CN103742791A - Converter steel-making sludge pipeline conveying system and method - Google Patents
Converter steel-making sludge pipeline conveying system and method Download PDFInfo
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- CN103742791A CN103742791A CN201310731481.9A CN201310731481A CN103742791A CN 103742791 A CN103742791 A CN 103742791A CN 201310731481 A CN201310731481 A CN 201310731481A CN 103742791 A CN103742791 A CN 103742791A
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Abstract
The invention relates to a converter steel-making sludge pipeline conveying system and method. The system comprises an inclined board settling pond, a sludge pond, a conveying pump, a sludge sintering tank and a spray pump. Waste water obtained through primary wet dedusting of a converter is concentrated into sludge with a concentration of 20%-25% through the inclined board settling pond, flows into the sludge pond, is then conveyed to the sludge sintering tank from the sludge pond via pipes through the conveying pump and is then sprayed into a mixing machine through the spray pump. The converter steel-making sludge pipeline conveying system conveys the sludge with the concentration of 20%-25% and a velocity not lower than 2.5 m/s to a sludge sintering buffer tank from a sludge processing room in a pipe conveying mode, continuously adds the converter sludge into sintering mixed materials in a sintering primary mixing machine through the convey pump and a sludge pump in a spraying mode and replaces production clean water with the sludge to achieve recycling.
Description
Technical field
The invention belongs to steel-smelting sewage sludge and utilize technical field, particularly a kind of converter steeling sludge pipe-line transportation system and delivery method.
Background technique
In convertor steelmaking process, can produce a large amount of flue dust, with 4,000,000 tons of calculating of steel Annual output, adopt flue gas wet purification dedusting, ton steel sludge quantity (dry weight) is 18.55kg/t steel, 7.42 ten thousand tons of annual dewatered sludge amounts.As the concentration by 20% is calculated, mud amount 37.1 × 10
4t/y, average amount 46.84t/h per hour.The mud producing generally adopts pipeline to carry, and because the mode of pipeline conveying material has little investment, cost of transportation is low, and construction speed is fast, take up an area less, be conducive to the advantages such as environmental protection, obtained in recent decades developing rapidly.But this processing mode also produces a lot of problems at pipeline to easily holding road resistance due to slurry, and blocking phenomenon occurs often, simultaneously because converter mud is as offal treatment, has wasted resource.
Summary of the invention
The object of the invention is provides one can make full use of mud and makes pipeline carry converter steeling sludge applied pipeline transportation method more smoothly for solving the technical problem existing in known technology.
The technological scheme that the present invention takes for the technical problem existing in solution known technology is:
A kind of converter mud pipe-line transportation system, comprise inclined-plate clarifying basin, transfer pump, sludge-tank, sintered sludge tank and spray pump, described inclined-plate clarifying basin is connected with sludge-tank by pipeline, described sludge-tank is connected with sintered sludge tank by pipeline, then is connected with sintering primary mixer by spraying tube.
Described spraying tube 2 is arranged at the front half part of cylindrical shell 1, described spraying tube 2 hangs on wire rope 4 by clamp 6, on described spraying tube 2, along mixing machine length direction, be welded with several nozzles 3, the coverage rate spraying mixture from flat burner according to mud is determined injector spacing, the spacing of described nozzle 3 is dwindled gradually, and described nozzle 3 opening ends are pressed into 4mm gap flat.
Described spraying tube 2 terminations arrange blind plate 5.
A kind of converter steeling sludge applied pipeline transportation method, comprises the steps:
(1) bessemerizing the scouring water that contain dust that produce in process reclaims through overhead chute, through coarse particle separator, the large particle in water in dust removal backwater is separated, more tiny particle adds flocculating agent through inclined-plate clarifying basin cooperation and carries out flocculating setting processing, and the mud that the concentration that inclined-plate clarifying basin precipitates is 20%-25% flows into sludge-tank;
(2) transfer pump is extracted the mud in sludge-tank out, then, by pipeline, with the flow velocity that is not less than 2.5m/s, mud is sent in a sintered sludge tank;
(3) mud in sintered sludge tank stirs and is directly sprayed onto on the mixture in sintering primary mixer by spray pump, pipeline, spraying tube nozzle through stirrer, the amount of allocating into of variable frequency pump control mud, the import and export of spray pump and valve etc. locate to be furnished with pressurized air and high pressure water, for block clearing and flushing pipe and equipment.
(4) spray pump will first start fresh water pipeline pump before starting, and starts spray pump after reaching rated pressure.
The tank deck of described sintered sludge tank is provided with radar level gauge.
Described radar level gauge and transfer pump and spray pump interlocking.
It is more than 8 times that described channel bend radius of curvature is pipe diameter.
One section of straight tube is welded out in the elbow of described pipeline, seals up with blind plate.
Also comprise with variable frequency pump interlocking and controlling, flowmeter and pressure gauge for detection of mud with addition of amount.
The invention has the beneficial effects as follows: the present invention adopt pipeline mode of movement by mud from being transported to sintered sludge knock out drum between sludge disposal, and adopt slurry pump in sintering primary mixer in spray mode to sinter mixture continuously with addition of converter mud, substituted produce new water for SINTERING PRODUCTION, recycled.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention:
Fig. 2 is spray pipe structure schematic diagram
In Fig. 2,1. cylindrical shell, 2. spraying tube, 3. nozzle, 4. wire rope, 5. blind plate, 6. clamp.
Embodiment
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Referring to Fig. 1, a kind of converter mud pipe-line transportation system, comprise inclined-plate clarifying basin, transfer pump, sludge-tank, sintered sludge tank, spray pump, inclined-plate clarifying basin is connected with sludge-tank by pipeline, sludge-tank is connected with sintered sludge tank by pipeline, then is connected with sintering primary mixer by spraying tube.
The structure of spraying tube as shown in Figure 2, for sinter mixture is fully mixed with steel-smelting sewage sludge, the front half part of cylindrical shell 1 is provided with spraying tube 2, spraying tube 2 hangs on wire rope 4 by clamp 6, on spraying tube 2, along mixing machine length direction, be welded with several nozzles 3, the coverage rate spraying mixture from flat burner according to mud is determined injector spacing, and the spacing of nozzle 3 is dwindled gradually, nozzle 3 adopts the steel pipe of the long DN20 of 100mm, and one end is pressed into 4mm gap flat.
Spraying tube 2 terminations arrange blind plate 5, for removing nozzle 3 and spraying tube 2 stops up.
The present invention also provides a kind of converter steeling sludge applied pipeline transportation method, comprises the steps:
(1) bessemerizing the scouring water that contain dust that produce in process reclaims through overhead chute, through coarse particle separator, the large particle in water in dust removal backwater is separated, more tiny particle adds flocculating agent through inclined-plate clarifying basin cooperation and carries out flocculating setting processing, and the mud that the concentration that inclined-plate clarifying basin precipitates is 20%-25% flows into sludge-tank.
(2) transfer pump is extracted the mud in sludge-tank out, then, by pipeline, with the flow velocity that is not less than 2.5m/s, mud is sent in sintered sludge tank, and tank deck is equipped with level meter.
(3) mud in sintered sludge tank stirs and is directly sprayed onto on the mixture in sintering primary mixer by spray pump, pipeline, spraying tube nozzle through stirrer, the amount of allocating into of variable frequency pump control mud, the import and export of spray pump and valve etc. locate to be furnished with pressurized air and high pressure water, for block clearing and flushing pipe and equipment.
(4) spray pump will first start fresh water pipeline pump before starting, and can start spray pump after reaching rated pressure.
Detection means of the present invention is complete, and whole manufacturing process is completed by the control of PLC system, and interlocks with existing production control system.
The present invention's pipeline used is avoided " U " font design, and it is more than 8 times that elbow radius of curvature is pipe diameter.
In the elbow of pipeline, weld out one section of straight tube, seal up with blind plate.When line clogging, open water and gas flushing.
The present invention adopts radar level gauge to detect sludge tank liquid level, with transfer pump and spray pump interlocking, prevents that tank boil-overs or pump sky from taking out.Flowmeter and pressure gauge with addition of amount, carry out manufacture control with variable frequency pump interlocking for detection of mud.
The present invention adopt pipeline mode of movement by mud from being transported to sintered sludge knock out drum between sludge disposal, and adopt slurry pump in sintering primary mixer in spray mode to sinter mixture continuously with addition of converter mud, substituted produce new water for SINTERING PRODUCTION, recycled.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, can also make a lot of forms, within these all belong to protection scope of the present invention.
Claims (10)
1. a converter mud pipe-line transportation system, it is characterized in that, comprise inclined-plate clarifying basin, transfer pump, sludge-tank, sintered sludge tank and spray pump, described inclined-plate clarifying basin is connected with sludge-tank by pipeline, described sludge-tank is connected with sintered sludge tank by pipeline, then is connected with sintering primary mixer by spraying tube.
2. converter mud pipe-line transportation system according to claim 1, it is characterized in that, described spraying tube (2) is arranged at the front half part of cylindrical shell (1), described spraying tube (2) hangs on wire rope (4) by clamp (6), described spraying tube (2) is upper is welded with several nozzles (3) along mixing machine length direction, the coverage rate spraying mixture from flat burner according to mud is determined injector spacing, the spacing of described nozzle (3) is dwindled gradually, and described nozzle (3) opening end is pressed into 4mm gap flat.
3. converter mud pipe-line transportation system according to claim 2, is characterized in that, described spraying tube (2) termination arranges blind plate (5).
4. a converter steeling sludge applied pipeline transportation method, is characterized in that, comprises the steps:
(1) bessemerizing the scouring water that contain dust that produce in process reclaims through overhead chute, through coarse particle separator, the large particle in water in dust removal backwater is separated, more tiny particle adds flocculating agent through inclined-plate clarifying basin cooperation and carries out flocculating setting processing, and the mud that the concentration that inclined-plate clarifying basin precipitates is 20%-25% flows into sludge-tank;
(2) transfer pump is extracted the mud in sludge-tank out, then, by pipeline, with the flow velocity that is not less than 2.5m/s, mud is sent in sintered sludge tank;
(3) mud in sintered sludge tank stirs and is directly sprayed onto on the mixture in sintering primary mixer by spray pump, pipeline, spraying tube nozzle through stirrer, the amount of allocating into of variable frequency pump control mud, the import and export of spray pump and valve etc. locate to be furnished with pressurized air and high pressure water, for block clearing and flushing pipe and equipment.
5. converter steeling sludge applied pipeline transportation method according to claim 4, is characterized in that, described spray pump will first start fresh water pipeline pump before starting, and starts spray pump after reaching rated pressure.
6. converter steeling sludge applied pipeline transportation method according to claim 4, is characterized in that, the tank deck of described sintered sludge tank is provided with radar level gauge.
7. converter steeling sludge applied pipeline transportation method according to claim 4, is characterized in that, described radar level gauge and transfer pump and spray pump interlocking.
8. converter steeling sludge applied pipeline transportation method according to claim 4, is characterized in that, it is more than 8 times that described channel bend radius of curvature is pipe diameter.
9. converter steeling sludge applied pipeline transportation method according to claim 4, is characterized in that, one section of straight tube is welded out in the elbow of described pipeline, seals up with blind plate.
10. converter steeling sludge applied pipeline transportation method according to claim 4, is characterized in that, also comprises with variable frequency pump interlocking and controlling, flowmeter and pressure gauge for detection of mud with addition of amount.
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| CN201310731481.9A CN103742791A (en) | 2013-12-20 | 2013-12-20 | Converter steel-making sludge pipeline conveying system and method |
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| CN201310731481.9A CN103742791A (en) | 2013-12-20 | 2013-12-20 | Converter steel-making sludge pipeline conveying system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276376A (en) * | 2015-11-20 | 2016-01-27 | 湖南省湘衡盐化有限责任公司 | Device and method eliminating pipeline vibration |
| CN106396332A (en) * | 2016-09-14 | 2017-02-15 | 李界文 | Reverse-thrust-throwing sludge drier device and operation and use method thereof |
| CN107012319A (en) * | 2017-05-12 | 2017-08-04 | 山东钢铁股份有限公司 | One kind is used to sinter digestion steel-smelting sewage sludge system and method |
| CN109809192A (en) * | 2018-12-10 | 2019-05-28 | 北京矿冶科技集团有限公司 | A kind of tailings paste pipe-line transportation system and method |
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2013
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276376A (en) * | 2015-11-20 | 2016-01-27 | 湖南省湘衡盐化有限责任公司 | Device and method eliminating pipeline vibration |
| CN106396332A (en) * | 2016-09-14 | 2017-02-15 | 李界文 | Reverse-thrust-throwing sludge drier device and operation and use method thereof |
| CN107012319A (en) * | 2017-05-12 | 2017-08-04 | 山东钢铁股份有限公司 | One kind is used to sinter digestion steel-smelting sewage sludge system and method |
| CN109809192A (en) * | 2018-12-10 | 2019-05-28 | 北京矿冶科技集团有限公司 | A kind of tailings paste pipe-line transportation system and method |
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