CN101775301A - Biomass coke and preparation method thereof - Google Patents
Biomass coke and preparation method thereof Download PDFInfo
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- CN101775301A CN101775301A CN201010111261A CN201010111261A CN101775301A CN 101775301 A CN101775301 A CN 101775301A CN 201010111261 A CN201010111261 A CN 201010111261A CN 201010111261 A CN201010111261 A CN 201010111261A CN 101775301 A CN101775301 A CN 101775301A
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- coke
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- sulphur content
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- 239000000571 coke Substances 0.000 title claims abstract description 71
- 239000002028 Biomass Substances 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000003245 coal Substances 0.000 claims abstract description 40
- 238000004939 coking Methods 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000003610 charcoal Substances 0.000 claims description 38
- 238000010791 quenching Methods 0.000 claims description 9
- 230000000171 quenching effect Effects 0.000 claims description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 41
- 239000005864 Sulphur Substances 0.000 abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052799 carbon Inorganic materials 0.000 abstract description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 5
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 238000003763 carbonization Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a biomass coke and a preparation method thereof. The biomass coke comprises the following components in percentage by weight: 20%-65% of biomass carbon and 35%-80% of coal. The preparation method comprises the following steps: 1 the biomass carbon and the coking coal are respectively sent to respective grinder to be ground into fine powder; 2 the biomass carbon and the fine coal powder carbonized in step 1 are mixed according to a certain proportion, put into a carbonization furnace and compacted; 3 the temperature in the carbonization furnace is raised to about 900 to 1050 DEG C and kept for 14 to 18 hours; and 4 the refined mature coke is screened and stored after being quenched. 20% to 65% of biomass carbon is added into the biomass coke, the sulphur content and the carbon dioxide emission are greatly reduced in proportion, and the heating value also meets the requirements; and the anti-crush strength and the abrasive resistance of the coke and the drum strength which can reach M40 and is more than 72 conform to the national standards of metallurgical three-level coke.
Description
Technical field:
The invention belongs to metallurgical technology field, specifically relate to a kind of biomass coke of finger and preparation method thereof.
Technical background:
China is the big country that produces, uses coke, and China produced about 3.27 hundred million tons of coke in 2008, accounted for 60% of worldwide production, about 300,000,000 tons of year consumption.Existing coke generally is that coal is main production, and coal contains certain sulphur, and the quality influence of sulphur STRENGTH ON COKE is very big, and sulphur is one of detrimental impurity of pig iron smelting, and it reduces iron quality, and sulphur content is waste product greater than 0.07% in conversion pig.The sulphur of being brought in the stove by blast furnace burden has 82.5% from coke, so coke is the main source of sulphur in the furnace charge, the height of coke sulphur content directly has influence on blast furnace ironmaking production.When sulfur content in coke greater than 1.6%, the every increase by 0.1% of sulfur, the coke usage quantity increases by 1.8%, the Wingdale add-on increases by 3.7%, the ore add-on increases by 0.3% furnace processor and reduces by 1.5～2.0%.The sulphur content regulation of metallurgical coke is not more than 1%, and the metallurgical coke sulphur content that big-and-middle-sized blast furnace uses is less than 0.4～0.7%, and the high sulfur content coke uses and is restricted, and low sulphur coal is very limited in Chinese quantity; And the CO2 emissions of coal is also many.
Biomass charcoal (claiming charcoal again) is to put into the solid carbon that the pyrolysis oven thermal degradation stays by biomass bark, branch, shell, wood sawdust etc., and the charcoal ash content is 1～4%.Sulfur-bearing is low, and is about 0.1～0.2%, and the content of volatile matter is generally 12～20%, the thermal value height is more than 7000 kilocalories/kilogram, when pyrolysis temperature reaches 700～1000 ℃, carbon content reaches 92%, and about 8000 kilocalories/kilogram, the emission of carbon-dioxide of biomass charcoal is zero.In ancient times, ironmaking is to use charcoal, but the shatter strength of charcoal and abrasive wear resistance are lower than coke, causes being used for smelting iron and steel-making, and the charcoal consumption amount is big, cost is high.
Summary of the invention:
The object of the present invention is to provide the biomass coke that a kind of sulphur content is low, Carbon emission is few, another object of the present invention is to provide a kind of preparation method of biomass coke.
The object of the present invention is achieved like this, and the component and the weight percent of this biomass coke are as follows:
Biomass charcoal 20%～65%;
Coal 35%～80%;
The best proportioning of its component of this biomass coke and weight percent is as follows:
Biomass charcoal 25%～45%;
Coal 55%～75%.
The preparation method of above-mentioned biomass coke, the pulverizer that comprise the steps: 1, biomass charcoal, coking coal is sent to respectively separately is ground into fine powder; 2, biomass charcoal, the coal fine powder with step 1 charing is mixed in proportion, and puts into charring furnace, and compacting; 3, temperature in the charring furnace is elevated to 900 ℃～1050 ℃, kept 14～18 hours; 4, will refine sophisticated coke quenching after, sieve then, preserve.
After the quenching, the biomass coke of compacting falls, and becomes fragment.
When the sulphur content of coke surpassed 1%, this coke claimed high sulphur coke, has surpassed national standard, and the product commodity value is low.In the coking coal of certain sulphur content 1.1%, add 20% biomass charcoal refine coke, detected value such as table 1:
Table 1
Can find out from table 1, be 1.1% coking coal with sulphur content, and 80% coking coal is mixed with 20% biomass charcoal, high temperature sintering becomes biomass coke in the coke oven of 1000 degree, after testing, the coke sulphur content can drop to 0.93% by original 1.1%, meets metallurgical three grades of Jiao's national standard.
The coking coal that some sulphur content is high, coke shatter strength of producing and abrasive wear resistance are all very high, but the coke sulphur content height of producing, can not be used for blast furnace with burnt, as being to mix biomass charcoal in 1.6% the coking coal in sulphur content, just can reduce the sulphur content of coke greatly, the coke of producing reaches metallurgical three grades of Jiao's national standard.
Table 2
Can find out from table 2, be 1.6% coking coal with sulphur content, with the biomass charcoal of 55% coking coal and 45%, mixes, and high temperature sintering becomes biomass coke in the coke ovens of 1000 degree, and after testing, the coke sulphur content can drop to 0.98% by original 1.6%.
The metallurgical coke sulphur content that big-and-middle-sized blast furnace uses is less than 0.4～0.7%, this has limited many coke and has surpassed 0.7% because of sulfur-bearing, can not be used for big-and-middle-sized blast furnace, as mix biomass charcoal, just can obtain the low high grade coke of sulphur content, with sulphur content is that 0.95% coke is an example, in coal, mix 35% biomass charcoal after, detected value such as table 3:
Table 3
Can find out that from table 3 65% coking coal (sulphur content is 0.95%) mixes with 35% biomass charcoal, high temperature sintering becomes biomass coke in the coke ovens of 1000 degree, and after testing, the coke sulphur content can drop to 0.69% by original 0.95%.
Biomass charcoal is a kind of reproducible energy, the sulphur content of biomass charcoal is low, emission of carbon-dioxide is zero, added 20%～65% biomass charcoal in the biomass coke, biomass coke sulphur content, emission amount of carbon dioxide also greatly reduce in proportion, and calorific value is also closed the symbol requirement; In the production process, the accuracy that biomass charcoal, coking coal mixed, improved proportioning, guarantee the chemical ingredients of coke and stablizing of physical and mechanical properties, stablize coke quality, foreign material are wanted Ex-all in the coal, and moisture can not be too high.Though added biomass charcoal, but different biomass charcoals, coking coal are determined optimum grinding particle size according to the product particular case, biomass charcoal, coal fine powder are mixed in proportion, put into charring furnace, and compacting, temperature in the charring furnace is elevated to 900 ℃～1050 ℃, kept 14～18 hours, be mixed and made into product, can improve the shatter strength and the abrasive wear resistance of biomass coke effectively, barrate strength can reach M40 greater than 72, meets metallurgical three grades of Jiao's national standard, and the biomass charcoal consumption is little, cost is also low.
Embodiment:
Embodiment 1,
Batching: (weight percent) is 1.1% coking coal with sulphur content, and coking coal accounts for 80%, biomass charcoal accounts for 20%.1, the pulverizer that biomass charcoal, coking coal are sent to respectively separately is ground into fine powder; 2, biomass charcoal, the coal fine powder with step 1 charing is mixed in proportion, and puts into charring furnace, and compacting; 3, will be elevated to 1000 ℃ in the charring furnace, kept 14～18 hours; 4, will refine sophisticated coke with pushing machine and push quenching car through coke guide; After the quenching, coke is discharged into cool Jiao Tai; Sieve then, preserve.
Biomass char carbon products fixed carbon content 〉=85% of producing, ash content≤11.5%, sulphur content 0.93%, calorific value are at 31.48MJ/KG, and Carbon emission reduces 20% than traditional coke.
Embodiment 2,
Batching: (weight percent) is 0.8% coking coal with sulphur content, and coking coal accounts for 60%, biomass charcoal accounts for 40%.1, the pulverizer that biomass charcoal, coking coal are sent to respectively separately is ground into fine powder; 2, biomass charcoal, the coal fine powder with step 1 charing is mixed in proportion, and puts into charring furnace, and compacting; 3, will be elevated to about 950 ℃ in the charring furnace, kept 14～18 hours; 4, will refine sophisticated coke with pushing machine and push quenching car through coke guide; After the quenching, coke is discharged into cool Jiao Tai; Sieve then, preserve.
Biomass char carbon products fixed carbon content 〉=87% of producing, ash content≤10.8%, sulphur content 0.55%, calorific value are at 32.34MJ/KG, and Carbon emission reduces 40% than traditional coke.
Embodiment 3,
Batching: (weight percent) is 1.6% coking coal with sulphur content, and coking coal accounts for 55%, biomass charcoal accounts for 45%.1, the pulverizer that biomass charcoal, coking coal are sent to respectively separately is ground into fine powder; 2, biomass charcoal, the coal fine powder with step 1 charing is mixed in proportion, and puts into charring furnace, and compacting; 3, will be elevated to 920 ℃ in the charring furnace, kept 14～18 hours; 4, will refine sophisticated coke with pushing machine and push quenching car through coke guide; After the quenching, coke is discharged into cool Jiao Tai; Sieve then, preserve.
Biomass char carbon products fixed carbon content 〉=88% of producing, ash content≤10.5%, sulphur content 0.69% calorific value is at 32.18MJ/KG, and Carbon emission reduces 45% than traditional coke.
Claims (3)
1. a biomass coke is characterized in that, its component and weight percent are as follows:
Biomass charcoal 20%～65%;
Coal 35%～80%.
2. biomass coke as claimed in claim 1 is characterized in that, its component and weight percent proportioning are as follows:
Biomass charcoal 25%～45%;
Coal 55%～75%.
3. preparation method of biomass coke according to claim 1 is characterized in that: the pulverizer that comprise the steps: 1, biomass charcoal, coking coal is sent to respectively separately is ground into fine powder; 2, biomass charcoal, the coal fine powder with step 1 charing is mixed in proportion, and puts into charring furnace, and compacting; 3, temperature in the charring furnace is elevated to about 900～1050 ℃, kept 14～18 hours; 4, will refine sophisticated coke quenching after, sieve then, preserve.
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| CN201010111261A CN101775301A (en) | 2010-02-22 | 2010-02-22 | Biomass coke and preparation method thereof |
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| CN201010111261A CN101775301A (en) | 2010-02-22 | 2010-02-22 | Biomass coke and preparation method thereof |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586529A (en) * | 2012-03-23 | 2012-07-18 | 北京科技大学 | Rotary hearth furnace iron-making method utilizing biomass carbon-containing pellet to serve as raw material |
| WO2012100310A1 (en) * | 2011-01-27 | 2012-08-02 | Medrado Agenor | Increase in hardness and impact and abrasion strength of coke by mixing biomass (sucrose; soy molasses; sugar cane molasses and other types of molasses) with quenching water for coke produced in vertical and horizontal furnaces |
| CN103450915A (en) * | 2013-09-07 | 2013-12-18 | 鞍钢股份有限公司 | Method for manufacturing biomass semicoke for metallurgy |
| CN105316013A (en) * | 2014-07-31 | 2016-02-10 | 宝山钢铁股份有限公司 | Method for producing coke by replacing part of coal by sawdust |
| CN106929052A (en) * | 2015-12-30 | 2017-07-07 | 北京三聚环保新材料股份有限公司 | A kind of moulded coal raw material containing low-order coal and biological particles |
| CN106929049A (en) * | 2015-12-30 | 2017-07-07 | 北京三聚环保新材料股份有限公司 | It is a kind of that coking is carried out to the moulded coal containing low-order coal and biological particles and the technique of coal tar pitch is reclaimed |
| CN106929069A (en) * | 2015-12-30 | 2017-07-07 | 北京三聚环保新材料股份有限公司 | A kind of process for upgrading of the moulded coal raw material containing low-order coal and biological particles |
| CN106929050A (en) * | 2015-12-30 | 2017-07-07 | 北京三聚环保新材料股份有限公司 | A kind of process for upgrading of the molding mass containing low-order coal, biomass and rubbish |
| CN106929071A (en) * | 2015-12-30 | 2017-07-07 | 北京三聚环保新材料股份有限公司 | A kind of coking process of the moulded coal raw material for being coated with low-order coal and biological particles |
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Application publication date: 20100714 |