Coal quality evaluation method

A quality evaluation and coal technology, applied in data processing applications, complex mathematical operations, instruments, etc., can solve the problems of quality classification that cannot be quantified by coal types, rough analysis methods, etc., achieve a wide range of applications, and eliminate single evaluation factors Effect

Pending Publication Date: 2022-02-01
HUANENG (GUANGDONG) ENERGY DEV CO LTD
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Problems solved by technology

[0003] However, at present, coal-fired power plants generally use coal testing methods to obtain coal quality data of various types of coal entering the plant, including calorific value, sulfur content, volatile matter, and moisture, etc., and directly use the coal quality testing data for coal quality analysis. Quality analysis, the analysis method is relatively rough, and it is not possible to quantitatively classify the quality of various coal types

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Experimental program
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Effect test

Embodiment 1

[0123] Through this coal quality evaluation method, the actual values ​​of various evaluation indicators of coal type 1, quality factors, and final evaluation results are shown in Table 1:

[0124]

[0125] Table 1

[0126] Through this coal quality evaluation method, the actual values ​​of various indicators of coal type 2, quality factors, and final evaluation results are shown in Table 2:

[0127]

[0128] Table 2

[0129] From the comparative analysis of Table 1 and Table 2, it can be seen that although the coal price of coal type 2 is 100 yuan / ton higher than that of coal type 1, an increase of 10%, due to the higher calorific value (calorific value) of coal type 2, Volatile content, sulfur content, ash melting point and other indicators are better than coal type 1, and the final comprehensive evaluation result of coal type 2 calculated by the mathematical calculation model of quality evaluation result (Y) is 0.99, which is higher than coal type 1's 0.96. That is ...

Embodiment 2

[0131] Through this coal quality evaluation method, the actual values, quality factors and final evaluation results of various evaluation indicators of coal type 3 are shown in Table 3:

[0132]

[0133] table 3

[0134] Through this coal quality evaluation method, the actual values ​​of various indicators of coal type 4, quality factors, and final evaluation results are shown in Table 4:

[0135]

[0136] Table 4

[0137] From the comparative analysis of Table 3 and Table 4, it can be seen that although coal type 4 has better indicators such as calorific value, volatile matter, sulfur content, and ash melting point than coal type 3, the weight factor of coal price in this embodiment is 0.4 , and the coal price of coal type 4 is 300 yuan / ton higher than that of coal type 3. The final comprehensive evaluation result of coal type 3 calculated by the mathematical calculation model of the quality evaluation result (Y) is 0.95, which is higher than the 0.92 of coal type 4 ....

Embodiment 3

[0139] Through this coal quality evaluation method, the actual values, quality factors and final evaluation results of various evaluation indicators of coal type 3 are shown in Table 5:

[0140]

[0141] table 5

[0142] Through this coal quality evaluation method, the actual values ​​of various indicators of coal type 4, quality factors, and final evaluation results are shown in Table 6:

[0143]

[0144] Table 6

[0145] From the comparative analysis of Table 5 and Table 6, it can be seen that the final comprehensive evaluation results of coal type 5 and coal type 6 calculated by the mathematical calculation model of the quality evaluation result (Y) are both 0.97,

[0146] In this embodiment, the weights of the stable combustion characteristic index, sulfur content, calorific value, and coal price are set higher according to the demand. By comparing the evaluation indicators corresponding to the weights set to the lowest, it can be seen from the analysis of this sys...

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Abstract

The invention discloses a coal quality evaluation method. The coal quality evaluation method comprises the following steps: setting coal evaluation indexes, and establishing a coal evaluation index analysis model; acquiring evaluation index parameters of the coal, and grading the evaluation index parameters according to a comprehensive evaluation index; setting a quality factor and a grading value for the evaluation index, and obtaining an evaluation factor through a calculation model of the evaluation index; setting the weight of the evaluation index; and performing weighted synthesis on the evaluation factors according to the weights of the evaluation indexes to obtain a final quality evaluation result. The coal quality evaluation method has the beneficial effects that by establishing the quality evaluation model and utilizing the scientific method, quality grading and scoring are carried out after coal quality characteristic numerical values are normalized, quantitative quality factor values are given, quality grading and scoring can be carried out on coal from multiple dimensions, and finally the comprehensive evaluation result of the coal is obtained; the coal quality factor is fully and completely considered, the application range is wide, and the method is diversified for users.

Description

technical field [0001] The invention belongs to the field of coal quality evaluation and classification, and in particular relates to a coal quality evaluation method. Background technique [0002] my country's coal resources are rich in reserves, but the regional distribution of coal resources is uneven, and affected by geological processes and differences in coal-forming periods, the coal types and coal quality of coal resources in various regions vary greatly, which directly leads to the price of raw coal pits of different coal types in various regions. There is a gap, which in turn affects coal-fired power companies' coal procurement decisions. In addition, different quality coal types have a great impact on the combustion state of coal-fired power generation enterprises, and in extreme cases may affect the safe operation of the unit. Based on this, coal quality analysis is extremely important for coal-fired power generation enterprises. [0003] However, at present, co...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06F17/18
CPCG06Q10/06393G06F17/18
Inventor 刘安仓黄和龙谢颖纨尤亮陈明光严聪李史栋
Owner HUANENG (GUANGDONG) ENERGY DEV CO LTD
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