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Microwave thermogravimetric analysis system

A technology of reaction analysis and microwave heating chamber, applied in the direction of weighing by removing certain components, preparation of test samples, etc., can solve the problem of inability to directly measure the real-time change value of the weight of the reaction material and affect the in-depth analysis of the microwave pyrolysis reaction mechanism , parameter detection and control are not very accurate, etc., to achieve the effect of simple structure, low cost, and small temperature fluctuation

Pending Publication Date: 2018-09-04
JIANGSU UNIV
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Problems solved by technology

[0003] At present, for pyrolysis chemical reactions, the experimental devices designed by some invention patents have relatively simple functions, and the detection and control of parameters in the experimental process are not very accurate, which may affect the experimental results.
Most of the microwave pyrolysis reactions of organic wastes carried out by microwave technology are carried out on improved household microwave ovens. These microwave pyrolysis devices mainly have the following problems: 1. Inaccurate temperature measurement and control; 2. It is impossible to directly measure the real-time change value of the weight of the reaction material during the pyrolysis of organic waste, and it is impossible to analyze the thermal decomposition behavior and reaction kinetics of it in combination with the measured temperature change, which affects the understanding of the microwave pyrolysis reaction mechanism In-depth analysis

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Embodiment Construction

[0037] A microwave thermogravimetric reaction analysis system, the schematic diagram of which is shown in figure 1 , the schematic diagram of the reactor is shown in image 3 : The reaction analysis system is to open two holes in the middle of the upper wall of the heating chamber 1 of the microwave pyrolysis device. The oval openings are used to extend into the oval quartz tube 8 placed in the microwave heating chamber 1, and the oval quartz tubes The thermocouple temperature sensor 4 is inserted into the tube 8; the circular opening extends into the short cylindrical quartz tube 9, and the frosted outer interfaces of the oval quartz tube 8 and the cylindrical short quartz tube 9 are respectively placed on the circular tray 2 The two ports on the upper end of the quartz flask reactor 3 are connected. The opening of the left side wall of the microwave heating chamber 1 stretches into a cylindrical long quartz tube 10 and is connected with the quartz flask reactor 3 to ensure ...

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Abstract

The invention relates to the technical field of microwave pyrolysis , and especially relates to a microwave thermogravimetric analysis system. The analysis system includes a thermocouple temperature sensor, a gravity sensor, a control circuit, a display module, a chemical reaction system material pyrolysis part, a subsidiary part, a magnetron and a computer. The microwave power in the invention isadjustable, reaction temperature and weight change data in the microwave pyrolysis process of a material are highly precisely measured, thermogravimetric analysis and reaction kinetics analysis of the microwave pyrolysis reaction of the material are performed, a chemical reaction module is externally connected to realize the condensation separation of a product and catalyst refining and upgrading, and other analytical instruments also can be externally connected to achieve the mechanism analysis of the pyrolysis reaction of the material.

Description

technical field [0001] The invention relates to the technical field of microwave pyrolysis, in particular to a thermogravimetric analysis for microwave pyrolysis of organic matter and its reaction kinetics and mechanism analysis. Background technique [0002] Microwave is a high-frequency wave. When microwave is used to heat a substance, the molecules of the heated substance vibrate in the high-frequency magnetic field, and the molecules collide and rub against each other to generate heat energy, which increases the temperature of the heated substance. The heat transfer is by the molecules. Internal to external transfer, based on the characteristics of microwaves, the use of microwave pyrolysis of organic waste such as biomass, waste plastics and other technologies has attracted more and more attention. Due to the non-renewability of fossil energy and the high price, the demand for alternative renewable fuel resources is becoming stronger and stronger. The output of organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N1/44
CPCG01N1/44G01N5/04
Inventor 卜权刘圆源毛罕平龙海蓉徐志祥
Owner JIANGSU UNIV
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