CN109351101B - Chimney recovery device of flushing tower for treating water vapor by blast furnace slag - Google Patents
Chimney recovery device of flushing tower for treating water vapor by blast furnace slag Download PDFInfo
- Publication number
- CN109351101B CN109351101B CN201811237737.XA CN201811237737A CN109351101B CN 109351101 B CN109351101 B CN 109351101B CN 201811237737 A CN201811237737 A CN 201811237737A CN 109351101 B CN109351101 B CN 109351101B
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- Prior art keywords
- chimney
- water
- diffuser
- jet nozzle
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 239000002893 slag Substances 0.000 title claims abstract description 34
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 12
- 238000011084 recovery Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000010791 quenching Methods 0.000 claims abstract description 11
- 230000000171 quenching effect Effects 0.000 claims abstract description 11
- 238000004080 punching Methods 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 8
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 19
- 239000007789 gas Substances 0.000 description 15
- 230000002087 whitening effect Effects 0.000 description 9
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000003916 acid precipitation Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
-
- 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
Abstract
A chimney recovery device of a flushing tower for treating water vapor by blast furnace slag belongs to the technical field of blast furnace slag treatment equipment and is used for recovering the water vapor treated by the blast furnace slag. The technical proposal is as follows: install jet nozzle and jet fan in the gas-collecting channel, jet nozzle is towards the upper end of gas-collecting channel, jet fan is connected with jet nozzle, install the diffuser in the lower part of chimney, the water catch bowl is installed to the top of diffuser, the water catch bowl is connected with water quenching slag flushing water tank through the wet return, annular water curtain generator is installed to the top of water catch bowl, annular water curtain generator is spiral pipe spiral structure, spiral pipe is around the circumference of chimney along the inner wall of chimney, spiral pipe circumference equipartition has the nozzle of horizontal direction, the nozzle is towards the vertical central axis of chimney, gas-liquid separator is installed to annular water curtain generator's top. The invention has simple structure, convenient use and good effect, can reduce or eliminate the emission of harmful substances such as hydrogen sulfide, sulfur dioxide and the like along with steam, and protects the surrounding environment.
Description
Technical Field
The invention relates to a chimney recovery device of a punching tower for recovering steam generated in blast furnace slag treatment, and belongs to the technical field of blast furnace slag treatment equipment.
Background
In the blast furnace ironmaking slag treatment process, liquid slag after slag-iron separation is quenched by water to prepare water slag, a large amount of steam is generated by the contact of slag and water under the action of heat exchange, and finally the water slag is collected by a steam collecting cover and directly discharged to the atmosphere through a chimney of a casting tower, and saturated steam discharged into the atmosphere by the chimney is condensed when meeting low-temperature air to generate visual white smoke, namely, the phenomenon of whitening chimney discharge. At present, most of the steam generated in the blast furnace water quenching slag treatment process is directly discharged, and firstly, a large amount of steam is discharged to the atmosphere to cause water shortage in the equipment operation process, new water is needed to be supplemented, and a large amount of water resources are wasted; secondly, a large amount of steam is discharged to the atmosphere without being treated, and as the steam generated by the water quenching slag contains harmful substances such as hydrogen sulfide, sulfur dioxide and the like, partial acid rain is easy to form, and surrounding structures can be corroded to influence the surrounding environment.
At present, the enterprises adopt measures when the whitening phenomenon of chimney emissions is reduced, namely, a method of mixing hot air is used for reducing the whitening phenomenon, but the steam generated in the slag treatment process has large water content and lower temperature, so that extra heat is required to be consumed, equipment with complex configuration is arranged, and the economy is poor; secondly, the whitening phenomenon is reduced by using a form of a closed steam collecting cover and an atomizing nozzle, but a positive pressure environment is formed in the spraying process, so that steam is easy to accumulate and block and escape out of the steam collecting cover; thirdly, a method of heightening a chimney is adopted, and the method only improves certain whitening smoke diffusion capacity, and cannot effectively collect condensed water and reduce pollution influence on surrounding environment.
In view of the disadvantages and limitations of the prior measures, it is very necessary to develop a device for recovering and treating the blast furnace slag steam and reducing the whitening phenomenon of the chimney effluent.
Disclosure of Invention
The invention aims to solve the technical problem of providing a chimney recovery device of a punching tower for treating water vapor by blast furnace slag, which can eliminate the phenomenon of whitening chimney emissions, reduce the influence of the water vapor discharged in the blast furnace ironmaking slag treatment process on the environment and reduce the water resource consumption.
The technical scheme for solving the technical problems is as follows:
the utility model provides a blast furnace slag handles punching tower chimney recovery unit of vapor, it includes the gas collecting channel, the lower extreme of gas collecting channel is installed in the punching tower export, the upper end of gas collecting channel is connected with the lower part of chimney, the improvement wherein, install jet nozzle and jet fan in the gas collecting channel, the jet nozzle is towards the upper end of gas collecting channel, the jet fan is connected with the jet nozzle, install the diffuser in the lower part of chimney, the water catch bowl is installed to the top of diffuser, the water catch bowl is connected with the water quenching slag flushing water tank through the wet return, the annular water curtain generator is installed to the top of water catch bowl, annular water curtain generator is connected with the delivery pipe, annular water curtain generator is spiral pipe spiral structure, the spiral pipe spirals along the circumference of chimney of inner wall around the chimney, spiral pipe circumference equipartition has the nozzle of horizontal direction, the nozzle is towards the vertical central axis of chimney, gas-liquid separator is installed to the top of annular water curtain generator.
According to the chimney recovery device of the flushing tower for treating the water vapor by the blast furnace slag, the diffuser is a cylinder with unequal diameters, the cylinder of the diffuser is vertically arranged, the diameter of the middle section of the cylinder of the diffuser is smaller than that of the sections at two ends, and the circumferential wall of the cylinder of the diffuser is a smooth circumferential curved surface which continuously changes.
Above-mentioned blast furnace slag handles tower chimney recovery unit that dashes of vapor, the gas-liquid separation ware comprises support and liquid condensation net, and the support periphery is the ring, and the ring external diameter of support and the internal diameter phase-match of chimney, the inside groined type skeleton that has been arranged of ring, and it has a plurality of horizontally vice support horizontal poles to distribute along groined type skeleton vertically and horizontally, and the horizontal pole is latticed connection, and liquid condensation net is metal woven mesh, and liquid condensation net lays on the support that the gas-liquid separation ware level is installed and is stretched out on the chimney inner wall.
According to the chimney recovery device of the flushing tower for treating the water vapor by the blast furnace slag, the jet nozzle is arranged on the vertical central line of the bottom of the chimney, and the gravity automatic water drain valve is arranged at the bottom of the jet nozzle.
The beneficial effects of the invention are as follows:
the jet nozzle and the jet fan increase the fluid kinetic energy of the water vapor, and improve the collection capacity of the vapor collecting hood and the chimney on the water vapor; the multi-layer annular water curtain generated by the annular water curtain generator can collide with the rising water vapor, so that the water vapor is rapidly condensed; the net structure of the gas-liquid separator can adsorb and collect water mist particles, and the collected and condensed water drops drop by gravity, so that the gas-liquid two-phase body containing water is further separated; the backwater generated in condensation and gas-liquid separation can be recycled, so that the waste of water resources is reduced.
The invention has simple structure, convenient use and good effect, and forms a complete technical scheme of water vapor emission treatment through the combined treatment of jet driving, water mist condensation and gas-liquid separation and adsorption. The invention can reduce or eliminate the emission of harmful substances such as hydrogen sulfide, sulfur dioxide and the like along with the steam, so that the pollutants form internal circulation, the outward diffusion of the steam is prevented from forming local acid rain, the surrounding structures are corroded by the acid steam, the surrounding environment is influenced, and great social benefits can be generated. The invention can effectively utilize the water recovered from the water vapor, reduce the amount of new water replenished in the water vapor treatment process, obviously save water resources and reduce production cost.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The figures are labeled as follows: the device comprises a punching tower outlet 1, a jet fan 2, a jet nozzle 3, a gravity automatic water drain valve 4, a steam collecting hood 5, a water return pipe 6, a water supply pipe 7, a diffuser 8, a water collecting tank 9, an annular water curtain generator 10, a gas-liquid separator 11 and a chimney 12.
Detailed Description
The invention is composed of a gas collecting hood 5, a jet fan 2, a jet nozzle 3, a gravity automatic water drain valve 4, a water return pipe 6, a water supply pipe 7, a diffuser 8, a water collecting tank 9, an annular water curtain generator 10 and a gas-liquid separator 11.
The lower end of the gas-collecting hood 5 is shown mounted at the outlet 1 of the punching tower, and the upper end of the gas-collecting hood 5 is connected to the lower part of the chimney 12. The water vapor in the purge column is discharged from the chimney 12 through the hood 5. The gas collecting hood 5 seals the space between the outlet of the punching tower and the chimney 12, and collects the water vapor generated in the water quenching slag treatment process. A jet nozzle 3 is arranged on a vertical central line at the bottom of a chimney 12 in the gas collecting hood 5, and the jet nozzle 3 faces to an outlet of the chimney 12;
in the figure, a jet nozzle 3 and a jet fan 2 are arranged in a gas collecting hood 5, the jet fan 2 is connected with the jet nozzle 3, the jet nozzle 3 is arranged on a vertical central line at the bottom of a chimney 12, and the jet nozzle 3 faces to the upper end of the gas collecting hood 5. The jet fan 2 provides fluid power and is sprayed out by the jet nozzle 3, and the fluid power is mixed with steam generated by water quenching slag through a mixing chamber formed at the bottom of the gas collecting hood 5, the punching tower outlet 1 and the chimney 12 and flows upwards, and the flow force provided by the jet fan 2 and the natural lifting force of the chimney 12 jointly convey the steam to the top of the chimney 12.
In the running process of the equipment, the flow rate of the gas output by the jet fan 2 is regulated according to the steam quantity generated in the water quenching slag flushing process, so that the space of the gas collecting hood 5 forms micro negative pressure to prevent steam from escaping.
In order to avoid that condensed water blocks the flow channels of the jet nozzle 3 and the jet fan 2, a gravity automatic water drain valve 4 is arranged at the bottom of the jet nozzle 3.
In the figure, a diffuser 8 is installed at the lower part of a chimney 12, the diffuser 8 is a cylinder with unequal diameters, the cylinder of the diffuser 8 is vertically arranged, the diameter of the middle section of the cylinder of the diffuser 8 is smaller than the diameter of the sections at two ends, and the circumferential wall of the cylinder of the diffuser 8 is a smooth circumferential curved surface which continuously changes. The kinetic energy generated by the process that the fluid is ejected through the jet nozzle 3 and enters the diffuser 8 at high speed is utilized to suck, mix and accelerate the steam in the space between the jet nozzle 3 and the diffuser 8, and then the steam is discharged from the outlet section of the diffuser 8 to the far end of the chimney 12.
In the figure, a water collecting tank 9 is arranged above the diffuser 8, and the water collecting tank 9 is connected with a water quenching slag flushing tank through a water return pipe 6. The condensed water above the water collecting tank 9 can be recycled after falling into the water collecting tank 9.
An annular water curtain generator 10 is shown mounted above the water collection sump 9. The annular water curtain generator 10 is of a spiral pipe spiral structure, the spiral pipe spirals around the circumference of the chimney 12 along the inner wall of the chimney 12, nozzles in the horizontal direction are uniformly distributed on the circumference of the spiral pipe, the nozzles face the vertical central axis of the chimney 12, and the annular water curtain generator 10 is connected with the water supply pipe 7. When the water curtain generator is used, fresh water introduced by the water supply pipe 7 is sprayed to the vertical center line of the chimney 12 in the horizontal direction through the nozzles distributed on the annular water curtain generator 10 to form an extremely thin annular water curtain, most of water vapor rising along with the chimney 12 is impacted continuously by the water curtain in the rising process, the water vapor is condensed under the impact of the water curtain, condensed water drops into the water collecting tank 9 below, and the condensed water drops into the water quenching slag flushing tank through the water return pipe 6 to form internal circulation.
The amount of water for condensation of the annular water curtain generator 10 is smaller than the amount of water discharged from the chimney 12 by the water vapor when the recovery device is not used, so that the amount of fresh water supplied from the water supply pipe 7 is not increased. In the operation process, the flow of the water supply pipe 7 is regulated to ensure that the water curtain formed by the annular water curtain generator 10 is uniform and continuous so as to achieve the optimal effect of reducing the whitening of the chimney discharge of the slag treatment and punching tower.
The figure shows that a gas-liquid separator 11 is installed above the annular water curtain generator 10. The gas-liquid separator 11 comprises a bracket and a liquid condensing net, wherein the periphery of the bracket is in a circular ring shape, the outer diameter of the circular ring of the bracket is matched with the inner diameter of a chimney, a groined-shaped framework is arranged inside the circular ring, a plurality of horizontal auxiliary supporting cross bars are distributed along the longitudinal and transverse directions of the groined-shaped framework, the cross bars are connected in a grid shape, the liquid condensing net is a metal woven net, and the liquid condensing net is paved on the bracket. The gas-liquid separator is horizontally arranged on a support extending out of the inner wall of the chimney.
The metal woven liquid condensing net provides conditions for adsorbing and condensing water mist particles, water vapor rises to contact with the metal net and condense into water drops, the condensed water drops fall into the chimney 12 by gravity after being condensed, the water-containing gas-liquid two-phase body is further separated, and the separated gas is discharged to the atmosphere from the chimney 12.
In the running process of the equipment, the gas flow output by the jet fan 2 is regulated according to the steam quantity generated in the water quenching slag flushing process, so that the optimal pumping effect is achieved, the space of the steam collecting cover 5 forms micro negative pressure, and steam is prevented from escaping.
In the operation process, the water curtain formed by the annular water curtain generator 10 is uniform and continuous by adjusting the flow of the water supply pipe 7, so that the optimal effect of reducing the whitening of the chimney discharge of the slag treatment punching tower is achieved.
One embodiment of the invention is as follows:
the model number of the jet fan 2 is 9-19D-22 Kw;
the diameter of the jet nozzle 3 is 300mm;
the model of the gravity automatic water drain valve 4 is CS41N-10P-100;
the height of the diffuser 8 is 3500mm, the diameter of the large diameter end is 2200mm, and the middle small diameter is 1500mm;
the diameter of the spiral pipe of the annular water curtain generator 10 is 75mm, the spiral pipe spirals three layers around the circumference of the chimney 12 along the inner wall of the chimney 12, the distance is 150mm, the circumference of the spiral pipe is uniformly distributed with nozzles in the horizontal direction, and the diameter of the nozzles is 1mm;
the metal wires of the metal net of the gas-liquid separator 11 are stainless steel wires, the diameter of the stainless steel wires is 1mm, the aperture is 1mm multiplied by 1mm, and three layers are alternately overlapped and laid on the bracket at intervals of 3mm and 45 degrees.
Claims (1)
1. The utility model provides a blast furnace slag handles tower chimney recovery unit that dashes of vapor, it includes gas collecting channel (5), and the lower extreme of gas collecting channel (5) is installed in punching tower export (1), and the upper end of gas collecting channel (5) is connected with the lower part of chimney (12), its characterized in that: a jet nozzle (3) and a jet fan (2) are arranged in a gas collecting hood (5), the jet nozzle (3) faces the upper end of the gas collecting hood (5), the jet fan (2) is connected with the jet nozzle (3), a diffuser (8) is arranged at the lower part of the chimney (12), a water collecting tank (9) is arranged above the diffuser (8), the water collecting tank (9) is connected with a water quenching slag flushing water tank through a water return pipe (6), an annular water curtain generator (10) is arranged above the water collecting tank (9), the annular water curtain generator (10) is connected with a water supply pipe (7), the annular water curtain generator (10) is of a spiral pipe spiral structure, the spiral pipe spirals around the circumference of the chimney (12) along the inner wall of the chimney (12), the circumference of the spiral pipe is uniformly provided with nozzles in the horizontal direction, and the nozzles face the vertical central axis of the chimney (12), and a gas-liquid separator (11) is arranged above the annular water curtain generator (10); the diffuser (8) is a cylinder with unequal diameters, the cylinder of the diffuser (8) is vertically arranged, the diameter of the middle section of the cylinder of the diffuser (8) is smaller than that of the sections at the two ends, and the circumferential wall of the cylinder of the diffuser (8) is a smooth circumferential curved surface which continuously changes; the jet nozzle (3) is arranged on a vertical central line at the bottom of the chimney (12), and a gravity automatic water drain valve (4) is arranged at the bottom of the jet nozzle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237737.XA CN109351101B (en) | 2018-10-23 | 2018-10-23 | Chimney recovery device of flushing tower for treating water vapor by blast furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237737.XA CN109351101B (en) | 2018-10-23 | 2018-10-23 | Chimney recovery device of flushing tower for treating water vapor by blast furnace slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109351101A CN109351101A (en) | 2019-02-19 |
| CN109351101B true CN109351101B (en) | 2024-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811237737.XA Active CN109351101B (en) | 2018-10-23 | 2018-10-23 | Chimney recovery device of flushing tower for treating water vapor by blast furnace slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109351101B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113913565B (en) * | 2021-10-13 | 2023-08-15 | 马钢集团设计研究院有限责任公司 | System and method for recycling steam of slag flushing and filtering pool of blast furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190807094A (en) * | 1908-03-31 | 1908-07-09 | George Clark Richards | Improvements in Apparatus for Condensing Fumes, Vapours and the like. |
| CN102954706A (en) * | 2011-08-22 | 2013-03-06 | 吴金华 | Cocurrent and countercurrent jet compound hyperbolic cooling tower |
| CN204490902U (en) * | 2015-01-22 | 2015-07-22 | 刘一丹 | A kind of clean rapid hardening formula slag treatment equipment |
| CN108261842A (en) * | 2018-01-10 | 2018-07-10 | 山东国舜建设集团有限公司 | A kind of cooling condensation and dewatering integrated elimination " white cigarette " method |
| CN108295633A (en) * | 2018-03-13 | 2018-07-20 | 中国华电科工集团有限公司 | A kind of device and method for heat-engine plant desulfurized tower loop slurry cooling eliminating white smoke |
| CN209362112U (en) * | 2018-10-23 | 2019-09-10 | 唐山钢铁集团有限责任公司 | A kind of punching tower chimney recyclable device of blast furnace Slag treatment vapor |
-
2018
- 2018-10-23 CN CN201811237737.XA patent/CN109351101B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190807094A (en) * | 1908-03-31 | 1908-07-09 | George Clark Richards | Improvements in Apparatus for Condensing Fumes, Vapours and the like. |
| CN102954706A (en) * | 2011-08-22 | 2013-03-06 | 吴金华 | Cocurrent and countercurrent jet compound hyperbolic cooling tower |
| CN204490902U (en) * | 2015-01-22 | 2015-07-22 | 刘一丹 | A kind of clean rapid hardening formula slag treatment equipment |
| CN108261842A (en) * | 2018-01-10 | 2018-07-10 | 山东国舜建设集团有限公司 | A kind of cooling condensation and dewatering integrated elimination " white cigarette " method |
| CN108295633A (en) * | 2018-03-13 | 2018-07-20 | 中国华电科工集团有限公司 | A kind of device and method for heat-engine plant desulfurized tower loop slurry cooling eliminating white smoke |
| CN209362112U (en) * | 2018-10-23 | 2019-09-10 | 唐山钢铁集团有限责任公司 | A kind of punching tower chimney recyclable device of blast furnace Slag treatment vapor |
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| CN109351101A (en) | 2019-02-19 |
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