CN103555871A - Coke powder and coal blending technology and device - Google Patents
Coke powder and coal blending technology and device Download PDFInfo
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- CN103555871A CN103555871A CN201310481251.1A CN201310481251A CN103555871A CN 103555871 A CN103555871 A CN 103555871A CN 201310481251 A CN201310481251 A CN 201310481251A CN 103555871 A CN103555871 A CN 103555871A
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Abstract
The invention discloses a coke powder and coal blending technology and a device. According to the technology, coke powder is filled through a bus-transport coke powder inlet and is collected in a coke powder tank by the use of a cloth bag; the coke powder filled in the tank is filled in a blowing tank, nitrogen is filled from the top, and fluidized air is filled from the bottom so as to make the coke powder uniform in the blowing tank; the proportion of raw coal blended in the coke powder can reach 0-20%, pressure of the blowing tank and fluidized air quantity are made constant, and opening degree of a regulating valve is adjusted within the range of 5%-100% so as to achieve the proportion requirement; an electronic metering scale is arranged on the blowing tank group, transmission capacity of the coke powder is determined, and the opening degree of the regulating valve is manually adjusted for correction; and by the utilization of the pressure of nitrogen in the blowing tank, the coke powder is injected into a grinding machine to complete transportation of the coke powder. In comparison with the prior art, the invention has beneficial effects as follows: the benefit of environmental protection is prominent; pollution and waste of coke powder are reduced; mixing ratio of coke powder to raw coal is raised greatly; ironmaking cost is decreased effectively; the coke powder and the coal are blended uniformly; coal dust index stability is high; introduction of water in raw coal is minimized; energy consumption is reduced; oxygen content of the system also can be reduced; and safety factor of the system is raised.
Description
Technical field
The present invention relates to metallurgical technology field, especially a kind of coke powder coal blending process and device.
Background technology
Dry coke quenching dedusting ash and to transport coke process dedusting ash (hereinafter to be referred as " coke powder ") carbon content high, fixed carbon index can reach more than 85%, has very high utility value.At present, traditional mode is that the coke powder collecting is utilized after humidifier humidification and is sent on belt and mixes with raw coal, because the water-absorbent of coke powder is bad, in daily production, this kind of mode can cause reentrainment of dust, environmental pollution is very big, and is subject to the restriction of humidifier equipment, and coke powder operational throughput is limited, cannot make full use of coke powder, be unfavorable for reducing ironmaking cost.
Summary of the invention
The object of the present invention is to provide a kind of coke powder coal blending process and device, utilize coke powder coal-blending device, control the ratio of coke powder between 0～20%, match with valve body aperture and adjust the usage quantity of coke powder.There is environmental protection, save coke powder, improve coke powder operational throughput, improve coal dust index stability, improve pulverized coal preparation system safety coefficient.
For achieving the above object, the present invention realizes by the following technical solutions:
A coal blending process, is characterized in that, concrete steps are as follows:
1) coke powder is collected coke powder to be transported in coke powder tank by cloth bag by the automotive coke powder entrance of coke powder coal-blending device;
2) by add coke powder in winding-up tank, top is filled with nitrogen, and bottom is filled with fluidized wind, makes coke powder in tank, reach uniform state;
3) coke powder accounts for raw coal ratio control between 0～20%, constant injection tank pressure and fluidisation air quantity, and variable valve valve body aperture is in 5%～100%, and the coke powder ratio required according to blast furnace, reaches requirement by changing control valve opening;
4) in winding-up tank group, electronic weighing balance is set, system is by regularly calculating and confirm whether coke powder conveying is normal, and while occurring that numerical value is inaccurate, manual setting regulation valve body aperture is revised the 20min tank group changes in weight value of jetting in the time;
5) winding-up pipeline oblique cutting enters on feeder coal unloading tube road, utilizes nitrogen pressure in winding-up tank, with winding-up form, coke powder is directly sprayed into and in grinding machine, completes coke powder and carry.
Described coke powder coal-blending device, it is characterized in that, comprise automotive coke powder entrance, feeder, grinding machine, winding-up tank, coke powder tank, variable valve, cloth bag, described automotive coke powder entrance is arranged on coke powder tank, cloth bag is arranged on coke powder tank top, coke powder tank is connected with winding-up tank, and winding-up pot bottom is provided with variable valve, and winding-up pipeline is connected with feeder coal unloading tube.
The quantity of described winding-up tank is two.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention increases substantially the blending ratio of coke powder in raw coal, reduces ironmaking cost effect remarkable, in course of conveying, without coke powder, loses, wastes, accomplish effectively to save coke powder resource, non-environmental-pollution, environmental benefit is outstanding, raw coal mixes with coke powder, coal dust index is stable, and coal dust is when stove internal combustion, and heat is supplied with more steady, in stove, Gas Flow distribution is more reasonable, to blast furnace operating, create convenience, nitrogen injection can reduce pulverized coal preparation system oxygen level, improves pulverized coal preparation system safety coefficient.
Accompanying drawing explanation
Fig. 1 is structure iron of the present invention.
1-automotive coke powder entrance 2-pressure release valve 3-constant pressure valve 4-equalizer valve 5-reverse checkvalve 6-fluidisation valve 7-cleaning valve 8-trip valve 9-feeder 10-grinding machine 11-winding-up tank 12-coke powder tank 13-variable valve 14-cloth bag
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further illustrated:
As shown in Figure 1, a kind of coke powder coal blending process, is characterized in that, concrete steps are as follows:
1) coke powder, by coke powder coal-blending device automotive coke powder entrance, is collected coke powder to be transported in coke powder tank by cloth bag;
2) by add coke powder in winding-up tank, top is filled with nitrogen, and bottom is filled with fluidized wind, makes coke powder in tank, reach uniform state;
3) coke powder accounts for raw coal ratio control between 0～20%, constant injection tank pressure and fluidisation air quantity, and variable valve valve body aperture is in 5%～100%, and the coke powder ratio required according to blast furnace, reaches requirement by changing control valve opening;
4) in winding-up tank group, electronic weighing balance is set, system is by regularly calculating and confirm whether coke powder conveying is normal, and while occurring that numerical value is inaccurate, manual setting regulation valve body aperture is revised the 20min tank group changes in weight value of jetting in the time;
5) winding-up pipeline oblique cutting enters on feeder coal unloading tube road, utilizes nitrogen pressure in winding-up tank, with winding-up form, coke powder is directly sprayed into and in grinding machine, completes coke powder and carry.
Coke powder delivery system, by automotive coke powder entrance 1, pressure release valve 2, constant pressure valve 3, equalizer valve 4, reverse checkvalve 5, fluidisation valve 6, cleaning valve 7, trip valve 8, feeder 9, grinding machine 10, winding-up tank 11, coke powder tank 12, variable valve 13 and cloth bag 14 form, it is characterized in that, described automotive coke powder entrance 1 is arranged on coke powder tank 12, cloth bag 14 is arranged on coke powder tank top, coke powder tank 12 is connected with winding-up tank 11, pressure release valve 2, constant pressure valve 3, equalizer valve 4 is arranged on winding-up tank 11 tops, winding-up tank 11 bottoms are provided with fluidisation valve 6, trip valve 8, variable valve 13, reverse checkvalve 5, cleaning valve 7, winding-up pipeline is connected with feeder 9 coal unloading tubes, variable valve 13 is arranged on the pipeline of winding-up tank 11 outlets, the quantity of winding-up tank 11 is two.
The quantity of winding-up tank 11 is two, coherent in order to jet, and after winding-up tank 11 winding-ups finish, another can work on, and keeps the continuity of winding-up.The effect of cleaning valve 7 is that winding-up finishes rear cleaning pipeline, keeps clean in pipeline, is used for blowback pipeline in line clogging situation, clear pipeline foreign material thoroughly.Fluidisation valve 6 is responsible for controlling inflation, makes coke powder become winding-up state, and reverse checkvalve 5 can be controlled gas is passed through, and can not make coke powder pass through, and prevents coke powder blowback.Equalizer valve 4 is responsible for controlling in winding-up tank 11 and is filled with nitrogen, makes it reach certain jetting pressure.Pressure release valve 2 is responsible for being controlled at after winding-up finishes the interior gas of winding-up tank 11 is emitted, and the tank 11 that makes to jet keeps atmospheric pressure state, for next step packs coke powder into, provides preparation.The loss that constant pressure valve 3 is responsible for supplementing pressure in winding-up process, with constant winding-up tank internal pressure.
Coke powder ratio control, between 0～20%, according to coke powder day output and coal powder blowing amount, is determined coke powder usage quantity, if can utilize whole coke powders, coke powder ratio is substantially at 11%-20%; As running into the maintenance of blast furnace staying or chemical industry coke oven, winding-up amount and coke powder amount all have without degree and change, thereby coke powder ratio fluctuates in 20% scope, but the value of tending towards stability generally.
Coke powder delivery system floor space is little, is easy to around build at grinding machine 10, and fed distance is shorter.Effectively improve and beat coke powder amount, and whole process is without airborne dust, without environmental hazard.Winding-up concentration is low, without installing mixed once device additional, secondary mixer destroys stock column in pipeline, supplementary pressure and change solid-gas ratio.The mode of can employing system fixing winding-up tank 11 pressure and fluidisation air quantity, reaches the interior solid-gas ratio of winding-up tank 11 constant, installs variable valve 13 on pipeline additional, utilizes to change variable valve 13 apertures and adjust coke powder operational throughput.
Claims (3)
1. a coke powder coal blending process, is characterized in that, concrete steps are as follows:
1) coke powder is collected coke powder to be transported in coke powder tank by cloth bag by the automotive coke powder entrance of coke powder coal-blending device;
2) by add coke powder in winding-up tank, top is filled with nitrogen, and bottom is filled with fluidized wind, makes coke powder in tank, reach uniform state;
3) coke powder accounts for raw coal ratio control between 0～20%, constant injection tank pressure and fluidisation air quantity, and variable valve valve body aperture is in 5%～100%, and the coke powder ratio required according to blast furnace, reaches requirement by changing control valve opening;
4) in winding-up tank group, electronic weighing balance is set, system is by regularly calculating and confirm whether coke powder conveying is normal, and while occurring that numerical value is inaccurate, manual setting regulation valve body aperture is revised the 20min tank group changes in weight value of jetting in the time;
5) winding-up pipeline oblique cutting enters on feeder coal unloading tube road, utilizes nitrogen pressure in winding-up tank, with winding-up form, coke powder is directly sprayed into and in grinding machine, completes coke powder and carry.
2. the coke powder coal-blending device described in claim 1 method, it is characterized in that, comprise automotive coke powder entrance, feeder, grinding machine, winding-up tank, coke powder tank, variable valve, cloth bag, described automotive coke powder entrance is arranged on coke powder tank, cloth bag is arranged on coke powder tank top, coke powder tank is connected with winding-up tank, and winding-up pot bottom is provided with variable valve, and winding-up pipeline is connected with feeder coal unloading tube.
3. coke powder coal-blending device according to claim 2, is characterized in that, the quantity of described winding-up tank is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310481251.1A CN103555871A (en) | 2013-10-14 | 2013-10-14 | Coke powder and coal blending technology and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310481251.1A CN103555871A (en) | 2013-10-14 | 2013-10-14 | Coke powder and coal blending technology and device |
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| CN103555871A true CN103555871A (en) | 2014-02-05 |
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| CN201310481251.1A Pending CN103555871A (en) | 2013-10-14 | 2013-10-14 | Coke powder and coal blending technology and device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359121A (en) * | 2014-11-06 | 2015-02-18 | 马钢(集团)控股有限公司 | Use of CDQ (coke dry quenching) powder and co-combustion method for CDQ powder |
| CN108300824A (en) * | 2018-02-06 | 2018-07-20 | 南通东来冶金装备有限公司 | A kind of coking dedusting ash coke powder blast furnace blowing synergy utilizes system and technique |
| CN115216353A (en) * | 2022-07-18 | 2022-10-21 | 上海宝越耐火材料有限公司 | Preparation method of sintered coke powder |
| CN115404087A (en) * | 2022-09-28 | 2022-11-29 | 洛阳龙泽能源有限公司 | Coke powder recovery mechanism for coke powder bin |
-
2013
- 2013-10-14 CN CN201310481251.1A patent/CN103555871A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359121A (en) * | 2014-11-06 | 2015-02-18 | 马钢(集团)控股有限公司 | Use of CDQ (coke dry quenching) powder and co-combustion method for CDQ powder |
| CN108300824A (en) * | 2018-02-06 | 2018-07-20 | 南通东来冶金装备有限公司 | A kind of coking dedusting ash coke powder blast furnace blowing synergy utilizes system and technique |
| CN115216353A (en) * | 2022-07-18 | 2022-10-21 | 上海宝越耐火材料有限公司 | Preparation method of sintered coke powder |
| CN115404087A (en) * | 2022-09-28 | 2022-11-29 | 洛阳龙泽能源有限公司 | Coke powder recovery mechanism for coke powder bin |
| CN115404087B (en) * | 2022-09-28 | 2023-07-25 | 洛阳龙泽能源有限公司 | Coke powder recycling mechanism for coke powder bin |
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Application publication date: 20140205 |