CN107892935A - It is a kind of to substitute the burnt method of coking coal production metallurgy using coal directly-liquefied residue - Google Patents
It is a kind of to substitute the burnt method of coking coal production metallurgy using coal directly-liquefied residue Download PDFInfo
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- CN107892935A CN107892935A CN201711119595.2A CN201711119595A CN107892935A CN 107892935 A CN107892935 A CN 107892935A CN 201711119595 A CN201711119595 A CN 201711119595A CN 107892935 A CN107892935 A CN 107892935A
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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
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/08—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form in the form of briquettes, lumps and the like
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Abstract
A kind of method that coking coal production metallurgy Jiao is substituted using coal directly-liquefied residue is by coal directly-liquefied residue：Mixed coal weight ratio=3 ~ 10：100, coal directly-liquefied residue is added in mixed coal, cake of press is made firm by ramming, obtains briquette, air heating is completely cut off in gas retort and carries out destructive distillation, normal temperature is down to through quenching process after then red heat furnace charge is come out of the stove, that is, obtains smelter coke.The present invention has the advantages of saving high-quality caking coal, reducing coke making and coal blending cost.
Description
Technical field
The present invention relates to a kind of the burnt method of coking coal production metallurgy is substituted using coal directly-liquefied residue
Background technology
Coking is one of important channel of coal deep processing and utilization, and as the special and coking coal of scarce resource (with gas
Based on coal, rich coal, coking coal and lean coal) quality of STRENGTH ON COKE play the role of it is particularly important.Coal resources in China relative abundance, but
High-quality caking coal stock number is very limited, and still will be maintained at 900,000,000-10 hundred million t left sides to its annual requirement within the following long period
It is right.Therefore, seek alternate resources, while protect rare high-quality caking coal resource, concerning national economy and society science,
Harmonious, sustainable development.
China has the coal resources of many weak (no) caking property, rationally carries out coal blending using these weak (no) binding coals
Coking, binding coal is saved, turn into Reasonable Utilizing Its Coal Resources, effectively reduce the important channel of metallurgical coke production cost.Patent
CN1211456C discloses a kind of metallurgical coke and its production method, its coal blending raw material composition for bottle coal, rich coal, coking coal, coke powder with
And part weak caking coal, tamping coking, which is coaling, produces secondary metallurgical.Patent CN101870875B provides a kind of with 1/3 Jiao
Coal and the method for mill coal production metallurgy Jiao, it is equipped with 10%-12% jet coal and 5%-10% based on 1/3 coking coal
Anthracite obtain mixed coal, coking obtains secondary metallurgical charcoal.Patent CN101284997B is with high-sulfur, 1/3 coking coal of high ash
For main coking coal, anthracite and pitch binder are equipped with, is produced after tamping coking technique and obtains metallurgical coke.Foregoing invention is special
Subject matter existing for the profit metallurgical coke preparation method is：1st, metallurgical coke production is still mainly based on coking coal resource, supplying
The coal resources of weak (no) caking property are relatively fewer；2nd, the metallurgical coke index of production does not reach or can only partly reached one-level metallurgy
Burnt standard.
Direct coal liquefaction technology can provide abundant chemicals, but can produce simultaneously account for liquefaction raw coal total amount 20%~
30% liquefied residue.Liquefied residue is the mixture of a kind of high-carbon, high ash and high-sulfur, and is listed in《National Hazard waste name
Record》(2016 editions), how green, efficiently handle this dangerous waste thing of liquefied residue the problem of being worth thinking deeply about.Liquefied residue is
By organic components such as Residual oil and asphaltenes, it is difficult to be dissolved in inorganic mineral in the unconverted coal and coal of organic solvent etc. three
Divide and form.And because asphaltene is the solvable macromolecule organic mixture of a kind of toluene or benzene, it has higher armaticity, hold
Polymerization or crosslinking easily occurs, therefore it has very strong caking property.Such as patent CN103436280B, to disclose a kind of coal direct
The method that liquefied residue prepares coke, liquefied residue is carried out thermosol extraction, separation of solid and liquid, polymeric modification by it first, secondly will
It mixes with coking with clean fine coal, make firm by ramming after, carry out coking, finally give metallurgical coke.The liquefied residue application process of the patent
In need to be modified first, operating process is complicated, adds its application cost.Patent CN101962560A enters coal liquefaction residue
After the extraction of row one-level, solid obtained by separation of solid and liquid carries out reextraction, then separating obtained bitumen heating destructive distillation is obtained
To mesophase pitch, but resulting bitumen caking property is poor, when preparing coke as binding agent, it is difficult to improve coke
Mechanical strength.
Through retrieval, using coal directly-liquefied residue as binding agent, part coking coal or the higher ratio of supplying are substituted in mixed coal
There is not been reported for the research of the mill coal production metallurgy coke of example.
The content of the invention
Substituted it is an object of the invention to provide one kind in coal blending process using coal directly-liquefied residue part coking coal come
The burnt method of production metallurgy.
Coal directly-liquefied residue is directly used in the preparation of metallurgical coke by the present invention first.Conventional metallurgical coke coal-blending coking its
Core thinking is by the cooperation of gas, fertilizer, Jiao, thin coking coal, obtains that there is suitable ash content, volatile matter, S, G value, Y value to coordinate
Coal, the indices such as the work point of metallurgical coke requirement, cold strength, reactivity, post reaction strength are met after high-temperature retorting, but
The pyrolytic process for being coal is a complicated physical and chemical process, and the coal with caking property has the colloid bodily form in pyrolytic process
Into, caking property of coal quality depend on gel quantity, mobility and semicoke formed before heat endurance.Coking coal all possesses
Certain caking index and thickness of colloidal matter layer this characteristic, but because high-quality coking coal resource is in great short, find coking
The substitute products or expansion coking coal scope of coal just seem particularly significant.
The composition of coal directly-liquefied residue is complex, and according to different coals, its composition also has very big difference.Mainly by 3
Individual part composition：The component that can be dissolved by an organic solvent, it is heavy oil or Residual oil, asphaltene, preasphaltene；It is difficult to be dissolved in
The unconverted coal of solvent, including inertinite and the bigger component of the molecular weight that is formed in the still-process that liquefies；In coal
Inorganic mineral and the catalyst added.Heavy oil content is 34%~37% in Shenhua Coal Liquefaction Residue, and asphaltene content is
17%~22%, preasphaltene and tetrahydrofuran insoluble content are 43%~46%；Heavy oil and asphaltene in coal liquefaction residue
Content ＞ 50%.
A large amount of existing asphaltenes are the solvable organic mixing of macromolecule of a kind of toluene or benzene in coal directly-liquefied residue
Thing, it has higher armaticity, polymerization or crosslinking easily occurs, therefore it has very strong caking property.Add in coal blending
Enter coal directly-liquefied residue, the fluidity of mixed coal can be improved, improve the crystallinity and microscopic structure of coke, while increase coal appearance
Lazy ability, so can part substitute strong binding coal or increase the dosage of coking coal non-caking coal.
Coal directly-liquefied residue is directly used in the preparation of metallurgical coke by the present invention under conditions of not finishing first.
A kind of smelter coke preparation method of the present invention, comprises the following steps：
By coal directly-liquefied residue：Mixed coal weight ratio=3-10:100, coal directly-liquefied residue is added in mixed coal,
Make cake of press firm by ramming, obtain briquette, air heating is completely cut off in gas retort and carries out destructive distillation, through quenching work after then red heat furnace charge is come out of the stove
Sequence is down to normal temperature, that is, obtains smelter coke.
The quality index of the mixed coal is：Vdaf≤ 25%, Ad≤ 10.5%, Std＜ 0.70%, caking index >=6, carefully
Degree：＜ 0.3mm account for 85%.
The quality index of the coal directly-liquefied residue is：Vdaf>=38%, Ad≤ 16%, FCd>=45%.
The preparation method of the coal directly-liquefied residue：It is standby to ＜ 3mm through crusher in crushing by its chip solid.
The temperature of the destructive distillation is 950~1100 DEG C, and the time of destructive distillation is 16~24h.
The index for the metallurgical coke that above-mentioned coal blending is refined by stamp charging is as follows：
Moisture content≤1.10%, A of metallurgical coked≤ 12.00%, Vdaf≤ 0.98%, Std≤ 0.65%.Coke strenth (rotary drum
Method), M40>=72.7%, M25>=85.7%, M10≤ 8.3%, coke reactivity≤30.8%, post reaction strength >=52.0%.
The preparation method of mixed coal is as follows：
(1) mixed coal composition is：Coking coal 20-25%, rich coal 5-10%, 1/3 coking coal 25-30%, bottle coal 10-20%,
Mill coal 10-20%, coal directly-liquefied residue 3-10%.Wherein coal directly-liquefied residue:Mill coal weight ratio is 1:2-
7；
(2) the various coal dusts that mixed coal forms are broken to ＜ 3mm and account for more than 80%, mixture is uniform, reaches mixed coal moisture content
To 10-12%.
Metallurgical coke production method is coaling using the coal blending method of making firm by ramming, using conventional coke oven production metallurgy Jiao's method.
The advantages of present invention is compared with conventional metallurgical Jiao's production technology is mainly manifested in following several respects：
1. coal directly-liquefied residue is as coking high-temperature agglomerant, it can promote to make some single grade coals that certain journey occur
Going bad for degree, promotes the development of anisotropic carbon, improves the fluidity of mixed coal, improve the crystallinity and microscopic structure of coke,
Increase the appearance inertia of mixed coal.
2. the addition of coal directly-liquefied residue can partly substitute strong binding coal or increase the dosage of coking coal non-caking coal,
Coking coal resource can effectively be expanded, save high-quality caking coal, reduce coke making and coal blending cost.
3. coal directly-liquefied residue belongs to large dangerous waste product, but abundance simultaneously, cheap, heat adhesiveness can be excellent
Different, green, the efficient industrialization that the present invention realizes coal directly-liquefied residue while the metallurgical coke of function admirable is obtained should
With.
Embodiment
Embodiment of the invention is made below and further being illustrated.
Embodiment 1
(1) coal directly-liquefied residue is broken into ＜ 3mm；
(2) as-fired coal material by 25wt% coking coal, 10wt% rich coal, 25wt% 1/3 coking coal, 20wt% gas
Coal, 17wt% meager coal, 3% coal directly-liquefied residue, which coordinate, to be formed；The quality index of mixed coal is：Vdaf24%,
Ad8.85%, Std0.68%, caking index 6, fineness：＜ 0.3mm account for 89%.
(3) coal sample after being well mixed what is made makes cake of press firm by ramming, and air is completely cut off in gas retort and is heated to 1100 DEG C, is held
Continuous heating 16h, normal temperature is down to after then red heat furnace charge is come out of the stove through quenching process, then screened, obtains smelter coke.
(4) index for the metallurgical coke that above-mentioned coal blending is refined by stamp charging is as follows：
The moisture content 1.0% of metallurgical coke, Ad10.02%, Vdaf0.69%, Std0.58%.Coke strenth (rotary drum method),
M4076.8%, M2588.7%, M107.3%, coke reactivity 28.0%, post reaction strength 65.0%.
Embodiment 2
(1) coal directly-liquefied residue is broken into ＜ 3mm；
(2) as-fired coal material by 22wt% coking coal, 10wt% rich coal, 30wt% 1/3 coking coal, 15wt% gas
Coal, 20wt% weakly caking coal, 3% coal directly-liquefied residue, which coordinate, to be formed；The quality index of mixed coal is：Vdaf24.5%,
Ad8.95%, Std0.73%, caking index 6, fineness：＜ 0.3mm account for 83%.
(3) coal sample after being well mixed what is made makes cake of press firm by ramming, and air is completely cut off in gas retort and is heated to 1100 DEG C, is held
Continuous heating 16h, normal temperature is down to after then red heat furnace charge is come out of the stove through quenching process, then screened, obtains smelter coke.
(4) index for the metallurgical coke that above-mentioned coal blending is refined by stamp charging is as follows：
The moisture content 0.94% of metallurgical coke, Ad11.02%, Vdaf0.85%, Std0.60%.Coke strenth (rotary drum method),
M4077.8%, M2589.7%, M107.9%, coke reactivity 26.0%, post reaction strength 67.0%.
Embodiment 3
(1) coal directly-liquefied residue is broken into ＜ 3mm；
(2) as-fired coal material by 25wt% coking coal, 5wt% rich coal, 27wt% 1/3 coking coal, 18wt% bottle coal,
20wt% dross coal, 5% coal directly-liquefied residue, which coordinate, to be formed；The quality index of mixed coal is：Vdaf24%,
Ad8.25%, Std0.68%, caking index 6, fineness：＜ 0.3mm account for 88%.
(3) coal sample after being well mixed what is made makes cake of press firm by ramming, and air is completely cut off in gas retort and is heated to 1050 DEG C, is held
Continuous heating 18h, normal temperature is down to after then red heat furnace charge is come out of the stove through quenching process, then screened, obtains smelter coke.
(4) index for the metallurgical coke that above-mentioned coal blending is refined by stamp charging is as follows：
The moisture content 0.87% of metallurgical coke, Ad10.02%, Vdaf0.69%, Std0.52%.Coke strenth (rotary drum method),
M4078.8%, M2589.4%, M107.2%, coke reactivity 24.0%, post reaction strength 69.0%.
Embodiment 4
(1) coal directly-liquefied residue is broken into ＜ 3mm；
(2) as-fired coal material by 21wt% coking coal, 6wt% rich coal, 28wt% 1/3 coking coal, 19wt% bottle coal,
18wt% jet coal, 8% coal directly-liquefied residue, which coordinate, to be formed；The quality index of mixed coal is：Vdaf24.8%,
Ad8.5%, Std0.65%, caking index 6, fineness：＜ 0.3mm account for 88%.
(3) coal sample after being well mixed what is made makes cake of press firm by ramming, and air is completely cut off in gas retort and is heated to 1100 DEG C, is held
Continuous heating 20h, normal temperature is down to after then red heat furnace charge is come out of the stove through quenching process, then screened, obtains smelter coke；
(4) index for the metallurgical coke that above-mentioned coal blending is refined by stamp charging is as follows：
The moisture content 0.83% of metallurgical coke, Ad10.52%, Vdaf0.54%, Std0.58%.Coke strenth (rotary drum method),
M4077.8%, M2586.4%, M107.1%, coke reactivity 25.0%, post reaction strength 68.0%.
Embodiment 5
(1) coal directly-liquefied residue is broken into ＜ 3mm；
(2) as-fired coal material by 20wt% coking coal, 10wt% rich coal, 30wt% 1/3 coking coal, 10wt% gas
Coal, 20wt% meager coal, 10% coal directly-liquefied residue, which coordinate, to be formed；The quality index of mixed coal is：Vdaf24.7%,
Ad6.2%, Std0.60%, caking index 6, fineness：＜ 0.3mm account for 89%.
(3) coal sample after being well mixed what is made makes cake of press firm by ramming, and air is completely cut off in gas retort and is heated to 1050 DEG C, is held
Continuous heating 24h, normal temperature is down to after then red heat furnace charge is come out of the stove through quenching process, then screened, obtains smelter coke；
(4) index for the metallurgical coke that above-mentioned coal blending is refined by stamp charging is as follows：
The moisture content 0.84% of metallurgical coke, Ad9.52%, Vdaf0.86%, Std0.58%.Coke strenth (rotary drum method),
M4077.8%, M2585.9%, M107.1%, coke reactivity 27.0%, post reaction strength 63.0%.
Claims (7)
1. a kind of substitute the burnt method of coking coal production metallurgy using coal directly-liquefied residue, it is characterised in that including following step
Suddenly：
By coal directly-liquefied residue：Mixed coal weight ratio=3-10：100, coal directly-liquefied residue is added in mixed coal, made firm by ramming
Cake of press, briquette is obtained, air heating is completely cut off in gas retort and carries out destructive distillation, is dropped after then red heat furnace charge is come out of the stove through quenching process
To normal temperature, that is, obtain smelter coke.
2. a kind of method that coking coal production metallurgy Jiao is substituted using coal directly-liquefied residue as claimed in claim 1, it is special
Sign is that the quality index of the mixed coal is：Vdaf≤ 25%, Ad≤ 10.5%, Std＜ 0.70%, caking index >=6, fineness：＜
0.3mm accounts for 85%.
3. a kind of method that coking coal production metallurgy Jiao is substituted using coal directly-liquefied residue as claimed in claim 1, it is special
Sign is that the preparation method of the mixed coal is as follows：
(1) mixed coal composition is：Coking coal 20-25%, rich coal 5-10%, 1/3 coking coal 25-30%, bottle coal 10-20%, mill coal
10-20%, coal directly-liquefied residue 3-10%；
Wherein coal directly-liquefied residue:Mill coal weight ratio is 1:2-7；
(2) the various coal dusts that mixed coal forms are broken to ＜ 3mm and account for more than 80%, mixture is uniform, mixed coal moisture content is reached 10-
12%.
4. a kind of method that coking coal production metallurgy Jiao is substituted using coal directly-liquefied residue as claimed in claim 1, it is special
Sign is that the quality index of the coal directly-liquefied residue is： Vdaf>=38%, Ad≤ 16%, FCd≥45%。
5. a kind of method that coking coal production metallurgy Jiao is substituted using coal directly-liquefied residue as claimed in claim 1, it is special
Sign is the preparation method of the coal directly-liquefied residue：It is standby to ＜ 3mm through crusher in crushing by its chip solid.
6. a kind of method that coking coal production metallurgy Jiao is substituted using coal directly-liquefied residue as claimed in claim 1, it is special
Sign is that the temperature of the destructive distillation is 950~1100 DEG C, and the time of destructive distillation is 16~24h.
7. such as the metallurgical coke of any one of claim 1-6 methods described production, it is characterised in that the index of metallurgical coke is as follows：
Moisture content≤1.10%, A of metallurgical coked≤ 12.00%, Vdaf≤ 0.98%, Std≤ 0.65%, coke strenth, M40≥
72.7%, M25>=85.7%, M10≤ 8.3%, coke reactivity≤30.8%, post reaction strength >=52.0%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119595.2A CN107892935A (en) | 2017-11-14 | 2017-11-14 | It is a kind of to substitute the burnt method of coking coal production metallurgy using coal directly-liquefied residue |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119595.2A CN107892935A (en) | 2017-11-14 | 2017-11-14 | It is a kind of to substitute the burnt method of coking coal production metallurgy using coal directly-liquefied residue |
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| Publication Number | Publication Date |
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| CN107892935A true CN107892935A (en) | 2018-04-10 |
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ID=61805125
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| CN201711119595.2A Withdrawn CN107892935A (en) | 2017-11-14 | 2017-11-14 | It is a kind of to substitute the burnt method of coking coal production metallurgy using coal directly-liquefied residue |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293362A (en) * | 2018-10-11 | 2019-02-01 | 中喜（宁夏）新材料有限公司 | Graphene electrodes material producing process |
| CN110746997A (en) * | 2019-10-29 | 2020-02-04 | 武汉钢铁有限公司 | Method for refining metallurgical coke |
| CN111635775A (en) * | 2020-06-09 | 2020-09-08 | 邢台旭阳化工有限公司 | Method for coking by using phthalic anhydride rectification residues |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04309594A (en) * | 1991-04-08 | 1992-11-02 | Nippon Steel Corp | Production of blast furnace coke |
| CN104087328A (en) * | 2014-07-31 | 2014-10-08 | 孙孟君 | Coke oven coking method for improving ratio of long flame coal for chemical coke |
| CN106635217A (en) * | 2016-12-02 | 2017-05-10 | 北京神雾环境能源科技集团股份有限公司 | Formed coke and preparation method thereof |
-
2017
- 2017-11-14 CN CN201711119595.2A patent/CN107892935A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04309594A (en) * | 1991-04-08 | 1992-11-02 | Nippon Steel Corp | Production of blast furnace coke |
| CN104087328A (en) * | 2014-07-31 | 2014-10-08 | 孙孟君 | Coke oven coking method for improving ratio of long flame coal for chemical coke |
| CN106635217A (en) * | 2016-12-02 | 2017-05-10 | 北京神雾环境能源科技集团股份有限公司 | Formed coke and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293362A (en) * | 2018-10-11 | 2019-02-01 | 中喜（宁夏）新材料有限公司 | Graphene electrodes material producing process |
| CN110746997A (en) * | 2019-10-29 | 2020-02-04 | 武汉钢铁有限公司 | Method for refining metallurgical coke |
| CN111635775A (en) * | 2020-06-09 | 2020-09-08 | 邢台旭阳化工有限公司 | Method for coking by using phthalic anhydride rectification residues |
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Application publication date: 20180410 |