Atmospheric low temperature spray drying device and drying method

A drying device and drying method technology, applied in the direction of drying solid materials, drying, drying machine, etc., can solve problems such as complex process, achieve the effect of high efficiency, easy cleaning, and improve the ability to carry moisture

Inactive Publication Date: 2011-12-21
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
7 Cites 13 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0006] To sum up, the current drying device generally needs to be in a vacuum or high pressure state to reach a low t...
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Method used

[0023] The gas cooling and dehumidification device structure is composed of a circulating water cooler, a surface refrigerant cooler and a rotary dehumidifier connected in series. The inlet of the circulating water cooler is connected with the air filter, and the outlet of the rotary dehumidifier is connected with the inlet of the blower. The gas cooling and dehumidi...
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Abstract

The invention discloses a normal-pressure low-temperature spray drying device and a drying method, which are composed of an air filter, a gas cooling and dehumidification device, a blower, a gas heater, a drying tower, and a cyclone separator in series, wherein the top of the drying tower An atomizing device and an air inlet are provided, and a material outlet is provided at the bottom, and the atomizing device is connected with a feed pump. The active substance extract to be dried is pumped into the drying tower, and after being atomized by the atomizing device, it exchanges mass and heat with the incoming dry air that has been added to the working temperature in the drying tower to evaporate the water into a dry powder, and then The gas enters the cyclone separator and is collected for packaging. The invention realizes low-temperature spray drying under normal pressure, and the dew point can reach -10-5°C after gas cooling and dehumidification, and the low-temperature continuous process satisfies the drying conditions of biological active substances.

Application Domain

Drying solid materialsDrying machines

Technology Topic

Image

  • Atmospheric low temperature spray drying device and drying method
  • Atmospheric low temperature spray drying device and drying method
  • Atmospheric low temperature spray drying device and drying method

Examples

  • Experimental program(2)

Example Embodiment

[0027] Example 1
[0028] The following data is measured through experiments:
[0029] The water-extracted sweet potato red pigment is spray-dried at atmospheric pressure and low temperature,
[0030] Inlet air temperature: 60-80 ℃; outlet air temperature: 30-40 ℃; material initial temperature: 11-16 ℃;
[0031] The moisture content of the dry powder is 6-8%.
[0032] At a concentration of 1%, the measured color value of the original solution is 5, and the color value after drying is 4.78.

Example Embodiment

[0033] Case study 2
[0034] Ginkgo biloba extract ginkgo flavonoids are spray-dried at normal pressure and low temperature,
[0035] Inlet air temperature: 40-70 ℃; outlet air temperature: 30-40 ℃; material initial temperature: 11-16 ℃;
[0036] The moisture content of the dry powder is 5-8%.
[0037] The flavonoid content before drying was 25.7%, and the flavonoid content after drying was 24.1%.
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Description & Claims & Application Information

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