CN217459480U - Totally closed type micro negative pressure dust removal system for blast furnace feeding - Google Patents
Totally closed type micro negative pressure dust removal system for blast furnace feeding Download PDFInfo
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- CN217459480U CN217459480U CN202220152600.XU CN202220152600U CN217459480U CN 217459480 U CN217459480 U CN 217459480U CN 202220152600 U CN202220152600 U CN 202220152600U CN 217459480 U CN217459480 U CN 217459480U
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Abstract
The utility model provides a totally enclosed micro negative pressure dust removal system for blast furnace feeding, which comprises a dust collection component for extracting dust from preset blast furnace dust lifting points; the dust removal component is used for filtering and removing dust from the obtained dust to obtain secondary dust used as a blast furnace raw material and exhaust gas; the exhaust assembly is used for discharging the exhaust gas to an external space after the exhaust gas is pretreated; the power assembly is used for providing power for conveying the dust collected by the dust collection assembly to the dust removal assembly; the dust collecting component comprises a plurality of dust removing points, a plurality of dust removing covers and a plurality of valves. The utility model discloses reduce the amount of wind and the dust removal wind speed of removing dust more than 50% for the impartial volume of sack cleaner filter area, motor power reduces, and effectual reduction engineering investment, area, working costs also make the withstand voltage level of equipment reduce simultaneously, and motor power reduces, reduces the wearing and tearing of the big dust removal wind of dust removal wind speed to the pipeline, alleviates the running cost.
Description
Technical Field
The utility model relates to a blast furnace dust removal field specifically is a totally closed formula micro negative pressure dust pelletizing system is used to blast furnace feed.
Background
The blast furnace is a facility for reducing iron ore to molten iron by supplying coke. About 1.7 tons of raw materials (sintered ore, pellet ore, lump ore, etc.) and 0.5 ton of coke are required for each 1 ton of molten iron. These materials are transported from the respective production sites to the blast furnace, stored, screened, belt-transported and finally sent to the top of the blast furnace. The distance of the material transportation, screening and transportation is about 500m to 1000m only in the blast furnace area, and the blast furnace is lifted by about 70m to 150 m.
Therefore, a large amount of dust is generated in the processes of material storage, dumping, screening and transportation.
In the prior production dust removal, a dust removal cover is arranged at each dust lifting point, and the dust at the dust lifting points is extracted and filtered through the dust removal cover, a dust removal branch pipe, a dust removal valve, a dust removal main pipe and the like. The filtered dust is used as a raw material, and the filtered gas is discharged to the atmosphere at high altitude.
In practical application, about 50 dust removing points are fed into a blast furnace, and the used dust removing air quantity is about 550Nm 3 /m 3 The furnace volume and the flow rate of the dedusting air are selected according to 15 m/s.
Along with the increasing environmental requirements and dust removal discharge standards, the defects that the dust removal area of a cloth bag is larger and larger due to the larger and larger dust removal air quantity generally exist in the existing products. Resulting in great waste of sites, ventilation pipelines, valves, electricity and other problems.
In view of the above, the invention is urgently needed to design a totally-enclosed micro negative pressure dust removal system for blast furnace feeding.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects existing in the prior art, the utility model aims to provide a totally-enclosed micro-negative pressure dust removal system for blast furnace feeding, which can remove dust with about 550Nm of dust removal air volume 3 /m 3 The furnace volume is reduced to 200Nm 3 /m 3 A furnace volume; reducing the flow speed of the dedusting air to 5m/s from 15 m/s; the negative pressure 5000Pa of the fan is reduced to 2000Pa, so that the problems in the background technology are solved, and the problems in the prior art are solved.
In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a blast furnace feed is with little negative pressure dust pelletizing system of totally closed formula, includes:
the dust collection assembly is used for extracting dust from a preset blast furnace dust raising point;
the dust removal component is used for filtering and removing dust from the obtained dust to obtain secondary dust used as the blast furnace raw material and exhaust gas;
the discharge assembly is used for discharging the pretreated discharge gas to an external space;
the power assembly is used for providing power for conveying the dust collected by the dust collection assembly to the dust removal assembly and providing power for discharging the exhaust gas to an external space;
the dust collecting component comprises a plurality of dust removing points, a plurality of dust removing covers and a plurality of valves, wherein,
singly the dust excluding hood internal stability is equipped with a plurality ofly the dust removal point, just dust excluding hood quantity and dust removal point are direct proportion function relation, the dust excluding hood keep away from with a tip fixed mounting that the dust removal point is connected has a valve for realize the totally closed amalgamation of dust removal point department dust and handle, improve the production management and control.
As an improvement of the totally enclosed micro negative pressure dust removing system for feeding the blast furnace in the utility model, the dust removing component comprises an environmental bag dust remover and a first pipeline, wherein,
the environment bag-type dust collector is connected with the valve through the first pipeline and used for preprocessing the dust under the power support of the power assembly, so that the discharge of the dust in an external space is reduced, and meanwhile, the utilization rate of the blast furnace raw material is improved by recovering solid materials;
an end of the environment bag-type dust collector is provided with an ash outlet, and the ash outlet is arranged in a mode of being arranged along the end of the geometric center of the environment bag-type dust collector below the gravity direction.
As an improvement of the totally-enclosed micro negative pressure dust removal system for blast furnace feeding in the utility model, the power component comprises a fan and a second pipeline, wherein,
the fan receives an instruction of a peripheral controller, is connected with the environmental bag-type dust collector through the second pipeline, and sets the dust removing air quantity and the dust removing air speed when dust is adsorbed to the environmental bag-type dust collector, so that the abrasion of the dust removing air speed to the first pipeline and the second pipeline is reduced, and the pressure-resistant grade of equipment is improved.
As an improvement of the totally-enclosed micro negative pressure dust removal system for blast furnace feeding in the utility model, the discharge assembly comprises a chimney and a third pipeline, wherein,
the chimney is fixedly connected to one end of the third pipeline, and the other end of the third pipeline is connected to the fan and used for discharging the exhaust gas to an external space under the action of the fan.
The utility model provides an among the possible implementation of blast furnace feed is with totally closed formula little negative pressure dust pelletizing system, the dust removal amount of wind when the dust of settlement adsorbs to the environmental sack cleaner is 200Nm 3 /m 3 A furnace volume;
the set dust removing air speed when the dust is adsorbed to the environment bag-type dust remover is 5m/s, and the dust removing air speed is used for reducing the filtering area of the environment bag-type dust remover and reducing the dust generation amount during dust removal.
As right the utility model discloses in a blast furnace feed is with totally closed little negative pressure dust pelletizing system's of formula improvement, the fan will discharge the work negative pressure when gaseous emission to the peripheral hardware space is 2000Pa for reduce the fan filtration degree, with the atmospheric discharge volume of reducing the gaseous to the peripheral hardware space of removing dust.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model is different from the prior art, the dust removal air quantity and the dust removal air speed are respectively reduced by more than 50 percent, so that the filtering area of the bag-type dust remover and the equal amount of the motor power are reduced, the engineering investment, the occupied area and the operating cost are effectively reduced, the pressure-resistant grade of the equipment is reduced, the motor power is reduced, the abrasion of the dust removal air speed to the pipeline is greatly reduced, and the operating cost is relieved;
2. and simultaneously, the utility model discloses a carry out totally closed, the back that merges with dust removal point and dust excluding hood, greatly reduce dust removal pipeline, valve quantity, reduced the engineering investment to possess the advantage of simplifying the production management and control.
Drawings
The disclosure of the present invention is explained with reference to the drawings. It is to be understood that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the invention, for which reference should be made to the appended drawings in which like elements are designated by like reference numerals. Wherein:
FIG. 1 is a schematic view of the overall structure of a totally enclosed micro negative pressure dust removal system for blast furnace feeding according to an embodiment of the present invention;
fig. 2 is a schematic view of an overall structure of a conventional product according to an embodiment of the present invention.
The notation in the figure is:
1-valve, 2-dust hood, 3-dust removing point, 4-first pipeline, 5-environment bag-type dust remover, 6-ash outlet, 7-second pipeline, 8-fan, 9-chimney and 10-third pipeline.
Detailed Description
It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structural modes and implementation modes can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.
As shown in fig. 1-2, as an embodiment of the present invention, the present invention provides a technical solution: the utility model provides a blast furnace feed is with little negative pressure dust pelletizing system of totally closed formula, includes:
the dust collection assembly is used for extracting dust from a preset blast furnace dust raising point; it is understood that the dust collecting assembly comprises a plurality of dust removing points 3, a plurality of dust removing covers 2 and a plurality of valves 1,
a plurality of dust removing points 3 are fixedly arranged in a single dust removing cover 2, the number of the dust removing covers 2 and the dust removing points 3 are in a direct proportion function relationship, and a valve 1 is fixedly arranged at one end part, far away from the end part connected with the dust removing points 3, of the dust removing cover 2 and used for realizing totally-closed combined treatment of dust at the dust removing points 3 and improving production management and control;
it should be noted that, in an embodiment of the present invention, the valve 1 is fixedly connected with the dust hood 2 at the outlet thereof, at this time, compared with the existing product, the present invention provides a dust hood 2 with a plurality of dust removing points 3 added therein, the number of the dust removing points 3 is preferably 20, and secondly, the plurality of dust removing points 3 are integrated in one dust hood 2, and the single dust hood 2 is also connected with the single valve 1, and after the dust removing points 3 are fully sealed and combined, the air volume and the air speed are reduced by more than 50%, so as to reduce the number of the dust removing pipes and the valves 1, reduce the engineering investment, and simplify the production management and control;
based on above-mentioned technical concept, for further simplifying production management and control flow, the utility model provides a valve 1 can be solenoid valve, through the peripheral hardware controller, adds the chronogenesis instruction, the state of opening and shutting of control flap 1 that can be periodic.
The dust removal component is used for filtering and removing dust from the obtained dust to obtain secondary dust used as a blast furnace raw material and exhaust gas; it should be noted that the dust removal assembly comprises an environmental bag-type dust remover 5 and a first pipeline 4, the environmental bag-type dust remover 5 is connected with the valve 1 through the first pipeline 4 and is used for preprocessing dust under the power support of the power assembly, so that the discharge of the dust in an external space is reduced, and meanwhile, the utilization rate of the blast furnace raw material is improved by recovering solid materials; simultaneously, 5 tip of environment sack cleaner are equipped with ash hole 6, and ash hole 6 sets up with the mode of the tip in gravity direction below along 5 geometric centre of environment sack cleaner, is convenient for go out the ash fast, prevents that the dust after handling from bonding at environment sack cleaner 5, influences the filtration dust removal of environment sack cleaner 5.
The exhaust assembly is used for discharging the exhaust gas to an external space after the exhaust gas is pretreated; it should be noted that the discharge assembly includes a chimney 9 and a third pipeline 10, the chimney 9 is fixedly connected to one end of the third pipeline 10, and the other end of the third pipeline 10 is connected to the fan 8, and is used for discharging the exhaust gas to the peripheral space under the action of the fan 8, so as to facilitate the unified management and control of the workers, and in the specific implementation, the fan 8 and the valve 1 can be uniformly controlled by a peripheral controller.
The power assembly is used for providing power for conveying the dust collected by the dust collection assembly to the dust removal assembly and providing power for discharging the exhaust gas to the peripheral space; it should be noted that, power component includes fan 8 and second pipeline 7, and peripheral hardware controller instruction is received to fan 8, is connected with environment sack cleaner 5 through second pipeline 7, with dust removal amount of wind and the dust removal wind speed when setting for the dust and adsorbing to environment sack cleaner 5, with the wearing and tearing of reduction dust removal wind speed to first pipeline 4 and second pipeline 7, improve equipment's withstand voltage level, can understand, compare in current product, the utility model discloses reduce the dust removal amount of wind more than 50% and through reducing the dust removal wind speed more than 50%, promptly, the dust removal amount of wind when the dust of settlement adsorbs to environment sack cleaner 5 is 200Nm 3 /m 3 The furnace volume, the dust removal wind speed when the dust that sets for adsorbs to environment sack cleaner 5 is 5m/s for the filter area of environment sack cleaner 5, the equal volume of motor power reduce, effectual reduction engineering investment, area, the working costs.
For reducing fan 8's filtration degree to reduce the atmospheric emission of dust removal gas to the peripheral hardware space, in the utility model discloses an embodiment, fan 8 is 2000Pa at the work negative pressure when discharging exhaust gas to the peripheral hardware space.
The technical scope of the present invention is not limited to the content in the above description, and those skilled in the art can make various modifications and alterations to the above embodiments without departing from the technical spirit of the present invention, and these modifications and alterations should fall within the protection scope of the present invention.
Claims (4)
1. The utility model provides a blast furnace feed is with totally closed little negative pressure dust pelletizing system which characterized in that: the method comprises the following steps:
the dust collection assembly is used for extracting dust from a preset blast furnace dust raising point;
the dust removal component is used for filtering and removing dust from the obtained dust to obtain secondary dust used as a blast furnace raw material and exhaust gas;
the discharge assembly is used for discharging the discharge gas to an external space after the discharge gas is pretreated;
the power assembly is used for providing power for conveying the dust collected by the dust collection assembly to the dust removal assembly and providing power for discharging the exhaust gas to an external space;
the dust collecting component comprises a plurality of dust removing points, a plurality of dust removing covers and a plurality of valves, wherein,
singly the dust excluding hood internal stability is equipped with a plurality ofly the dust removal point, just dust excluding hood quantity and dust removal point are direct proportion function relation, the dust excluding hood keep away from with a tip fixed mounting that the dust removal point is connected has a valve for realize the totally closed amalgamation of dust removal point department dust and handle, improve the production management and control.
2. The fully-closed micro-negative pressure dedusting system for blast furnace feeding according to claim 1, is characterized in that: the dust removal assembly comprises an environmental bag dust remover and a first pipeline, wherein,
the environment bag-type dust collector is connected with the valve through the first pipeline and used for preprocessing the dust under the power support of the power assembly, so that the discharge of the dust in a peripheral space is reduced, and meanwhile, the utilization rate of the raw materials of the blast furnace is improved by recovering solid materials;
an ash outlet is formed in one end of the environment bag-type dust collector, and the ash outlet is formed in the end of the environment bag-type dust collector below the gravity direction along the geometric center of the environment bag-type dust collector.
3. The fully-closed micro-negative pressure dedusting system for blast furnace feeding according to claim 2, is characterized in that: the power assembly comprises a fan and a second pipeline, wherein,
the fan receives an instruction of a peripheral controller, is connected with the environmental bag-type dust collector through the second pipeline, and sets the dust removing air quantity and the dust removing air speed when dust is adsorbed to the environmental bag-type dust collector, so that the abrasion of the dust removing air speed to the first pipeline and the second pipeline is reduced, and the pressure-resistant grade of equipment is improved.
4. The fully-closed micro-negative pressure dust removal system for the blast furnace feeding according to claim 1, which is characterized in that: the exhaust assembly includes a stack and a third duct, wherein,
the chimney is fixedly connected to one end of the third pipeline, and the other end of the third pipeline is connected to the fan and used for discharging the exhaust gas to an external space under the action of the fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220152600.XU CN217459480U (en) | 2022-01-20 | 2022-01-20 | Totally closed type micro negative pressure dust removal system for blast furnace feeding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220152600.XU CN217459480U (en) | 2022-01-20 | 2022-01-20 | Totally closed type micro negative pressure dust removal system for blast furnace feeding |
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| CN217459480U true CN217459480U (en) | 2022-09-20 |
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| CN202220152600.XU Active CN217459480U (en) | 2022-01-20 | 2022-01-20 | Totally closed type micro negative pressure dust removal system for blast furnace feeding |
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