CN111004880A - White device that disappears of blast furnace water sediment system - Google Patents
White device that disappears of blast furnace water sediment system Download PDFInfo
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- CN111004880A CN111004880A CN201911354086.7A CN201911354086A CN111004880A CN 111004880 A CN111004880 A CN 111004880A CN 201911354086 A CN201911354086 A CN 201911354086A CN 111004880 A CN111004880 A CN 111004880A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 239000013049 sediment Substances 0.000 title description 2
- 239000002893 slag Substances 0.000 claims abstract description 70
- 239000007921 spray Substances 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 230000002087 whitening effect Effects 0.000 claims description 26
- 238000009833 condensation Methods 0.000 claims description 24
- 230000005494 condensation Effects 0.000 claims description 24
- 238000003379 elimination reaction Methods 0.000 claims description 23
- 230000008030 elimination Effects 0.000 claims description 22
- 238000005469 granulation Methods 0.000 claims description 12
- 230000003179 granulation Effects 0.000 claims description 12
- 238000010791 quenching Methods 0.000 claims description 7
- 230000000171 quenching effect Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 4
- 238000005453 pelletization Methods 0.000 claims 4
- 238000000034 method Methods 0.000 abstract description 16
- 238000011001 backwashing Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 description 29
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 23
- 229910052717 sulfur Inorganic materials 0.000 description 21
- 239000011593 sulfur Substances 0.000 description 21
- 238000011010 flushing procedure Methods 0.000 description 9
- 238000004061 bleaching Methods 0.000 description 8
- 241000276489 Merlangius merlangus Species 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a blast furnace slag system white-eliminating device which comprises a granulating white-eliminating tower (2) and a white-eliminating pool (6), wherein the lower part of the granulating white-eliminating tower (2) is provided with a blast furnace slag inlet (9) and a granulator (1), a condensing spray device (4) is arranged in the granulating white-eliminating tower (2), the upper part of the granulating white-eliminating tower (2) is provided with a steam outlet (10), a filter layer (7) and a filter pipe (8) are arranged in the white-eliminating pool (6), and the steam outlet (10) is connected with the filter pipe (8) through a steam conveying pipeline (11). The white-removing device of the blast furnace water slag system fully utilizes the filter material in the bottom filter process, and leads a small part of steam which is not condensed by the condensing and spraying device to the bottom of the white-removing tank in the steam white-removing process, so that not only is thorough steam white-removing treatment realized, but also the filter material is backwashed by steam first and then by water, so that the backwashing efficiency of the filter material can be improved, and the activity of the filter material can be improved.
Description
Technical Field
The invention relates to the field of metal smelting equipment, in particular to a white-removing device of a blast furnace water slag system.
Background
High-temperature liquid slag (1350 ℃ -1500 ℃) is generated during blast furnace smelting, 7 hundred million tons of molten iron are produced in China every year, and 2.5 million tons of high-temperature liquid slag are generated. The slag is usually granulated at home and abroad by a precipitation filtration method (often called bottom filtration method) and a granulating process. The method comprises the steps of carrying out hydraulic slag flushing in front of a blast furnace, crushing slag by water quenching to obtain a slag-water mixture (often called water slag), enabling water slag to enter a filter tank through a slag flushing channel, filtering liquid water by a filter layer in the filter tank for recycling, leaving solid slag particles in the filter tank, and then grabbing, loading and transporting the slag particles by a bridge type grab crane.
The granulated slag process can generate a large amount of sulfur-containing steam (about 60-100 ℃) in the process of granulating the molten slag, the granulated slag steam has corrosiveness, the surrounding environment is polluted in the emission process, surrounding equipment is corroded, and meanwhile, the emitted steam can also corrode the blast furnace equipment to a certain extent due to the fact that the distance between the filter tank and the blast furnace is very close.
With the increasing environmental protection situation in China, the demand of iron and steel enterprises for the steam whitening technology of the water granulated slag process is more and more strong. Related research has been carried out for many years at home and abroad, and slag flushing steam is hopefully eliminated to realize steam whitening. For example, chinese patent CN 107815514 a, published as 2018, 3 and 20, discloses an apparatus and a method for recovering slag flushing water vapor and eliminating white fog, which first adopts a spray cooling mode to realize vapor recovery, and then utilizes hot blast furnace flue gas to heat steam to prevent white smoke generation. The method can effectively reduce partial steam emission, and the generation of white smoke can be prevented by utilizing the temperature-rising steam of the flue gas of the hot blast stove, but partial steam is finally discharged into the atmosphere, namely, the real and thorough white elimination can not be realized.
Disclosure of Invention
In order to realize real and thorough white elimination, the invention provides a white elimination device of a blast furnace water slag system, which makes full use of a filter material in a bottom filtration process, leads a small part of steam which is not condensed by a condensation spraying device to the bottom of a white elimination pool in the steam white elimination process, not only realizes thorough steam white elimination treatment, but also firstly uses the steam to carry out back washing on the filter material and then uses water to carry out back washing on the filter material, can improve the back washing efficiency of the filter material, improve the activity of the filter material, and avoid the problems of easy hardening and short service life of the filter material.
The technical scheme adopted by the invention for solving the technical problems is as follows: a blast furnace slag system white elimination device comprises a granulation white elimination tower and a white elimination pool, wherein the lower part of the granulation white elimination tower is provided with a blast furnace slag inlet and a granulator, a condensation spray device is arranged in the granulation white elimination tower, the upper part of the granulation white elimination tower is provided with a steam outlet, a filter layer and a filter pipe are arranged in the white elimination pool, and the steam outlet is connected with the filter pipe through a steam conveying pipeline.
The blast furnace slag inlet and the granulator are arranged up and down, and the condensation spraying device is positioned between the blast furnace slag inlet and the steam outlet.
And a spray water collecting hopper is also arranged in the granulating and whitening tower and is positioned between the condensation spraying device and the blast furnace slag inlet.
The side wall of the granulation and white elimination tower is provided with a spray water inlet through which spray water can be supplied to the condensation spray device.
The side wall of the granulation and water-reducing tower is provided with a water collecting outlet, and water collected by the spray water collecting hopper can be discharged through the water collecting outlet.
The condensation spraying device comprises at least one layer of high-pressure atomizing nozzle.
The steam outlet is positioned at the top of the granulating and whiting tower, and the steam conveying pipeline is provided with a steam fan.
The filter pipe is positioned in or below the filter layer.
The filter layer contains a filter material with the particle size gradually increasing from top to bottom.
The upper end surface of the white water eliminating pool is higher than the upper surface of the filter layer.
The invention has the beneficial effects that:
1. the invention can fully utilize the condensing spray device and the filter material in the bottom filtering process to realize thorough steam white elimination treatment.
2. The invention can realize the complete recovery of the steam in the slag flushing and granulating process and realize the recycling of water resources.
3. The invention can improve the back washing efficiency of the filter material, improve the activity of the filter material and avoid the problems of easy hardening and short service life of the filter material.
4. The invention is not only suitable for the new construction project of the blast furnace, but also suitable for the environmental protection reconstruction of the existing blast furnace water slag system.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural diagram of a blast furnace granulated slag system de-whitening device of the invention.
Fig. 2 is a sectional view taken along a-a in fig. 1.
Fig. 3 is a schematic view of a granulated absorption tower at the location of a spray water collection hopper.
FIG. 4 is a top view of the outer bucket body and water collection pipe.
Fig. 5 is a sectional view taken along the direction B-B in fig. 4.
1. A granulator; 2. granulating and eliminating the white tower; 3. a spray water collecting hopper; 4. a condensation spraying device; 5. a steam fan; 6. a white water removal pool; 7. a filter layer; 8. a filter tube; 9. a blast furnace slag inlet; 10. a steam outlet; 11. a vapor delivery line; 12. a spray water inlet; 13. a collected water outlet;
31. an inner barrel bucket; 32. an outer barrel bucket; 33. a water collection pipeline; 34. an outer bucket body; 35. an inner baffle ring; 36. a drain through hole; 37. an annular water collection tank; 38. condensed water and spray water; 39. a sulfur-containing vapor.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A blast furnace slag system white elimination device comprises a granulation white elimination tower 2 and a white elimination pool 6, wherein a blast furnace slag inlet 9 and a granulator 1 are arranged at the lower part of the granulation white elimination tower 2, a condensation spray device 4 is arranged in the granulation white elimination tower 2, a steam outlet 10 is arranged at the upper part of the granulation white elimination tower 2, a filter layer 7 and a filter pipe 8 are arranged in the white elimination pool 6, and the steam outlet 10 is connected with the filter pipe 8 through a steam conveying pipeline 11, as shown in figure 1.
The steam outlet 10 is connected with the filter pipe 8 through a steam conveying pipeline 11, and the residual sulfur-containing steam which is not condensed is discharged from the steam outlet 10 and then enters the filter pipe 8 through the steam conveying pipeline 11, namely, a small part of steam which is not condensed by the condensation spraying device is guided into the bottom of the bleaching tank. Therefore, not only is the thorough steam whitening treatment realized, but also the backwashing on the filter material is carried out by using the steam firstly and then the backwashing on the filter material is carried out by using the water, so that the backwashing efficiency on the filter material can be improved, the activity of the filter material is improved, and the problems of easy hardening and short service life of the filter material are avoided.
In this embodiment, the blast furnace slag inlet 9 is provided vertically corresponding to the granulator 1, and the condensation shower device 4 is provided between the blast furnace slag inlet 9 and the steam outlet 10. The granulating and whitening tower 2 is also internally provided with a spray water collecting hopper 3, and the spray water collecting hopper 3 is positioned between the condensation spraying device 4 and the blast furnace slag inlet 9. The steam outlet 10, the condensation spray device 4, the spray water collecting hopper 3, the blast furnace slag inlet 9 and the granulator 1 are sequentially arranged from top to bottom.
The spray water collecting bucket 3 can be a product in the prior art, or in the invention, the spray water collecting bucket 3 comprises an inner barrel bucket 31, an outer barrel bucket 32 and a water collecting pipeline 33, the inner barrel bucket 31 is sleeved in the outer barrel bucket 32, and an annular channel is formed between the inner barrel bucket 31 and the outer barrel bucket 32. The axial line of the inner barrel bucket 31, the axial line of the outer barrel bucket 32 and the axial line of the granulating and whitening tower 2 are coincident. Interior barrel fill 31 is the circular cone tubular structure of top end down bottom end up, and outer barrel fill 32 contains outer bucket body 34 and interior fender ring 35, and in the lower extreme of outer bucket body 34 was located to interior fender ring 35 cover, the axis of interior fender ring 35 and the coincidence of the axis of outer bucket body 34, outer bucket body 34 is the circular cone tubular structure of top end bottom end up down, through annular connecting plate sealing connection between the lower extreme of outer bucket body 34 and the lower extreme of interior fender ring 35, forms annular water catch bowl 37 between outer bucket body 34 and the interior fender ring 35.
The upper end of the inner bucket 31 is higher than the upper end of the outer bucket 32, and the lower end of the inner bucket 31 is flush with the lower end of the outer bucket 32. The upper and lower both ends of inner barrel fill 31 are open state, and the upper and lower both ends of outer bucket body 34 are open state, and collection water pipe way 33 is horizontal state, and the lower extreme that inner barrel was fought 31 and the lower extreme that outer barrel was fought 32 all are connected with collection water pipe way 33, and the inside of inner barrel fill 31 and the inside intercommunication of collecting water pipe way 33, be equipped with drainage through hole 36 in the annular connecting plate, annular water catch bowl 37 passes through drainage through hole 36 and the inside intercommunication of collecting water pipe way 33.
The outer diameter of the upper end of the inner barrel bucket 31 is smaller than the inner diameter of the granulating and whitening tower 2, and an annular space is formed between the upper end of the inner barrel bucket 31 and the inner surface of the granulating and whitening tower 2. The outer diameter of the lower end of the inner barrel bucket 31 is smaller than the inner diameter of the inner retaining ring 35, the outer diameter of the upper end of the outer bucket body 34 is equal to the inner diameter of the granulating and whitening tower 2, the outer bucket body 34 is fixedly connected with the granulating and whitening tower 2, and the lower end of the outer bucket body 34 is flush with the lower end of the inner retaining ring 35, namely the lower end of the inner barrel bucket 31, the lower end of the outer bucket body 34 and the lower end of the inner retaining ring 35 are flush. One end of the water collecting pipeline 33 is positioned outside the granulating and whitening tower 2, the outer diameter of the water collecting pipeline 33 is smaller than the inner diameter of the inner baffle ring 35, and one end of the water collecting pipeline 33 is a water collecting outlet 13, as shown in fig. 1 to 5.
During use, the sulfur-containing steam 39 moves upward and sequentially passes through the lower end of the inner baffle ring 35, the annular channel and the annular space, and most of the sulfur-containing steam becomes condensed water under the action of atomized spray water. The condensed water and a part of the shower water 38 fall into the lower end of the inner bucket 31, then enter the collected water pipe 33 and are discharged from the collected water outlet 13. The condensed water and another portion of the shower water 38 fall into an annular water collection trough 37 at the lower end of the outer bucket 32, then enter the collection water conduit 33 and are discharged from the collection water outlet 13, as shown in fig. 3.
In the embodiment, the side wall of the granulation and white reduction tower 2 is provided with a spray water inlet 12 and a collected water outlet 13, the spray water inlet 12 is connected with the condensation spray device 4, and spray water can be supplied to the condensation spray device 4 through the spray water inlet 12. The position of the collected water outlet 13 corresponds to the position of the spray water collecting hopper 3, and the water collected by the spray water collecting hopper 3 can be discharged out of the granulating and whitening tower 2 through the collected water outlet 13. The lower part of the granulating and whiting tower 2 is also provided with a slag flushing water inlet and a grain slag outlet.
In this embodiment, the condensation spraying device 4 comprises at least one layer of high-pressure atomizing nozzles, and the condensation spraying device 4 can spray cold water to condense high-temperature sulfur-containing vapor to form condensed water, which will be collected in the collecting area of the spray water collecting hopper 3. The steam outlet 10 is positioned at the top of the granulating and whitening tower 2, the steam conveying pipeline 11 is provided with a steam fan 5, and the steam fan 5 is used for leading residual sulfur-containing steam discharged from the steam outlet 10 to enter the filter pipe 8 through the steam conveying pipeline 11.
In this embodiment, the wall of the filtering pipe 8 has a plurality of filtering through holes, and the residual sulfur-containing vapor enters the filtering pipe 8 and then passes through the filtering through holes to enter the filtering layer 7, as shown in fig. 2. The structure of the whitening tank 6 is basically the same as that of the existing filtering tank, the filtering pipe 8 is positioned in the filtering layer 7 or below the filtering layer 7, preferably, the filtering pipe 8 is positioned at the lower part of the filtering layer 7, and the filtering layer 7 contains filtering materials with gradually-increased grain sizes from top to bottom.
The working process of the white eliminating device of the blast furnace granulated slag system is described below.
High-temperature molten slag (1350-1500 ℃) enters the granulating and whitening tower 2 from a blast furnace molten slag inlet 9, a large amount of high-speed granulating water (about 40-45 ℃) is sprayed out from the granulator 1 to enter the granulating and whitening tower 2, the high-temperature molten slag is granulated under the action of the granulating water, and a slag-water mixture and a large amount of sulfur-containing steam (about 80-100 ℃) are formed.
The slag flushing water enters the granulating and whiting tower 2 from a slag flushing water inlet at the lower part of the granulating and whiting tower 2, and the slag water mixture is flushed out of the granulating and whiting tower 2 from a slag flushing water outlet at the lower part of the granulating and whiting tower 2. The sulfur-containing steam moves upward inside the granulating and whitening tower 2 by the action of the steam blower 5.
The condensation spray device 4 sprays spray water (about 40-45 ℃) to form an atomized state in the granulating and whitening tower 2, and the atomized spray water is uniformly distributed in the inner space of the granulating and whitening tower 2. This contain sulphur steam upwards passes spray water and collects 3 entering atomized water regions of fighting, and most contain sulphur steam becomes the comdenstion water under atomized spray water's effect, and this comdenstion water falls into spray water collection of condensation spray set 4 below with spray water and fights 3 together. The water collected by the spray water collecting hopper 3 (i.e., the above-mentioned condensed water and spray water) is discharged from the collected water outlet 13 out of the granulated absorption tower 2 and then may be sent to a cooling tower. The steam blower 5 directs the remaining portion of the sulfur-containing steam that is not condensed by the atomized spray water through a steam delivery line 11 into the filter tubes 8 of the blank space 6.
The residual part of sulfur-containing steam is discharged from the filtering through holes of the filtering pipes 8 and upwards enters the filtering layer 7 of the bleaching tank 6, the residual part of sulfur-containing steam moves upwards to back flush the filtering material of the filtering layer 7, the bleaching tank 6 contains deposition water, the water level of the deposition water is generally positioned between the upper surface of the filtering layer 7 and the upper end surface of the bleaching tank 6, and after the residual part of sulfur-containing steam is discharged from the filtering through holes of the filtering pipes 8 and enters the bleaching tank 6, the deposition water can completely absorb the residual part of sulfur-containing steam, so that the true complete bleaching is realized.
The method for eliminating the white slag by the blast furnace slag bottom filtration method is introduced below, the device for eliminating the white slag by the blast furnace slag system is adopted in the method for eliminating the white slag by the blast furnace slag bottom filtration method, and the method for eliminating the white slag by the blast furnace slag bottom filtration method comprises the following steps:
step 1: the high-temperature slag (1350-1500 ℃) meets granulating water (about 40-45 ℃) to generate slag-water mixture and a large amount of sulfur-containing steam (about 80-100 ℃);
step 2: the sulfur-containing steam moves upwards, spray water (about 40-45 ℃) is sprayed out of the condensation spraying device 4 to spray the sulfur-containing steam, and most of the sulfur-containing steam becomes condensed water under the action of the spray water;
and step 3: the rest part of the sulfur-containing steam enters a filter pipe 8 of a bleaching tank 6, and the bleaching tank 6 contains deposition water;
and 4, step 4: the remainder of the sulfur-containing vapor exits the filter tubes 8 and passes upward into the filter layer 7 of the blank space 6.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.
Claims (10)
1. The utility model provides a white device that disappears of blast furnace granulated slag system, its characterized in that, this white device that disappears of blast furnace granulated slag system includes pelletization white tower (2) and white pond (6) that disappears, the lower part of pelletization white tower (2) is equipped with blast furnace slag entry (9) and granulator (1), be equipped with condensation spray set (4) in the pelletization white tower (2), the upper portion of pelletization white tower (2) is equipped with steam outlet (10), be equipped with filter layer (7) and filter tube (8) in the white pond (6) that disappears, steam outlet (10) are connected with filter tube (8) through steam conveying pipeline (11).
2. The blast furnace granulated slag system whitening apparatus according to claim 1, wherein the blast furnace slag inlet (9) and the granulator (1) are arranged above and below each other, and the condensation spray device (4) is located between the blast furnace slag inlet (9) and the steam outlet (10).
3. The blast furnace granulated slag system whitening device according to claim 1, wherein a spray water collecting hopper (3) is further arranged in the granulating whitening tower (2), and the spray water collecting hopper (3) is positioned between the condensation spraying device (4) and the blast furnace slag inlet (9).
4. The white quenching device of the blast furnace granulated slag system according to claim 3, wherein the side wall of the granulated white quenching tower (2) is provided with a spray water inlet (12), and spray water can be supplied to the condensation spray device (4) through the spray water inlet (12).
5. The white quenching device of the blast furnace granulated slag system according to claim 3, wherein the side wall of the granulating white quenching tower (2) is provided with a collected water outlet (13), and water collected by the spray water collecting hopper (3) can be discharged through the collected water outlet (13).
6. The blast furnace granulated slag system whitening apparatus according to claim 1, wherein the condensation spraying device (4) comprises at least one layer of high-pressure atomizing nozzles.
7. The white quenching device of the blast furnace granulated slag system according to claim 1, wherein the steam outlet (10) is positioned at the top of the granulation white quenching tower (2), and the steam conveying pipeline (11) is provided with a steam fan (5).
8. The white elimination device of the blast furnace granulated slag system according to claim 1, wherein the filter pipe (8) is positioned in the filter layer (7) or below the filter layer (7).
9. The blast furnace granulated slag system whitening apparatus according to claim 1, wherein the filter layer (7) contains a filter material having a particle size gradually increasing from top to bottom.
10. The blast furnace granulated slag system whitening device according to claim 1, wherein the upper end surface of the whitening pool (6) is higher than the upper surface of the filter layer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911354086.7A CN111004880B (en) | 2019-12-25 | 2019-12-25 | White device of blast furnace grain slag system that disappears |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911354086.7A CN111004880B (en) | 2019-12-25 | 2019-12-25 | White device of blast furnace grain slag system that disappears |
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| CN111004880A true CN111004880A (en) | 2020-04-14 |
| CN111004880B CN111004880B (en) | 2024-03-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393568A (en) * | 2001-07-03 | 2003-01-29 | 昆明钢铁集团有限责任公司炼铁厂 | Method for using air or water to reversely flush grain slag filter of blast furnace |
| CN203043658U (en) * | 2012-12-24 | 2013-07-10 | 中国船舶重工集团公司第七○二研究所 | Fast filtering pond |
| CN107815514A (en) * | 2017-12-07 | 2018-03-20 | 中冶京诚工程技术有限公司 | The system and recovery method of washing slag water Steam Recovery and the white haze that disappears |
| CN109457070A (en) * | 2018-12-27 | 2019-03-12 | 中冶京诚工程技术有限公司 | A kind of blast furnace granulated slag process steam disappears bletilla heat reclaiming system |
| CN109457069A (en) * | 2018-12-27 | 2019-03-12 | 中冶京诚工程技术有限公司 | A kind of granulated energy conservation of blast furnace cinder disappears white system |
| CN211471465U (en) * | 2019-12-25 | 2020-09-11 | 中冶京诚工程技术有限公司 | White device that disappears of blast furnace water sediment system |
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| CN1393568A (en) * | 2001-07-03 | 2003-01-29 | 昆明钢铁集团有限责任公司炼铁厂 | Method for using air or water to reversely flush grain slag filter of blast furnace |
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| CN107815514A (en) * | 2017-12-07 | 2018-03-20 | 中冶京诚工程技术有限公司 | The system and recovery method of washing slag water Steam Recovery and the white haze that disappears |
| CN109457070A (en) * | 2018-12-27 | 2019-03-12 | 中冶京诚工程技术有限公司 | A kind of blast furnace granulated slag process steam disappears bletilla heat reclaiming system |
| CN109457069A (en) * | 2018-12-27 | 2019-03-12 | 中冶京诚工程技术有限公司 | A kind of granulated energy conservation of blast furnace cinder disappears white system |
| CN211471465U (en) * | 2019-12-25 | 2020-09-11 | 中冶京诚工程技术有限公司 | White device that disappears of blast furnace water sediment system |
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