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Method for sample defoaming in thermal analysis test

A technology of test process and thermal analysis, applied in the direction of material thermal analysis, material analysis, foam dispersion/prevention, etc., can solve problems such as affecting the experimental results, and achieve the effect of convenient and simple operation, low cost and safe operation

Inactive Publication Date: 2013-11-13
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the addition of the above substances will affect the experimental results, or will decompose during the thermal process to produce substances that affect the experimental results

Method used

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  • Method for sample defoaming in thermal analysis test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Put an oil sample 1 with a mass of 15 mg into a thermal analysis crucible 1 . After the thermal analysis of the oil sample, the reactants bubbled a lot and overflowed out of the crucible 1, which affected the experimental results and seriously polluted the experimental instruments.

Embodiment 3

[0029] Put oil sample 2 with a mass of 15 mg into thermal analysis crucible 1 . After the thermal analysis of the oil sample, the reactant foamed slowly during the pyrolysis process, the inner wall was completely blackened, and the outside of the top was also dipped. The experimental results were affected, and the pollution to the testing equipment was relatively light, but the scope of the pollution wider.

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Abstract

The invention discloses a method for sample defoaming in a thermal analysis test. The method comprises the following steps of 1, filling a sample to be analyzed into a crucible, 2, selecting a corresponding mass ratio of defoaming powder to the sample to be analyzed, and size distribution of the defoaming powder according to the distribution of foam of the sample to be analyzed in the crucible used for thermal analysis in a reaction, and the sizes of the foam, and 3, uniformly paving the defoaming powder on an oil sample surface of the sample to be analyzed to cover the whole oil sample surface so that in analysis, the produced foam layer is torn, deforms and is broken in flowing in and passing through defoaming powder gaps. The method for sample defoaming can realize deformation and breaking of foam in flowing in and passing through the defoaming powder gaps so that defoaming is realized. Alumina and quartz powder subjected to high-temperature treatment have no pollution and can produce very small influence on an experiment result.

Description

technical field [0001] The invention relates to the field of thermal analysis in the energy industry, in particular to a method for defoaming a sample during a thermal analysis test. Background technique [0002] Thermal analysis refers to the method of analyzing the relationship between thermodynamic parameters or physical parameters with temperature. A series of relatively mature thermal analysis methods including TG and DSC can quantitatively study thermal decomposition, thermodynamic properties and physical and chemical energy change trends during the process of temperature change, providing the following for scientific research and chemical engineering simulation. Determine product quality and scope of use. At present, thermal analysis has been widely used in the research fields of biomass, coal, polymer materials and petroleum raw materials pyrolysis process. [0003] During the thermal analysis of carbonaceous macromolecular samples, the volatilization of light comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04G01N25/00
Inventor 陈坤周莹刘进东林存辉汤一强王宗贤郭爱军
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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