CN102010735A - Coal blending method for controlling degree of shrinkage of coal as fired in large coke oven with wide coking chamber - Google Patents
Coal blending method for controlling degree of shrinkage of coal as fired in large coke oven with wide coking chamber Download PDFInfo
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- CN102010735A CN102010735A CN201010583267XA CN201010583267A CN102010735A CN 102010735 A CN102010735 A CN 102010735A CN 201010583267X A CN201010583267X A CN 201010583267XA CN 201010583267 A CN201010583267 A CN 201010583267A CN 102010735 A CN102010735 A CN 102010735A
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Abstract
The invention discloses a coal blending method for controlling degree of shrinkage of coal as fired in a large coke oven with a wide coking chamber, comprising the following steps: making statistics on the degree of shrinkage of the blended coal in the existing coke ovens with 6m-high coking chambers and computing the average value of the degree of shrinkage of the blended coal in the 6m coke ovens according to the statistic of the degree of shrinkage of the blended coal in the 6m coke ovens; computing the range of the degree of shrinkage of the blended coal in the large coke oven with the wide coking chamber; and correspondingly increasing the blending proportion of the coking coal with high degree of shrinkage for blending coal according to the computed range of the degree of shrinkage of the blended coal in the large coke oven with the wide coking chamber, measuring the degree of shrinkage of the obtained blended coal, if the degree of shrinkage is within the control range, determining the coal blending scheme to blend coal for coking, if the degree of shrinkage is not in the control range, correspondingly increasing or decreasing the blending proportion of the coking coal with high degree of shrinkage, blending coal and detecting the degree of shrinkage until the measured value of the degree of shrinkage of the blended coal in the obtained coal blending scheme is within the control range, thus obtaining the coal blending scheme for the large coke oven with the wide coking chamber. The method can ensure the blended coal to have reasonable degree of shrinkage in the large wide coking chamber and the coking process, thus improving the quality of the coke.
Description
Technical field
The present invention relates to the coke making and coal blending technical field, the blending method of stove coal shrink grading is gone in the reasonable control that particularly is used for large-scale coking chamber coke oven with width.
Background technology
As everyone knows, coking coal is the indispensable resources in field such as metallurgical coke production industry.At present, have now into the stove coking coal and carry out coal blending according to coke quality requirement and existing colliery resource situation.
It has been the general trend of world's coking technology development since the seventies in 20th century that coke oven maximizes.In the coke oven maximization process, the coking chamber height constantly increases on the one hand, and the coking chamber width broadens gradually on the other hand.The increase of coking chamber height has improved the bulk density that has now into the stove coal, has improved coke quality, but a large amount of experiment shows: the increase of coking chamber width causes having now into the stove coal and strengthens in coking process shrinkage, causes the metallurgical coke rate of wide coking chamber to reduce.
Therefore, being necessary to provide a kind of controls large-scale coking chamber coke oven with width and goes into the defective that the blending method of stove coal shrink grading overcomes prior art.
Summary of the invention
The purpose of this invention is to provide a kind of blending method that large-scale coking chamber coke oven with width is gone into stove coal shrink grading of controlling, can be under big molded breadth coking chamber environment, avoid shrinkage to increase in the coking process, thus improve the metallurgical coke rate and improve coke quality.
To achieve these goals, the invention provides a kind of blending method that large-scale coking chamber coke oven with width is gone into stove coal shrink grading of controlling, comprise the steps:
The existing coking chamber height of statistics is 6 meters a coke oven coal blending shrink grading, calculates 6m coke oven coal blending shrink grading mean value according to 6m coke oven coal blending shrink grading statistical value;
Calculate the coal blending shrink grading scope of large-scale coking chamber coke oven with width, calculation formula is: X
6(1+| Δ L|/L
6) (1-| Δ H|/H
6)-5≤X
L≤ X
6(1+| Δ L|/L
6) (1-| Δ H|/H
6)+5, wherein, b
LBe the coal blending shrink grading of large-scale coking chamber coke oven with width, b
6Be 6m coke oven coal blending shrink grading mean value, | Δ L| is the absolute value of difference of the coking chamber width of the coking chamber width of large-scale coking chamber coke oven with width and 6m coke oven, L
6Be the coking chamber width of 6m coke oven, | Δ H| is the absolute value of difference of the coking chamber height of the height of large-scale coking chamber coke oven with width and 6m coke oven, H
6Coking chamber height for the 6m coke oven;
Carry out coal blending and test and detect the shrink grading of the coal for preparing, if shrink grading is not in the coal blending shrink grading scope of the large-scale coking chamber coke oven with width of described calculating, then adjust the allocation ratio of coal, in the coal blending shrink grading scope of shrink grading at the large-scale coking chamber coke oven with width of described calculating of the coal for preparing.
Compared with prior art, the present invention controls the blending method that large-scale coking chamber coke oven with width is gone into stove coal shrink grading, go into stove coal shrink grading mean value according to the 6m coke oven, the coal blending shrink grading scope of calculating large-scale coking chamber coke oven with width in conjunction with the width and the height indicator of large-scale coking chamber coke oven with width, coal blending shrink grading scope according to the large-scale coking chamber coke oven with width that calculates is come coal blending, the shrink grading of the feasible coal of allotting is in the coal blending shrink grading scope of the large-scale coking chamber coke oven with width of described calculating, shrink grading has obtained rational control, like this, that allots goes into the stove coal under big molded breadth coking chamber environment, avoid absolute shrinkage to increase in the coking process, coke quality and metallurgical coke rate greatly improve.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 for the present invention controls large-scale coking chamber coke oven with width go into the schema of the blending method of stove coal shrink grading.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.
As Fig. 1, the present invention controls large-scale coking chamber coke oven with width and goes into the blending method of stove coal shrink grading and comprise the steps:
Step S1, the existing coking chamber height of statistics are 6 meters coke oven coal blending shrink grading, calculate 6m coke oven coal blending shrink grading mean value X according to 6m coke oven coal blending shrink grading statistical value
6
Step S2 calculates the coal blending shrink grading scope of large-scale coking chamber coke oven with width, and calculation formula is:
X
6(1+|ΔL|/L
6)(1-|ΔH|/H
6)-5≤X
L≤X
6(1+|ΔL|/L
6)(1-|ΔH|/H
6)+5
Wherein,
b
LCoal blending shrink grading for large-scale coking chamber coke oven with width;
b
6Be 6m coke oven coal blending shrink grading mean value;
| Δ L| is the absolute value of difference of the coking chamber width of the coking chamber width of large-scale coking chamber coke oven with width and 6m coke oven;
L
6Coking chamber width for the 6m coke oven;
| Δ H| is the absolute value of difference of the coking chamber height of the height of large-scale coking chamber coke oven with width and 6m coke oven;
H
6Coking chamber height for the 6m coke oven;
Step S3, earlier the shrink grading of used different coals is measured by GB, stove coal shrink grading requires and the coal blending ratio of tentatively definite each coal of coke quality requirement according to going into again, carry out coal blending test in proportion, the coal for preparing is carried out representative sampling, detect its shrink grading b value, if in the described coal blending shrink grading scope that calculates large-scale coking chamber coke oven with width, just carry out coal blending production, finish coal blending by this scheme; If detect the b value not in the described coal blending shrink grading scope that calculates large-scale coking chamber coke oven with width, according to the difference size, adjust the coal ratio of corresponding influence, obtain the coal blending ratio of each coal of second batch, repeat above step, in the described coal blending shrink grading scope that calculates large-scale coking chamber coke oven with width, satisfactory coal blending coal and allocation ratio thereof are defined as production coal blending scheme until the coal blending shrink grading.
As shown from the above technical solution, the present invention controls the blending method that large-scale coking chamber coke oven with width is gone into stove coal shrink grading, go into stove coal shrink grading mean value according to the 6m coke oven, the coal blending shrink grading scope of calculating large-scale coking chamber coke oven with width in conjunction with the width and the height indicator of large-scale coking chamber coke oven with width, coal blending shrink grading scope according to the large-scale coking chamber coke oven with width that calculates is come coal blending, the shrink grading of the feasible coal of allotting is in the coal blending shrink grading scope of the large-scale coking chamber coke oven with width that aforementioned calculation goes out, shrink grading has obtained rational control, like this, that allots goes into the stove coal under big molded breadth coking chamber environment, avoid absolute shrinkage to increase in the coking process, coke quality and metallurgical coke rate greatly improve.
Need to prove that the present invention controls large-scale coking chamber coke oven with width and goes into the processing condition that the blending method of stove coal shrink grading is applicable to no moulded coal, no damping and tamping coking.
Above invention has been described in conjunction with most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.
Claims (1)
1. control the blending method that large-scale coking chamber coke oven with width is gone into stove coal shrink grading for one kind, comprise the steps:
The existing coking chamber height of statistics is 6 meters a coke oven coal blending shrink grading, calculates 6m coke oven coal blending shrink grading mean value according to 6m coke oven coal blending shrink grading statistical value;
Calculate the coal blending shrink grading scope of large-scale coking chamber coke oven with width, calculation formula is: X
6(1+| Δ L|/L
6) (1-| Δ H|/H
6)-5≤X
L≤ X
6(1+| Δ L|/L
6) (1-| Δ H|/H
6)+5 or, wherein, b
LBe the coal blending shrink grading of large-scale coking chamber coke oven with width, b
6Be 6m coke oven coal blending shrink grading mean value, | Δ L| is the absolute value of difference of the coking chamber width of the coking chamber width of large-scale coking chamber coke oven with width and 6m coke oven, L
6Be the coking chamber width of 6m coke oven, | Δ H| is the absolute value of difference of the coking chamber height of the height of large-scale coking chamber coke oven with width and 6m coke oven, H
6Coking chamber height for the 6m coke oven;
Carry out coal blending and test and detect the shrink grading of the coal for preparing, if shrink grading is not in the coal blending shrink grading scope of the large-scale coking chamber coke oven with width of described calculating, then adjust the allocation ratio of coal, in the coal blending shrink grading scope of shrink grading at the large-scale coking chamber coke oven with width of described calculating of the coal for preparing.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045279A (en) * | 2012-12-14 | 2013-04-17 | 同济大学 | Production performance and energy consumption collaborative optimization method for coal blending system |
| CN105778960A (en) * | 2016-05-04 | 2016-07-20 | 武汉钢铁股份有限公司 | Controlling method for shrinkage degree of coal-as-fired with different moisture |
| CN105838407A (en) * | 2016-05-04 | 2016-08-10 | 武汉钢铁股份有限公司 | Coking coal blending method for controlling shrinkage degree of blended coal |
| CN105885905A (en) * | 2016-05-04 | 2016-08-24 | 武汉钢铁股份有限公司 | Method for controlling shrinkage degrees of coal as fired with different bulk densities |
| CN109401775A (en) * | 2018-10-18 | 2019-03-01 | 武汉钢铁有限公司 | The coke shrinkage control method of top dress coke oven |
| CN111693558A (en) * | 2019-03-11 | 2020-09-22 | 上海梅山钢铁股份有限公司 | Method for detecting semicoke shrinkage rate in coking process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624527A (en) * | 2009-08-04 | 2010-01-13 | 武汉钢铁(集团)公司 | Coal blending method of 7.63m coke oven during starting work |
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2010
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624527A (en) * | 2009-08-04 | 2010-01-13 | 武汉钢铁(集团)公司 | Coal blending method of 7.63m coke oven during starting work |
Non-Patent Citations (1)
| Title |
|---|
| 于翔龙等: "7.63米焦炉设备本体制造工艺技术", 《2009全国钢结构学术年会论文集》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045279A (en) * | 2012-12-14 | 2013-04-17 | 同济大学 | Production performance and energy consumption collaborative optimization method for coal blending system |
| CN105778960A (en) * | 2016-05-04 | 2016-07-20 | 武汉钢铁股份有限公司 | Controlling method for shrinkage degree of coal-as-fired with different moisture |
| CN105838407A (en) * | 2016-05-04 | 2016-08-10 | 武汉钢铁股份有限公司 | Coking coal blending method for controlling shrinkage degree of blended coal |
| CN105885905A (en) * | 2016-05-04 | 2016-08-24 | 武汉钢铁股份有限公司 | Method for controlling shrinkage degrees of coal as fired with different bulk densities |
| CN105778960B (en) * | 2016-05-04 | 2018-10-19 | 武汉钢铁有限公司 | A kind of control method of the degree of shrinkage of different in moisture as-fired coal |
| CN105885905B (en) * | 2016-05-04 | 2018-12-21 | 武汉钢铁有限公司 | A kind of control method of the degree of shrinkage of difference heap density as-fired coal |
| CN109401775A (en) * | 2018-10-18 | 2019-03-01 | 武汉钢铁有限公司 | The coke shrinkage control method of top dress coke oven |
| CN111693558A (en) * | 2019-03-11 | 2020-09-22 | 上海梅山钢铁股份有限公司 | Method for detecting semicoke shrinkage rate in coking process |
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| CN102010735B (en) | 2013-04-03 |
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Effective date of registration: 20171025 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
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