CN111826184A - Coal blending method for producing high-quality coke by geological age - Google Patents
Coal blending method for producing high-quality coke by geological age Download PDFInfo
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- CN111826184A CN111826184A CN202010769256.4A CN202010769256A CN111826184A CN 111826184 A CN111826184 A CN 111826184A CN 202010769256 A CN202010769256 A CN 202010769256A CN 111826184 A CN111826184 A CN 111826184A
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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 belongs to the technical field of coking and coal blending, and particularly discloses a coal blending method for producing high-quality coke by using geological age, which comprises the following steps: selecting different coal types, determining the geological age of the coal types, preparing the coal types into blended coal, wherein the geological time of the blended coal is more than or equal to 2.54 hundred million years, and finally coking the blended coal to obtain high-quality coke; the geological time of the blended coal is obtained by carrying out weighted average on geological times of various coal types according to the blending ratio of the blended coal. The coal blending method of the invention controls the geological time of the blended coal in the process of coal blending, thereby achieving the purpose of improving and stabilizing the quality of coke.
Description
Technical Field
The invention belongs to the technical field of coking and coal blending, and particularly relates to a coal blending method for producing high-quality coke by using geological age.
Background
The Xichang steel vanadium coking coal resource is also produced by blending and coking coal resources in Yuqing Yuan of Yun Guizhong, and has a plurality of limitations on improving the coke quality and reducing the coal blending cost. From 2014, the method is continuously expanded to the northwest direction, and in the coal resource expansion process, the coke quality is greatly different under the condition that indexes of industrial analysis, caking property analysis and the like of a plurality of resources are basically consistent. In the coking production process, under the conditions that the coal type in the coal blending structure is basically unchanged and the quality of blended coal is stable, the quality of coke obviously fluctuates, which brings adverse effects on the stable and smooth production of the blast furnace. However, the coal-forming age or coal-forming environment or geological factors are relatively few in consideration of the coal-forming age or geological factors when the coal-forming age or coal-blending is researched domestically, and only the influence of different coal-forming ages and coal-forming environments on the caking property and coking property of the coking coal is researched in Liuming (the influence of Liuming. coal-forming age and coal-forming environment on the coking property of the coking coal is studied [ J ] coal quality technology, 2015, No.199(S1):22-24 ].
Disclosure of Invention
The invention comprehensively considers the influence of geological age on the coke quality under the premise of considering the quality index of blended coal during coking and blending coal, thereby achieving the purpose of stabilizing the coke quality.
In order to achieve the purpose, the invention provides the following technical scheme: the coal blending method for producing high-quality coke in geological age comprises the following steps: selecting different coal types, determining the geological age of the coal types, preparing the coal types into blended coal, wherein the geological time of the blended coal is more than or equal to 2.54 hundred million years, and finally coking the blended coal to obtain high-quality coke; the geological time of the blended coal is obtained by carrying out weighted average on geological times of various coal types according to the blending ratio of the blended coal.
According to the coal blending method for producing high-quality coke in geological age, the blended coal also needs to meet at least one of the following quality requirements:
28.5％≤Vdaf≤31％；
78≤G≤83；
X≥40mm；
Y≥14mm。
according to the coal blending method for producing high-quality coke in geological age, the geological time of the blended coal is more than or equal to 2.60 hundred million years.
According to the coal blending method for producing high-quality coke in geological age, the reacted strength CSR of the coke is more than or equal to 63.0%.
According to the coal blending method for producing high-quality coke in geological age, the reacted strength CSR of the coke is more than or equal to 65.0%.
Compared with the prior art, the invention has the beneficial effects that:
the coal blending method achieves the purpose of improving and stabilizing the coke quality by controlling the geological time of the blended coal in the coal blending process on the premise of ensuring the quality of the blended coal, and has wide popularization and application prospects.
Detailed Description
The coal blending method for producing high-quality coke in geological age comprises the following steps: selecting different coal types, determining the geological age of the coal types, preparing the coal types into blended coal, wherein the geological time of the blended coal is more than or equal to 2.54 hundred million years, and finally coking the blended coal to obtain high-quality coke; the geological time of the blended coal is obtained by carrying out weighted average on geological times of various coal types according to the coal blending proportion of the blended coal; the blended coal also needs to meet at least one of the following quality requirements:
28.5％≤Vdaf≤31％；
78≤G≤83；
X≥40mm；
Y≥14mm。
the coal in different geological ages has larger difference of molecular structures, so the coal in different geological periods (such as the stone charm period, the biennial period, the chalky period and the middle period of the new century) is mixed, and the coal is reasonably mixed by combining other quality indexes of the mixed coal, so that the performances of various coals can be fully exerted, and the aim of improving and stabilizing the coke quality is fulfilled.
Geological age of single coal for various coking of Xichang steel vanadium: the coal seam in the Yunchuan region belongs to the second-filial generation and the third-filial generation, has relatively excellent coal quality which is about 2.5 hundred million years to the present, and belongs to high-quality coal with relatively high economy. The coal in Shanxi province mainly takes the stone coal and the binary coal as main materials, has better coal quality which is about 3.0 hundred million years from the present, and belongs to the domestic best quality coal.
On the premise of ensuring the stable quality of each coal, the geological age is considered in the adjustment of the coal blending structure, so that the problems that the index of labor division is basically the same, the coking performance index of single coal is not matched with the coke quality of blended coal can be well solved, the coke quality CSR is more than or equal to 63.0 percent, and the average geological age time of the blended coal is more than or equal to 2.54 hundred million years are reasonably solved; the CSR is more than or equal to 65.0 percent, and the average geological time of the blended coal is more than or equal to 2.60 hundred million years.
Vdaf: drying the ash-free base volatile matter; g: an adhesion index; x: final shrinkage; y: the maximum thickness of the colloidal layer.
The following examples are provided to further illustrate the embodiments of the present invention and are not intended to limit the scope of the present invention.
Examples
The coal blending scheme of the concrete embodiment is shown in table 1, the geological age of each embodiment under the coal blending structure of table 1 is shown in table 2, and the blended coal quality and coke quality are shown in table 3.
TABLE 1 specific examples coal blending protocol/%)
TABLE 2 geological times (hundred million years) of the examples under the coal blending schedule of TABLE 1
TABLE 3 blending coal quality and Coke quality
As is clear from Table 3, the blended coals of examples 1 to 5 had no significant difference in quality, but the coke quality was significantly different. Wherein, the coke quality CSR is more than or equal to 63.0 percent, and the average geological time of the blended coal is more than or equal to 2.54 hundred million years; the coke quality CSR is more than or equal to 65.0 percent, and the average geological time of the blended coal is more than or equal to 2.60 hundred million years.
By adopting the method, the proper quality of the blended coal is controlled and the geological age is also considered when the coal blending is carried out, thereby being beneficial to producing high-quality coke.
Claims (5)
1. The coal blending method for producing high-quality coke in geological age is characterized by comprising the following steps: selecting different coal types, determining the geological age of the coal types, preparing the coal types into blended coal, wherein the geological time of the blended coal is more than or equal to 2.54 hundred million years, and finally coking the blended coal to obtain high-quality coke; the geological time of the blended coal is obtained by carrying out weighted average on geological times of various coal types according to the blending ratio of the blended coal.
2. The coal blending method for producing high-quality coke in geological times according to claim 1, characterized in that the blended coal further meets at least one of the following quality requirements:
28.5％≤Vdaf≤31％；
78≤G≤83；
X≥40mm；
Y≥14mm。
3. the coal blending method for producing high-quality coke in geological times according to claim 2, wherein the geological time of the blended coal is more than or equal to 2.60 hundred million years.
4. The coal blending method for producing high-quality coke in geological times according to claim 2, wherein the post-reaction strength CSR of the coke is not less than 63.0%.
5. The coal blending method for producing high-quality coke in geological times according to claim 3, wherein the reacted strength CSR of the coke is not less than 65.0%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010769256.4A CN111826184A (en) | 2020-08-03 | 2020-08-03 | Coal blending method for producing high-quality coke by geological age |
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| CN202010769256.4A CN111826184A (en) | 2020-08-03 | 2020-08-03 | Coal blending method for producing high-quality coke by geological age |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07103374B2 (en) * | 1990-01-25 | 1995-11-08 | 新日鐵化学株式会社 | Coke production method |
| CN101358135A (en) * | 2007-07-31 | 2009-02-04 | 上海梅山钢铁股份有限公司 | Coking coal blending method for producing high-heat strength coke |
| CN101942315A (en) * | 2010-08-16 | 2011-01-12 | 中国神华能源股份有限公司 | High-proportion coal blending and coking method |
| CN102690669A (en) * | 2012-05-23 | 2012-09-26 | 武汉钢铁(集团)公司 | Coking coal quality classification method and coal blending and coking method with participation of coking coal |
-
2020
- 2020-08-03 CN CN202010769256.4A patent/CN111826184A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07103374B2 (en) * | 1990-01-25 | 1995-11-08 | 新日鐵化学株式会社 | Coke production method |
| CN101358135A (en) * | 2007-07-31 | 2009-02-04 | 上海梅山钢铁股份有限公司 | Coking coal blending method for producing high-heat strength coke |
| CN101942315A (en) * | 2010-08-16 | 2011-01-12 | 中国神华能源股份有限公司 | High-proportion coal blending and coking method |
| CN102690669A (en) * | 2012-05-23 | 2012-09-26 | 武汉钢铁(集团)公司 | Coking coal quality classification method and coal blending and coking method with participation of coking coal |
Non-Patent Citations (3)
| Title |
|---|
| 徐博: "《煤化学》", 28 February 2011 * |
| 曾坚贤: "《化工实习》", 30 June 2014 * |
| 王宇魁: "《中国煤炭市场发展报告》", 31 May 2019 * |
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Application publication date: 20201027 |