CN104694145B - The coke and coking process of a kind of adapted Indonesia bottle coal - Google Patents
The coke and coking process of a kind of adapted Indonesia bottle coal Download PDFInfo
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- CN104694145B CN104694145B CN201310649633.0A CN201310649633A CN104694145B CN 104694145 B CN104694145 B CN 104694145B CN 201310649633 A CN201310649633 A CN 201310649633A CN 104694145 B CN104694145 B CN 104694145B
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- C—CHEMISTRY; METALLURGY
- 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
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
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Abstract
The invention discloses the coke and coking process of a kind of adapted Indonesia bottle coal, the volatile matter height, caking property height, degree of metamorphism for mainly solving Indonesia's bottle coal in the prior art are low, it is poor with the amalgamation of other coking coals, it is difficult to the technical issues of high-quality smelter coke of stable quality is produced for coal-blending coking.The technical scheme is that：A kind of coke of adapted Indonesia bottle coal is formed by following mass percent coal blending mixed coking：1/3 coking coal 10%~15%, Indonesia's bottle coal 5%~10%, bottle coal 15%~20%, rich coal 20%~25%, coking coal 30%~40%, lean coal 4%~8%.The present invention proposes corresponding Con trolling index according to the characteristics of Indonesia's bottle coal, i.e., with components of coal ash and substitutes coal so that when participating in coal-blending coking production using this Indonesia's bottle coal resource, ensure that the stabilization of coke quality.
Description
Technical field
The present invention relates to a kind of coke and coking process, the coke of more particularly to a kind of adapted Indonesia bottle coal and coking side
Method belongs to technical field of coal chemical industry.
Background technology
In Coking Coal Blending Technology, the selection of coal is a key technology.The height of coal selection technique level is not only
It decides the height of coke quality, also determines the height of the coal blending cost on the basis of coke quality is ensured.
In recent years, with the expansion of Chinese coking production capacity, the contradiction of high-quality caking coal shortage of resources is also outstanding day by day, especially
It is that high-quality coking coal is more nervous as the important coal supply of coke making and coal blending, becomes one of focus of each coal chemical enterprise contention.Respectively
Coal chemical enterprise has to seek new resource in foreign countries, since the coking coal condition of coal formation of various regions is different, although volatile matter and viscous
The characteristics of knot performance indicator meets the criteria for classification of China coking coal, but its coking characteristic and geological characteristics etc. have itself,
This brings difficulty to the application of these import coals.
The degree of metamorphism of Indonesia's bottle coal is relatively low, and China import Indonesia bottle coal mostly uses, and have correlation as thermal coal
Document disclose, and to being used for coal-blending coking, applicant has no relevant report.
Document《Coal-burning power plant's coal mixing combustion experimental study》（Hubei Electric Power, 2011（5））A kind of Indonesia is described in one text
Burning of coal characteristic, by the control in relation to operating parameter to ensure the safe operation of boiler and pulverized coal preparation system.
Document《Boiler, which changes, burns Indonesia coal examination burning and Economic and Efficiency Analysis》（BJ Power High Level Training School's journal：It is natural
Science version, 2012（7））A kind of Indonesia's coal resources are described in one text, resource reserve is 58,000,000,000 tons, proven reserve 19,300,000,000
Ton.In today that the energy is increasingly in short supply, the exploitation of Indonesia coal seems very there is realistic meaning.To find new coal source and reduction
The operation cost of power plant has carried out combustion test, and achieve success to Indonesia coal.
Experimental study and production application have been carried out to Indonesia's bottle coal in above-mentioned document, have been mainly used in boiler combustion field,
It is not applied to coal-blending coking technical field.The main reason is that the degree of metamorphism of Indonesia's bottle coal is low, volatile matter is high, to a certain degree
On can cause the decline of coke quality.
A kind of volatile matter of Indonesia's bottle coal is between 39%~41%, maximum vitrinite reflectance 0.55%~0.65%；Bonding refers to
Number G is more than 85~90, maximum thick ness of plastic layer Y16~20mm.The coal belongs to bottle coal QM45 by CHINESE COAL classification, but it volatilizees
It is point high and caking property is also high, different from domestic common bottle coal.
In addition, due to its volatile matter height, degree of metamorphism is low, poor with the amalgamation of other coking coals, exists to Indonesia's bottle coal
The production application of coal-blending coking brings difficulty.
Invention content
The object of the present invention is to provide the coke and coking process of a kind of adapted Indonesia bottle coal, mainly solve in the prior art
The volatile matter of Indonesia's bottle coal is high, caking property is high, degree of metamorphism is low, poor with the amalgamation of other coking coals, it is difficult to be refined for coal blending
Coke produces the technical issues of high-quality smelter coke of stable quality.So that after adding in Indonesia's bottle coal in coal blending raw material, meet
It under conditions of certain coal blending quality requirement, can ensure that the quality of coal blending reaches high-quality coking coal index, can be given birth on the dress coke oven of top
The high-quality smelter coke that output quality is stablized.
The technical solution adopted by the present invention is：
A kind of coke of adapted Indonesia bottle coal is formed by following mass percent coal blending mixed coking：1/3 coking coal 10%~
15%, Indonesia's bottle coal 5%~10%, bottle coal 15%~20%, rich coal 20%~25%, coking coal 30%~40%, lean coal 4%~8%.
A kind of coking process of adapted Indonesia bottle coal, includes the following steps：
A, by following mass percent coal blending, 1/3 coking coal 10%~15%, Indonesia coal 5%~10%, bottle coal 15%~20%, fertilizer
Coal 20%~25%, coking coal 30%~40%, lean coal 4%~8%；
B, Mixture Density Networks crush, and the Mixture Density Networks after coal blending in step a are crushed, and Mixture Density Networks of the grain size less than 3mm is preferably made to account for it
The 75%~80% of gross mass；
Broken Mixture Density Networks are sent into top dress coking by coke oven by c, coal-blending coking, and coking temperature is 1000 ± 50 DEG C, knot
The burnt time is 20 ± 2 hours；
D, it discharges of the coke postcooling.
Coke quality detection is carried out later, measures the fingers such as coke ash, sulfur content in coke, coke reactivity and post reaction strength
Mark.
Further, the postcooling of the discharging of the coke described in step d of the present invention cools down coke using nitrogen（Also known as dry coke quenching cools down）,
With the coke of nitrogen cooling red heat, the moisture of coke can be not only reduced, but also the variation of coke chilling can be reduced, avoid coke
The decline of charcoal intensity.It can be recycled for heat power generation etc., so as to avoid energy waste with the nitrogen after coke heat exchange.
The Coal Characteristics of Indonesia's bottle coal of institute's adapted are as follows in the present invention：Volatilization is divided into 39%~41%, and maximum vitrinite is anti-
Penetrate rate 0.55%~0.65%；Adhesive index is more than 85~90, maximum thick ness of plastic layer Y16~20mm.
The classification that the coal quality of above-mentioned other various single coking coals used meets in corresponding chinese national standard refers to
Mark.
Above-mentioned coal blending certain mass requires to refer to that the adhesive index value of Mixture Density Networks after coal blending is 75~85, and gelatinous layer is maximum
14~17mm of thickness.
The requirement of above-mentioned coal blending quality is derived from the mass property research to Indonesia's bottle coal.Indonesia's bottle coal is found by research
Volatile matter be up to 39%~41%, but maximum vitrinite reflectance is 0.55%~0.65%, is remained at low levels, from reflectivity
It sees that a part strides into the range of jet coal and bottle coal on distribution map, therefore proposes that the coal replaces part bottle coal and jet coal, with
Reduce the influence to coal blending quality.
After experiment shows above-mentioned technical proposal using the present invention, the not only macro-indicators adhesive index of mixed coal（Table
Levy the bonding itself of coking coal and the ability of inert material）75 can be more than, maximum thickness of colloidal matter layer Y（Characterize the coking of coking coal
Gel quantity is generated in the process）14mm can be more than；The drum strength DI of coke completely can be more than 85%, after coke gasification reaction
Intensity（CSR）65% can be more than, therefore disclosure satisfy that 3000m3And the needs of Yi Shang blast furnace process.
The present invention has following good effect compared with prior art：
1st, coking coal resource is expanded, reduces coal blending production cost.Break what Indonesia's bottle coal was used as thermal coal
Indonesia's bottle coal is replaced part part bottle coal and jet coal to be applied to coal-blending coking, expands the range of coking coal by conventional thought,
Resource is made to obtain Optimum utilization；The market price of Indonesia's bottle coal is generally relatively low, therefore reduces coal blending by the adapted of Indonesia coal
Production cost.
2nd, coke quality is maintained.The present invention breaks through limitation of traditional national standard classification by coking coal application method coking, according to
The characteristics of Indonesia coal, proposes corresponding Con trolling index, by maintaining the matter of coke to matching components of coal ash and substituting the control of coal
Amount, ensure that coke meets the needs of blast furnace ironmaking.
3rd, the coke making and coal blending method of adapted Indonesia provided by the invention bottle coal, in the coke energy of common top dress coke oven production
Reach high-quality smelter coke quality requirement.
Specific embodiment
A kind of coke of adapted Indonesia of the invention bottle coal, is formed by following mass percent coal blending mixed coking：1/3 coking coal
10%~15%, Indonesia coal 5%~10%, bottle coal 15%~20%, rich coal 20%~25%, coking coal 30%~40%, lean coal 4%~8%.Specifically
Proportioning is shown in Table 1, and table 1 is specific embodiment, 1 non-adapted Indonesia bottle coal of scheme, 2 Indonesia's bottle coal proportioning 5% of scheme, 3 Indonesia's gas of scheme
Coal proportioning 8%, 4 Indonesia's bottle coal proportioning 10% of scheme.
A kind of coking process of adapted Indonesia bottle coal, includes the following steps：
A, by following mass percent coal blending, 1/3 coking coal 10%~15%, Indonesia's bottle coal 5%~10%, bottle coal 15%~20%,
Rich coal 20%~25%, coking coal 30%~40%, lean coal 4%~8%；
B, Mixture Density Networks crush, and the belt of the Mixture Density Networks in step a is sent into crusher in crushing, makes grain size mixed less than 3mm
It closes coal and accounts for the 75%~80% of its gross mass；
C, coal-blending coking, by broken Mixture Density Networks be sent into top dress coking by coke oven, coke furnace carbonization chamber height be 6m, coking
Temperature is 1000 DEG C, coking time 20h；
D, it is cooled down after the discharging of the coke with nitrogen（Also known as dry coke quenching cools down）Coke.
Coke quality detection is carried out later, measures the fingers such as coke ash, sulfur content in coke, coke reactivity and post reaction strength
Mark, measurement result are shown in Table 1.
The embodiment of the present invention pushes up charging coke coking using 6m, carries out coal blending with Indonesia's bottle coal, coal blending dry ash free basis is waved
Hair point (Vd) is 27~30%, and caking index is 75~85, and in the prior art with 1/3 coking coal, bottle coal, rich coal, coking coal and thin
Five class coal cokings of coal, obtain the coke for having quality essentially identical, post reaction strength of coke（CSR）It is 65%~70%.
1 coke making and coal blending of table（Mass percent）And coke quality tables of data
Scheme 2 to 4 measurement result of scheme can be seen that adapted Indonesia bottle coal substitution part bottle coal and long flame from upper table 1
After coal, each qualitative data of obtained coke and the data of the measurement of scheme 1 without adapted Indonesia bottle coal are essentially identical, completely may be used
To meet 3000m3And the needs of Yi Shang blast furnace process.
It is summed up, the present embodiment has the advantages that：
1st, coking coal resource is expanded.The conventional thought that Indonesia's bottle coal is used as coking coal is broken, Indonesia coal has been replaced
Part jet coal and bottle coal are applied to coal-blending coking, expand the range of coking coal, resource is made to obtain Optimum utilization.
2nd, coke quality is maintained.The Coal Blending Technology that Indonesia's bottle coal participates in passes through to maintaining coke to the control of coal blending quality
The quality of charcoal ensure that coke meets the needs of blast furnace ironmaking.
3rd, coal blending cost is reduced.The price of Indonesia's bottle coal is reduced less than similar Chinese Domestic Coal by coal-blending coking
Production cost.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
Into technical solution, all fall within the present invention claims protection domain.
Claims (5)
1. a kind of coke of adapted Indonesia bottle coal, it is characterized in that being formed by following mass percent coal blending mixed coking：1/3 coking coal
10%~15%, Indonesia's bottle coal 5%~10%, bottle coal 15%~20%, rich coal 20%~25%, coking coal 30%~40% is thin
Coal 4%~8%；The volatilization of Indonesia's bottle coal is divided into 39%~41%, and maximum vitrinite reflectance 0.55%~0.65% is glued
It ties index G and is more than 85~90, maximum thick ness of plastic layer Y16~20mm.
2. the coke of adapted Indonesia as described in claim 1 bottle coal, it is characterized in that, Mixture Density Networks need to be through broken after coal blending, grain size
The Mixture Density Networks of below 3mm account for the 75%~80% of its gross mass.
3. a kind of coking process of adapted Indonesia bottle coal, it is characterized in that including the following steps：
A, by following mass percent coal blending, 1/3 coking coal 10%~15%, Indonesia's bottle coal 5%~10%, bottle coal 15%~
20%, rich coal 20%~25%, coking coal 30%~40%, lean coal 4%~8%；The volatilization of Indonesia's bottle coal is divided into 39%~
41%, maximum vitrinite reflectance 0.55%~0.65%, adhesive index be more than 85~90, maximum thick ness of plastic layer Y16~
20mm；
B, Mixture Density Networks crush, and the Mixture Density Networks after coal blending in step a are crushed；
Broken Mixture Density Networks are sent into top dress coking by coke oven by c, coal-blending coking, and coking temperature is 1000 ± 50 DEG C, coking time
It is 20 ± 2 hours；
D, it discharges of the coke postcooling.
4. a kind of coking process of adapted Indonesia as claimed in claim 3 bottle coal, it is characterized in that, in the step a, after coal blending
Mixture Density Networks adhesive index value is 75~85,14~17mm of maximum thick ness of plastic layer.
5. a kind of coking process of adapted Indonesia as claimed in claim 3 bottle coal, it is characterized in that, in the step b, Mixture Density Networks
After broken, the Mixture Density Networks of below grain size 3mm account for the 75%~80% of its gross mass.
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| CN113637496A (en) * | 2020-04-27 | 2021-11-12 | 宝山钢铁股份有限公司 | Microwave heating-based coking method |
| CN115141665A (en) * | 2021-03-29 | 2022-10-04 | 上海梅山钢铁股份有限公司 | Coke for matching Australian gas coal and coking method |
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