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Rapid heating-atmosphere variable-weight real-time thermal analysis device and application

A thermal analysis device and atmosphere technology, applied in the field of heating experiment equipment, can solve problems such as low applicability, quality error, and inability to accurately measure the thermal burst of samples, so as to improve the scope of application and avoid quality errors

Active Publication Date: 2021-06-18
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings and deficiencies of the existing technology, a thermal analysis device and application of extremely rapid temperature rise-variable atmosphere-weight real-time are provided, which can solve the mass error caused by the vibration of the moving measurement object during the use of the device, and the thermal balance is easy Corrosion, combustion atmosphere and extremely rapid temperature rise cannot be combined in any way, resulting in low applicability and the problem that the thermal burst of the sample cannot be accurately measured

Method used

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  • Rapid heating-atmosphere variable-weight real-time thermal analysis device and application
  • Rapid heating-atmosphere variable-weight real-time thermal analysis device and application

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Experimental program
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Effect test

Embodiment 1

[0041] Turn on the power supply of the thermal analyzer, feed air from the air inlet pipe 15, remove the reaction shell 6, expose the reaction crucible 20 to the environment, open the electromagnet 22, and attract the convex type ferromagnetic material 17 due to the effect of magnetic force, making it Press the film pressure sensor 23 on the raised position, and the current pressure can be obtained through the potential difference,

[0042] By formula:

[0043] G=1000mg

[0044] Where G is the pressure (N), m is the mass (g), and g is the acceleration due to gravity (N / kg).

[0045] Calculate the zero mass.

[0046] Carry out real-time counting by computer, to return to zero weight peeling; Put into 200g Changzhi sludge then in reaction crucible 20, this moment because the increase of weight indirectly reduced electromagnet 22 to the suction force of raised type ferromagnetic material 17, thereby The pressure on the thin film pressure sensor 23 is reduced, and the weight re...

Embodiment 2

[0049] Turn on the power supply of the thermal analyzer, feed air from the air inlet pipe 15, remove the reaction shell 6, expose the reaction crucible 20 to the environment, open the electromagnet 22, and attract the convex type ferromagnetic material 17 due to the effect of magnetic force, making it Press the film pressure sensor 23 on the raised position, and the current pressure can be obtained through the potential difference,

[0050] By formula:

[0051] G=1000mg

[0052] Where G is the pressure (N), m is the mass (g), and g is the acceleration due to gravity (N / kg).

[0053] Calculate the zero mass.

[0054] Carry out real-time counting by computer, zero weight is peeled; Then in reaction crucible 20, put into 50g pyrite (FeS 2 ), this moment, because the increase in weight indirectly reduces the attraction of the electromagnet 22 to the raised ferromagnetic material 17, thereby reducing the pressure on the thin film pressure sensor 23, the weight recorded by the co...

Embodiment 3

[0057] Switch on the thermal analyzer power supply, pass into the gas distribution (21%O2) from the intake pipe 15 2 +79%CO 2 ), remove the reaction shell 6, expose the reaction crucible 20 to the environment, open the electromagnet 22, attract the raised ferromagnetic material 17 due to the magnetic force, and press the film pressure sensor 23 at the raised position, and pass the potential difference The current pressure can be obtained,

[0058] By formula:

[0059] G=1000mg

[0060] Where G is the pressure (N), m is the mass (g), and g is the acceleration due to gravity (N / kg).

[0061] Calculate the zero mass.

[0062] Carry out real-time counting by computer, zero weight is peeled; Put into 200g large grain coal gangue then in reaction crucible 20, this moment because the increase of weight has indirectly reduced the suction force of electromagnet 22 to raised type ferromagnetic material 17, Thereby reducing the pressure on the membrane pressure sensor 23, the weight...

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Abstract

The invention provides a rapid heating-atmosphere variable-weight real-time thermal analysis device and application. The thermal analysis device comprises a furnace body reaction device, a fixed protection device, a sample weighing device and an electric control device, wherein a pressure sensor is used for replacing a traditional thermobalance in the sample weighing device; so that measurement of the macroscopic sample amount (g-kg level) is achieved in combination with a movable furnace body, and mass errors caused by vibration generated by moving a measured object are avoided; meanwhile, the limitation caused by the fact that the thermobalance is prone to being corroded is overcome by adopting a corrosion-resistant material; so that any combination of various combustion atmospheres and top-speed temperature rise can be realized, and the application range is greatly widened; therefore, the thermal burst amount of the sample can be accurately measured, and an effective way is provided for the research of the later thermal burst behavior.

Description

technical field [0001] The invention relates to the field of heating experiment equipment, in particular to a thermal analysis device and application of extremely rapid temperature rise-variable atmosphere-weight real-time. Background technique [0002] Thermal analyzer is an instrument for thermogravimetric analysis and thermogravimetric differential measurement of samples. The general thermogravimetric analyzers on the market are small in size, require high precision, and measure a small amount of samples. Most of their measuring ranges are ≤100mg, which cannot meet the test requirements of large sample sizes. At present, the thermogravimetric analysis of a "big sample" with a large size and mass can only characterize its overall reaction through the mass difference before and after heating in the tube furnace, but cannot understand its real-time reaction during the heating process. There are certain limitations. Due to the restriction of the sample size and the limitati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/26
CPCG01N25/26Y02E30/30
Inventor 张圆圆任磊杨凤玲程芳琴张锴
Owner SHANXI UNIV
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