CN103146407B - Coking coal blending method of wide carbonization chamber coke oven - Google Patents
Coking coal blending method of wide carbonization chamber coke oven Download PDFInfo
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Abstract
The invention discloses a coking coal blending method of a wide carbonization chamber coke oven. The method comprises a step of blending various single coking coals, wherein each single coking coal comprises the following components in percentage by weight: 16-25% of lean coal and meager lean coal, 10-20% of fat coal 1#, 17-29% of 1/3 coking coal, 15-20% of coking coal 1#, 6-20% of coking coal 2#, 5-10% of coking coal 3#, 6-10% of gas-fat coal and fat coal 2# and the balance of other random available coking coal of which the volatile component content Vdaf is less than or equal to 35%; the maximum Gieseler fluidity of the compound coal is 600-1,400ddpm; and the volatile components account for 24-27%. The method disclosed by the invention effectively reduces the coal preparation cost, overcomes adverse impact on the high-temperature flowing property of the coking coal caused by the heating speed reduction in a coking process of the wide carbonization chamber coke oven, effectively reduces the graphite accumulation speed on the oven top and improves the coke quality and the coke output.
Description
Technical field
The invention belongs to metallurgical coking technology field, be specifically related to a kind of coke making and coal blending method of coking chamber coke oven with width.
Background technology
Each coking enterprise is owing to being subject to the impact of coking coal resource purchase channel, and simultaneously in order to stablize coke quality, the usage ratio of general tree bottle coal, gas-fat coal, rich coal, 1/3 coking coal, coking coal and the large class of these coking coals of lean coal is done significantly to adjust.Tradition Coal Blending Technology is used coking coal in order to produce high grade coke vast scale, coking coal allocation ratio is up to 60%, lean coal, meager lean coal are because agglutinating value(of coal) is poor and substantially do not have temperature flowing performance, so adapted ratio lower (generally lower than 8%) or even use in coke making and coal blending.
7.63 meters of coke ovens are super-huge coke ovens of a kind of wide coking chamber of introducing from Germany in recent years, and successively the large-scale steel enterprise subordinate of several families coke-oven plant is constructed and put into operation at home.7.63 meters of wide 590mm of coke furnace carbonization chamber, design coking time 25.8 hours, and domestic 6 meters of wide 450mm of coke furnace carbonization chamber that generally adopt, design coking time 19 hours.Because the heat-up rate in coal charge in 7.63 meters of coke furnace carbonization chambers especially coking chamber center coal charge coking process is than 6 meters of traditional coke ovens slow approximately 26%, continuation is carried out coal-blending coking according to the coke making and coal blending method of 6 meters of coke ovens, the temperature flowing of mixed coal is by remarkable variation, thereby mixed coal can not get being fully mixed between Coal rank in heating coking process, also just can not get the coke of quality homogeneous.In addition, in the situation that the mixed coal volatile matter in coking chamber is higher, be subject to the thermogenetic coal gas amount can be larger, because coal gas generates graphite being greater than under 850 ℃ of hot conditionss again easily pyrolysis, and 7.63 meters of coke ovens adopt three sections of heating, carbonization chamber furnace top room temps is difficult to control than 6 meters of coke ovens, general high approximately 40 ℃ than 6 meters of coke ovens of furnace roof room tempss, higher furnace roof room temps can be accelerated the speed of furnace roof calculus China ink, therefore, the high oven top of coke oven calculus of mixed coal volatile matter China ink is serious, and monthly there is empty the burning 4～5 hours that need not coaling after 30 stove coke pushings some coke-oven plants.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of coke making and coal blending method of coking chamber coke oven with width, according to the method, carry out coal-blending coking, not only can effectively overcome 7.63 meters of coking chamber coke oven with width coking process heat-up rates and reduce the disadvantageous effect to coking coal temperature flowing performance, and can effectively slow down furnace roof calculus China ink speed.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A coke making and coal blending method for coking chamber coke oven with width, comprises the step that each single kind coking coal is mixed, and described each single coking coal of planting comprises lean coal, meager lean coal, rich coal 1#, rich coal 2#, 1/3 coking coal, gas-fat coal, coking coal 1#, coking coal 2#, coking coal 3#;
Each single weight percent of planting coking coal is: lean coal and meager lean coal: 16～25%; Rich coal 1#:10～20%, 1/3 coking coal: 17～29%; Coking coal 1#:15～20%, coking coal 2#:6～20%, coking coal 3#:5～10%; Gas-fat coal and rich coal 2#:6～10%; Surplus is other volatile matter V arbitrarily
daf≤ 35% utilized coking coal;
And mixed coal: maximum Giseeler fluidity is 600～1400ddpm, 24%≤V
daf≤ 27%;
The volatile matter V of described lean coal and meager lean coal
dafbe 10.0～20.0%, adhesive index>=10;
The volatile matter V of described coking coal 1#
dafbe 20.0～28.0%, adhesive index>=84, maximum thickness of plastic layer Y>=16mm, maximum Giseeler fluidity lgMF>=2.8, Gu-softening temperature interval>=84 ℃;
The volatile matter V of described coking coal 2#
dafbe 20.0～28.0%, adhesive index is 80～84, maximum thickness of plastic layer Y>=14mm, and coking coarse grain pattern structure ratio is 46～54%;
The volatile matter V of described coking coal 3#
dafbe 20.0～28.0%, adhesive index is 70～80;
The volatile matter V of described rich coal 1#
dafbe 28.0～33.0%, adhesive index > 90, maximum thickness of plastic layer Y> 25.0mm, maximum Giseeler fluidity lgMF>=4.3, Gu-100 ℃ of interval > of softening temperature;
The volatile matter V of described rich coal 2#
dafbe 33.0～37.0%, adhesive index > 90, maximum thickness of plastic layer Y> 25.0mm, maximum Giseeler fluidity lgMF>=4.6, Gu-the interval >100 ℃ of softening temperature;
The volatile matter V of described 1/3 coking coal
dafbe 28.0～34.0%, adhesive index>=85, maximum thickness of plastic layer Y is 16～22mm, maximum Giseeler fluidity lgMF>=3.0, Gu-80 ℃ of interval > of softening temperature;
The volatile matter V of described gas-fat coal
daffor > 37.0%, adhesive index > 90, maximum thickness of plastic layer Y> 25.0mm, maximum Giseeler fluidity lgMF>=4.8, Gu-95 ℃ of interval > of softening temperature.
Further, described mixed coal: maximum Giseeler fluidity is 1000～1200ddpm.
Further, described each single weight percent of planting coking coal is: lean coal and meager lean coal: 18～21%; Rich coal 1#:12～18%; 1/3 coking coal: 20～25%; Gas-fat coal and rich coal 2#:6～8%; Coking coal 1#:16～20%; Coking coal 2#:8～15%; Coking coal 3#:6～8%; Surplus is other volatile matter V arbitrarily
daf≤ 35% utilized coking coal.
Further, described each single weight percent of planting coking coal is: lean coal and meager lean coal: 18～21%; Rich coal 1#:12～16%; 1/3 coking coal: 20～24%; Gas-fat coal and rich coal 2#:6～7%; Coking coal 1#:17～20%; Coking coal 2#:8～11%; Coking coal 3#:6～8%; Surplus is other volatile matter V arbitrarily
daf≤ 35% utilized coking coal.
The present invention has advantages of as follows:
1) by strengthening lean coal and the meager lean coal amount of allocating into (at present, 7.63 meters of coke oven lean coals of domestic coal chemical enterprise and meager lean coal adapted amount sum are up to 12%) in mixed coal, can effectively reduce the cost of coal blending.
2) the present invention's research shows: after heat-up rate reduces, gas-fat coal, rich coal, the equal variation of temperature flowing of 1/3 coking coal and coking coal, and the reduction of heat-up rate is different (in Table 1) to the influence degree of different sorts coking coal temperature flowing performance, and lean coal and meager lean coal are owing to just not having mobility when the normal heat-up rate, therefore the reduction of heat-up rate does not exert an influence to the high temperature thermal characteristics of lean coal and meager lean coal, increasing lean coal and the allocate amount of meager lean coal in mixed coal and the maximum Giseeler fluidity of mixed coal being controlled is simultaneously that the maximum Giseeler fluidity of 6 meters of coke oven mixed coals of 600～1400ddpm(tradition is controlled at 300～1000ddpm), can alleviate wide coking chamber furnace coking process heat-up rate and reduce the disadvantageous effect to coking coal temperature flowing performance, mixed coal can be mixed fully between Coal rank in heating coking process, thereby obtain the coke of quality homogeneous, improve coke output Simultaneous Stabilization coke quality.
The impact of the reduction of table 1 heat-up rate on Coal rank temperature flowing performance
3) due to lean coal and meager lean coal volatile matter lower; the increase of its amount of allocating in mixed coal, can effectively reduce the volatile matter of mixed coal, thereby slows down furnace roof calculus China ink speed; avoid affecting coke oven and normally produce, alleviate operator except graphite workload and protection coke oven top furnace wall.Each correlation parameter is by " the mixed coal volatile matter V before implementing
dafapproach 30%, coke CSR>=66%, the monthly output of 7.63 meters of coke oven coke is 16.66 ten thousand tons/2, the empty situation of burning 4～5 hours of not coalingging after coke pushing: 30 stove/moons " change into " mixed coal volatile matter 24%≤V after enforcement
daf≤ 27%, coke CSR>=66%, 7.63 meters of coke oven coke have a daily output of 17.16～17.67 ten thousand tons/2, and have stopped after coke pushing the coking chamber empty phenomenon of burning 4～5 hours of need to not coalingging ".
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
In an embodiment, each single technical indicator of planting coking coal of using is: lean coal and meager lean coal: volatile matter V
dafbe 10.0～20.0%, adhesive index>=10; Coking coal 1#: volatile matter V
dafbe 20.0～28.0%, adhesive index>=84, maximum thickness of plastic layer Y>=16mm, maximum Giseeler fluidity lgMF>=2.8, Gu-softening temperature interval>=84 ℃; Coking coal 2#: volatile matter V
dafbe 20.0～28.0%, adhesive index is 80～84, maximum thickness of plastic layer Y>=14mm, and coking coarse grain pattern structure ratio is 46～54%; Coking coal 3#: volatile matter V
dafbe 20.0～28.0%, adhesive index is 70～80; Rich coal 1#: volatile matter V
dafbe 28.0～33.0%, adhesive index > 90, maximum thickness of plastic layer Y> 25.0mm, maximum Giseeler fluidity lgMF>=4.3, Gu-100 ℃ of interval > of softening temperature; Rich coal 2#: volatile matter V
dafbe 33.0～37.0%, adhesive index > 90, maximum thickness of plastic layer Y> 25.0mm, maximum Giseeler fluidity lgMF>=4.6, Gu-the interval >100 ℃ of softening temperature; 1/3 coking coal: volatile matter V
dafbe 28.0～34.0%, adhesive index>=85, maximum thickness of plastic layer Y is 16～22mm, maximum Giseeler fluidity lgMF>=3.0, Gu-80 ℃ of interval > of softening temperature; Gas-fat coal: volatile matter V
daffor > 37.0%, adhesive index > 90, maximum thickness of plastic layer Y> 25.0mm, maximum Giseeler fluidity lgMF>=4.8, Gu-95 ℃ of interval > of softening temperature.
Embodiment 1
A coke making and coal blending method for coking chamber coke oven with width, comprises the step that each single kind coking coal is mixed, and described each single weight percent of planting coking coal is: lean coal: 10%; Meager lean coal: 8%; Rich coal 1#:15%; 1/3 coking coal: 20%; Coking coal 1#:15%; Coking coal 2#:15%; Coking coal 3#:5%; Gas-fat coal: 8%; Bottle coal (volatile matter V
dafbe that 31%, G value is 70): 4%;
And it is 1000～1200ddpm that the maximum Giseeler fluidity of mixed coal is controlled, and it is 24～27% that volatile matter is controlled.
According to the method coal blending, gained coke CSR >=66%, 17.16～17.67 ten thousand tons/2 of 7.63 meters of coke oven coke day output, after coke pushing, coking chamber empty the burning 4～5 hours that do not need not coaling, has alleviated operator except graphite workload and has protected coke oven top furnace wall.
Embodiment 2
A coke making and coal blending method for coking chamber coke oven with width, comprises the step that each single kind coking coal is mixed, and described each single weight percent of planting coking coal is: lean coal: 20%; Rich coal 1#:10%; 1/3 coking coal: 26%; Coking coal 1#:15%; Coking coal 2#:12%; Coking coal 3#:6%; Gas-fat coal: 3%; Rich coal 2#:5 %; Bottle coal (volatile matter V
dafbe 31%, adhesive index value is 70): 3%;
And it is 600～1400ddpm that the maximum Giseeler fluidity of mixed coal is controlled, and it is 24～27% that volatile matter is controlled.
According to the method coal blending, gained coke CSR >=66%, 17.16～17.67 ten thousand tons/2 of 7.63 meters of coke oven coke day output, after coke pushing, coking chamber empty the burning 4～5 hours that do not need not coaling, has alleviated operator except graphite workload and has protected coke oven top furnace wall.
Embodiment 3
A coke making and coal blending method for coking chamber coke oven with width, comprises the step that each single kind coking coal is mixed, and described each single weight percent of planting coking coal is: lean coal: 18%; Rich coal 1#:12%; 1/3 coking coal: 20%; Coking coal 1#:18%; Coking coal 2#:11%; Coking coal 3#:8%; Rich coal 2#:7%; Bottle coal (volatile matter V
dafbe 31%, adhesive index value is 75): 6%;
And it is 600～1400ddpm that the maximum Giseeler fluidity of mixed coal is controlled, and it is 24～27% that volatilization is divided into control.
According to the method coal blending, gained coke CSR >=66%, 17.16～17.67 ten thousand tons/2 of 7.63 meters of coke oven coke day output, after coke pushing, coking chamber empty the burning 4～5 hours that do not need not coaling, has alleviated operator except graphite workload and has protected coke oven top furnace wall.
Claims (3)
1. the coke making and coal blending method of a coking chamber coke oven with width, comprise the step that each single kind coking coal is mixed, it is characterized in that: described each single coking coal of planting comprises lean coal, meager lean coal, rich coal 1#, rich coal 2#, 1/3 coking coal, gas-fat coal, coking coal 1#, coking coal 2#, coking coal 3#;
Each single weight percent of planting coking coal is: lean coal and meager lean coal: 18～21%; Rich coal 1#:12～18%; 1/3 coking coal: 20～25%; Gas-fat coal and rich coal 2#:6～8%; Coking coal 1#:16～20%; Coking coal 2#:8～15%; Coking coal 3#:6～8%; Surplus is other volatile matter V arbitrarily
daf≤ 35% utilized coking coal;
And mixed coal: maximum Giseeler fluidity is 600～1400ddpm, volatilization is divided into 24～27%;
The volatile matter V of described lean coal and meager lean coal
dafbe 10.0～20.0%, adhesive index>=10;
The volatile matter V of described coking coal 1#
dafbe 20.0～28.0%, adhesive index>=84, maximum thickness of plastic layer Y>=16mm, maximum Giseeler fluidity lgMF>=2.8, Gu-softening temperature interval>=84 ℃;
The volatile matter V of described coking coal 2#
dafbe 20.0～28.0%, adhesive index is 80～84, maximum thickness of plastic layer Y>=14mm, and coking coarse grain pattern structure ratio is 46～54%;
The volatile matter V of described coking coal 3#
dafbe 20.0～28.0%, adhesive index is 70～80;
The volatile matter V of described rich coal 1#
dafbe 28.0～33.0%, adhesive index >90, maximum thickness of plastic layer Y>25.0mm, maximum Giseeler fluidity lgMF>=4.3, Gu-the interval >100 ℃ of softening temperature;
The volatile matter V of described rich coal 2#
dafbe 33.0～37.0%, adhesive index >90, maximum thickness of plastic layer Y>25.0mm, maximum Giseeler fluidity lgMF>=4.6, Gu-the interval >100 ℃ of softening temperature;
The volatile matter V of described 1/3 coking coal
dafbe 28.0～34.0%, adhesive index>=85, maximum thickness of plastic layer Y is 16～22mm, maximum Giseeler fluidity lgMF>=3.0, Gu-the interval >80 ℃ of softening temperature;
The volatile matter V of described gas-fat coal
daffor >37.0%, adhesive index >90, maximum thickness of plastic layer Y>25.0mm, maximum Giseeler fluidity lgMF>=4.8, Gu-the interval >95 ℃ of softening temperature.
2. the coke making and coal blending method of coking chamber coke oven with width according to claim 1, is characterized in that: the maximum Giseeler fluidity of described mixed coal is 1000～1200ddpm.
3. the coke making and coal blending method of coking chamber coke oven with width according to claim 1 and 2, is characterized in that: described each single weight percent of planting coking coal is: lean coal and meager lean coal: 18～21%; Rich coal 1#:12～16%; 1/3 coking coal: 20～24%; Gas-fat coal and rich coal 2#:6～7%; Coking coal 1#:17～20%; Coking coal 2#:8～11%; Coking coal 3#:6～8%; Surplus is other volatile matter V arbitrarily
daf≤ 35% utilized coking coal.
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Effective date of registration: 20170713 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 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |