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High-intensity and high-reactivity gasified coke production method using high-proportion long flame coal

A high-reactivity, long-flame coal technology, applied in coking ovens, special forms of dry distillation, petroleum industry, etc., can solve the problems of reducing production costs, high reactivity, low coking coal dosage, etc., to expand production flexibility Effect

Active Publication Date: 2017-08-22
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

[0005] The present invention is aimed at the problem that the amount of coking coal is reduced and the coke strength is greatly reduced after a high proportion of long-flame coal is added. Under the existing coking conditions, by adjusting the proportion of long-flame coal, gas coal and fat coal and particle size distribution, the bulk density is increased by tamping, and the addition of high and low-rank coal, low coking coal, high gasification coke strength, and high reactivity can be achieved through a simple method, which greatly reduces production costs and realizes energy and energy consumption. Effective integration of resources

Method used

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Embodiment 1

[0023] (1) According to the national standard method, the gel layer thickness of Shenmu long flame coal (SMC), Wuhai gas coal (QM-1) and Taiyuan fat coal (FM-1) were determined to be 0, 11, 32 respectively;

[0024] (2), according to the additivity of the Y value of a single coal, first draw up the ratio of the single coal when the Y value of the blended coal is greater than 10; The proportioning ratio of coal and fat coal is 40wt%, 35wt%, 25wt% respectively;

[0025] (3), single coal is pulverized respectively, and by weight percent, the particle size distribution of SMC is <1mm ratio 25%, 1-2mm ratio 25%, 2-3mm ratio 50%; The particle size distribution of QM-1 is The proportion of <1mm is 15%, the proportion of 1-2mm is 30%, and the proportion of 2-3mm is 55%. The particle size distribution of FM-1 is <0.2mm and the proportion is more than 90%

[0026] (4), coal types of different particle sizes are mixed, and add moisture 10wt%;

[0027] (5) After mixing evenly, tamp the...

Embodiment 2

[0030] Pingshuo long-flame coal (PSC), Wuhai gas coal (QM-1) and Wuhai fat coal (FM-2) used in this example have gelatinous layer thicknesses of 0, 11, and 33 respectively, and their dosages 40wt%, 35wt%, and 25wt%, respectively. The particle size distribution of PSC is 25% of 3 , the heating rate is 5°C / min, and the water addition amount is 9wt%. The Y value of the blended coal, coke strength and reactivity index are shown in Table 1. All the other are with embodiment 1.

Embodiment 3

[0032] The colloid layer thicknesses of Shenmu long-flame coal (SMC), Shenmu gas coal (QM-2), and Wuhai fat coal (FM-2) used in this embodiment are 0, 12, and 33 respectively, and their dosages are respectively 40wt%, 35wt%, 25wt%. The particle size distribution of SMC is 25% of 3 , the heating rate is 4°C / min, and the water addition amount is 11wt%. The Y value of the blended coal, coke strength and reactivity index are shown in Table 1. All the other are with embodiment 1.

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Abstract

Provided is a high-intensity and high-reactivity gasified coke production method using high-proportion long flame coal. The method includes the steps that according to the additivity of the Y value of each kind of single coal, firstly, when the Y value of mixed coal is greater than 10, the proportion of each kind of single coal is set; then, the proportion of each kind of single coal is adjusted to be limited to the following ranges, wherein the mixed coal is prepared from, by weight, 40-50% of flame coal, 25-35% of gas coal and 20-25% of rich coal; all kinds of single coal are smashed separately and then mixed, it is ensured that fired coal of which the fineness is smaller than 3 mm accounts for 90 wt.% or above, and 9-11 wt.% of water is added; after tamping, the bulk density is greater than 0.95 g / cm<3>; then, coking is conducted, and gasified coke is obtained. The high-intensity and high-reactivity gasified coke production method using the high-proportion long flame coal has the advantages that the high-intensity and high-reactivity gasified coke can be produced under the current coking conditions.

Description

technical field [0001] The invention belongs to the technical field of coking coal blending, and in particular relates to a coking coal blending method for blending long-flame coal in a high proportion to produce high-strength and high-reactivity gasification coke. Background technique [0002] my country is rich in low-rank coal reserves, but the output of low-rank pulverized coal is large during the mining process, most of which are used for combustion and power generation, and the energy utilization efficiency is low. In addition, low-rank coal has a high volatile matter yield and can produce a large amount of high value-added oil and gas products, so it is feasible to realize high-efficiency utilization of low-rank pulverized coal. In recent years, affected by its own technical level, excess production capacity and the downstream market, the coking industry is facing difficulties, and a large number of coke ovens are stagnant. How to make full use of the excess coking pr...

Claims

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Application Information

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IPC IPC(8): C10L5/04C10B53/04
CPCC10B53/04C10L5/04
Inventor 黄戒介杨志荣孟庆岩王志青刘哲语李春玉房倚天
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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