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A kind of preparation method of micro-nano granulation

A micro-nano and granulation technology, applied in microsphere preparation, microcapsule preparation, powder suspension granulation and other directions, can solve the problems of unstable embedding effect, complex structure and variability, etc., to improve drying efficiency, preparation Simple process and stable contents

Active Publication Date: 2021-05-18
HANGZHOU XINWEI LOW CARBON TECH R&D
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the spray drying granulation method can be divided into the traditional single-stage spray drying granulation system and the more complex multi-stage spray drying granulation system. The traditional single-stage spray drying granulation system adopts the airflow design of upper air inlet and lower air exhaust. There are problems such as difficult control of drying effect, uneven distribution of product particle diameter, unstable embedding effect, and difficulty in controlling dust pollution. However, the more complex multi-stage spray drying granulation system solves the problems of some single-stage spray drying granulation systems. It can better control the particle diameter and drying stability. However, it also has defects such as bulky size, complex structure, high energy consumption, and variability of materials after passing through multiple drying equipment.

Method used

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Experimental program
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Effect test

specific Embodiment

[0023] Such as Figure 1-2 Shown is a specific embodiment of a micro-nano-scale granulation preparation method, the preparation method includes the following steps:

[0024] Step 1): Add the material into the emulsification chamber at a speed of 1kg / h, stir and emulsify at a speed of 30rpm for 20min, then place it under a pressure of 1Mpa, and shear and homogenize for 30min to obtain a material emulsion;

[0025] Step 2): Filter the material emulsion obtained in step 1) through a biofilm with a filter pore size of 1um to obtain a micronano-scale emulsion. If the material emulsion passes through the biofilm filter pore size, enter step 3), otherwise, fail The droplets with the pore size of the biofilm are returned to the pipeline under the pressure of 1Mpa to continue shearing and homogenization, and then filtered through the biofilm with a filter pore size of 1um to obtain a micro-nano emulsion;

[0026] Step 3): Add the micronano emulsion obtained in step 2) into the multi-s...

Embodiment 2

[0031] Such as Figure 1-2 Shown is a specific embodiment of a micro-nano-scale granulation preparation method, the preparation method includes the following steps:

[0032]Step 1): Add the material into the emulsification chamber at a speed of 250kg / h, stir and emulsify at a speed of 1015rpm for 40min, and then place it under a pressure of 10.5Mpa, shear and homogenize for 60min to obtain a material emulsion;

[0033] Step 2): Filter the material emulsion obtained in step 1) through a biofilm with a filter aperture of 250um to obtain a micronano-scale emulsion. If the material emulsion passes through the filter aperture of the biofilm, enter step 3), otherwise, fail The droplets with the pore size of the biofilm flow back through the pipeline to the pressure of 10.5Mpa to continue shearing and homogenization, and then filter through the biofilm with a filter pore size of 250um to obtain a micro-nano emulsion;

[0034] Step 3): Add the micronano-scale emulsion obtained in ste...

Embodiment 3

[0039] Such as Figure 1-2 Shown is a specific embodiment of a micro-nano-scale granulation preparation method, the preparation method includes the following steps:

[0040] Step 1): Add the material into the emulsification chamber at a speed of 500kg / h, stir and emulsify at a speed of 2000rpm for 35min, and then place it under a pressure of 20Mpa, shear and homogenize for 30min to obtain a material emulsion;

[0041] Step 2): Filter the material emulsion obtained in step 1) through a biofilm with a filter aperture of 500um to obtain a micronano-scale emulsion. If the material emulsion passes through the filter aperture of the biofilm, enter step 3), otherwise, fail The droplets with the pore size of the biofilm flow back through the pipeline to the pressure of 20Mpa to continue shearing and homogenization, and then filter through the biofilm with a filter pore size of 500um to obtain a micro-nano emulsion;

[0042] Step 3): Add the micronano emulsion obtained in step 2) into...

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Abstract

The invention discloses a micro-nano-scale granulation preparation method, which adopts a combination of stirring emulsification, shear homogeneity and biofilm filtration to obtain a nano-scale material emulsification system, and uses a mixed airflow of upper air intake and upper exhaust air to carry out spray drying. Granules, and then use the new integrated fluidized bed drying and granulation of three temperature zones, which improves the drying efficiency and reduces the particle diameter. It has energy saving and environmental protection, high flexibility, simple preparation, low cost, green and pollution-free, etc. technical features.

Description

technical field [0001] The invention relates to a granulation method, more specifically, to a micro-nano granulation method. Background technique [0002] Spray drying granulation technology is widely used in food, medicine, chemical industry and other fields. At present, the spray drying granulation method can be divided into the traditional single-stage spray drying granulation system and the more complicated multi-stage spray drying granulation system. The traditional single-stage spray drying granulation system adopts the airflow design of the upper air inlet and the lower air exhaust There are problems such as difficult control of drying effect, uneven distribution of product particle diameter, unstable embedding effect, and difficulty in controlling dust pollution. However, the more complicated multi-stage spray drying granulation system solves the problems of some single-stage spray drying granulation systems. The problem is that it can better control the particle di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J2/04B01J2/16B01J13/04
CPCB01J2/04B01J2/16B01J13/043
Inventor 杨宗鑫林元奎周敏
Owner HANGZHOU XINWEI LOW CARBON TECH R&D
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