CN100500805C - Dust settling fine coke reblending coal coking method and its technology - Google Patents
Dust settling fine coke reblending coal coking method and its technology Download PDFInfo
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- CN100500805C CN100500805C CNB2006101249572A CN200610124957A CN100500805C CN 100500805 C CN100500805 C CN 100500805C CN B2006101249572 A CNB2006101249572 A CN B2006101249572A CN 200610124957 A CN200610124957 A CN 200610124957A CN 100500805 C CN100500805 C CN 100500805C
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Abstract
This invention discloses a coal blending method and its technology of dust removal coking coal powder using as lean agent to substitute clean coal. It collects coke dry quenching environmental dust removal coking coal powder, coke dry quenching technological dust removal coking coal powder, coking ground dust moving station dust removal powder, mixing them homogeneously, and then putting them into stockhouse, and then transporting into dosage bunker by leather belt transport machine, and then transporting to leather belt transport machine equipped with electronic scale by dosage plate, and then quantitively transporting to leather belt transport machine equipped with dust fall equipment, and at last, sending into crusher together with other coal for coking and mixing them homogeneously in blending coal room for coking at coking chamber of coke oven.
Description
Technical field
The present invention relates to a kind of coke powder blending coal coking method and technology thereof, particularly relate to a kind of method and technology thereof of returning coal-blending coking with the dedusting coke powder as the alternative cleaned coal of leaning agent.
Background technology
Coal chemical enterprise produces a large amount of coke powders in process of production, because its price is low, contaminate environment is returned after some coking enterprises are pulverized coke powder and is fitted on replacement cleaned coal coking in the coking coal, not only can improve the coke lumpiness, also can obtain certain economic benefits.But because the coke powder water content is big, generally between 8%～15%, in crushing process, phenomenons such as sticking wall, obstruction can occur, bring difficulty to grinding and processing.In " equipment of coke powder blending technology is selected " literary composition of " fuel and chemical industry " the 1st phase in 2005 coke powder blending technology coke powder grinding and processing technology commonly used is disclosed, i.e. wet method processing technology, dry process technology and direct treatment process.Wet method processing technology is to add water in the coke powder crushing process, has flowability after making the coke powder water content reach more than 80%, to eliminate sticking machine latch up phenomenon.The advantage of this technology is the single machine yield height, no dust pollution in the course of processing; Shortcoming be need establish settling tank, floor space is big, capital cost is high, labor strength is big, at the area performance difficulty in winter that freezes, need a large amount of recirculated water, processing charges height, environment had certain pollution.Dry process technology be with coke powder dry to moisture less than 3%, to eliminate sticking machine latch up phenomenon.The advantage of this technology is that treatment capacity is big, but needs drying plant, complex process, and floor space is big, and one-time investment is huge, and contaminate environment.Directly treatment process is to utilize vibration principle, does high-frequency impact and grind material is pulverized in tube by rod iron, and coke powder is normally pulverized between 8%-15% moisture, and sticking machine stops up, and discharging evenly can be regulated.More than three kinds of blending methods and technology common shortcoming thereof be to pulverize in advance to coke powder, thereby increase the input in required equipment and place, labor strength is big, the blending method of coke powder blending coking and the use of technology thereof are restricted, some Steel Complex mix coke powder and work as the fuel use in the coal, or sell at a low price and handle.
Summary of the invention
The purpose of this invention is to provide a kind of coke powder blending coal coking method and the technology thereof that need not pulverize or grind.
To achieve these goals, coke powder is returned coal-blending coking method and technology thereof, the present invention adopts the dedusting coke powder to substitute as leaning agent and enters coke furnace carbonization chamber coking, its dedusting coke powder amount of allocating into≤5% after cleaned coal and other coking coals mix.
After described dedusting coke powder is handled by the rotary conveyor input dosing vessel of feed bin through sealing, send on the rotary conveyor that electronic scales is housed by the batching dish, have on the rotary conveyor of depositing dust facility before quantitatively sending into coal blending chamber pulverizer, behind depositing dust, send in the pulverizer of coal blending chamber and to enter coke furnace carbonization chamber coking after mixing with other coking coals.The coke powder of particle diameter≤0.5mm reaches more than 70% in the described dedusting coke powder.
Dedusting coke powder of the present invention comprises dry coke quenching environmental dust removal coke powder, dry coke quenching technology dedusting coke powder, coking ground station for dust removal dust-removing powder (comprising coke pushing dedusting coke powder and dust collection for charging coal dust), and its ratio is 5:4:1.
Dedusting coke powder of the present invention can also be dry coke quenching environmental dust removal coke powder or coking ground station for dust removal dust-removing powder.
Advantage of the present invention is: because the granularity of dedusting coke powder own is thinner, need not pulverize or grind, test by small coke oven, its result and first wife are more close than the test result, can not only improve the shatter strength of coke and the ratio of the big lump coke of increase, shorten coking time, reduce the coking thermal losses, and technology is simple, facility investment is few, and comprehensive cost reduces greatly, a coke oven of producing 1000000 tons of scales per year, can save comprehensive cost more than 1,000 ten thousand yuan, have tangible economic and social benefit.
Description of drawings
Figure of description is a process flow diagram of the present invention.
Among the figure, feed bin (1), the rotary conveyor of sealing (2), dosing vessel (3), batching dish (4), electronic scales (5), rotary conveyor (6), rotary conveyor (7), depositing dust facility (8), coal blending chamber pulverizer (9).
Embodiment
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
A kind of coke powder blending coal coking method of the present invention and technology thereof, to be the direct employing dedusting coke powder that need not pulverize or grind as leaning agent substitute enters coke furnace carbonization chamber coking after cleaned coal and other coking coals mix for it.
With dry coke quenching environmental dust removal coke powder, dry coke quenching technology dedusting coke powder, coking ground station for dust removal dust-removing powder, collect the back press the mixed of 5:4:1 even after, send into feed bin (1), after rotary conveyor (2) input dosing vessel (3) processing of feed bin (1) through sealing, send on the transfer roller (6) that electronic scales (5) are housed by batching dish (4), the amount of allocating into by≤5%, quantitatively send on the preceding rotary conveyor (7) that has depositing dust facility (8) of coal blending chamber pulverizer (9), after the water jet water spray dust in depositing dust facility (8), send in the coal blending chamber pulverizer (9) and to enter coke furnace carbonization chamber coking after mixing with other coking coals.In the dedusting coke powder of allocating into, the coke powder of particle diameter≤0.5mm reaches more than 70%.
The present invention returns as the alternative cleaned coal of leaning agent with dry coke quenching environmental dust removal coke powder or coking ground station for dust removal dust-removing powder separately and joins coking, its better effects if.
Dust settling fine coke reblending coal coking method of the present invention and technology thereof are through the test of 20kg small coke oven.Before the experiment, each dust-removing powder is carried out sreen analysis and component technical analysis, it the results are shown in Table 1.Analytical results shows, the coke powder output of dry coke quenching environmental dust removal accounts for 50% of ultimate production, from the coke fines size distribution situation, 0.5mm following coke powder accounts for more than 70% of ultimate production, above few of 3mm, the volatile matter of coke powder satisfies the requirement of returning coal-blending coking as leaning agent substantially between 1-2%.The small coke oven test-results sees Table 2.From test-results: the cold strength that dry coke quenching dedusting coke powder compound sample or coking terrestrial station dust-removing powder return coal-blending coking is more close than the test result with the first wife, and slightly improves; Undressed coke screening station coke powder is not suitable for back coal-blending coking fully.Test-results proves that it is feasible adopting dust settling fine coke reblending coal coking method and technology thereof.
Component technical analysis of table 1 dry coke quenching coke powder and grade distribute
In the table 1, environmental dust removal: technology dedusting: coking, dust removing=5: 4: 1
Table 2 20kg small coke oven testing data
In the table 2: sequence number 1 is test contrast sample; Sequence number 2 is coking terrestrial station dust-removing powder testing data; Sequence number 3 is a dry coke quenching dedusting coke powder compound sample testing data; Sequence number 4 is a coke screening station coke powder testing data.
Adopt blending method of the present invention and arts demand thereof to note the following aspects:
1, because of having reduced the volatile matter of mixed coal behind the interpolation coke powder, weakened the gas amount of separating out,, the strong caking coal of some amount will have been arranged simultaneously in mixed coal, to guarantee necessary flowability and cohesiveness so answer the coal of a considerable amount of high volatiles of adapted in the mixed coal;
2, coke powder must be controlled fineness, so that be combined in the coke better;
3, during coal blending, dedusting coke powder and mixed coal want thorough mixing even.
Claims (3)
1, a kind of dust settling fine coke reblending coal coking method, substitute as leaning agent with the dedusting coke powder and to enter coke furnace carbonization chamber coking after cleaned coal and other coking coals mix, it is characterized in that technological process is: after the dedusting coke powder is handled by rotary conveyor (2) the input dosing vessel (3) of feed bin (1) through sealing, send on the rotary conveyor (6) that electronic scales (5) are housed by batching dish (4), quantitatively send on the preceding rotary conveyor (7) that has depositing dust facility (8) of coal blending chamber pulverizer (9), send in the coal blending chamber pulverizer (9) and to enter coke furnace carbonization chamber coking after mixing with other coking coals, the dedusting coke powder amount of allocating into≤5%, wherein the coke powder of particle diameter≤0.5mm reaches more than 70%.
2, dust settling fine coke reblending coal coking method according to claim 1 is characterized in that: described dedusting coke powder comprises dry coke quenching environmental dust removal coke powder, dry coke quenching technology dedusting coke powder, coking ground station for dust removal dust-removing powder, and its ratio is 5:4:1.
3, dust settling fine coke reblending coal coking method according to claim 1 is characterized in that: described dedusting coke powder can also be dry coke quenching environmental dust removal coke powder or coking ground station for dust removal dust-removing powder.
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| CNB2006101249572A CN100500805C (en) | 2006-11-07 | 2006-11-07 | Dust settling fine coke reblending coal coking method and its technology |
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| CN100500805C true CN100500805C (en) | 2009-06-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101222774B1 (en) * | 2004-10-19 | 2013-01-15 | 론자 아게 | On-resin peptide cyclization |
Families Citing this family (11)
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| CN101418221B (en) * | 2007-10-23 | 2012-09-05 | 上海寰球石油化学工程有限公司 | Remixing process of dry pulverized coke and wet pulverized coke of coke making raw material |
| CN102060173A (en) * | 2009-11-17 | 2011-05-18 | 贵阳铝镁设计研究院 | Transferring system for discharging ash of dust collector behind crushing sieving station of gas station of generation furnace |
| CN103146399A (en) * | 2013-03-13 | 2013-06-12 | 济钢集团有限公司 | Reuse device for dry-quenching secondary dust removal coke powder |
| CN104359121B (en) * | 2014-11-06 | 2017-01-11 | 马钢(集团)控股有限公司 | Use of CDQ (coke dry quenching) powder and co-combustion method for CDQ powder |
| CN104357073B (en) * | 2014-11-29 | 2016-04-13 | 莱芜市泰山焦化有限公司 | Dry coke quenching dedusting ash application method in coal blending process |
| CN104848241A (en) * | 2015-04-08 | 2015-08-19 | 首钢京唐钢铁联合有限责任公司 | Coked ash recovery method |
| CN105600492A (en) * | 2015-12-21 | 2016-05-25 | 七台河宝泰隆煤化工股份有限公司 | Conveying process method for prepared coke for gasification |
| CN107964411B (en) * | 2016-10-27 | 2020-02-07 | 武汉钢铁有限公司 | Method for recycling coking coal from dry quenching coke breeze |
| JP6512565B1 (en) * | 2018-09-13 | 2019-05-15 | 日鉄エンジニアリング株式会社 | Coke dry extinguishing system and coke dust removing method in boiler of coke dry extinguishing system |
| CN113736989B (en) * | 2021-08-26 | 2023-04-07 | 武汉钢铁有限公司 | Sintered ore using dust-removing coke and preparation method thereof |
| CN114106862B (en) * | 2021-11-23 | 2022-10-21 | 鄂托克旗红缨煤焦化有限责任公司 | Coke powder coal blending coking system based on clean production coke |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101222774B1 (en) * | 2004-10-19 | 2013-01-15 | 론자 아게 | On-resin peptide cyclization |
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