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Method and device for microwave continuous heating sterilization of solid materials

A technology of heat sterilization and microwave heating, which is applied in food science, food preservation, application, etc., and can solve problems such as complex processes

Inactive Publication Date: 2010-04-07
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the case of high requirements for heat sterilization of solid materials or complex related processes, the existing microwave sterilization technology has certain limitations

Method used

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  • Method and device for microwave continuous heating sterilization of solid materials
  • Method and device for microwave continuous heating sterilization of solid materials
  • Method and device for microwave continuous heating sterilization of solid materials

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Experimental program
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Effect test

Embodiment 1

[0024] The device for microwave continuous heating and sterilization of solid materials is composed of multiple single-stage devices and steam generators (18), wherein the single-stage device for microwave continuous sterilization of solid materials consists of a feed inlet (1), a cock type continuous feed Material sealing valve (2), tubular screw propeller (8), microwave heating chamber (10), discharge port (14), cock type continuous discharging sealing valve (16), temperature sensor (15), pressure sensor ( 11) Composition; the pressure and temperature sensors are installed at the connection between the stages of the microwave heating outdoor tubular screw propeller.

[0025] The feed port and discharge port of the cock type continuous feed and discharge sealing valve (2) are not connected to each other when they are opened, and can simultaneously complete the continuous feed and discharge of solid materials while maintaining the effective working air pressure in the device. ...

Embodiment 2

[0029] The special device for microwave continuous heating and sterilization of solid materials is composed of multiple single-stage devices and steam generators, which are the same as the above-mentioned embodiments, wherein the microwave heating chamber can be used in series by multiple low-power resonant cavities. The specific microwave heating Chamber design is determined by relevant process parameters. In addition, the heating chamber must be able to work continuously for a long time, and its power can be accurately adjusted online.

Embodiment 3

[0031]After the solid material to be sterilized is preheated with hot air, it is continuously fed into the screw propeller (8) from the feed port (1) through the cock type continuous feeding sealing valve (2), and is stirred along the long axis of the screw propeller And pushed forward, the material is heated according to the process requirements when passing through the microwave heating chamber (10). Heating the stage-to-stage junctions of outdoor tubular auger propellers. The material is conveyed from the previous stage to the next stage by the screw propeller, and the material is further heated to the sterilization temperature by the microwave in the next stage. The temperature and ambient pressure of the material at this stage are also monitored and controlled online by the temperature sensor and the pressure sensor between the stages. The material is further conveyed to the next stage by the screw propeller. In this stage, the microwave heating power is reduced, mainly t...

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Abstract

The invention discloses a method and a device thereof for microwave continuous heating sterilization of solid materials, the device adopts a screw plug type continuous feed sealing valve and a screw plug type continuous discharge sealing valve for running with pressure and carrying out operations of feeding and discharging the solid materials and realizes the multi-level microwave continuous heating sterilization of the solid materials, the temperature of the solid materials is increased to be higher than 120 DEG C and lower than the temperature for pyrolysis or coking of the materials by microwave heating, steam with pressure is adopted during the process of the microwave sterilization of the solid materials, the pressure of the steam is 0.1017MPa-1.0015MPa, the working pressure of the microwave heating environment is stabilized, and the continuous heating sterilization treatment of the solid materials containing water can be realized.

Description

technical field [0001] The method and device for microwave continuous heating and sterilization of solid materials relate to the technical field of microwave continuous heating and sterilization of solid materials in biological engineering, chemical industry, food and environmental engineering. Background technique [0002] At present, in many fields such as food, pharmaceuticals, agricultural and sideline products processing, brewing, organic waste treatment, solid-state fermentation, chemical industry, manufacturing industry, etc., the problem of heating and sterilization of solid materials is often encountered. Compared with traditional steam heating and sterilization, microwave heating and sterilization of granular, powdery and other aqueous solid materials can significantly shorten the sterilization time. It has many advantages such as simple equipment, low energy consumption, easy operation and easy automation. There is no environmental pollution problem. When microwa...

Claims

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Application Information

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IPC IPC(8): A61L2/12A23L3/01
Inventor 王皓计巧灵王卫国
Owner XINJIANG UNIVERSITY
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