CN109022007B - Tamping coking process for blending anthracite and gas coal in large proportion - Google Patents
Tamping coking process for blending anthracite and gas coal in large proportion Download PDFInfo
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- CN109022007B CN109022007B CN201811207814.7A CN201811207814A CN109022007B CN 109022007 B CN109022007 B CN 109022007B CN 201811207814 A CN201811207814 A CN 201811207814A CN 109022007 B CN109022007 B CN 109022007B
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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
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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Abstract
The invention discloses a tamping coking process for mixing anthracite and gas coal in a large proportion. The process comprises the following steps: firstly, the mixed coal is put into a tamping machineTamping, the obtained density is 1.05-1.10t/m after tamping is finished3And then, the coal cake is put into a coke oven carbonization chamber for coking, the highest temperature during coking is 1300 ℃, the coking time is 62 hours, mature coke is obtained after coking, then, a coal-charging coke pusher is used for pushing the mature coke into a coke quenching car, then, the coke quenching car is used for sending the mature coke into a coke quenching tower for quenching, coke is obtained after quenching is finished, and finally, the coke is unloaded from a coke quenching platform and is sent to a screening system for grading by a belt. The invention uses cheap anthracite (non-coking coal) and gas coal (weakly caking coal) to blend coal to refine metallurgical coke in a large proportion, the process is very simple, the process can effectively expand coking resources, save coking coal with resource shortage, can also reduce coking cost, and has great economic and social benefits.
Description
Technical Field
The invention relates to the technical field of anthracite and gas coal blending coking production, in particular to a tamping coking process for blending anthracite and gas coal in a large proportion.
Background
The coking coal in China only accounts for about 37 percent of the coal reserves, and although the varieties are relatively complete, the structure and the regional distribution are unbalanced. The weak caking gas coal has a large reserve up to 55.9 percent and is easy to select coal; the reserves of the fat coal and the coking coal with better caking property and coking property are respectively only 14.6 percent and 17.1 percent, most of the coals are difficult to select, and the coals are mainly concentrated in North China. The resource condition of coking coal determines the situation of long-term shortage of high-quality coking coal in China and also seriously restricts the sustainable development of the coking industry.
The anthracite resources in China are very rich and are distributed more evenly, most regions store the anthracite, the anthracite is low in price, the coal quality is good, the ash and sulfur content is low, the anthracite is also arranged around most coking enterprises in China, and the transportation distance is generally short. However, the anthracite coal has almost no caking property, so the anthracite coal is basically not used in the previous coal blending and coking process.
The gas coal is one of the coal types which have been proved to occupy a large proportion in the coking coal reserves in China, has low metamorphism degree and high volatile component, and generally has weaker caking property than gas fat coal, 1/3 coking coal, coking coal and the like, so the proportion occupied in coal blending is small at present.
Therefore, the large proportion of anthracite and weakly caking gas coal can be blended into coking coal, which is an effective way for relieving the shortage of coking coal resources, expanding coking resources, reducing production cost and improving economic benefits of enterprises, and has great significance.
Disclosure of Invention
The invention aims to provide a tamping coking process for mixing anthracite and gas coal in a large proportion. The invention uses cheap anthracite (non-coking coal) and gas coal (weakly caking coal) to blend coal to refine metallurgical coke in a large proportion, the process is very simple, the process can effectively expand coking resources, save coking coal with resource shortage, can also reduce coking cost, and has great economic and social benefits.
The technical scheme of the invention is as follows: a tamping coking process for blending anthracite and gas coal in a large proportion is characterized in that: the process comprises the following steps:
firstly, the blended coal is put into a tamping machine to be tamped, and the density of the blended coal is 1.05-1.10t/m after tamping is finished3And then, the coal cake is put into a coke oven carbonization chamber for coking, the highest temperature during coking is 1300 ℃, the coking time is 62 hours, mature coke is obtained after coking, then, a coal-charging coke pusher is used for pushing the mature coke into a coke quenching car, then, the coke quenching car is used for sending the mature coke into a coke quenching tower for quenching, coke is obtained after quenching is finished, and finally, the coke is unloaded from a coke quenching platform and is sent to a screening system for grading by a belt.
In the tamping coking process of mixing anthracite and gas coal in a large proportion, the components of the mixed coal are as follows in parts by weight: 18-25% of coking coal, 30-33% of fat coal, 20-22% of gas coal and 25-30% of anthracite.
The said anthracite is mixed into the tamping coking process of anthracite and gas coal in large proportion, and the grain size of the said anthracite is not over 1 mm.
In the tamping coking process of the anthracite and the gas coal which are mixed in large proportion, at least 50 percent of the anthracite has the granularity of less than 0.5mm in percentage by weight.
In the tamping coking process of mixing anthracite and gas coal in a large proportion, the particle size of 93 percent of the mixed coal is less than 3mm in percentage by weight.
In the tamping coking process of mixing anthracite and gas coal in a large proportion, the mixed coal is uniformly mixed before being put into a tamping machine.
In the tamping coking process of anthracite and gas coal which is mixed in a large proportion, the humidity of the coal cake is 10 percent.
The invention has the beneficial effects that:
the process can add a large proportion of anthracite and gas coal into the blended coal to refine the metallurgical coke, is very simple, and can carry out coking only by tamping the blended coal; the invention effectively utilizes the non-coking coal (anthracite) and the weakly caking coal (gas coal), effectively expands the coking resources, can save the coking coal with resource shortage, and has great social benefit; the invention uses cheap anthracite and gas coal for coking in a large proportion, can greatly reduce the coking cost, and the prepared coke can reach the standard of secondary metallurgical coke, thereby having great economic benefit.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Example 1. A tamping coking process for mixing anthracite and gas coal in large proportion.
The process comprises the following steps:
according to a normal tamping coking process, uniformly mixed blended coal is placed into a tamping machine for tamping, wherein the blended coal comprises the following components in parts by weight: 20 percent of coking coal, 30 percent of fat coal, 20 percent of gas coal and 30 percent of anthracite, wherein the anthracite is independently crushed to the granularity of less than or equal to 1.00mm, the granularity of the anthracite is less than 0.5mm and is more than 50 percent, the granularity of the matched coal is less than 3mm and is controlled to be 93 percent, and the density of 1.10t/m is obtained after tamping is finished3And then, the coal cake is put into a coke oven carbonization chamber for coking, the highest temperature during coking is 1300 ℃, the coking time is 62 hours, mature coke is obtained after coking, then, a coal-charging coke pusher is used for pushing the mature coke into a coke quenching car, then, the coke quenching car is used for sending the mature coke into a coke quenching tower for quenching, coke is obtained after quenching is finished, and finally, the coke is unloaded from a coke quenching platform and is sent to a screening system for grading by a belt.
The quality of the coke prepared by the process is detected, and the data in the following table are obtained:
| ash content (Aad) | Sulfur (Stad) | M40 | M10 | CRI | CSR |
| 12.06 | 0.63 | 78.22 | 7.65 | 33.6 | 52.3 |
As can be seen from the data in the table, the coke produced by the process reaches the standard of secondary metallurgical coke.
Example 2. A tamping coking process for mixing anthracite and gas coal in large proportion.
The process comprises the following steps:
according to a normal tamping coking process, uniformly mixed blended coal is placed into a tamping machine for tamping, wherein the blended coal comprises the following components in parts by weight: 20 percent of coking coal, 33 percent of fat coal, 20 percent of gas coal and 27 percent of anthracite, wherein the anthracite is independently crushed to the granularity of less than or equal to 1.00mm, the granularity of the anthracite is less than 0.5mm and is more than 50 percent, the granularity of the matched coal is less than 3mm and is controlled to be 93 percent, and the density of 1.10t/m is obtained after tamping is finished3Charging the coal cake into a coke oven carbonization chamber for coking, wherein the maximum temperature during coking is 1300 ℃, the coking time is 62 hours, mature coke is obtained after the coking is finished, and then, a coal charging pusher is used for pushingAnd pushing the mature coke into a coke quenching car by a coke car, then sending the mature coke into a coke quenching tower by the coke quenching car for quenching, obtaining coke after quenching, and finally unloading the coke on a coke cooling platform and sending the coke to a screening system for grading.
The quality of the coke prepared by the process is detected, and the data in the following table are obtained:
| ash content (Aad) | Sulfur (Stad) | M40 | M10 | CRI | CSR |
| 11.83 | 0.57 | 81.21 | 6.92 | 29.2 | 56.3 |
As can be seen from the data in the table, the coke produced by the process reaches the first metallurgical coke standard.
Example 3. A tamping coking process for mixing anthracite and gas coal in large proportion.
The process comprises the following steps:
according to the normal tamping coking process, the uniformly mixed blended coal is put intoTamping in a tamping machine, wherein the components of the blended coal in parts by weight are as follows: 18 percent of coking coal, 33 percent of fat coal, 22 percent of gas coal and 27 percent of anthracite, wherein the anthracite is independently crushed to the granularity of less than or equal to 1.00mm, the granularity of the anthracite is less than 0.5mm and is more than 50 percent, the granularity of the matched coal is less than 3mm and is controlled to be 93 percent, and the density is 1.05t/m after tamping is finished3And then, the coal cake is put into a coke oven carbonization chamber for coking, the highest temperature during coking is 1300 ℃, the coking time is 62 hours, mature coke is obtained after coking, then, a coal-charging coke pusher is used for pushing the mature coke into a coke quenching car, then, the coke quenching car is used for sending the mature coke into a coke quenching tower for quenching, coke is obtained after quenching is finished, and finally, the coke is unloaded from a coke quenching platform and is sent to a screening system for grading by a belt.
The quality of the coke prepared by the process is detected, and the data in the following table are obtained:
| ash content (Aad) | Sulfur (Stad) | M40 | M10 | CRI | CSR |
| 12.67 | 0.67 | 78.45 | 7.82 | 32.9 | 51.7 |
As can be seen from the data in the table, the coke produced by the process reaches the standard of secondary metallurgical coke.
Claims (3)
1. A tamping coking process for mixing anthracite and gas coal in a large proportion is characterized by comprising the following steps:
firstly, the blended coal is put into a tamping machine to be tamped, and the density of the blended coal is 1.05-1.10t/m after tamping is finished3The coal cake is put into a coke oven carbonization chamber for coking, the highest temperature during coking is 1300 ℃, the coking time is 62 hours, mature coke is obtained after coking, then the mature coke is pushed into a coke quenching car by a coal-charging coke pusher, then the mature coke is sent into a coke quenching tower by the coke quenching car for coke quenching, coke is obtained after coke quenching, and finally the coke is unloaded on a coke quenching platform and is sent to a screening system for grading by a belt, wherein the coal comprises 20 percent of coking coal, 33 percent of fat coal, 20 percent of gas coal and 27 percent of anthracite; the particle size of the anthracite coal is not more than 1 mm; according to the weight percentage, at least 50 percent of the anthracite has the granularity smaller than 0.5 mm; according to weight percentage, 93 percent of the blended coal has the granularity smaller than 3 mm.
2. The stamp-charging coking process with proportionally mixing anthracite and gas coal as recited in claim 1, wherein said coal is mixed uniformly before being put into a stamp-charging machine.
3. The stamp-charging coking process with the large proportion of anthracite and gas coal as set forth in claim 1, wherein the humidity of said coal cake is 10%.
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| CN115305102B (en) * | 2022-07-27 | 2023-10-13 | 莱芜钢铁集团银山型钢有限公司 | Method for predicting tamping degree of tamping coke |
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| CN101531908A (en) * | 2009-04-17 | 2009-09-16 | 李树斗 | Novel process for coal-blending and coking of kilkenny coal in vast scale |
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| CN101880541B (en) * | 2010-06-25 | 2013-11-06 | 神华集团有限责任公司 | Method for producing primary metallurgical coke by using 1/3 charred coal in west Mongolia region as main blending coal |
| CN105462600A (en) * | 2014-09-30 | 2016-04-06 | 上海梅山钢铁股份有限公司 | Coke prepared from anthracite, and coking method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101531908A (en) * | 2009-04-17 | 2009-09-16 | 李树斗 | Novel process for coal-blending and coking of kilkenny coal in vast scale |
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| 无烟煤配煤炼焦的试验研究;解元承等;《贵州化工》;20090430;第34卷(第2期);第13-16页 * |
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