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Method for simulating instantaneous temperature of microwave pyrolysis biomass and biochar mixing sample

An analog method and transient temperature technology, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve beautiful and clear temperature gradient display, easy operation, and simple methods

Active Publication Date: 2016-08-17
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a simulation method for the transient temperature of a sample of microwave pyrolysis biomass and biochar mixed, which is used to solve the prior art only for a single material simulation method, without the problem of modeling methods for mixed samples

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  • Method for simulating instantaneous temperature of microwave pyrolysis biomass and biochar mixing sample
  • Method for simulating instantaneous temperature of microwave pyrolysis biomass and biochar mixing sample
  • Method for simulating instantaneous temperature of microwave pyrolysis biomass and biochar mixing sample

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Effect test

Embodiment 1

[0044] The raw material of rice straw was pulverized into 80-mesh granules with a pulverizer in advance, and then sent to a blower dryer, and dried under heating at 105°C until the moisture content was 0.4%. Put the dried rice straw in N 2 Pyrolysis in the atmosphere, and using the HewlettPackard 8753C vector network analyzer to obtain the dielectric properties-temperature curve profile of the rice straw at a frequency of 2.45GHz; put the rice straw carbon in N 2 Pyrolysis in the atmosphere, and using Hewlett Packard 8753C vector network analyzer to obtain the dielectric property-temperature curve profile of the rice straw carbon at a frequency of 2.45GHz. Rice straw and rice straw carbon are mixed according to the mass ratio of 6:1 to form a mixed sample, according to the mass ratio of the rice straw to the rice straw carbon in the mixed sample, the dielectric property-temperature curve profile of the rice straw and The dielectric property-temperature curve profile of the ri...

Embodiment 2

[0047] The chipped sawdust raw material is pulverized into 80-mesh particles in advance with a pulverizer, and then sent to a blast dryer, and dried under heating at 105°C until the moisture content is 0.3%. Place the dried wood chips in N 2 Pyrolysis in the atmosphere, and utilize Hewlett Packard8753C vector network analyzer to obtain the dielectric property-temperature curve of described sawdust under 2.45GHz frequency; Biochar is placed in N 2 Pyrolyze in the atmosphere, and use Hewlett Packard 8753C vector network analyzer to obtain the dielectric property-temperature curve profile of the biochar at a frequency of 2.45GHz. Wood chips and biochar are mixed according to a mass ratio of 8:1 to form a mixed sample, according to the mass ratio of wood chips and biochar in the mixed sample, the dielectric property-temperature curve profile of the wood chips and The dielectric property-temperature curve profile of the biochar is obtained by obtaining the dielectric property-temp...

Embodiment 3

[0050] The lignite raw material is pulverized into 60-mesh particles in advance with a pulverizer, then sent to a blast dryer, and dried under heating at 105°C until the moisture content is 0.2%. Put the dried lignite in N 2 Pyrolysis in the atmosphere, and utilize Hewlett Packard 8753C vector network analyzer to obtain the dielectric property-temperature curve profile of described lignite at 2.45GHz frequency; Activated carbon is placed in N 2 Pyrolysis in the atmosphere, and using Hewlett Packard 8753C vector network analyzer to obtain the dielectric property-temperature curve of the activated carbon at a frequency of 2.45GHz. Lignite and activated carbon are mixed according to a mass ratio of 5:1 to form a mixed sample, according to the mass ratio of the lignite to the activated carbon in the mixed sample, the dielectric property-temperature curve profile of the lignite and the activity Carbon Dielectric Properties-Temperature Profile The dielectric properties-temperature ...

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Abstract

The invention provides a method for simulating an instantaneous temperature of a microwave pyrolysis biomass and biochar mixing sample. The method comprises the following steps of: (1) respectively obtaining a dielectric property-temperature curve profile of biomasses and biochar corresponding to the biomasses; (2) obtaining a dielectric property-temperature curve profile of a biomass and biochar mixing sample in a pyrolysis process; (3) establishing a microwave pyrolysis system geometric model; (4) establishing an electromagnetic field and electromagnetic loss model of the microwave pyrolysis system geometric model; (5) establishing a heat distribution model of a mixing sample model in the pyrolysis process; and (6) meshing the electromagnetic field and electromagnetic loss model and the heat distribution model, obtaining a 3D (three-dimensional) distribution diagram of an electromagnetic field and an electromagnetic loss of the microwave pyrolysis system geometric model and a 3D distribution diagram of the temperature of the mixing sample model under microwave radiation by using a distributed algorithm. The method provided by the invention is simple and easy to operate, and capable of highly simulating the 3D distribution diagram of the temperature of the biomass and biochar mixing sample model under microwave radiation.

Description

technical field [0001] The invention belongs to the technical field of microwave pyrolysis, and relates to a method for simulating the transient temperature of a mixed sample of microwave pyrolysis biomass and biochar. Background technique [0002] Microwave heating is an internal heating method, which is a process of energy conversion. This process requires at least one component in the material to be strongly coupled with microwaves, that is, as a microwave absorber to efficiently absorb microwaves and convert electromagnetic energy into thermal energy. Compared with traditional heating methods, it can realize rapid heating and selective heating. But because of this feature, and because of the heat loss caused by the limited heat dissipation inside the material and the temperature difference between the outside and the surrounding objects, the internal temperature is higher than the outside, and a temperature gradient appears. The inside of the material can reach the des...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23G06F2119/08
Inventor 孙予罕孙晓妹唐志永孔令照祝贺罗虎鲍利伟谭智超
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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