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Correction calculation method for output and unit consumption test results of medium-speed coal mill

A technology for correcting calculation and test results, applied in complex mathematical operations, grain processing, etc.

Active Publication Date: 2021-07-30
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

However, there is no calculation formula or calculation method for correcting the output of the coal mill and the unit consumption test results in the current published literature that fully considers the above factors

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  • Correction calculation method for output and unit consumption test results of medium-speed coal mill
  • Correction calculation method for output and unit consumption test results of medium-speed coal mill
  • Correction calculation method for output and unit consumption test results of medium-speed coal mill

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the examples.

[0039] The present invention provides a medium-speed coal mill power consumption correction calculation method in the power consumption calculation of a thermal power unit, including: the measured value of the coal mill output measured by the coal mill performance test should use the following formula (1) Make a correction:

[0040] B t_corr =B t_m / (ξ 1 ×ξ 2 ×ξ 3 ×ξ 4 ×ξ 5 ) (1)

[0041] In the formula: B t_corr Output for the corrected coal mill, t / h; B t_m is the measured value of coal mill output, t / h; ξ 1 is the correction factor of the test coal grindability coefficient HGI to the output of the coal mill; ξ 2 is the correction factor of the test coal particle size to the output of the coal mill; ξ 3 is the correction factor of the test coal moisture to the output of the coal mill; ξ 4 is the correction factor of the test coal ash content to the output of the coal...

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Abstract

The invention discloses a correction calculation method for output and unit consumption test results of a medium-speed coal mill. The correction calculation method comprises the following steps: (a) separately calculating correction factors xi 1, xi 2, xi 3, xi 4 and xi 5 of a grindability index, coal particle size, total moisture content, ash content and pulverized coal fineness of test coal on output of the coal mill according to the grindability index, coal particle size, total moisture content, ash content and pulverized coal fineness of the test coal, and further calculating corrected output Bt_corr of the coal mill; and (b) calculating to obtain corrected unit consumption Et_corr of the coal mill according to the corrected output of the coal mill. The correction calculation method is used for correcting the output and unit consumption of the medium-speed coal mill, and the corrected output and unit consumption of the coal mill can reflect the real performance of the tested coal mill equipment.

Description

technical field [0001] The invention belongs to the field of performance tests of generator sets, and in particular relates to a correction calculation method for the output of a medium-speed coal mill and the test results of unit consumption. Background technique [0002] Coal mill output and unit consumption are the two main indicators of coal mill performance, and are usually used as guaranteed values ​​in coal mill equipment technical agreements. When the test unit performs the coal mill performance test, due to various factors, the test conditions are always different from the design conditions, which makes it difficult to directly measure the output and unit consumption test results of the coal mill and the design value or guaranteed value. For comparison, directly using the measured results as the final result is not rigorous enough and prone to controversy. At present, the test standards commonly used in the power industry are generally the American standard ASME PT...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C23/00G06F17/10
CPCB02C23/00G06F17/10
Inventor 王慧青赵永坚徐征
Owner XIAN THERMAL POWER RES INST CO LTD
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