CN104449778A - Method for carrying out coal source development by comprehensively applying coal petrography indexes - Google Patents
Method for carrying out coal source development by comprehensively applying coal petrography indexes Download PDFInfo
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
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Abstract
The invention relates to a method for carrying out coal source development by comprehensively applying coal petrography indexes. The method comprises the following steps of: I, carrying out coal petrography analysis on a new coal type, and judging coal as a single coal type when reflectivity standard deviation is less than 0.10; II, analyzing the coal quality indexes on the coal, and comparing ash content, volatile content, sulfur content, a caking index G value and a colloidal layer thickness Y value with those of a coal type which is in use; III, evaluating the coking property of the new coal type by using an experimental coke oven, and comparing with a substituted coal type, wherein coke strength indexes include M40, M10, CRI and CSR; IV, substituting the new coal type for the coal type which is in use according to the proportion of 4%-18%, and experimenting two coal blending schemes by using two experimental coke furnaces, wherein the coke strength indexes include M40, M10, CRI and CSR; V, trying to use the new coal type on an industrial 7.63 m coke furnace, and inspecting the coke strength indexes including M40, M10, CRI and CSR. The method disclosed by the invention can be used for partially or wholly substituting the coal resource which is in use so as to widen the selecting range of the coal resource.
Description
Technical field
The present invention relates to a kind of method that integrated use coal petrography index carries out the exploitation of coal source.
Background technology
Along with continuous consumption and the minimizing of high-quality caking coal resource, develop new coal resource, carry out existing resource partly or entirely substituting the important process day by day becoming coal chemical enterprise.Along with the diversification of coal resource purchase channel, ore deposit point is many, and ature of coal is mixed, and it is more and more frequent that the situation fluctuating large occurs, traditional technical analysis index has been difficult to meet the requirement performance of coal resource being carried out to thoroughly evaluating.Coal petrography analysis, as obtaining the technique means wideling popularize application in the last few years, plays more and more important effect in ature of coal qualification with coal property evaluation.Better utilization coal petrography index is carried out coal property evaluation and substitutes existing resource, is conducive to widening coal resource Application Range, guarantees the stable supply of coal resource.The method of existing technical analysis metrics evaluation coal effectively can not carry out analysis and identification to the mixture of coal, therefore exists significantly not enough when carrying out coal resource and substituting and develop.
Summary of the invention
The above-mentioned deficiency of the method for coal source exploitation is carried out in order to overcome existing integrated use coal petrography index, the invention provides one partly or entirely substitutes with coal resource, widen coal resource Application Range, thus Optimized Coal Blending scheme, guarantee that coal resource stablizes the method that the integrated use coal petrography index low with coal blending cost carries out the exploitation of coal source.
The method that this integrated use coal petrography index carries out the exploitation of coal source comprises following step successively:
icoal petrography analysis is carried out to selected new coal, mainly vitrinite reflectance analysis, if it is single grade coal that analytical results shows this coal, then enter next link; If it is mixed coal that analytical results shows this coal, then stop the further research to this kind of coal resource; The relation of coal and reflectivity is as follows;
During reflectivity average scope 0.55-0.7, coal is bottle coal;
During reflectivity average scope 0.70-0.85, coal is 1/3 coking coal;
During reflectivity average scope 0.85-1.20, coal is rich coal;
During reflectivity average scope 1.20-1.80, coal is coking coal;
During reflectivity average scope 1.80-2.00, coal is lean coal;
Average identifies that this coal is the leading indicator of which kind of coal, and identify that a certain coal be the leading indicator of single coal is reflectivity standards deviation, its qualification mode is as follows:
During reflectivity standards deviation < 0.10, this coal is judged to be single coal; When reflectivity standards deviation is not less than 0.10, this coal is judged to be mixed coal;
Mixed coal is divided further, when reflectivity standards deviation is between 0.10-0.20, this coal is judged to be simple mixed coal, namely this coal is that do as one likes matter is close but still be not two kinds of coal mixtures of same coal class.
During reflectivity standards deviation > 0.20, this coal is judged to be complicated mixed coal, namely this coal is by two kinds and or the two or more character coal mixture that differs greatly
iIto the coal index analysis of selected coal being judged to be single grade coal, comprise ash content, volatile matter, sulphur content, adhesive index value, thickness of colloidal matter layer Y value, further judgement ature of coal, and compare with the coal of known performance, find the coal that may substitute in selected coal;
iII40kg Experiment Coke Oven is used to carry out new coal single grade coal coking performance evaluation, and compared with intending the experimental result of the coal substituted, paper examines Indexes on Coke Strength M40, M10 and CRI, CSR, proximity judges, new coal is as follows with the coal institute coking charcoal strength difference scope intending substituting:
Intensity index M40 strength difference scope ± 1.0%;
Intensity index M10 strength difference scope ± 0.5%;
Intensity index CRI strength difference scope ± 1.5%;
Intensity index CSR strength difference scope ± 2.0%;
iVmixed coal scheme is tested, with new coal by 4%-18% ratio substitute coal, two Coal Blending Schemes use 40kg Experiment Coke Ovens to test under same experimental conditions, and compare refined Indexes on Coke Strength, and feasibility judgement is as follows:
Intensity index M40 strength difference scope ± 1.0%;
Intensity index M10 strength difference scope ± 0.5%;
Intensity index CRI strength difference scope ± 1.5%;
Intensity index CSR strength difference scope ± 2.0%;
voperable new coal is evaluated in earlier stage to single grade coal on probation on industrial 7.63m coke oven, follow the tracks of coke quality synthesis coke data, judge the service condition of new coal on industrial coke oven, the ratio that new coal substitutes is according to step IV experimental result, select satisfactory substitution ratio to determine, the coal institute coking charcoal strength values scope specific requirement substituted is as follows:
Intensity index M40 strength difference scope >=89.0%;
Intensity index M10 strength difference scope≤5.5%;
Intensity index CRI strength difference scope≤25.0%;
Intensity index CSR strength difference scope >=68.0%.
Above-mentioned integrated use coal petrography index carries out the method for coal source exploitation, it is characterized in that: in step
iVin, new coal be in 5%-14% ratio substitute coal; In step
vin the ratio that substitutes of new coal be 5%-10%.Operate more convenient.
Above-mentioned integrated use coal petrography index carries out the method for coal source exploitation; Through step
ito step
vsatisfactory new coal can formally use as available Mei Yuanjin factory.
Above-mentioned integrated use coal petrography index carries out the method for coal source exploitation, it is characterized in that in step
vtime, the method for concrete tracking coke quality is as follows:
(1) dispatch the coal bunker that soars in advance, the mixed coal of dress new coal on probation, and after guaranteeing the whole adapted of test mixed coal, reinstall the mixed coal of other proportionings;
(2) coal is arranged to soar in turn in advance coal damping coal tank for coal damping operation;
(3) scheduling spot check enters the coal of coal tower is the mixed coal testing new coal;
(4) coking process district record is arranged to load the beginning heat (batch) number of the new coal mix proportion scheme mixed coal of test and terminate heat (batch) number, and by data reporting scheduling room;
(5) the burnt working district of fortune is arranged to sample in time the barrate strength that does new coal on probation proportioning institute used coking charcoal and entirely burntly to analyze;
(7) the burnt working district of fortune is arranged to soar coke bin in turn for temporary transient shelf test coke in advance;
(8) coke sample that new coal blend ratio on probation refines is adopted in inspection chemical examination working district, does technical analysis and hot strength.
beneficial effect of the present invention
This technical analysis index carries out the method for coal source exploitation, is also the method finding new coal replacement raw coal.This
Method with coal petrography index (vitrinite reflectance) for technical way, in conjunction with conventional index (ash content, sulphur content, G value, Y value etc.), 40kg Experiment Coke Oven coking index (M40, M10, CRI, etc. CSR) integrated evaluating method of new coal to coal substitutability is constructed, industrial experiment is carried out again by being tightly organized on 7.63m coke oven, define the coal resource development approach that a whole set of operability is extremely strong, coal partly or entirely can be substituted, widen coal resource Application Range, optimize Blending, coal resource is made to protect for more stable, coke quality index is stablized, coal blending cost is controlled.
Apply the method in coke making and coal blending work after, since 2013, every coke quality index is all in the indication range of applicant, and the kind of available new coal increases, and Blending is more reasonable, and coal blending cost reduces.The whole year in 2013 uses 59557.21 tons, Lvliang City's coking coal altogether, by monthly Lvliang City's coking coal with the actual settlement price mathematic interpolation of coking coal A, saving coal blending cost 530.63 ten thousand yuan; 4590 tons, the little kiln coking coal of Poly on probation, by Poly coking coal and with coking coal B price mathematic interpolation, saves coal blending cost 9.18 ten thousand yuan; Use holy 6002.404 tons, Buddhist 1/3 coking coal, by holy Buddhist 1/3 coking coal and with 1/3 coking coal price mathematic interpolation, save coal blending cost 18.0 ten thousand yuan, annual total saves coal blending cost 557.81 ten thousand yuan.
Embodiment
The specific embodiment of the present invention is described in detail below in conjunction with embodiment, but specific embodiment of the invention side
Formula is not limited to following embodiment.
Embodiment
The new coal of a kind of Luliang Prefecture's coking coal, its coal substituted is coking coal A, and feasibility decision process is as follows:
1, coal petrography analysis is carried out to selected new coal, and compare with coal.Vitrinite reflectance and distribution results thereof are in table 1.
Table 1
| Sample | Reflectance value | Standard deviation | Type | <0.9 | 0.9-1.2 | 1.2-1.8 | 1.8-2.0 |
| Lvliang City's coking coal | 1.424 | 0.083 | Single coal | 0.0 | 0.0 | 100.0 | 0.0 |
| Using coking coal A | 1.468 | 0.092 | Single coal | 0.0 | 0.0 | 100.0 | 0.0 |
Through coal petrography index analysis, Lvliang City's coking coal is single grade coal, and with close by coking coal A coal petrography index.
2, carry out coal index analysis, and with comparing by coking coal A index.Conventional index analytical results is in table 2.
Table 2
| Sample | A d/% | V daf/% | S t，d/% | G | Y/mm | X/mm |
| Lvliang City's coking coal | 9.60 | 21.14 | 0.94 | 86 | 15 | 31.3 |
| Using coking coal A | 9.74 | 19.81 | 1.23 | 80 | 15 | 30.8 |
As can be known from the above table, Lvliang City's coal belongs to the higher coking coal of a kind of typical caking index, and compared with coking coal A, Lvliang City's coking coal ash content sulphur content is low, and volatile matter is high, and adhesive index value is high, and coal index has alternative feasibility.
3, use 40kg Experiment Coke Oven to carry out new coal single grade coal coking performance evaluation, and compared with intending the experimental result of the coal substituted, independent coking gained Indexes on Coke Strength is in table 3.
Table 3
| Sample | M40% | M10% | CRI% | CSR% |
| Lvliang City's coking coal coke | 84.8 | 9.3 | 24.8 | 65.2 |
| With coking coal A coke | 85.2 | 8.8 | 25.4 | 66.3 |
With compared with coking coal A institute coking charcoal, coking charcoal index M10 is higher in Lvliang City's coking coal institute, and hot reactivity is slightly low, and post-reaction strength is lower slightly, but all can accept in disparity range.
4, utilize 40kg Experiment Coke Oven, carry out Lvliang City's coking coal and partly or entirely substitute and testing with the coal blending of coking coal A, concrete Coal Blending Schemes is in table 4.Rich coal in table 4 is rich coal A and rich coal B two kinds.
Table 4
Coal blending experimental result is in table 5.
Table 5
| Experimental program | M40% | M10% | CRI% | CSR% |
| Scheme 1 | 82.1 | 6.2 | 26 | 63.5 |
| Scheme 2 | 83.7 | 6.2 | 25.2 | 65.2 |
| Scheme 3 | 82.2 | 7.2 | 24.6 | 64.6 |
| Scheme 4 | 81.9 | 7.5 | 26.7 | 61.2 |
From coal blending experimental result, Lvliang City's coking coal substitutes best by (scheme 1) gained coke quality index during coking coal A5%, and cold strength M40 raises, reactive reduction, and post-reaction strength increases; After Lvliang City's coking coal allocates 10% and 15% into, coke M10 index obviously raises, and the indexs such as post-reaction strength obviously reduces, M10 and CSR obviously exceed can accept difference range, illustrate Lvliang City's coking coal can only Some substitute with the effect of coking coal A in whole Blending.
5, use 7.63m coke oven to carry out Lvliang City's coking coal Some substitute with coking coal A industrial experiment, test concrete organizational process as described in technical scheme and design part, specific experiment gained coke quality result is as shown in table 6.
Table 6
| Experimental program | M40% | M10% | CRI% | CSR% |
| Using coking coal A5% | 90.0 | 5.1 | 22.9 | 70.5 |
| Lvliang City's coking coal 5% | 90.0 | 5.2 | 23.0 | 70.3 |
From test gained coke quality index, Lvliang City's coking coal 5% substitutes and is having no significant effect by coking coal A Coke Quality index, formally can enter factory and use.
6, Lvliang City's coking coal formally enters factory in March, 2013 as new coal and uses, and Some substitute is using coking coal A, and the whole year uses 59557.21 tons altogether, by monthly Lvliang City's coking coal with the actual settlement price mathematic interpolation of coking coal A, saving coal blending cost 530.63 ten thousand yuan.
Claims (5)
1. integrated use coal petrography index carries out a method for coal source exploitation, and it comprises following step successively:
icoal petrography analysis is carried out to selected new coal, mainly vitrinite reflectance analysis, if it is single grade coal that analytical results shows this coal, then enter next link; If it is mixed coal that analytical results shows this coal, then stop the further research to this kind of coal resource; The relation of coal and reflectivity is as follows;
During reflectivity average scope 0.55-0.7, coal is bottle coal;
During reflectivity average scope 0.70-0.85, coal is 1/3 coking coal;
During reflectivity average scope 0.85-1.20, coal is rich coal;
During reflectivity average scope 1.20-1.80, coal is coking coal;
During reflectivity average scope 1.80-2.00, coal is lean coal;
Average identifies that this coal is the leading indicator of which kind of coal, and identify that a certain coal be the leading indicator of single coal is reflectivity standards deviation, its qualification mode is as follows:
During reflectivity standards deviation < 0.10, this coal is judged to be single coal; When reflectivity standards deviation is not less than 0.10, this coal is judged to be mixed coal;
iIto the coal index analysis of selected coal being judged to be single grade coal, comprise ash content, volatile matter, sulphur content, adhesive index value, thickness of colloidal matter layer Y value, further judgement ature of coal, and compare with the coal of known performance, find the coal that may substitute in selected coal;
iII40kg Experiment Coke Oven is used to carry out new coal single grade coal coking performance evaluation, and compared with intending the experimental result of the coal substituted, paper examines Indexes on Coke Strength M40, M10 and CRI, CSR, proximity judges, new coal is as follows with the coal institute coking charcoal strength difference scope intending substituting:
Intensity index M40 strength difference scope ± 1.0%;
Intensity index M10 strength difference scope ± 0.5%;
Intensity index CRI strength difference scope ± 1.5%;
Intensity index CSR strength difference scope ± 2.0%;
iVmixed coal scheme is tested, with new coal by 4%-18% ratio substitute coal, two Coal Blending Schemes use 40kg Experiment Coke Ovens to test under same experimental conditions, and compare refined Indexes on Coke Strength, and feasibility judgement is as follows:
Intensity index M40 strength difference scope ± 1.0%;
Intensity index M10 strength difference scope ± 0.5%;
Intensity index CRI strength difference scope ± 1.5%;
Intensity index CSR strength difference scope ± 2.0%;
voperable new coal is evaluated in earlier stage to single grade coal on probation on industrial 7.63m coke oven, follow the tracks of coke quality synthesis coke data, judge the service condition of new coal on industrial coke oven, the ratio that new coal substitutes is according to step IV experimental result, select satisfactory substitution ratio to determine, the coal institute coking charcoal strength values scope specific requirement substituted is as follows:
Intensity index M40 strength difference scope >=89.0%;
Intensity index M10 strength difference scope≤5.5%;
Intensity index CRI strength difference scope≤25.0%;
Intensity index CSR strength difference scope >=68.0%.
2. integrated use coal petrography index according to claim 1 carries out the method for coal source exploitation, it is characterized in that: in step
iVin, new coal be in 5%-14% ratio substitute coal; In step
vin the ratio that substitutes of new coal be 5%-10%.
3. integrated use coal petrography index according to claim 1 and 2 carries out the method for coal source exploitation; It is characterized in that: through step
ito step
vsatisfactory new coal can formally use as available Mei Yuanjin factory.
4. integrated use coal petrography index according to claim 1 and 2 carries out the method for coal source exploitation, it is characterized in that in step
vtime, the method for concrete tracking coke quality is as follows:
(1) dispatch the coal bunker that soars in advance, the mixed coal of dress new coal on probation, and after guaranteeing the whole adapted of test mixed coal, reinstall the mixed coal of other proportionings;
(2) coal is arranged to soar in turn in advance coal damping coal tank for coal damping operation;
(3) scheduling spot check enters the coal of coal tower is the mixed coal testing new coal;
(4) coking process district record is arranged to load the beginning heat (batch) number of the new coal mix proportion scheme mixed coal of test and terminate heat (batch) number, and by data reporting scheduling room;
(5) the burnt working district of fortune is arranged to sample in time the barrate strength that does new coal on probation proportioning institute used coking charcoal and entirely burntly to analyze;
(7) the burnt working district of fortune is arranged to soar coke bin in turn for temporary transient shelf test coke in advance;
(8) coke sample that new coal blend ratio on probation refines is adopted in inspection chemical examination working district, does technical analysis and hot strength.
5. integrated use coal petrography index according to claim 3 carries out the method for coal source exploitation, it is characterized in that in step
vtime, the method for concrete tracking coke quality is as follows:
(1) dispatch the coal bunker that soars in advance, the mixed coal of dress new coal on probation, and after guaranteeing the whole adapted of test mixed coal, reinstall the mixed coal of other proportionings;
(2) coal is arranged to soar in turn in advance coal damping coal tank for coal damping operation;
(3) scheduling spot check enters the coal of coal tower is the mixed coal testing new coal;
(4) coking process district record is arranged to load the beginning heat (batch) number of the new coal mix proportion scheme mixed coal of test and terminate heat (batch) number, and by data reporting scheduling room;
(5) the burnt working district of fortune is arranged to sample in time the barrate strength that does new coal on probation proportioning institute used coking charcoal and entirely burntly to analyze;
(7) the burnt working district of fortune is arranged to soar coke bin in turn for temporary transient shelf test coke in advance;
(8) coke sample that new coal blend ratio on probation refines is adopted in inspection chemical examination working district, does technical analysis and hot strength.
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| CN105062531A (en) * | 2015-08-12 | 2015-11-18 | 中钢集团鞍山热能研究院有限公司 | Coking raw material applicability classification, comprehensive quality evaluation and coal blending guiding method |
| CN108254403A (en) * | 2017-12-22 | 2018-07-06 | 黑龙江建龙化工有限公司 | A kind of evaluation method of single grade coal supplying coking effect |
| CN109423317A (en) * | 2017-08-23 | 2019-03-05 | 宝山钢铁股份有限公司 | A method of control production coal blending coking capacity is stable |
| CN111117669A (en) * | 2020-01-07 | 2020-05-08 | 武钢集团昆明钢铁股份有限公司 | Method for distinguishing classification of coking coal types and application thereof |
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| CN112881645A (en) * | 2021-02-19 | 2021-06-01 | 汾渭数字信息技术有限公司 | Method for accurately predicting coke cold strength by introducing coal rock components |
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| JPS6187787A (en) * | 1984-10-05 | 1986-05-06 | Nippon Steel Chem Co Ltd | Method for controlling blend of coal for production of coke |
| CN102890144B (en) * | 2012-10-22 | 2014-11-05 | 辽宁科技大学 | Method for predicting coke quality through nonlinear optimization coal blending based on coal rock vitrinite total reflectance |
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| CN108254403A (en) * | 2017-12-22 | 2018-07-06 | 黑龙江建龙化工有限公司 | A kind of evaluation method of single grade coal supplying coking effect |
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| CN112881645A (en) * | 2021-02-19 | 2021-06-01 | 汾渭数字信息技术有限公司 | Method for accurately predicting coke cold strength by introducing coal rock components |
| CN113736502A (en) * | 2021-09-16 | 2021-12-03 | 天津铁厂有限公司 | Method for carrying out coal blending and coking experiment by using industrial coke oven |
| CN113736502B (en) * | 2021-09-16 | 2024-01-19 | 天津铁厂有限公司 | Method for carrying out coal blending coking experiment by utilizing industrial coke oven |
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