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Method and device for auxiliary control of properties of spray-dried powder

An auxiliary control and drying powder technology, which is applied in the direction of spray evaporation, evaporator accessories, etc., can solve the problem of large size and it takes a certain time to achieve it.

Inactive Publication Date: 2015-09-16
姜冬英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many cases, these control methods cannot or are inconvenient to meet the requirements. For example, due to the large difference between the outdoor temperature and the internal temperature of the spray dryer when the spray dryer is running, it takes a certain amount of time to reach the equilibrium state. The parameters of the control system are the same, but the performance of the powder is constantly changing. In addition, when the ambient temperature is very low, even if the parameters such as the highest air inlet temperature are adjusted, the powder with a high moisture content will often be obtained.

Method used

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  • Method and device for auxiliary control of properties of spray-dried powder

Examples

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Effect test

Embodiment 1

[0023] like figure 1 Shown is an auxiliary device for controlling the performance of the spray-dried powder in the resistance heating mode. The slurry enters the heating vessel 100 from the side of the heating vessel 100, and the resistance heater 201 is an electric heating rod installed in the center of the heating vessel 100 along the axial direction. The heater 201 is used to heat the slurry, the resistance heater 201 is connected with the power device 202, and a temperature sensor 104 is arranged at the discharge end of the heating container 100, and the temperature sensor 104 is connected with the temperature controller 103, and the temperature controller 103 is connected with the power device 202 connect. During operation, the temperature controller 103 controls the heating power of the power device 202 according to the set slurry temperature and the actual slurry temperature measured by the temperature sensor 104 to obtain the required slurry temperature.

[0024] The ...

Embodiment 2

[0029] like figure 2 Shown is an auxiliary device for controlling the performance of the spray-dried powder in the electromagnetic heating mode. The slurry enters the heating container 100 from the lower end of the heating container 100. The electromagnetic heating coil 101 is arranged outside the heating container 100. The electromagnetic heating coil 101 and the electromagnetic heating control The temperature sensor 104 is set at the discharge end of the heating vessel 100, the temperature sensor 104 is connected with the temperature controller 103, and the temperature controller 103 is connected with the electromagnetic heating controller 102. The heating power of the electromagnetic heating controller 102 is controlled according to the slurry temperature and the actual slurry temperature measured by the temperature sensor 104 so as to obtain the required slurry temperature.

[0030] The electromagnetic heating technology is an existing public technology and will not be de...

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Abstract

The invention relates to a method and device for auxiliary control of properties of a spray-dried powder; the method comprises before slurry goes into an atomizer of a spray dryer, an on-line heating device is arranged, and the properties of the spray-dried powder are auxiliarily controlled through on-line control of the spraying slurry temperature. The method can adjust the particle size, morphology, water content and other properties of the powder, and increases a convenient and effective way for control of the properties of the spray-dried powder. The device comprises a heating container, a heating device, a temperature sensor and a temperature controller.

Description

technical field [0001] The invention relates to the preparation of powder by a spray drying method, which is used in the field of spray drying technical equipment, and further relates to an auxiliary control method for the performance of powder prepared by spray drying technology. Background technique [0002] Spray drying is a drying method often used in industrial production. The slurry is atomized into fine droplets through an atomizer, dehydrated and dried into a powder with a certain moisture content and particle size under the action of hot air, and is widely used in materials, food, Pharmaceutical, chemical and other industries. The performance indicators of the powder include moisture content, particle size, particle size distribution, particle morphology, etc. Common methods for controlling powder properties in existing spray drying equipment include inlet air temperature, outlet air temperature, nozzle size, atomizer speed, feed speed, feed pressure, etc. In many...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/18B01D1/30
Inventor 姜冬英
Owner 姜冬英
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