Coal blending method for controlling coal as fired dilatation of large-scale coke oven with wide coking chamber

Abstract

The invention discloses a coal blending method for controlling coal as fired dilatation of a coke oven with a large-scale wide coking chamber. The method comprises the following steps: carrying out statistics on coal blending dilatation of the existing coke oven with a 6-meter-high coking chamber, and calculating an average value of the coal blending dilation of the 6-meter-high coke oven in accordance with the statistic of the coal blending dilatation of the 6-meter-high coke oven; calculating the coal blending dilatation range of the coke oven with the large-scale wide coking chamber; correspondingly increasing the proportion of varieties of high-dilatation coking coals for coal blending in accordance with the calculated coal blending dilatation range of the coke oven with the large-scale wide coking chamber, determining the obtained coal blending dilatation; if the dilatation is in the control range, determining a coal blending scheme to carry out coal blending coking; and if the dilatation is not in the control range, correspondingly increasing and decreasing the proportion of varieties of high-dilatation coking coals, carrying out coal blending and dilatation detection until the measured value of the coal blending dilatation in the obtained coal blending scheme is in the control range, namely, the coal blending scheme for the coke oven with the large-scale wide coking chamber. The coals blended by the method are subject to reasonable dilation in the large-scale wide coking chamber in the coking process, thus improving the coke quality.

Description

technical field [0001] The invention relates to the technical field of coking coal blending, in particular to a coal blending method for rationally controlling the expansion degree of furnace coal (hereinafter referred to as expansion degree) for large coke ovens with wide carbonization chambers. Background technique [0002] As we all know, coking coal is an indispensable resource in metallurgical coke production industry and other fields. At present, the existing furnace coking coal is blended according to the coke quality requirements and the existing coal mine resources. [0003] Large-scale coke oven is the general trend of coking technology development in the world since the 1970s. In the process of large-scale coke oven, on the one hand, the height of the carbonization chamber is continuously increasing, and on the other hand, the width of the carbonization chamber is gradually widening. The increase in the height of the carbonization chamber increases the bulk dens...

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Problems solved by technology

The increase in the height of the carbonization chamber increases the bulk density of the existing coal into the furnace and improves the quality of coke, but a large number of experiments show that: the increase in the width of the carbonization chamber leads to improper control of the expansion of the existing coal into the furnace during the coking process, affecting the quality of coke, or Increase the amount of high-quality coking coal and increase the resource cost of the enterprise

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