CN211513869U - Blast furnace gas dust removal dehydration tower - Google Patents
Blast furnace gas dust removal dehydration tower Download PDFInfo
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- CN211513869U CN211513869U CN201922300852.3U CN201922300852U CN211513869U CN 211513869 U CN211513869 U CN 211513869U CN 201922300852 U CN201922300852 U CN 201922300852U CN 211513869 U CN211513869 U CN 211513869U
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Abstract
The utility model relates to a blast furnace gas dust removal dehydration tower, include the tower body, establish in the ponding district of tower body bottom, its one end stretch into the admission line in the ponding district of tower body inside, establish the cold water pipeline layer that is located the top in ponding district in the tower body, establish in the tower body and be located the top dehydrator on cold water pipeline layer and establish the exhaust duct at the tower body top. The utility model discloses the mode that utilizes water bath dust removal removes dust to blast furnace gas, then dewaters the blast furnace gas through the water bath, has advantages such as area is little and dust collection efficiency height.
Description
Technical Field
The utility model relates to a technical field that blast furnace gas handled especially relates to a blast furnace gas dust removal dehydration tower.
Background
The blast furnace gas is a byproduct generated in the iron-making process, and mainly comprises CO, CO2, N2, H2, CH4 and the like, wherein the content of combustible CO is about 25 percent. The components and the calorific value of blast furnace gas are related to the fuel used by the blast furnace, the variety of the pig iron and the smelting process, modern iron-making production generally adopts the production processes of large volume, high air temperature, high smelting intensity and high coal powder injection amount, the advanced production processes improve the labor productivity and reduce the energy consumption, but the calorific value of the produced blast furnace gas is lower, and the utilization difficulty is increased, so that the blast furnace gas is mostly used by enterprises.
Aiming at dust in blast furnace gas, the main dust removal modes at present comprise bag dust removal, dry electrostatic dust removal, cyclone dust removal and the like, the equipment used in the dust removal modes is large in size and needs slower air flow rate, so that in the actual use process, large-size dust removal equipment is needed to ensure the dust removal effect, and the occupied area of purification equipment is larger and larger.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a blast furnace gas dedusting and dehydrating tower which can remove dust from blast furnace gas in limited occupied space.
The above object of the present invention can be achieved by the following technical solutions:
a blast furnace gas dust removal dehydration tower comprising:
a tower body;
the water accumulation area is arranged at the bottom of the tower body;
one end of the air inlet pipeline extends into a water accumulation area inside the tower body;
the cold water pipeline layer is arranged in the tower body and is positioned above the water accumulation area;
the dehydrator is arranged in the tower body and positioned above the cold water pipeline layer; and
and the exhaust pipeline is arranged at the top of the tower body.
By adopting the technical scheme, the blast furnace gas enters the water accumulation area in the tower body through the gas inlet pipeline, flows from bottom to top after contacting, sequentially passes through the super-cooling water pipeline layer and the dehydrator, and is finally discharged from the exhaust pipeline. When the blast furnace gas enters the water accumulation area, dust contained in the blast furnace gas is remained in water in the water accumulation area, the dust amount in the blast furnace gas is reduced, the water vapor content is increased, the blast furnace gas is condensed when passing through the super-cooling water pipeline layer and the dehydrator, and the water vapor in the blast furnace gas is rapidly reduced. Under the dust removal mode, dust removal and dehydration are finished in the tower body, and the utilization rate of the space can be improved.
The utility model discloses further set up to: the dust remover is connected with one end of the air inlet pipeline positioned outside the tower body.
Through adopting above-mentioned technical scheme, the dust remover is located tower body the place ahead, belongs to leading filter, can carry out once filtering to blast furnace gas, reduces the dust volume that enters into in the tower body.
The utility model discloses further set up to: the dust remover is a cyclone dust remover.
Through adopting above-mentioned technical scheme, cyclone removes the dust in the blast furnace gas with centrifugal force, can get rid of the large granule dust in the blast furnace gas, further reduces the dust volume that enters into in the tower body.
The utility model discloses further set up to: a partition plate is arranged on the inner wall of the tower body, and air holes are uniformly distributed on the partition plate;
the baffle is positioned in the water accumulation area, and one end of the air inlet pipeline positioned in the tower body penetrates through the baffle from top to bottom.
Through adopting above-mentioned technical scheme, blast furnace gas forms the bubble after from the admission line blowout, strikes on the baffle, then passes from the gas pocket on the baffle, passes the in-process of gas pocket, can form a large amount of small bubbles, and the area of contact with the water in the ponding district is bigger, and dust removal effect is also better.
The utility model discloses further set up to: the plurality of the partition plates are arranged on the inner wall of the tower body at intervals from bottom to top;
in the direction from bottom to top, the diameter of the pores in the separator tends to decrease.
By adopting the technical scheme, a large amount of small bubbles can be formed in the process that the blast furnace gas sequentially passes through the multilayer partition plates, so that the contact area between the blast furnace gas and water in the water accumulation area can be further increased, and the dust removal effect is improved.
The utility model discloses further set up to: a grid is arranged on the inner wall of the tower body, and fillers are stacked on the grid;
the grating and the filler are both positioned between the cold water pipeline layer and the dehydrator.
By adopting the technical scheme, after the blast furnace gas containing the water vapor contacts with the filler, the water vapor is rapidly condensed and then returns to the water accumulation area under the action of gravity, so that the content of the water vapor in the blast furnace gas can be further reduced.
The utility model discloses further set up to: the inner wall of the tower body is provided with a conical spacer ring, and the spacer ring is positioned between the grating and the cold water pipeline layer;
in the direction from top to bottom, the sectional area of the conical spacer ring tends to decrease.
Through adopting above-mentioned technical scheme, the water that leaves from packing is gathered together rapidly after falling on the toper spacer ring, then falls in the ponding district, rather than flowing to the ponding district slowly along the inner wall of tower body, and the circulation rate of moisture can be accelerated to the toper spacer ring, reduces its dead time on the tower body inner wall.
The utility model discloses further set up to: one end of the air inlet pipeline positioned in the tower body is provided with an air guide pipe;
the area of the airway tube tends to decrease in a direction away from the inlet duct.
Through adopting above-mentioned technical scheme, the blast furnace gas is flow into behind the air duct, and the velocity of flow accelerates, can follow the air duct blowout with faster speed, and the depth of incidence increases, and is corresponding, and the contact time of water in the ponding district also can increase.
To sum up, the utility model discloses a beneficial technological effect does:
1. in the production process, the blast furnace gas enters a water accumulation area in the tower body through a gas inlet pipeline, flows from bottom to top after contacting, sequentially passes through a super-cooled water pipeline layer and a dehydrator, and is finally discharged from an exhaust pipeline. When the blast furnace gas enters the water accumulation area, dust contained in the blast furnace gas is remained in water in the water accumulation area, the dust amount in the blast furnace gas is reduced, the water vapor content is increased, the blast furnace gas is condensed when passing through the super-cooling water pipeline layer and the dehydrator, and the water vapor in the blast furnace gas is rapidly reduced. Under the dust removal mode, dust removal and dehydration are finished in the tower body, and the utilization rate of the space can be improved.
2. After the filler on the grid and the blast furnace gas with water vapor are contacted with the filler, the water vapor is rapidly condensed and then returns to the water accumulation area under the action of gravity, so that the content of the water vapor in the blast furnace gas can be further reduced.
3. The conical spacer ring on the inner wall of the tower body can enable the water intercepted by the filler to be quickly accumulated and then fall back to a water accumulation area in the tower body, so that the circulation speed of the water in the tower body is improved.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is based on the internal structure diagram of fig. 1.
In the figure, 11, a tower body, 12, a water accumulation area, 13, an air inlet pipeline, 14, a cold water pipeline layer, 15, a dehydrator, 16, an exhaust pipeline, 21, a dust remover, 22, a partition plate, 23, an air hole, 31, a grid, 32, a filler, 33, a conical spacer ring, 41 and an air guide pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the embodiment of the utility model discloses a blast furnace gas dust removal dehydration tower, mainly by tower body 11, ponding district 12, admission line 13, cold water pipeline layer 14 and dehydrator 15 etc. constitute, tower body 11 is cylindrical, by cylindrical back cover, body of the tower and head triplex, ponding district 12, admission line 13, cold water pipeline layer 14 and dehydrator 15 etc. all are located tower body 11.
The water accumulation zone 12 is a region at the bottom of the tower 11 in which a quantity of water is stored for bathing the blast furnace gas. One end of the gas inlet pipe 13 is positioned outside the tower body 11, and the other end of the gas inlet pipe passes through the tower body 11 and then extends into the water accumulation area 12, so that the blast furnace gas is introduced into the water accumulation area 12.
The cold water pipe layer 14 is composed of a plurality of pipes, which are arranged in parallel, and two ends of each pipe respectively penetrate out of the side walls of the adjacent tower bodies 11. When the blast furnace gas cooling device works, low-temperature water circularly flows in the cold water pipeline layer 14, and after the blast furnace gas contacts with the outer wall of the cold water pipeline layer 14, the contained water vapor is quickly condensed and separated from the blast furnace gas. The dehydrator 15 is also fixedly arranged on the inner wall of the tower body 11 and positioned above the cold water pipeline layer 14, and when the blast furnace gas passes through the dehydrator 15, the contained water vapor can be continuously condensed and separated from the blast furnace gas.
The exhaust pipeline 16 is positioned at the top end of the tower body 11 and communicated with the tower body 11, and is used for guiding the blast furnace gas subjected to water bath dust removal and dehydration into subsequent secondary drying equipment or sending the blast furnace gas into a boiler to be used as a combustion medium.
In the production process, blast furnace gas generated by the blast furnace enters the water accumulation area 12 in the tower body 11 through the gas inlet pipeline 13, and after the blast furnace gas is contacted with water in the water accumulation area 12, heat exchange is rapidly carried out to generate a large amount of water vapor, and meanwhile, dust in the blast furnace gas is also remained in the water accumulation area 12.
The blast furnace gas entering the water bath and the water vapor generated in the water bath process flow upwards and sequentially enter the supercooled water pipe layer 14 and the dehydrator 15, in the process, the water vapor in the blast furnace gas is condensed on the outer walls of the cold water pipe layer 14 and the dehydrator 15, and condensed water drops fall into the water accumulation area 12 below. The blast furnace gas that has passed through the layer of cold water pipes 14 and the water separator 15 is finally discharged from the exhaust gas pipe 16.
When the blast furnace gas flows into the water in the water accumulation area 12, the blast furnace gas is subjected to the resistance of the water, in order to enable the blast furnace gas to flow out of the air inlet pipeline 13 as soon as possible, a section of air duct 41 is additionally arranged at one end of the air inlet pipeline 13 in the water accumulation area 12, the air duct 41 is a section of conical pipe, and the area of the air duct 41 tends to decrease in the direction away from the air inlet pipeline 13.
The gas-guide tube 41 can increase the spraying speed of blast furnace gas, prolong the contact time of the blast furnace gas and water and further improve the effect of water bath dust removal.
The blast furnace gas which just flows out of the blast furnace contains a large amount of large-particle dust, in order to avoid the large-particle dust from entering the tower body 11, the dust remover 21 is additionally arranged at the front end of the air inlet pipeline 13, the dust remover 21 mainly plays a role in filtering the large-particle dust in the blast furnace gas and avoiding the large-particle dust from entering the tower body 11, on one hand, the dust removing amount in the tower body 11 can be reduced, on the other hand, the generation amount of water vapor in the tower body 11 can be reduced, and further, the water content of the blast furnace gas which flows out of the exhaust pipeline 16 is reduced.
Further, the dust separator 21 is a cyclone.
In the process that blast furnace gas flows out from the gas inlet pipeline 13, the gas inlet pipeline 13 is blown open, the volume of bubbles generated at the moment is large, the contact area of the bubbles with water in the water accumulation area 12 is small, in order to increase the contact area of the blast furnace gas and the water, a partition plate 22 is additionally arranged on the inner wall of the tower body 11, the partition plate 22 is positioned below the water surface in the water accumulation area 12, gas holes 23 are uniformly distributed on the partition plate 22, one end of the gas inlet pipeline 13 positioned in the tower body 11 is positioned below the partition plate 22, so that the blast furnace gas flowing out from the gas inlet pipeline 13 firstly moves to the lower part of the partition plate 22 and then passes through the gas holes 23 on the partition plate 22, in the process of passing through the gas holes 23, the large-volume bubbles are divided into a plurality of small-volume bubbles, and the contact area of the blast furnace.
Further, the number of the partition plates 22 is increased to a plurality, and the plurality of partition plates 22 are arranged at intervals from bottom to top, so that bubbles can be cut, and the volume of the bubbles is further reduced.
Further, the diameter of the air holes 23 of the partition plates 22 gradually decreases in the bottom-up direction, so that the volume of the air bubbles is further reduced and the contact area with the water in the water accumulation region 12 is increased every time the air bubbles pass through one partition plate 22.
The blast furnace gas subjected to water bath dust removal contains a large amount of water vapor, a grating 31 is additionally arranged on the inner wall of the tower body 11 besides the cold water pipeline layer 14 and the dehydrator 15, the grating 31 is fully filled with fillers 32, and the grating 31 and the fillers 32 are both positioned between the cold water pipeline layer 14 and the dehydrator 15. The connection mode of the grid 31 and the tower body 11 is as follows: a plurality of triangular supports are fixed on the inner wall of the tower body 11, then the grids 31 are directly lapped on the adjacent supports, and the filler 32 is directly paved on the grids 31 and has a certain thickness.
During production, blast furnace gas dedusted by the water bath flows upwards in the tower body 11, and passes through the grating 31 and the filler 32 in the process, and during the process of passing through the filler 32, water vapor in the blast furnace gas is condensed on the surface of the filler 32, condensed into water drops and then falls into the lower water accumulation area 12.
Further, the filler 32 is a PP filler.
In addition to the water accumulation zone 12 directly below, the water droplets formed on the surface of the packing 32 partially flow down along the inner wall of the tower body 11, but the water is intercepted by the blast furnace gas rising during the flow, the flow speed is reduced, and the possibility of blast furnace gas absorption is also present. In order to avoid this, a conical spacer ring 33 is additionally arranged on the inner wall of the tower body 11, and the conical spacer ring 33 is directly fixed on the inner wall of the tower body 11 and is positioned between the grating 31 and the cold water pipeline layer 14, namely, right below the grating 31, and the sectional area of the conical spacer ring tends to decrease in the direction from top to bottom. The condensate thus produced in the packing 32, except for the lower water accumulation region 12, flows completely onto the conical spacer ring 33, then accumulates in the conical spacer ring 33 and finally falls directly into the lower water accumulation region 12.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A blast furnace gas dust removal dehydration tower is characterized by comprising:
a tower (11);
the water accumulation area (12) is arranged at the bottom of the tower body (11);
an air inlet pipe (13), one end of which extends into the water accumulation area (12) inside the tower body (11);
the cold water pipeline layer (14) is arranged in the tower body (11) and is positioned above the water accumulation area (12);
the dehydrator (15) is arranged in the tower body (11) and is positioned above the cold water pipeline layer (14); and
and the exhaust pipeline (16) is arranged at the top of the tower body (11).
2. The blast furnace gas dedusting and dewatering tower according to claim 1, wherein: and the dust remover also comprises a dust remover (21) connected with one end of the air inlet pipeline (13) positioned outside the tower body (11).
3. The blast furnace gas dedusting and dewatering tower according to claim 2, wherein: the dust remover (21) is a cyclone dust remover.
4. The blast furnace gas dedusting and dewatering tower according to claim 1, wherein: a partition plate (22) is arranged on the inner wall of the tower body (11), and air holes (23) are uniformly distributed in the partition plate (22);
the baffle plate (22) is positioned in the water accumulation area (12), and one end of the air inlet pipeline (13) positioned in the tower body (11) penetrates through the baffle plate (22) from top to bottom.
5. The blast furnace gas dedusting and dewatering tower according to claim 4, wherein: the number of the partition plates (22) is multiple, and the partition plates (22) are arranged on the inner wall of the tower body (11) at intervals from bottom to top;
the diameter of the air hole (23) on the partition plate (22) tends to decrease from bottom to top.
6. The blast furnace gas dedusting and dewatering tower according to claim 1, wherein: a grating (31) is arranged on the inner wall of the tower body (11), and a filler (32) is stacked on the grating (31);
the grille (31) and the filler (32) are both positioned between the cold water pipeline layer (14) and the dehydrator (15).
7. The blast furnace gas dedusting and dewatering tower according to claim 6, wherein: a conical spacer ring (33) is arranged on the inner wall of the tower body (11), and the spacer ring (33) is positioned between the grating (31) and the cold water pipeline layer (14);
the sectional area of the conical spacer ring (33) tends to decrease from top to bottom.
8. The blast furnace gas dust removal and dehydration tower of any one of claims 1 to 7, wherein: one end of the air inlet pipeline (13) positioned in the tower body (11) is provided with an air guide pipe (41);
the area of the air duct (41) tends to decrease in a direction away from the air intake duct (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922300852.3U CN211513869U (en) | 2019-12-19 | 2019-12-19 | Blast furnace gas dust removal dehydration tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922300852.3U CN211513869U (en) | 2019-12-19 | 2019-12-19 | Blast furnace gas dust removal dehydration tower |
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| CN211513869U true CN211513869U (en) | 2020-09-18 |
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| CN201922300852.3U Active CN211513869U (en) | 2019-12-19 | 2019-12-19 | Blast furnace gas dust removal dehydration tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113101776A (en) * | 2021-04-29 | 2021-07-13 | 江苏永钢集团有限公司 | Dust removal device for high-speed wire rod rough and medium rolling |
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2019
- 2019-12-19 CN CN201922300852.3U patent/CN211513869U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113101776A (en) * | 2021-04-29 | 2021-07-13 | 江苏永钢集团有限公司 | Dust removal device for high-speed wire rod rough and medium rolling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A type of blast furnace gas dust removal and dehydration tower Effective date of registration: 20230418 Granted publication date: 20200918 Pledgee: Cangzhou Bank Co.,Ltd. Shijiazhuang Gaocheng Sub branch Pledgor: Shijiazhuang Hongsen smelting and Casting Co.,Ltd. Registration number: Y2023980038448 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |