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A method for predicting thermal properties of coke

A prediction method and technology for thermal performance, applied in the field of coal chemical industry, can solve the problems of unfavorable stable production of blast furnaces, large fluctuations in thermal performance of coke, and large differences in coking performance, and achieve the effect of facilitating stable production of blast furnaces and small fluctuations

Active Publication Date: 2018-03-13
武汉钢铁有限公司
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Problems solved by technology

However, in actual research, it is often found that the cohesion index G value and Y value have static appearance, and coking coal with close volatile matter, G value, and Y value often appears, and the coking performance is quite different, resulting in large fluctuations in the thermal performance of coke in production. , which is very unfavorable to the stable production of the blast furnace

Method used

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  • A method for predicting thermal properties of coke
  • A method for predicting thermal properties of coke
  • A method for predicting thermal properties of coke

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Experimental program
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specific Embodiment

[0027] Concrete embodiment sees as follows:

Embodiment

[0029] The mixed coal contains gas coal, fat coal (fluidity 20000ddpm, b value 180%), 1 / 3 mass coking coal 1﹟ (fluidity 1500ddpm), 1 / 3 mass coking coal 2﹟ (fluidity<200ddpm), coking coal ,lean coal;

[0030] Select at least 7 coal blending schemes according to the type of coal, see Table 1 below for details:

[0031] Table 1 Coal blending scheme

[0032]

[0033] CSR=K+K 1 ×C 粗 +K 2 ×F 纤维+片状 +K 3 ×T 同性 +K 4 ×X 1 lg MF1+K 5 ×X 2 lg MF2+K 6 ×X 2 b (1)

[0034] According to different coal blending structures for coking, the coking microstructure of each blending coal is shown in Table 2 below:

[0035] Table 2 Coke microstructure of various coal blends

[0036]

[0037] Substituting the above results into formula (1), the following formula (2) is obtained:

[0038] CSR=41.0+0.613∑X 粗粒 -0.249∑X 纤维 +2.32X 1 / 3焦 lm w 1 / 3焦 +4.78X 肥 lm w 肥 +0.0781X 肥 b 肥 -0.200X 同性 (2)

[0039] Through the prediction model of thermal properties of coke, the key indicato...

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Abstract

The invention discloses a method for predicting thermal properties of coke. The steps are as follows: 1. Determining the microstructure of coal blending into coke according to the coal blending structure; Average, denoted as lgMF1, carry out weighted average for fluidity ≥ 10000ddpm coking coal fluidity, denoted as lgMF2, carry out weighted average for expansion degree of coking coal with b value ≥ 80%, denote as b; 3. Solve each control index and Correlation coefficient relationship of thermal performance: CSR=K+K1×C coarse+K2×F fiber+flaky+K3×T isotropic+K4×X1lg MF1+K5×X2 lg MF2+K6×X2b; 4. Determine to meet CSR requirements The control range of each index is adjusted to adjust the specific proportion of blended coal. The invention makes the thermal property CSR of the coke meet the production requirement, is beneficial to the stable production of the blast furnace, and can be widely used in the field of coal chemical industry.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to a method for predicting the thermal properties of coke. Background technique [0002] Blending coal is made by blending individual coals according to a certain ratio. Its quality depends on the quality of single coal and the blending ratio of coking coal, but the quality of blending coal is not simply summed up by the ratio of individual coals. At present, the prediction of the thermal performance of coke in various domestic coking enterprises is mainly carried out by matching the ash content, sulfur content, volatile matter, G value (cohesion index) and Y value (colloid layer index) of coal. However, in actual research, it is often found that the cohesion index G value and Y value have static appearance, and coking coal with close volatile matter, G value, and Y value often appears, and the coking performance is quite different, resulting in large fluctuations in the therma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00G06Q10/04G06Q50/02
Inventor 项茹薛改凤宋子逵崔会明冯柏华张雪红詹立志陈鹏鲍俊芳孙彬任玉明
Owner 武汉钢铁有限公司