CN1285387A - Hot air blowing coking coal grading and moisture controlled coal preparation process - Google Patents
Hot air blowing coking coal grading and moisture controlled coal preparation process Download PDFInfo
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- CN1285387A CN1285387A CN 00123021 CN00123021A CN1285387A CN 1285387 A CN1285387 A CN 1285387A CN 00123021 CN00123021 CN 00123021 CN 00123021 A CN00123021 A CN 00123021A CN 1285387 A CN1285387 A CN 1285387A
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Abstract
The present invention discloses a coking coal preparation process capable of making hot-air classification and controlling water content, and is technically characterized by using airstream whose flow rate is 0.5-4 m/s and temp. is 200 deg.C-600 deg.C in the fluidized bed to make coking coal reduce and stabilize water content, and obtain classification and pulverization, so that it can reduce coke production cost, improve coke quality and is favourable for environmental protection.
Description
The present invention relates to adopt fluidization and hot swapping to handle the technical field that the coking coal pre-treatment is equipped with coal, particularly coking coal hot air blowing grading and moisture controlled coal preparation technology
Traditional coking coal coal preparation technology is: the coking coal of the different trades mark proportions containing moisture about 11%, and after entering pulverizer more together and pulverizing, the tower of delivering coal is in order to coking.Because the structure of hardness, size composition and each grade of various coal charges exists significant difference, the coking coal that this technology obtains is unfavorable for reducing the coking energy consumption, improve coke quality and polygamy is gone into the lower inexpensive coal of cohesiveness.
The coking coal Pneumatic Selective Crushing Process that existing USSR (Union of Soviet Socialist Republics) is used the seventies is: coke making and coal blending is through fluidized bed air flow point level, the lump coal pulverizings → classification told, and repeated treatments is to end.This process optimization coke making and coal blending size composition, produce effects such as improving coke quality thus, see Russian magazine " К О К С И Х И М И Я " 9 phase p1-6,2 phase p2-4 in 1985 in 1974,7 phase p11-13,5 phase p2-4 in 1989 in 1987 for details.The coking coal humidifying technology (CMC) that existing Japan uses the eighties is: coke making and coal blending drying machine thermal medium drying, reduce and stable coal charge moisture.This technology reduces and has stablized the moisture of coking coal, produce to reduce the coking energy consumption thus, improve effect such as coke quality, see Japanese magazine " コ one Network ス, サ one キ ユ ラ " the 1st phase of nineteen ninety P26-30, Chinese magazine " external coking chemistry " the 1st phase of nineteen ninety-five P3-8, " Coal Chemical Industry " nineteen ninety-five the 3rd phase P46-54 for details.
Purpose of the present invention is intended to found a kind of coking coal size composition that both helped optimizing, and helps again reducing and the coal preparation technology of stable coking coal moisture.Adopted in the fluidized bed air separating moisture eliminator, coking coal has been carried out fractionated simultaneously, its moisture is reduced and be stabilized in certain level with hot gas flow.Be referred to as hot air blowing grading and moisture controlled coal preparation technology (SCMC).
Task of the present invention is finished by following Technology.
Coking coal hot air blowing grading and moisture controlled coal preparation technology, it is characterized in that: coking coal is in the fluidized bed air separating moisture eliminator, be subjected to the air-flow effect of 200 ℃～600 ℃ of flow velocity 0.5-4m/s, temperature, when reducing and stablizing its moisture, carry out classification, be divided into beans and lump coal.Lump coal is mixed in the feed coal after pulverizer is pulverized, and enters the selection by winnowing moisture eliminator together and carries out classification, so is circulated to end.The lump coal that sub-elects can also directly be sneaked in the pellet coal after pulverizing.The fine coal that beans reclaims behind humidification then and from selection by winnowing moisture eliminator expellant gas (tail gas) mixes, and the tower of delivering coal is in order to coking.
The invention has the advantages that: in an equipment, obtain simultaneously that moisture content is suitable, size composition rational coking coal materials again.Such coal charge coking, the effect of can reach reduction coking energy consumption, improve coke quality, polygamy hanging down inexpensive coking coal kind, minimizing coked waste water and topsoil with cohesiveness.
Fig. 1 is coking coal hot air blowing grading and moisture controlled coal preparation process flow sheet.
Embodiment 1
Coking coal hot air blowing grading and moisture controlled coal preparation technological process such as accompanying drawing.Feed coal quantitatively adds fluidized bed air separating moisture eliminator (2) through coal bunker (1), coal charge is subjected to carrying out drying and classification from the air-flow effect of roasting kiln (4) at this, be divided into beans and lump coal, after beans is discharged from the selection by winnowing moisture eliminator, be mixed with the fine coal behind the humidification that reclaims from fly-ash separator (6), the coal tower that is admitted to coke oven (5) is in order to coking.Lump coal then enters pulverizer (3) and pulverizes, and enters air float separator (2) classification together with feed coal then, so is circulated to end.Tail gas after fly-ash separator (6) dedusting is from smoke stack emission.The gas that enters roasting kiln is the stack gas of drawing from coke oven (5) flue.Roasting kiln is provided with gas fuel burning apparatus.
Embodiment 2
The fluidizing gas medium that fluidized-bed uses can also be other hot gas.All the other are with embodiment 1.
Embodiment 3
The lump coal that sub-elects can also directly be sneaked in the pellet coal after pulverizing.All the other are with embodiment 1.
Claims (4)
1. coking coal hot air blowing grading and moisture controlled coal preparation technology, it is characterized in that: coking coal is in the fluidized bed air separating moisture eliminator, be subjected to the air-flow effect of 200 ℃～600 ℃ of flow velocity 0.5-4m/s, temperature, when reducing and stablizing its moisture, carry out classification, be divided into beans and lump coal: lump coal is after pulverizer is pulverized, be mixed in the feed coal, enter the selection by winnowing moisture eliminator together and carry out classification, so be circulated to end; The lump coal that sub-elects can also directly be sneaked in the pellet coal after pulverizing; Beans then and the fine coal that from the tail gas that the selection by winnowing moisture eliminator is discharged, reclaims behind humidification mix, the tower of delivering coal is in order to coking.
2. coking coal hot air blowing grading according to claim 1 and moisture controlled coal preparation technology, it is characterized in that: feed coal quantitatively adds fluidized bed air separating moisture eliminator (2) through coal bunker (1), coal charge is subjected to carrying out drying and classification from the air-flow effect of roasting kiln (4) at this, be divided into beans and lump coal, after beans is discharged from the selection by winnowing moisture eliminator, be mixed with the fine coal that reclaims from fly-ash separator (6) behind the humidification, the coal tower that is admitted to coke oven (5) is in order to coking; Lump coal then enters pulverizer (3) and pulverizes, and enters selection by winnowing moisture eliminator (2) classification together with feed coal then, so is circulated to end; Tail gas after fly-ash separator (6) dedusting is from smoke stack emission; The gas that enters roasting kiln is the stack gas of drawing from coke oven (5) flue; Roasting kiln is provided with gas fuel burning apparatus.
3. coking coal hot air blowing grading according to claim 1 and 2 and moisture controlled coal preparation technology is characterized in that: the fluidizing gas medium that fluidized-bed uses can also be other hot gas.
4. coking coal hot air blowing grading according to claim 1 and 2 and moisture controlled coal preparation technology is characterized in that: the lump coal that sub-elects can also directly be sneaked in the pellet coal after pulverizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00123021A CN1100112C (en) | 2000-09-22 | 2000-09-22 | Hot air blowing coking coal grading and moisture controlled coal preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00123021A CN1100112C (en) | 2000-09-22 | 2000-09-22 | Hot air blowing coking coal grading and moisture controlled coal preparation process |
Publications (2)
| Publication Number | Publication Date |
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| CN1285387A true CN1285387A (en) | 2001-02-28 |
| CN1100112C CN1100112C (en) | 2003-01-29 |
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| CN00123021A Expired - Fee Related CN1100112C (en) | 2000-09-22 | 2000-09-22 | Hot air blowing coking coal grading and moisture controlled coal preparation process |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838540A (en) * | 2010-04-27 | 2010-09-22 | 莱芜钢铁集团有限公司 | Vibrational fluidized bed device for controlling humidity and grading coking coal and fluidizing process thereof |
| CN101870897A (en) * | 2010-07-09 | 2010-10-27 | 山东天力干燥设备有限公司 | Process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and system thereof |
| CN101906310A (en) * | 2010-09-09 | 2010-12-08 | 武汉钢铁(集团)公司 | Method for drying coking coal materials |
| CN1965058B (en) * | 2004-09-30 | 2011-06-01 | 杰富意钢铁株式会社 | Process for production of cokes and productive facilities therefor |
| CN102120215A (en) * | 2010-09-19 | 2011-07-13 | 中国科学院过程工程研究所 | Solid particle material pneumatic grading preheating and humidifying method and device |
| CN101724422B (en) * | 2009-12-11 | 2013-01-02 | 本溪鹤腾高科技研发（中心）有限公司 | Device for drying and sieving coal by wind power |
| CN103571512A (en) * | 2013-10-15 | 2014-02-12 | 长沙通发高新技术开发有限公司 | Thermal gas flow circulating type winnowed coal humidifying process for indirectly utilizing waste gas of coke oven flue |
| CN104673343A (en) * | 2015-02-16 | 2015-06-03 | 柳州钢铁股份有限公司 | Machine separation and wind separation combined classified crushing and humidity regulation process for in-furnace coking coal |
| CN113834922A (en) * | 2020-06-24 | 2021-12-24 | 上海梅山钢铁股份有限公司 | Method for online drying coke and measuring mechanical strength |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5607556A (en) * | 1994-11-09 | 1997-03-04 | Calderon; Albert | Method for coking coal |
| CN1038195C (en) * | 1995-05-11 | 1998-04-29 | 邱云虎 | Anthracite cocking process |
-
2000
- 2000-09-22 CN CN00123021A patent/CN1100112C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1965058B (en) * | 2004-09-30 | 2011-06-01 | 杰富意钢铁株式会社 | Process for production of cokes and productive facilities therefor |
| CN101724422B (en) * | 2009-12-11 | 2013-01-02 | 本溪鹤腾高科技研发（中心）有限公司 | Device for drying and sieving coal by wind power |
| CN101838540A (en) * | 2010-04-27 | 2010-09-22 | 莱芜钢铁集团有限公司 | Vibrational fluidized bed device for controlling humidity and grading coking coal and fluidizing process thereof |
| CN101870897A (en) * | 2010-07-09 | 2010-10-27 | 山东天力干燥设备有限公司 | Process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and system thereof |
| CN101870897B (en) * | 2010-07-09 | 2013-03-27 | 山东天力干燥股份有限公司 | Process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and system thereof |
| CN101906310A (en) * | 2010-09-09 | 2010-12-08 | 武汉钢铁(集团)公司 | Method for drying coking coal materials |
| CN101906310B (en) * | 2010-09-09 | 2013-01-02 | 武汉钢铁(集团)公司 | Method for drying coking coal materials |
| CN102120215A (en) * | 2010-09-19 | 2011-07-13 | 中国科学院过程工程研究所 | Solid particle material pneumatic grading preheating and humidifying method and device |
| CN102120215B (en) * | 2010-09-19 | 2013-05-01 | 中国科学院过程工程研究所 | Solid particle material pneumatic grading preheating and humidifying method and device |
| CN103571512A (en) * | 2013-10-15 | 2014-02-12 | 长沙通发高新技术开发有限公司 | Thermal gas flow circulating type winnowed coal humidifying process for indirectly utilizing waste gas of coke oven flue |
| CN104673343A (en) * | 2015-02-16 | 2015-06-03 | 柳州钢铁股份有限公司 | Machine separation and wind separation combined classified crushing and humidity regulation process for in-furnace coking coal |
| CN113834922A (en) * | 2020-06-24 | 2021-12-24 | 上海梅山钢铁股份有限公司 | Method for online drying coke and measuring mechanical strength |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1100112C (en) | 2003-01-29 |
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