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Method and device for testing burning rate of carbonaceous heat source

A technology of carbonaceous heat source and testing method, which is applied in the direction of using combustion for chemical analysis, etc., can solve the problems of lack of evaluation of the combustion rate of carbonaceous heat source, achieve high test efficiency, improve test efficiency, and simple device structure

Inactive Publication Date: 2015-09-09
CHINA TOBACCO ANHUI IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, some patents have been reported on the evaluation methods of the combustion heat of carbonaceous heat sources. For example, CN1100453A proposes to use scanning differential thermal analysis (DSC) and infrared spectrometer (FTIR) to measure the combustion heat release of carbonaceous heat sources respectively. and CO emission, CN101420876A proposes the measurement method of the ignition time of carbonaceous heat source, and CN102458165A proposes the test method of ignition rate, but lacks the means of evaluating the combustion rate of carbonaceous heat source

Method used

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  • Method and device for testing burning rate of carbonaceous heat source
  • Method and device for testing burning rate of carbonaceous heat source
  • Method and device for testing burning rate of carbonaceous heat source

Examples

Experimental program
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Effect test

Embodiment 1

[0023] In this embodiment, the measuring device such as figure 1 shown, which includes:

[0024] A glass container 6 is set, and a layer of 3-5cm thick glass beads 7 is laid on the bottom of the glass container 6, so that the nitrogen-oxygen mixture fed from the bottom flows evenly upwards; on the side of the glass container 6 A spline holder 8 is arranged on the wall to fix the carbonaceous heat source spline 9; the top of the glass container 6 has an opening for discharging the nitrogen-oxygen mixture.

[0025] The diameter of the glass microspheres 7 is 1-2mm. The flow rate of the nitrogen-oxygen mixture is adjusted to 10L / min by the nitrogen-oxygen mixture flowmeter 5; the flow ratio of nitrogen and oxygen in the nitrogen-oxygen mixture is adjusted by the nitrogen gas flowmeter 3 and the oxygen flowmeter 4. The free end of the carbonaceous heat source spline 9 fixed on the spline holder 8 is vertically upward, vertically downward or any angle in the middle.

[0026] The...

Embodiment 2

[0032] Embodiment 2: This embodiment is to investigate the influence of oxygen content on the combustion rate of carbonaceous heat source

[0033] Utilize the carbonaceous heat source sample bar among the embodiment 1, test method is unchanged, difference is to adjust respectively the oxygen flow rate in the nitrogen-oxygen mixture to be 2.0L / min, 3.5L / min and 4.5L / min, the nitrogen-oxygen mixture The flow rate was kept constant at 10L / min, and the measured combustion rates of the carbonaceous heat source sample were 4.60mm / min, 11.50mm / min, and 16.43mm / min under different oxygen content conditions. The combustion rate tested under the different oxygen content in embodiment 1 and embodiment 2 is plotted to oxygen content, as figure 2 , it can be seen that the coefficient of determination of the fitted linear equation between the two is as high as 0.99883, indicating that the combustion rate of carbonaceous heat sources has a linear dependence on the oxygen content. Therefore...

Embodiment 3

[0034] Embodiment 3: This embodiment is used to evaluate the influence of carbonaceous heat source composition on its combustion rate

[0035] The carbonaceous heat source sample prepared by different carbonaceous heat source formulas is shown in Table 1 under the condition of oxygen concentration of 25% (nitrogen and oxygen flow ratio is 3:1) (see Example 1 for the test method), it can be seen that The addition of potassium chlorate can effectively increase the combustion rate of carbonaceous heat source, while the addition of calcium carbonate, magnesium oxide whiskers and montmorillonite can all reduce the combustion rate of carbonaceous heat source, and the reduction of montmorillonite is as high as 31%. Therefore, the test method for the combustion rate of carbonaceous heat sources provided by the present invention can effectively evaluate the influence of various components on the combustibility of carbonaceous heat sources, and has great guiding significance for the form...

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Abstract

The invention discloses a method and a device for testing the burning rate of a carbonaceous heat source. The method is simple to operate, test data repeatability is good, the burning rate of a carbonaceous heat source material can be tested accurately, and the testing efficiency can be substantially improved through increase of oxygen concentration; the testing device is simple in structure, low in cost and convenient to popularize.

Description

1. Technical field [0001] The invention relates to a test method and a test device for the combustion rate of a carbonaceous heat source, belonging to the field of novel tobacco products. 2. Background technology [0002] Carbon-heated low-temperature cigarettes are one of the important categories of new tobacco products, which are generally achieved by physically separating tobacco from carbon heat sources. The separation of the carbonaceous heat source and the tobacco in space enables the heat source to be burned to release heat and the tobacco to be heated to release smoke independently, so that the tobacco can be heated at a lower temperature (300-500°C), effectively avoiding A large number of harmful compounds are produced when tobacco is burned. From the perspective of the realization of carbon-heated low-temperature cigarettes, the carbon heat source is undoubtedly the core of its design. Since the carbonaceous heat source must be burned to release heat, its combust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/12
Inventor 周顺王孝峰宁敏徐迎波何庆张亚平佘世科朱栋梁陈刚田振峰
Owner CHINA TOBACCO ANHUI IND CO LTD
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