CN213375517U - Blast furnace flue gas circulation dust collector - Google Patents
Blast furnace flue gas circulation dust collector Download PDFInfo
- Publication number
- CN213375517U CN213375517U CN202021814564.6U CN202021814564U CN213375517U CN 213375517 U CN213375517 U CN 213375517U CN 202021814564 U CN202021814564 U CN 202021814564U CN 213375517 U CN213375517 U CN 213375517U
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- flue gas
- dust
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- inlet
- circulating
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- 239000000428 dust Substances 0.000 title claims abstract description 101
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 239000003546 flue gas Substances 0.000 title claims abstract description 78
- 239000007789 gas Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 abstract description 11
- 239000000779 smoke Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 230000009471 action Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001314 paroxysmal effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Blast Furnaces (AREA)
Abstract
The utility model discloses a blast furnace flue gas circulation dust collector, including clean room, vortex separator one, vortex separator two, circulation flue gas pipeline one, circulation flue gas pipeline two, gas outlet one, gas outlet two, flue gas entry, support frame, sealed cowling, conveyor belt, dust outlet one, dust outlet two, induced fan, guide plate. The induced fan and the guide plate are both arranged in the dust removing chamber; an outlet A and an inlet B are arranged on the first circulating flue gas pipeline; an outlet C and an inlet D are arranged on the circulating flue gas pipeline II; the vortex separators are arranged at two sides of the bottom of the dust removing chamber. Flue gas generated by blast furnace ironmaking enters a dust removal chamber, large dust particles are formed by circulating collision and adhesion and settled, dust is removed by a vortex separator, and dust which is not settled is subjected to circulating dust removal again. The utility model discloses can the efficient carry out the elementary dust removal in the blast furnace flue gas dust removal link, reduce follow-up dust collector's setting, its simple structure avoids complicated pipeline to arrange, reduces the fault point.
Description
Technical Field
The utility model relates to an industrial dedusting technical field, concretely relates to blast furnace flue gas circulation dust collector.
Background
Blast furnace ironmaking is an important link in steel production. In the process of making iron in a blast furnace, raw materials such as iron ore, sintered ore, coke, limestone and the like are continuously charged from the top of the blast furnace, and hot air is blown from the lower part of the blast furnace for combustion. At high temperatures, the coke and the carbon monoxide produced by its combustion reduce iron from iron ore, and a large amount of smoke is produced in the process, which is a major source of pollution in iron works. According to the relevant measurement, about 2.5kg of smoke is emitted per 1 ton of pig iron. More than 66% of the smoke dust has the particle size less than 10 mu m, can be suspended in the air for a long time, and has extremely serious harm to human bodies. Since the tapping floor is operated intermittently, most of the fumes diffuse outward at the beginning of tapping, so that the tapping is paroxysmal, which also causes considerable difficulty in trapping the fumes. At present, the purification of the front flue gas of a small-sized blast furnace is mainly carried out by a cloth bag, and an electrostatic dust collector is only used in newly built blast furnaces of a few large-sized steel mills.
At present, a blast furnace dust removal device is divided into a plurality of stages which are connected in parallel or in series for carrying out dust removal in sequence, generally, an inertia dust removal device or a gravity dust removal device is used as primary dust removal, and then, a cloth bag dust removal device or an electrostatic dust removal device is connected in series in sequence for secondary dust removal, tertiary dust removal and the like until the smoke dust in the smoke gas is controlled to be in the emission standard allowed by an industrial operation field. Under the lower condition of elementary dust collection efficiency, then need arrange more follow-up dust collector, this will make the dust removal cost increase to too much setting up dust collector can lead to the pipeline between each dust collector to set up complicacy, occupy more work place, still increased the fault point scheduling problem in the production process.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made in order to provide a solution that overcomes or at least partially solves the above problems. An object of the utility model is to provide a blast furnace gas circulation dust collector, its principle that utilizes little power self-loopa makes it can the efficient carry out the elementary dust removal in the blast furnace gas dust removal link, can the follow-up dust collector's of effectual reduction setting to reduce cost, and can avoid complicated pipe arrangement, reduce the fault point of flue gas dust removal in-process.
The technical scheme of the utility model as follows:
a blast furnace flue gas circulating dust removal device comprises a dust removal chamber, a first vortex separator, a second vortex separator, a first circulating flue gas pipeline, a second circulating flue gas pipeline, a first gas outlet, a second gas outlet, a flue gas inlet, a support frame, a sealing cover, a conveying belt, a first dust outlet, a second dust outlet, a guide fan and a guide plate. The induced fan and the guide plate are arranged in the dust removing chamber; an inlet B and an outlet A are arranged on the first circulating flue gas pipeline; an inlet D and an outlet C are arranged on the circulating flue gas pipeline II; the induced fan is arranged in the dust removing chamber and is positioned above the inlet B and the inlet D and below the outlet A and the outlet C, so that smoke can be better conveyed to the inlet B and the inlet D of the first circulating smoke pipeline and the second circulating smoke pipeline. The guide plate is arranged under the induced fan, specifically is arranged at a position slightly lower than an inlet B of the first circulating flue gas pipeline and an inlet D of the second circulating flue gas pipeline in the vertical direction, and can guide a large amount of flue gas into the circulating flue gas pipeline; the vortex separator I and the vortex separator are symmetrically arranged at the bottom of the dust removal chamber, and can separate large particle dust and gas after collision, so that flue gas purification is realized; the conveying belt is arranged right below the first dust outlet and the second dust outlet so as to convey the processed dust to a specified dust collecting position; the sealing cover is arranged on the conveying belt, so that the environmental pollution caused by the overflow of dust can be effectively avoided; the support frame is arranged on the sealing cover and is mainly used for supporting the dust removal device.
Flue gas generated in blast furnace ironmaking enters a dust removal chamber through a flue gas inlet, the flue gas flows downwards at an accelerated speed under the action of an induced fan, airflow is induced by a guide plate, a large amount of flue gas can enter circulating flue gas pipelines on two sides through an inlet B of a circulating flue gas pipeline I and an inlet D of a circulating flue gas pipeline II, the flue gas is discharged into the dust removal chamber through an outlet A of the circulating flue gas pipeline I and an outlet C of the circulating flue gas pipeline II, the discharged flue gas collides with the flue gas entering from the flue gas inlet, and small-particle smoke dust is bonded to form larger dust particles after being collided and settled under the action of gravity, and falls to two sides of the bottom of the dust removal chamber through the guide plate, specifically to the inlet of a vortex; the dust obtained after the cyclone separator processes the smoke containing large particles is discharged through the dust outlet I and the dust outlet II, directly falls onto the conveying belt, and is conveyed to a specified dust collecting position under the action of the conveying belt; and the separated gas is discharged into the next-stage dust removing equipment through the first gas outlet and the second gas outlet. Meanwhile, the flue gas containing small particles enters the circulating flue gas pipeline through the first circulating flue gas pipeline inlet B and the second circulating flue gas pipeline inlet D under the action of the guide plate, and circulating dust removal is carried out again.
Compared with the prior art, the invention has the following advantages:
firstly, the utility model relates to a blast furnace flue gas circulation dust collector, it is mainly applicable to the elementary dust removal in the blast furnace flue gas dust removal process. Compared with the prior blast furnace flue gas primary dust removal device, the device has the advantages of simple and compact structure, light weight, lower cost and convenient operation; the principle of micro-power self-circulation is utilized to enable the primary dust removal in the dust removal link of the blast furnace flue gas to be efficiently carried out, and the setting of a subsequent dust removal device can be effectively reduced, so that the cost is reduced, the complex pipeline arrangement can be avoided, and the fault points in the dust removal process of the flue gas are reduced.
Secondly, the utility model discloses be provided with the sealed cowling on conveyor belt, can effectually avoid a dirt mouth one, two exhaust dust overflows of a dirt mouth, cause environmental pollution.
Third, the utility model discloses simple structure, integrate the height, it is all more convenient to maintain and change.
Drawings
FIG. 1 is a schematic view of the overall structure of a blast furnace flue gas circulation dust removal device of the present invention;
FIG. 2 is a schematic view of the internal structure of a dust chamber of the blast furnace flue gas circulation dust removal device of the present invention;
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1 to 2, a blast furnace flue gas circulation dust collector, including clean room 1, vortex separator 2.1, vortex separator two 2.1, circulation flue gas pipeline one 3.2, circulation flue gas pipeline two 3.2, gas outlet one 4.1, gas outlet two 4.2, flue gas entry 5, support frame 6, sealed cowling 7, conveyor belt 8, a dust outlet one 9.1, a dust outlet two 9.2, induced air fan 10, guide plate 11. The induced draft fan 10 and the guide plate 11 are both arranged in the dust chamber 1; an inlet B and an outlet A are arranged on the first circulating flue gas pipeline 3.1; an inlet D and an outlet C are arranged on the second circulating flue gas pipeline 3.2; the first vortex separator 2.1 and the second vortex separator 2.2 are respectively arranged on two sides of the bottom of the dust removal chamber; the conveying belt 8 is arranged right below the first dust outlet 9.1 and the second dust outlet 9.2; a sealing cover 7 is arranged on the conveying belt 8; the support frame 6 is arranged on the sealing cover 7.
Flue gas generated in blast furnace ironmaking enters a dust chamber 1 through a flue gas inlet 5, the flue gas flows downwards and is accelerated under the action of an induced draft fan 10, and then is induced to flow by a guide plate 11, so that a large amount of flue gas can enter circulating flue gas pipelines on two sides through an inlet B of a circulating flue gas pipeline I3.1 and an inlet D of a circulating flue gas pipeline II 3.2, and is discharged into the dust chamber 1 through an outlet A of the circulating flue gas pipeline I3.1 and an outlet C of the circulating flue gas pipeline II 3.2, the discharged flue gas collides with the flue gas entering from the flue gas inlet 5, and a plurality of small-particle smoke dust is bonded to form larger particles after being collided, is settled under the action of gravity, and falls to two sides of the bottom of the dust chamber 1 through the guide plate 11, specifically to an inlet; the dust obtained after the cyclone separator processes the flue gas containing large particles is discharged through a first dust outlet 9.1 and a second dust outlet 9.2, directly falls onto a conveying belt 8, and is conveyed to a specified dust collecting position under the action of the conveying belt 8; and the separated gas is discharged into the next-stage dust removing equipment through the first gas outlet 4.1 and the second gas outlet 4.2. Meanwhile, the flue gas containing small particles enters the circulating flue gas pipeline through the first circulating flue gas pipeline 3.1 inlet B and the second circulating flue gas pipeline 3.2 inlet D under the action of the guide plate 11, and then circulating dust removal is carried out again.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and it should be noted that the scope of the present invention is not limited, and any modifications, equivalent substitutions, improvements, etc. made by the technical solution of the present invention by those skilled in the art without departing from the design spirit of the present invention should be included in the protection scope defined by the claims of the present invention.
Claims (1)
1. The utility model provides a blast furnace gas circulation dust collector, characterized by: the device comprises a dust removing chamber, a first vortex separator, a second vortex separator, a first circulating flue gas pipeline, a second circulating flue gas pipeline, a first air outlet, a second air outlet, a flue gas inlet, a support frame, a sealing cover, a conveying belt, a first dust outlet, a second dust outlet, a induced fan and a guide plate; the induced fan and the guide plate are arranged in the dust removing chamber; an inlet B and an outlet A are arranged on the first circulating flue gas pipeline; an inlet D and an outlet C are arranged on the circulating flue gas pipeline II; the induced fans are arranged in the dust removing chamber and are positioned above the inlet B and the inlet D and below the outlet A and the outlet C; the guide plate is arranged right below the induced fan, and is specifically arranged at a position slightly lower than an inlet B of the first circulating flue gas pipeline and an inlet D of the second circulating flue gas pipeline in the vertical direction; the vortex separator I and the vortex separator are symmetrically arranged on two sides of the bottom of the dust removing chamber; the conveying belt is arranged right below the first dust outlet and the second dust outlet; the conveying belt is provided with the sealing cover; the support frame is arranged on the sealing cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021814564.6U CN213375517U (en) | 2020-08-27 | 2020-08-27 | Blast furnace flue gas circulation dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021814564.6U CN213375517U (en) | 2020-08-27 | 2020-08-27 | Blast furnace flue gas circulation dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213375517U true CN213375517U (en) | 2021-06-08 |
Family
ID=76212951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021814564.6U Active CN213375517U (en) | 2020-08-27 | 2020-08-27 | Blast furnace flue gas circulation dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213375517U (en) |
-
2020
- 2020-08-27 CN CN202021814564.6U patent/CN213375517U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231212 Address after: 710000, Room 604, 6th Floor, Block B, Zhonggang International, Wenjing Road, Economic Development Zone, Xi'an City, Shaanxi Province Patentee after: Shaanxi Yuteng energy and Environmental Protection Technology Co.,Ltd. Address before: 066004 No. 438, Hebei Avenue, seaport District, Hebei, Qinhuangdao Patentee before: Yanshan University |
|
| TR01 | Transfer of patent right |