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Method and device for measuring the oxygen adsorption capacity per unit mass of semi-coke and its application in the evaluation of spontaneous combustion tendency of active semi-coke

A technology of oxygen adsorption capacity and unit mass, which is applied to the device of oxygen adsorption capacity to measure the oxygen adsorption capacity of semi-coke per unit mass.

Active Publication Date: 2017-09-22
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of measuring the oxygen adsorption capacity of semi-coke, provide a method and device for measuring the oxygen adsorption capacity of semi-coke per unit mass and its application in the evaluation of spontaneous combustion tendency of active semi-coke

Method used

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  • Method and device for measuring the oxygen adsorption capacity per unit mass of semi-coke and its application in the evaluation of spontaneous combustion tendency of active semi-coke
  • Method and device for measuring the oxygen adsorption capacity per unit mass of semi-coke and its application in the evaluation of spontaneous combustion tendency of active semi-coke
  • Method and device for measuring the oxygen adsorption capacity per unit mass of semi-coke and its application in the evaluation of spontaneous combustion tendency of active semi-coke

Examples

Experimental program
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Effect test

Embodiment 1

[0056] This example is used to illustrate the method for measuring the oxygen adsorption capacity of semi-coke provided by the present invention.

[0057] (1) Take the Hulunbuir coal sample (HLBB coal sample for short, the results of its industrial analysis and elemental analysis are shown in Table 1 and Table 2 below. The benchmarks of industrial analysis and elemental analysis are air-dry base, while elemental analysis is only for organic matter Analyze, excluding ash and moisture) 150g, the average particle size is to be put into pyrolysis furnace less than 6mm, under the condition of isolating air, under T1 condition (heating rate is 10 ℃ / min, final pyrolysis temperature is 520 ℃) heat up the pyrolysis furnace to carry out pyrolysis, and the obtained semi-coke is denoted as HLBB T1;

[0058] Table 1

[0059]

[0060] Table 2

[0061]

[0062] (2) Quickly put the semi-coke HLBB T1 into a metering closed container and cool it to room temperature, then screen the semi-c...

Embodiment 2

[0068] This example is used to illustrate the method for measuring the oxygen adsorption capacity of semi-coke provided by the present invention.

[0069] According to the method of Example 1, the difference is that in step (1), the T2 condition (the heating rate is 5° C. / min, and the final pyrolysis temperature is 600° C.) is used instead of the T1 condition. The obtained semi-coke is denoted as HLBB T2.

[0070] according to figure 2 When obtaining Qair=20ml / min, ρair=1.11g / ml, Wcoal=40g, t0=0 seconds, t=8000 seconds, the oxygen adsorption capacity D (8000) of semi-coke HLBB T2 is 1.46mg / g.

Embodiment 3

[0072] This example is used to illustrate the method for measuring the oxygen adsorption capacity of semi-coke provided by the present invention.

[0073] According to the method of embodiment 1, difference is, with Heishan coal sample (being called for short HS coal sample, its industrial analysis and elemental analysis result are shown in following table 3 and table 4, the benchmark of industrial analysis and elemental analysis all is air drying base, while elemental analysis is only for organic matter, excluding ash and moisture) instead of HLBB coal samples. The obtained semi-joke is denoted as HS T1.

[0074] according to figure 2 When obtaining Qair=20ml / min, ρair=1.11g / ml, Wcoal=40g, t0=0 seconds, t=8000 seconds, the oxygen adsorption capacity D (8000) of semi-coke HS T1 is 2.88mg / g.

[0075] table 3

[0076]

[0077] Table 4

[0078]

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Abstract

The invention discloses a method and device for measuring the oxygen adsorption amount per unit mass of semi-coke and its application in evaluating the spontaneous combustion tendency of active semi-coke. The method includes coal pyrolysis to obtain semi-coke, measuring C(t) and Ca(t), and determining the oxygen adsorption amount D(t) per unit mass of semi-coke at different times from C(t) and Ca(t), And obtain the oxygen adsorption capacity curve corresponding to different time. The method for determining the oxygen adsorption amount per unit mass of semi-coke can be applied to evaluate the spontaneous combustion tendency of active semi-coke, so as to help guide the determination of basic design parameters of semi-coke passivation treatment process.

Description

technical field [0001] The invention relates to a method and device for measuring the oxygen adsorption amount per unit mass of semi-coke and its application in evaluating the spontaneous combustion tendency of active semi-coke. Specifically, it relates to a method for measuring the oxygen adsorption amount per unit mass of semi-coke, which method is applied in the assessment of spontaneous combustion tendency of active semi-coke, and a device for measuring the oxygen adsorption amount per unit mass of semi-coke. Background technique [0002] In my country, low-rank coal stocks including lignite are abundant, accounting for more than 40% of the total coal stock, and they are mainly distributed in Yunnan, Inner Mongolia, Northeast China, Xinjiang and other places. Low-rank coal is characterized by high water content, low calorific value, high volatile content, easy weathering and fragmentation, easy oxidation and spontaneous combustion, and is not suitable for long-distance t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/22G01N27/26
Inventor 陈爱国高鹏赵香龙郭屹
Owner CHNA ENERGY INVESTMENT CORP LTD
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