CN110330993B - Dual-functional binder-based blended coal coking method - Google Patents
Dual-functional binder-based blended coal coking method Download PDFInfo
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Abstract
A coking method of matched coal based on a bifunctional binder belongs to the field of matched coal coking, aims to solve the problems of the existing matched coal coking method, saves and protects scarce coking coal resources, fully utilizes non-caking or weak-caking coal resources such as anthracite coal and the like, adopts the bifunctional binder, mixes and humidifies the bifunctional binder and coal materials for molding at normal temperature, then sends the mixture into a pressurizing device for molding, and feeds the molded coal into a coke oven for coking after being matched with coking matched coal according to the proportion of 20-45%. The raw materials of the bifunctional binder adopted by the invention have wide sources, and can meet the requirement of large-scale production of molded coal; the coal material has excellent bonding performance in cold and hot states, and realizes direct cold bonding of the coal material and the bonding agent and bonding in the coking heating process; the method can greatly improve the proportion of non-caking coals such as anthracite and the like in the coal material for forming on the premise of ensuring the quality of the coke, reduce the production cost of the coke, or adopt the conventional coking coal to manufacture the molded coal, obviously improve the quality of the coke and improve the economic benefit.
Description
Technical Field
The invention belongs to the technical field of blended coal coking, and particularly relates to a blended coal coking method based on a bifunctional binder.
Background
China has abundant coal resources, wherein coking coal resources account for about 37 percent of the coal resources, and the varieties are complete, but more than 50 percent of the coking coal resources are high-volatile gas coal with weak caking property, and the caking property of fat coal and coking coal is less than 30 percent. At present, the annual output of coke in China is about 4.4 hundred million tons, and the annual output of coking coal in China is about 5.6 hundred million tons; in the coking production, the blending amount of high-quality coking coal is required to reach 50-60 percent, namely about 3.3 hundred million tons, so that the contradiction between the resource storage amount and the requirement is prominent. In addition, a large amount of smokeless pulverized coal is used for power generation and combustion, so that resource utilization is not reasonable, and benefit and profit are low. The method adopts a matched coal coking technology, fully utilizes low-price anthracite powder or weakly caking coal to obtain stable coke quality, becomes an effective way for protecting scarce coking resources and reducing the production cost of the coke, and has been greatly researched at home and abroad.
The patent publication Nos. CN 101333445A, CN 101381645A and CN 101649216A directly cut coal material from charging coal in a certain proportion, mix with tar residue, coke, coal dust or waste plastics, and press-mold after stirring and kneading; the formed briquette is sent back to the charging coal conveying system through a belt and then is used for coking by a coke oven. In the process, the coal material for forming is the same as the bulk coal material fed into the furnace, and the main purpose is to carry out harmless treatment on the tar residue and solve the environmental protection problem of coking. Because the amount of the tar residues is limited, the yield of the molded coal is limited, so that large-scale molded coal production cannot be carried out, and simultaneously, non-caking pulverized coal such as anthracite and the like cannot be used for coking matched coal.
The patent publication No. CN 1919987A provides a method and a system for producing coal briquette by using coking organic waste and weak caking coal as raw materials, the method adopts coking plant organic waste as a binder, the coking plant organic waste and the weak caking coal are uniformly mixed according to a certain proportion for cold press molding, the coal briquette is used as a coking raw material, and the comprehensive effects of thorough harmless treatment and resource utilization of the coking organic waste, multiple blending of the weak caking coal and improvement of the metallurgical coke quality can be achieved. The weakly caking coal mainly refers to gas coal and lean coal for coking, and does not comprise non-caking coal materials such as anthracite fine coal, coke powder and the like; in addition, the coking organic waste needs to be pretreated under the external heating condition, the process is complex and the pollutant discharge is serious.
In order to utilize abundant weak caking coal resources in east China, improve the coke quality and adapt to the blast furnace requirement, a Baokang stage I project introduces a new-day iron blending type coal coking process, the binder mainly adopts maltha-modified petroleum asphalt and tar asphalt, the blending proportion of medium-sized coal in coking coal is about 30 percent, and the blending proportion of the weak caking coal such as gas coal and the like can be increased by about 15 percent. But the process flow is complex, the occupied area is large, and the investment is huge.
In view of this, Bao steel III stage engineering has introduced the coal briquette technology of simplified flow, its characteristic is that the coal ratio of coal material for shaping and powdered coal as fired is different, the floor area of apparatus and construction investment are obviously reduced, the power consumption such as electricity, steam, etc. is obviously reduced. The binder is still soft asphalt, and the mixture ratio of the molded coal is set to be 15 percent. Because the soft asphalt is used as the binder, the manufacturing cost of the molded coal is increased, and the molded coal is difficult to be widely applied.
Disclosure of Invention
The invention aims at solving the problems of the existing matched coal coking method, aims to save and protect scarce coking coal resources, reasonably and fully utilize non-caking or weak-caking coal resources such as anthracite powder coal and the like, and provides a matched coal coking method based on a bifunctional binder.
The invention adopts the following technical scheme:
a dual-functional binder-based matched coal coking method comprises the following steps:
adding a bifunctional binder which accounts for 7-20 wt% of the coal material for molding into the coal material for molding, stirring and humidifying at normal temperature until the moisture content is 8-17 wt% of the coal material for molding, uniformly mixing, and standing for 5-20 min for pre-bonding;
feeding the pre-bonded coal material into a pressure forming device, and forming under the pressure of 10-50 MPa to obtain molded coal;
adding coal briquettes accounting for 20-45 wt% of the coking blending coal into the coking blending coal, and then entering a coke oven for coking;
the bifunctional binder comprises the following components in percentage by mass: 70-92 wt% of coal-based binder, 6-23 wt% of water glass and 2-7 wt% of polyvinyl alcohol.
The coal material for molding is blended coal containing anthracite, lean coal or coke powder or coal material directly cut from coking blended coal.
The proportion of the anthracite, the lean coal or the coke powder in the blended coal accounts for 40-75 wt% of the blended coal.
The coal-based binder comprises the following components in percentage by mass: 38-55 wt% of 100-200 mesh non-sticky coal and 38 wt% of solvent waterUniformly mixing 55 wt% of methanol, 1-5 wt% of methanol and 1-5 wt% of Fe/Na tackifying catalyst in a high-pressure reaction kettle, and introducing CO and N into the high-pressure reaction kettle2Or H2The mixed gas is 1-5 MPa, and the temperature of the reaction kettle is increased to 310-360 ℃ for reaction for 20-60 min.
The invention has the following beneficial effects:
1. the method for producing the coke can greatly improve the proportion of anthracite or weakly caking coal in the raw material of the molded coal on the premise of ensuring the quality of the coke, and reduce the production cost of the coke; if the conventional coking coal is adopted to prepare the briquette, the coke quality can be obviously improved, and the economic benefit is improved.
2. The dual-functional binder with wide raw material sources is used for preparing the molded coal for coking, so that the large-scale production of the molded coal can be realized, and the coking requirement of the blended coal can be met; the dual-functional binder has excellent cold and hot binding performances, the coal material and the binder can be directly subjected to cold binding, and particularly, the coal-based binder and the anthracite can form a carbon-carbon polymerization structure to realize coal material binding in the coking and heating processes.
3. 70-92 wt% of the bifunctional binder is a coal-based binder, so that the category that research and development institutions at home and abroad mainly use organic binders such as soft asphalt, modified asphalt and the like is broken through, and the problem that the organic binders are expensive is solved.
Drawings
FIG. 1 is a flowchart of example 1 of the present invention;
FIG. 2 is a flowchart of embodiment 3 of the present invention.
Detailed Description
Example 1
1. Preparation of bifunctional binders
Uniformly mixing 38 wt% of 200-mesh non-sticky coal with weak reactivity, 55 wt% of water, 3 wt% of methanol and 4 wt% of Fe/Na tackifying catalyst according to mass ratio in a high-pressure reaction kettle, and then introducing CO and a small amount of H into the reaction kettle2The mixed gas is 5 MPa (wherein the CO content is 95 vol%), and the reaction kettle is heated to 350 ℃ to react for 45 min to prepare the coal-based binder.
And uniformly mixing 70 wt% of coal-based binder, 23 wt% of water glass and 7wt% of polyvinyl alcohol to obtain the bifunctional binder.
2. Blending coal
As shown in fig. 1, the mixture ratio of the coal material for molding is as follows: 20wt% of gas coal, 15 wt% of fat coal, 15 wt% of coking coal and 50 wt% of anthracite. The coking and coal blending ratio is as follows: 20% of gas coal, 30% of fat coal, 35% of coking coal and 15% of lean coal.
3. Coking with briquette
Adding 20wt% of bifunctional binder into the coal material for molding, stirring and humidifying at normal temperature until the water content is 15 wt% of the coal material for molding, uniformly mixing, and standing for 20min for pre-bonding; and continuously feeding the pre-bonded coal material into a pressure forming device, and forming under the pressure of 40 MPa to obtain the molded coal.
The prepared molded coal and coking blending coal are synchronously mixed and conveyed to a coal tower according to a certain proportion on a belt conveyor, and then enter a coke oven for coking at the temperature of 1100-1350 ℃. The blending amount of the briquette is 30 wt% of the coking blending coal.
And testing the coke quality index of the test coke sample according to the national standard. The method comprises the following steps: crushing Strength (M)40) And abrasion resistance index (M)10) Reactivity (CRI) and post-reaction strength (CSR), the test results are shown in table 1.
The coking method of the blended coal based on the bifunctional binder is adopted, the blending amount of the anthracite is greatly increased when the blended coal is used for forming coal materials, but the quality index of the coke basically keeps the same level, the metallurgical coke with excellent strength index is obtained, and the coking cost is greatly saved.
TABLE 1 Coke quality index
Example 2
1. Preparation of bifunctional binders
Uniformly mixing 45wt% of 150-mesh non-sticky coal with weak reactivity, 49 wt% of water, 3 wt% of methanol and 3 wt% of Fe/Na tackifying catalyst in a high-pressure reaction kettle according to the mass ratio, and then introducing CO and a small amount of H into the reaction kettle2The mixed gas 4 of (1).5 MPa (wherein the CO content is 95 vol%), heating the reaction kettle to 340 ℃ and reacting for 40 min to obtain the coal-based binder.
And uniformly mixing 80 wt% of coal-based binder, 17wt% of water glass and 3 wt% of polyvinyl alcohol to obtain the bifunctional binder.
2. Blending coal
As shown in fig. 1, the mixture ratio of the coal material for molding is as follows: 20wt% of gas coal, 20wt% of fat coal, 20wt% of coking coal and 40 wt% of anthracite. The coking and coal blending ratio is as follows: 20% of gas coal, 30% of fat coal, 35% of coking coal and 15% of lean coal.
3. Coking with briquette
Adding 15 wt% of bifunctional binder into the coal material for molding, stirring and humidifying at normal temperature until the water content is 13 wt% of the coal material for molding, uniformly mixing, and standing for 15 min for pre-bonding; and continuously feeding the pre-bonded coal material into a pressure forming device, and forming under the pressure of 30 MPa to obtain the molded coal.
The prepared molded coal and coking blending coal are synchronously mixed and conveyed to a coal tower according to a certain proportion on a belt conveyor, and then enter a coke oven for coking at the temperature of 1100-1350 ℃. The blending amount of the briquette is 35 wt% of the coking blending coal.
And testing the coke quality index of the test coke sample according to the national standard. The method comprises the following steps: crushing Strength (M)40) And abrasion resistance index (M)10) Reactivity (CRI) and post-reaction strength (CSR), the test results are shown in table 1.
The coking method of the blended coal based on the bifunctional binder is adopted, the blending amount of the anthracite is greatly increased when the blended coal is used for forming coal materials, but the quality index of the coke basically keeps the same level, the metallurgical coke with excellent strength index is obtained, and the coking cost is greatly saved.
TABLE 2 Coke quality index
Example 3
1. Preparation of bifunctional binders
The mass ratio is the reactivity ratioUniformly mixing 55 wt% of weak 100-mesh non-sticky coal, 43 wt% of water, 1 wt% of methanol and 1 wt% of Fe/Na tackifying catalyst in a high-pressure reaction kettle, and then introducing CO and a small amount of N into the reaction kettle2The mixed gas is 4.0 MPa (wherein the CO content is 90 vol%), and the reaction kettle is heated to 330 ℃ to react for 30 min to prepare the coal-based binder.
And uniformly mixing 92wt% of coal-based binder, 6 wt% of water glass and 2wt% of polyvinyl alcohol to obtain the bifunctional binder.
2. Blending coal
As shown in fig. 2, the coal material for molding is directly cut from the coking blending coal, and therefore, the blending ratio is the same as that of the coking blending coal, and is: 25% of gas coal, 20% of fat coal, 25% of coking coal and 30% of lean coal.
3. Coking with briquette
Adding 10 wt% of bifunctional binder into the coal material for molding, stirring and humidifying at normal temperature until the water content is 10 wt% of the coal material for molding, uniformly mixing, and standing for 10 min for pre-bonding; and continuously feeding the pre-bonded coal material into a pressure forming device, and forming under the pressure of 15 MPa to obtain the molded coal.
The prepared molded coal and coking blending coal are synchronously mixed and conveyed to a coal tower according to a certain proportion on a belt conveyor, and then enter a coke oven for coking at the temperature of 1100-1350 ℃. The blending amount of the briquette is 45wt% of the coking blending coal.
The coke quality index of the test coke sample is tested according to the national standard, and the test result is shown in table 3.
Under the same raw material coal condition, the blending coal coking method based on the bifunctional binder is adopted, the blending amount of high-quality coke fat coal can be reduced, the obtained coke has various indexes superior to those of the coke produced by conventional coal blending coking, and the economic benefit of the product is improved.
TABLE 3 Coke quality index
Claims (1)
1. A coking method of matched coal based on a bifunctional binder is characterized in that: the method comprises the following steps:
adding a bifunctional binder which accounts for 7-20 wt% of the coal material for molding into the coal material for molding, stirring and humidifying at normal temperature until the moisture content is 8-17 wt% of the coal material for molding, uniformly mixing, and standing for 5-20 min for pre-bonding;
feeding the pre-bonded coal material into a pressure forming device, and forming under the pressure of 10-50 MPa to obtain molded coal;
after coal briquettes accounting for 20-45 wt% of the coking blending coal are blended into the coking blending coal, the coking blending coal enters a coke oven to be coked at the temperature of 1100-1350 ℃;
the bifunctional binder comprises the following components in percentage by mass: 70-92 wt% of coal-based binder, 6-23 wt% of water glass and 2-7 wt% of polyvinyl alcohol;
the coal material for forming is blended coal containing anthracite, lean coal or coke powder or coal material directly cut from coking blended coal;
the coal-based binder comprises the following components in percentage by mass: 38-55 wt% of 100-200 mesh non-sticky coal, 38-55 wt% of solvent water, 1-5 wt% of methanol and 1-5 wt% of Fe/Na tackifying catalyst are uniformly mixed in a high-pressure reaction kettle, and CO and N are introduced into the high-pressure reaction kettle2Or H2The mixed gas is 1-5 MPa, wherein the CO content is 90 vol% or 95 vol%, and the reaction kettle is heated to 310-360 ℃ for reaction for 20-60 min to obtain the catalyst;
the proportion of the anthracite, the lean coal or the coke powder in the blended coal accounts for 40-75 wt% of the blended coal.
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| CN115093869A (en) * | 2022-03-22 | 2022-09-23 | 中冶焦耐(大连)工程技术公司 | High-reactivity high-strength heterogeneous coke for hydrogen-rich blast furnace and preparation method thereof |
| CN115093868A (en) * | 2022-03-22 | 2022-09-23 | 中冶焦耐(大连)工程技术公司 | High-reactivity high-strength coke for hydrogen-rich blast furnace and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2444066A1 (en) * | 1974-09-14 | 1976-03-25 | Gudenau Heinrich Wilhelm | Coke from poorly coking coal - by agglomeration of fine coal with binder before normal coking |
| EP1984474A1 (en) * | 2006-02-08 | 2008-10-29 | Gregory Abramovich Berezin | Method and device for producing coke from noncaking coals |
| CN101550372A (en) * | 2009-05-16 | 2009-10-07 | 山西中元煤洁净技术有限公司 | Method for producing carbonized coal with coal material |
| CN103113909A (en) * | 2013-02-01 | 2013-05-22 | 太原理工大学 | Method for modifying and tackifying low-rank coals |
| CN103113949A (en) * | 2013-02-01 | 2013-05-22 | 太原理工大学 | Method for preparing briquette binder |
| CN103992807A (en) * | 2014-06-07 | 2014-08-20 | 太原理工大学 | Method for producing carbonized coal/coke for gasification by large-scale tamping coal cake on coke oven |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE795917A (en) * | 1972-02-25 | 1973-06-18 | Etat De L Argentine Represente | PROCESS FOR PREPARING A BINDER INTENDED TO BE USED FOR THE MANUFACTURE OF METALLURGIC COKES |
| JPS54124005A (en) * | 1978-03-18 | 1979-09-26 | Sumitomo Metal Ind Ltd | Solvent treatment of coal |
| US8921628B2 (en) * | 2011-03-10 | 2014-12-30 | Kior, Inc. | Refractory mixed-metal oxides and spinel compositions for thermo-catalytic conversion of biomass |
| CN103396819B (en) * | 2013-07-26 | 2014-10-29 | 中国矿业大学 | Coal-based carbonaceous intermediate phase preparation method based on elementium |
| CN103468287B (en) * | 2013-09-22 | 2014-12-10 | 重庆大学 | Preparation method of high strength-hyper reactivity iron containing coke |
| US20150291884A1 (en) * | 2014-04-14 | 2015-10-15 | Gennady Georgievich Valyavin | Production method for a modifying coking additive by delayed coking of residue oil |
| US9567654B2 (en) * | 2014-06-24 | 2017-02-14 | Uop Llc | Binder for metallurgical coke and a process for making same |
| CN104087328B (en) * | 2014-07-31 | 2016-01-06 | 孙孟君 | Improve the coking by coke oven method of chemical industry Jiao by long-flame coal proportioning |
-
2019
- 2019-07-04 CN CN201910598059.8A patent/CN110330993B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2444066A1 (en) * | 1974-09-14 | 1976-03-25 | Gudenau Heinrich Wilhelm | Coke from poorly coking coal - by agglomeration of fine coal with binder before normal coking |
| EP1984474A1 (en) * | 2006-02-08 | 2008-10-29 | Gregory Abramovich Berezin | Method and device for producing coke from noncaking coals |
| CN101550372A (en) * | 2009-05-16 | 2009-10-07 | 山西中元煤洁净技术有限公司 | Method for producing carbonized coal with coal material |
| CN103113909A (en) * | 2013-02-01 | 2013-05-22 | 太原理工大学 | Method for modifying and tackifying low-rank coals |
| CN103113949A (en) * | 2013-02-01 | 2013-05-22 | 太原理工大学 | Method for preparing briquette binder |
| CN103992807A (en) * | 2014-06-07 | 2014-08-20 | 太原理工大学 | Method for producing carbonized coal/coke for gasification by large-scale tamping coal cake on coke oven |
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