying method

Method used

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  • Method for drying wet D-ribose crystal

Examples

Experimental program
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Effect test

Embodiment 1

[0034] refer to figure 1 Schematic diagram of drying process and equipment connection for wet D-ribose crystallization, the ambient temperature is 25°C, and the relative air humidity is 40%.

[0035] A method for drying the wet D-ribose crystals obtained from the separation and extraction of the fermentation broth, the steps are:

[0036] (1) Use the primary filter to preliminarily remove impurities from the air to be dried, then use an air compressor to compress the air to 0.7MPa, then use a cooler to reduce the air to 30°C, and use a cyclone separator to remove the condensed oil in the air and water removal;

[0037] (2) Use a cold dryer and control the pressure dew point temperature of the cold dryer to 3°C, further cool down and condense the compressed air obtained in step (1), remove oil and water, and obtain dehumidified air;

[0038] (3) Adjust the air pressure after dehumidification (step 2) to 6.0KPa through the regulating valve, and then heat the depressurized air ...

Embodiment 2

[0044] The basic steps are the same as in Example 1, the ambient temperature is 33°C, and the relative air humidity is 60%.

[0045] Different from embodiment 1 in the step is:

[0046] Use an air compressor to compress the air to 0.6MPa, and then use a cooler to lower the air to 35°C;

[0047] Use a cold dryer and control the pressure dew point temperature of the cold dryer to 2°C;

[0048] Adjust the dehumidified air pressure to 5.0KPa through the regulating valve, then heat the depressurized air to 45°C through the heater, and then filter through the two-stage filter to obtain an almost dry temperature with a relative humidity of only 1.7%. Hot, clean, dry air.

[0049] Centrifuge solid-liquid separation to obtain D-ribose wet crystals 350kg, moisture content 6.5%. Wet crystals of D-ribose are fed into the drying column at a uniform speed from the feeder, and fully contact with dry air (the mixing ratio of air and wet D-ribose crystals is expressed in m 3 : Kg is 6:1), ...

Embodiment 3

[0052] The basic steps are the same as in Example 1, the ambient temperature is 36°C, and the relative air humidity is 70%.

[0053] Different from embodiment 1 in the step is:

[0054] Use an air compressor to compress the air to 0.5MPa, and then use a cooler to lower the air to 40°C;

[0055] Use a cold dryer and control the pressure dew point temperature of the cold dryer to 4°C;

[0056] Adjust the dehumidified air pressure to 5.5KPa through the regulating valve, and then heat the depressurized air to 50°C through the heater.

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Abstract

The invention discloses a method for drying wet D-ribose crystal separated and extracted from fermentation liquor in the microbial conversion production process of D-ribose. The method comprises the following steps: efficiently dehumidifying air for drying by adopting air compression and freeze drying in a combined way; performing pressure regulation, filtering purification and heater heating on the dehumidified air; inputting into an air current drying device and fully mixing with a wet D-ribose crystal material to realize drying of a product. In the drying method implemented according to the invention, negative influences of high-temperature and high-humidity ambient air on drying of the D-ribose crystal are avoided, effective drying of the wet D-ribose crystal is realized, the quality of finished D-ribose crystal is ensured, and the problems in the drying procedure in the current D-ribose crystal production are solved.

Description

technical field [0001] The present invention relates to a drying method for wet D-ribose crystals, in particular to a drying method for wet D-ribose crystals obtained from fermentation broth during the production of D-ribose by microbial transformation, belonging to Biochemical field. Background technique [0002] D-ribose (D-ribose) is a five-carbon sugar, which is a component of the genetic material ribonucleic acid (RNA), deoxyribose nucleic acid (DNA) and several coenzymes and vitamins in organisms, in nucleosides, proteins, fats It is in the pivotal position in metabolism, has important physiological functions, and has a wide range of uses in food, medicine, cosmetics and other fields. In addition, as an energy source, D-ribose can improve the ATP level in the body, promote the recovery of ischemic tissue and hypoxic tissue, and can be used as an auxiliary drug for the treatment of cardiovascular diseases. [0003] At present, the preparation methods of D-ribose mainl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H3/02C07H1/06
Inventor 张家祥刘建军赵祥颖田延军杨丽萍韩延雷
Owner SHANDONG FOOD & FERMENT IND RES & DESIGN INST
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