CN104028357A - A medium-speed mill pulverizing system without an induced draft fan device for waste smoke - Google Patents
A medium-speed mill pulverizing system without an induced draft fan device for waste smoke Download PDFInfo
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- CN104028357A CN104028357A CN201410249591.6A CN201410249591A CN104028357A CN 104028357 A CN104028357 A CN 104028357A CN 201410249591 A CN201410249591 A CN 201410249591A CN 104028357 A CN104028357 A CN 104028357A
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Abstract
This invention discloses a medium-speed mill pulverizing system without an induced draft fan device for waste smoke, belonging to the pulverizing technical field of blast furnace injection coal. The medium-speed mill pulverizing system includes a hot-wind furnace, a shutter adjusting valve, a dryer, a medium-speed mill, a bag-type dust catcher and a main exhauster. The hot-wind furnace, the shutter adjusting valve and the entrance of the dryer are connected by pipes whose diameter is 1420mm. The exit of the dryer, the medium-speed mill, the bag-type dust catcher and the exit of the main exhauster are connected by pipes whose diameter is 1620mm. The waste smoke of the hot-wind furnace is sucked in the dryer, the medium-speed mill and the bag-type dust catcher by the main exhauster, and then the smoke through the main exhauster is ejected in the air. The raw coal in the medium-speed mill is dried at last. The beneficial effect of the medium-speed mill pulverizing system is that the induced draft fan device for waste smoke is removed, which can lower the electricity consumption of the pulverizing system so as to lower the production cost of the pulverizing system. The device area and the induced draft fan device are also saved and the device investment for a new pulverizing system is also reduced.
Description
Technical field
The invention belongs to pulverized coal injection into blast furna powder-making technique field, particularly provide a kind of medium-speed milling pulverization system to cancel the equipment of useless smoke induced draught fan.
Background technology
Pulverized coal injection is the important means that reduces ironmaking cost.Capital equipment has: hot-blast stove, waste gas air-introduced machine, drier, medium-speed pulverizer, sack cleaner, main Powder discharging fan and pipeline form (seeing Fig. 1).Between hot-blast stove, waste gas air-introduced machine and drier entrance, with ￠ 1420mm pipeline, connect.Between dryer export, medium-speed pulverizer, sack cleaner and the outlet of main Powder discharging fan, with ￠ 1620mm pipeline, connect.Air-introduced machine introduces the useless flue gas of hot-blast stove into drier, and main Powder discharging fan, the hot blast suction medium-speed pulverizer of drier, is entering sack cleaner, by main exhaust fan gas, enters in atmosphere.Waste gas air-introduced machine entrance is apart from 140 meters of blast funnace hot blast stove exhaust piping contacts.Finally the raw coal in medium-speed pulverizer is dried.Heating furnace entrance air quantity and medium-speed pulverizer entrance negative pressure are adjusted with the air door of air-introduced machine, and useless smoke induced draught fan electricity consumption of equipment amount is larger.
Summary of the invention
The object of the present invention is to provide a kind of medium-speed milling pulverization system to cancel the equipment of useless smoke induced draught fan, reduce the cost of investment of production cost and the new pulverized coal preparation system of traditional pulverized coal preparation system.
The present invention includes hot-blast stove, blinds control valve, drier, medium-speed pulverizer, sack cleaner and main Powder discharging fan (seeing Fig. 2).Between hot-blast stove, blinds control valve and drier entrance, with ￠ 1420mm pipeline, connect.Between dryer export, medium-speed pulverizer, sack cleaner and the outlet of main Powder discharging fan, with ￠ 1620mm pipeline, connect.Main Powder discharging fan is pumped into drier, medium-speed pulverizer, sack cleaner exhaust gas of hot-blast stove, and the gas by main exhaust fan enters in atmosphere, finally the raw coal in medium-speed pulverizer is dried.
Useless smoke induced draught fan needs to regulate air quantity and medium-speed pulverizer entrance negative pressure after cancelling.For solving the said equipment technical problem, the invention reside in useless smoke induced draught fan equipment, after cancelling, with pipeline, connect complete increase blinds control valve, material must be high temperature resistant more than 200 ℃, prevent high temperature deformation, adjustable range 0-90 degree and the flexible adjustment of valve, valve mechanism must be louver valve, regulates air quantity even, ban use of turnover panel control valve, because turnover panel control valve is subject to the impact of rising-heat contracting-cold, adjust dumb and air intake is inhomogeneous, affect the normal operation of whole system.By control valve opening, control the stable of air quantity and mill entrance negative pressure, the production run of stablizing whole system.
Beneficial effect of the present invention is to cancel useless smoke induced draught fan equipment, can reduce the power consumption of pulverized coal preparation system, thereby reduce pulverized coal preparation system production cost, and save equipment place and air-introduced machine equipment.For newly-built pulverized coal preparation system, can also reduce the investment of equipment.
Accompanying drawing explanation
Fig. 1, traditional pulverized coal preparation system structural representation.Illustrate: traditional pulverized coal preparation system structural representation is with air-introduced machine, the waste gas of blast funnace hot blast stove to be guided in drier, between equipment, with pipeline, joins.
Pulverized coal preparation system structural representation after Fig. 2, innovation.Illustrate: the present invention removes air-introduced machine equipment, with pipeline, connect and increase blinds control valve, with system main exhaust fan, the waste gas of blast funnace hot blast stove is guided in drier, between equipment, with pipeline, join.
The specific embodiment
The present invention includes hot-blast stove, blinds control valve, drier, medium-speed pulverizer, sack cleaner and main Powder discharging fan (seeing Fig. 2).Between hot-blast stove, blinds control valve and drier entrance, with ￠ 1420mm pipeline, connect.Between dryer export, medium-speed pulverizer, sack cleaner and the outlet of main Powder discharging fan, with ￠ 1620mm pipeline, connect.Main Powder discharging fan is pumped into drier, medium-speed pulverizer, sack cleaner exhaust gas of hot-blast stove, and the gas by main exhaust fan enters in atmosphere, finally the raw coal in medium-speed pulverizer is dried.
For further setting forth the present invention, reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing, the specific implementation method and the technological process that are applicable to medium-speed milling pulverization system cancellation waste gas air-introduced machine equipment that according to the present invention, propose are elaborated.
Concrete implementation step and explanation:
The first step: cancel smoke induced draught fan equipment.
Second step: former air-introduced machine gateway connects complete with pipeline, increase a blinds control valve, adjustable range 0-90 degree, regulates the stable mill of wind flow entrance negative pressure.
Technological process and description of equipment:
Fig. 1,2 is shown in technological process before the reform afterwards.Fig. 1 before the reform smoke induced draught fan equipment joins being grinding into a mouthful front-end pipelines, and main exhaust fan joins at mill rear end pipeline.Air-introduced machine is mainly that blast-furnace hot-air furnace exhaust is guided to mill front end.Fig. 2 reforms the useless flue gas Fan Equipment of rear cancellation, complete with pipeline connection, increases blinds control valve and regulates air quantity.Grinding system is guided to the useless flue gas of blast funnace hot blast stove in mill with main Powder discharging fan, dries raw coal, by deduster, filters, and waste gas enters atmosphere.Waste gas air-introduced machine entrance is apart from 140 meters of blast-furnace hot-air furnace exhaust contacts.
In old scrap build and new design, useless smoke induced draught fan equipment is not installed, because blinds control valve is finally stable mill entrance negative pressure.Be to provide last one valve to mill hot blast, material must be high temperature resistant more than 200 ℃, prevent high temperature deformation, adjustable range 0-90 degree and the flexible adjustment of valve, valve mechanism must be louver valve, regulates air quantity even, ban use of turnover panel control valve, because turnover panel control valve is subject to the impact of rising-heat contracting-cold, adjust dumb and air intake is inhomogeneous, affect the normal production of whole system.
By cancelling waste gas air-introduced machine equipment, security of system is produced normal, has reached the object that reduces system power consumption and production cost.
Claims (1)
1. medium-speed milling pulverization system is cancelled an equipment for useless smoke induced draught fan, comprises hot-blast stove, drier, medium-speed pulverizer, blinds control valve, sack cleaner and main Powder discharging fan; It is characterized in that, between hot-blast stove, blinds control valve and drier entrance, with ￠ 1420mm pipeline, connect; Between dryer export, medium-speed pulverizer, sack cleaner and the outlet of main Powder discharging fan, with ￠ 1620mm pipeline, connect; Main Powder discharging fan is pumped into drier, medium-speed pulverizer, sack cleaner exhaust gas of hot-blast stove, and the gas by main exhaust fan enters in atmosphere, finally the raw coal in medium-speed pulverizer is dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249591.6A CN104028357A (en) | 2014-06-07 | 2014-06-07 | A medium-speed mill pulverizing system without an induced draft fan device for waste smoke |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410249591.6A CN104028357A (en) | 2014-06-07 | 2014-06-07 | A medium-speed mill pulverizing system without an induced draft fan device for waste smoke |
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| CN104028357A true CN104028357A (en) | 2014-09-10 |
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| CN201410249591.6A Pending CN104028357A (en) | 2014-06-07 | 2014-06-07 | A medium-speed mill pulverizing system without an induced draft fan device for waste smoke |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109772569A (en) * | 2019-01-28 | 2019-05-21 | 常州市长江热能有限公司 | A kind of pulverized coal preparation system |
Citations (7)
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|---|---|---|---|---|
| DE3320264A1 (en) * | 1983-06-04 | 1984-12-06 | Johann 5060 Bergisch-Gladbach Jerga | Raw coal comminuting system and apparatus for performing the process |
| CN201000057Y (en) * | 2007-01-09 | 2008-01-02 | 北京科技大学 | Small-sized coal fines combustion boiler set |
| CN201304356Y (en) * | 2008-11-27 | 2009-09-09 | 武汉钢铁(集团)公司 | Temperature-control blast furnace coal powder preparation system |
| CN202691081U (en) * | 2012-07-11 | 2013-01-23 | 江苏海陵机械有限公司 | Sealing structure of electric louver valve |
| CN202808735U (en) * | 2012-09-28 | 2013-03-20 | 中冶东方工程技术有限公司 | Waste heat flue gas recycling and adjusting device |
| CN103335530A (en) * | 2013-07-03 | 2013-10-02 | 中冶焦耐工程技术有限公司 | Coke oven flue gas waste heat recovery technology |
| CN203602637U (en) * | 2013-12-09 | 2014-05-21 | 中天钢铁集团有限公司 | Device for injecting mixed bituminous coal by virtue of exhaust gas self-circulation |
-
2014
- 2014-06-07 CN CN201410249591.6A patent/CN104028357A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3320264A1 (en) * | 1983-06-04 | 1984-12-06 | Johann 5060 Bergisch-Gladbach Jerga | Raw coal comminuting system and apparatus for performing the process |
| CN201000057Y (en) * | 2007-01-09 | 2008-01-02 | 北京科技大学 | Small-sized coal fines combustion boiler set |
| CN201304356Y (en) * | 2008-11-27 | 2009-09-09 | 武汉钢铁(集团)公司 | Temperature-control blast furnace coal powder preparation system |
| CN202691081U (en) * | 2012-07-11 | 2013-01-23 | 江苏海陵机械有限公司 | Sealing structure of electric louver valve |
| CN202808735U (en) * | 2012-09-28 | 2013-03-20 | 中冶东方工程技术有限公司 | Waste heat flue gas recycling and adjusting device |
| CN103335530A (en) * | 2013-07-03 | 2013-10-02 | 中冶焦耐工程技术有限公司 | Coke oven flue gas waste heat recovery technology |
| CN203602637U (en) * | 2013-12-09 | 2014-05-21 | 中天钢铁集团有限公司 | Device for injecting mixed bituminous coal by virtue of exhaust gas self-circulation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109772569A (en) * | 2019-01-28 | 2019-05-21 | 常州市长江热能有限公司 | A kind of pulverized coal preparation system |
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Application publication date: 20140910 |