CN104102821B - The method for setting up bottle coal coal property evaluation model - Google Patents
The method for setting up bottle coal coal property evaluation model Download PDFInfo
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- CN104102821B CN104102821B CN201410309662.7A CN201410309662A CN104102821B CN 104102821 B CN104102821 B CN 104102821B CN 201410309662 A CN201410309662 A CN 201410309662A CN 104102821 B CN104102821 B CN 104102821B
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Abstract
The invention discloses a kind of method for setting up bottle coal coal property evaluation model, comprise the following steps：1) P is set as bottle coal coal property evaluation index, and order：P=Pj+K1×(M‑Mj)+K2×(N‑Nj), wherein M, N, Mj、NjGranular mosaic texture ratio, the same sex and the inertia structure proportion sum of bottle coal and benchmark bottle coal respectively to be evaluated；K1、K2For constant, and it is associated by following relational expression with intensity CSR after coke thermal response：CSR=K+K1×M+K2× N, wherein K are constant；2) second formula is walked by the way that the numerical value of intensity CSR after granular mosaic texture ratio, the same sex and the inertia structure proportion sum and coke thermal response of three groups of different bottle coals is substituted into, obtains K, K1、K2；By K1、K2With the M of benchmark bottle coalj、NjIndex substitutes into first formula, obtains P, P values are bigger, then represent bottle coal ature of coal better.The present invention is conducive to the good and bad degree and coal chemical enterprise of clear and definite separate sources bottle coal to the reasonable adapted of separate sources bottle coal, is improved beneficial to coke quality steady, reduces hot property fluctuating range.
Description
Technical field
The invention belongs to technical field of coal chemical industry, and in particular to a kind of method for setting up bottle coal coal property evaluation model.
Background technology
Chinese bottle coal aboundresources, bottle coal and 1/3 coking coal reserves account for Chinese coking coal reserves more than half, and strong cohesiveness
Rich coal and coking coal resource are relatively fewer, are more preferable using bottle coal resource, and bottle coal ature of coal need to be deepened to recognize.According to GB5751-
2009《Chinese coking coal classification》National standard, bottle coal can divide bottle coal 34#, 43#, 44#, 45# tetra- trades mark, mainly with volatilization
Divide and G values are distinguished, volatile matter>28.0~37.0, G value>50~65, it is bottle coal 34#, volatile matter>37.0%, G value>35, respectively
For bottle coal 43#, 44#, 45#.Different trade mark bottle coal volatile matters are can be seen that from grade of coal index and G values differ greatly, in addition
Volatile matter and G values can only characterize the appearance features of bottle coal, it is impossible to directly be contacted with Thermal Properties of Coke, it is impossible to preferably instruct different coals
The adapted of matter bottle coal.
The content of the invention
Dry basis ash content≤9.00% is set up it is an object of the invention to provide one kind, the bottle coal ature of coal of sulphur content≤0.6% is commented
The method of valency model, this method determines its weight, quantitatively evaluating according to the percentage contribution of different quality index STRENGTH ON COKE hot property
The relative superior or inferior degree of separate sources bottle coal quality, had both contributed to according to separate sources bottle coal ature of coal rational evaluation and had used, again
Contribute to Rational Utilization of Coking Coal.
To achieve the above object, method of the invention comprises the following steps：
1) the ature of coal key index of bottle coal is detected, its granular mosaic texture ratio M (unit is %), the same sex and inertia is drawn
Structure proportion sum N (unit is %)；
2) it is bottle coal coal property evaluation index to set P (unit is %), and order：
P=Pj+K1×(M-Mj)+K2×(N-Nj) (1)
Wherein PjOn the basis of bottle coal coal property evaluation index, Mj、NjRespectively the granular mosaic texture ratio of benchmark bottle coal,
The same sex and inertia structure proportion sum；K1、K2For constant, represent the weight of evaluation points, and with intensity CSR after coke thermal response
(unit is %) is associated by following relational expression：
CSR=K+K1×M+K2×N (2)
Wherein K is constant；
3) by by the granular mosaic texture ratio, the same sex and inertia structure proportion sum and coke of three groups of different bottle coals
Intensity CSR numerical value substitutes into formula (2) after thermal response, obtains K, K1、K2；By K1、K2With the M of benchmark bottle coalj、NjIndex substitutes into formula
(1) bottle coal coal property evaluation indices P, is obtained, P values are bigger, then represent bottle coal ature of coal better.
The present invention has following beneficial effect：
(1) the granular mosaic texture ratio, the same sex and inertia structure proportion sum of bottle coal are defined as evaluating gas by the present invention
The key index of ature of coal amount, draws the coefficient correlation of each evaluation index, specifies the good and bad degree of separate sources bottle coal；
(2) it is beneficial to Reasonable Orientation of the purchasing department to separate sources bottle coal price；
(3) it is beneficial to coal chemical enterprise to the reasonable adapted of separate sources bottle coal, improves, reduce hot beneficial to coke quality steady
Can fluctuating range.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
Certain enterprise's bottle coal proportioning is 40%, dry basis ash content≤9.00% of the bottle coal, sulphur content≤0.6%, its coal blending side
Case is specially：
Bottle coal：40%；Rich coal：20%；Coking coal 1#：40%.G value >=85 of the coking coal 1#, coking coarse grain mosaic texture
Ratio >=60%.
Rich coal, coking coal keep constant, take three groups of different bottle coals of enterprise, carry out coal-blending coking according to said ratio, obtain
Intensity after coke thermal response, detects the ature of coal key index of three groups of bottle coals, draw its granular mosaic texture ratio M, the same sex and
Inertia structure proportion sum N.Each related data is shown in Table 1.
Intensity after the thermal response of coke after the different bottle coal progress coal blendings of table 1
| Coal sample | Vdaf | G | M/% | N/% | CSR/% |
| Bottle coal 1# | 37.82 | 80 | 76 | 24 | 68.47 |
| Bottle coal 2# | 37.66 | 81 | 46 | 54 | 57.24 |
| Bottle coal 3# | 36.17 | 55 | 12 | 88 | 47.99 |
Each data of table 1 are substituted into formula (2), K, K are drawn respectively1And K2For：61.11、0.123、-0.17.
Produce：CSR=61.11+0.123M-0.170 × N.
Three kinds of different bottle coals of selection can make K, K1And K2It is slightly different, but these differences can't change to bottle coal carry out
The relative ranks of coal property evaluation.
The enterprise newly buys certain ore deposit point different batches bottle coal, and the coal analysis of each bottle coal the results are shown in Table 2.
The coal analysis result of table 2
4 bottle coals are according to current domestic evaluation criterion：By current domestic evaluation criterion, bottle coal 5# atures of coal are optimal,
Next to that bottle coal 4#, is followed by bottle coal 7#, worst is bottle coal 6#.In addition, the granular mosaic texture ratio of 4 separate sources bottle coals
Example M, the same sex and inertia structure proportion sum N numerical value are shown in Table 3.
The bottle coal coal property evaluation factor of table 3 and evaluation number
By granular mosaic texture ratio M be the bottle coal that the 65%, same sex and inertia structure proportion sum N are 30% on the basis of gas
Coal, its evaluation number is set as 64, then related data is substituted into formula (1), the coal property evaluation indices P of 4 bottle coals is tried to achieve respectively
For：66、63、52、51.Coal sample 5# evaluation numbers higher than G values the low coal sample 4# of G values are high, and coal sample 5# scorings are higher than benchmark sample, its
High than benchmark sample with consumption, coal sample 4# is then slightly below benchmark sample with consumption；The low coal sample 6# of G values is than coal sample 7# evaluation numbers
It is low, and be less than in benchmark sample, should be lower than benchmark sample with consumption in coal blending.
4 kinds of bottle coals carry out coal-blending coking respectively by more than, and its gained Thermal Properties of Coke is shown in Table 4.
4 three kinds of bottle coals of table participate in intensity (CSR/%) after coke thermal response obtained by coal-blending coking
In table 4, scheme 1：Bottle coal：40%；Rich coal：20%；Coking coal 1#：40%.
Scheme 2：Bottle coal：10%；1/3 coking coal：20%；Rich coal：15%；Coking coal 1#：20%；Coking coal 2# (85>G values >=
80)：20%；Lean coal：15%.
Wherein coking coal 1#, coking coal 2#, lean coal, 1/3 coking coal, rich coal are all identical in embodiment 1~6；Its related coal analysis
It the results are shown in Table 5.
The coal analysis result of table 5
From table 4, it can be seen that the coal property evaluation method of the present invention can be evaluated bottle coal ature of coal well, and bottle coal
Ature of coal with the bottle coal participate in coal-blending coking obtained by coke thermal response after intensity there is preferable correlation.
Therefore, the rational model of bottle coal coal property evaluation is set up, the determination that different ature of coal bottle coals match somebody with somebody consumption is not only contributed to, also
Purchasing department is conducive to buy high performance-price ratio bottle coal.
Claims (1)
1. a kind of method for setting up bottle coal coal property evaluation model, dry basis ash content≤9.00% of the bottle coal, sulphur content≤0.6%；
This method comprises the following steps：1) the ature of coal key index of bottle coal is detected, its granular mosaic texture ratio M, the same sex and lazy is drawn
Property structure proportion sum N；
2) P is set as bottle coal coal property evaluation index, and order：
P=Pj+K1×(M-Mj)+K2×(N-Nj) (1)
Wherein PjOn the basis of bottle coal coal property evaluation index, Mj、NjRespectively granular mosaic texture ratio, the same sex of benchmark bottle coal
With inertia structure proportion sum；K1、K2For constant, the weight of evaluation points is represented, and is passed through with intensity CSR after coke thermal response
Following relational expression is associated：
CSR=K+K1×M+K2×N (2)
Wherein K is constant；
3) by the way that granular mosaic texture ratio, the same sex and the inertia structure proportion sum and coke heat of three groups of different bottle coals is anti-
Intensity CSR numerical value substitutes into formula (2) after answering, and obtains K, K1、K2；By K1、K2With the M of benchmark bottle coalj、NjIndex substitutes into formula (1), asks
Go out bottle coal coal property evaluation indices P, P values are bigger, then represent bottle coal ature of coal better.
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| CN106228011B (en) * | 2016-07-22 | 2019-01-01 | 武汉钢铁有限公司 | The evaluation method of coke quality steady |
| CN109409785B (en) * | 2018-11-29 | 2021-09-10 | 武汉钢铁有限公司 | Method for establishing coal quality comparison evaluation model among different coking coal types |
| CN110739029B (en) * | 2019-09-20 | 2022-06-07 | 武汉钢铁有限公司 | Coal quality evaluation method and device |
| CN112288268B (en) * | 2020-10-28 | 2024-05-10 | 深圳市出新知识产权管理有限公司 | Thermal power generating unit coal quality identification method, thermal power generating unit control method and system |
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