CN221156058U - Desulfurization, denitrification and dust removal device for blast furnace gas - Google Patents
Desulfurization, denitrification and dust removal device for blast furnace gas Download PDFInfo
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- CN221156058U CN221156058U CN202322894485.0U CN202322894485U CN221156058U CN 221156058 U CN221156058 U CN 221156058U CN 202322894485 U CN202322894485 U CN 202322894485U CN 221156058 U CN221156058 U CN 221156058U
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- cavity
- dust
- denitrification
- dust removal
- blast furnace
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- 239000000428 dust Substances 0.000 title claims abstract description 119
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 23
- 230000023556 desulfurization Effects 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 32
- 239000011593 sulfur Substances 0.000 claims abstract description 32
- 238000003756 stirring Methods 0.000 claims abstract description 29
- 239000007787 solid Substances 0.000 claims abstract description 22
- 239000003463 adsorbent Substances 0.000 claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000001502 supplementing effect Effects 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 39
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 230000009471 action Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 8
- 239000003034 coal gas Substances 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 208000018569 Respiratory Tract disease Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to the technical field of desulfurization, denitrification and dust removal of blast furnace gas, in particular to a desulfurization, denitrification and dust removal device of blast furnace gas, which comprises a dust removal cavity, wherein an air inlet is arranged on the left side of the dust removal cavity, a plurality of sprayers are arranged on the top of the dust removal cavity, a water tank is arranged at the bottom of the dust removal cavity, a sulfur removal pipe and a denitrification cavity are arranged on the right side of the dust removal cavity, a sealing door is hinged to the top of the sulfur removal pipe, a stirring shaft is arranged in the denitrification cavity, and an air outlet is arranged on the right side of the denitrification cavity. According to the blast furnace gas desulfurization and denitrification dust removal device, the blast furnace gas is pre-dedusted through the dust removal cavity, large dust is downwards concentrated in the dust collection barrel under the action of gravity through the inclined bottom of the dust removal cavity, so that uniform cleaning is convenient, clear water is pumped by the water pump for recycling after being filtered by the filter plate in the dust collection barrel, and water resources are saved; the sealing door at the top of the sulfur removal pipe can be opened, so that the internal solid adsorbent can be conveniently replaced, the stirring shaft and the stirring sheet stir the SCR catalyst in the denitration cavity, and the reaction efficiency of the SCR catalyst and nitrogen oxides in blast furnace gas is improved.
Description
Technical Field
The utility model relates to the technical field of desulfurization, denitrification and dust removal of blast furnace gas, in particular to a desulfurization, denitrification and dust removal device of blast furnace gas.
Background
The blast furnace gas is a byproduct combustible gas in the blast furnace ironmaking production process, the ash content is large, the ash content of part of the blast furnace gas can reach 60-80 g/Nm3, and the blast furnace gas contains a large amount of sulfur dioxide, nitrogen oxides and other atmospheric pollutants, which are main sources of environmental pollution problems such as urban acid rain, photochemical smog and the like, and sulfur dioxide and nitrogen oxides are extremely harmful to human health, and the respiratory tract is stimulated along with the inhalation of human bodies, so that the incidence of respiratory tract diseases is improved, and in order to reduce the overall emission of the atmospheric pollutants, reduce the formation of atmospheric acidification and photochemical smog, improve the air quality of human life, reduce the possibility of illness caused by the influence of the atmospheric pollutants, and need desulfurization, denitrification and dust fall treatment before the blast furnace gas is discharged.
The desulfurization, denitrification and dust removal device for blast furnace gas in the present stage has better dust removal effect, but solid reactants generated in the reaction process can not be collected intensively, and the long-term accumulation in the device is easy to cause the reduction of desulfurization, denitrification efficiency.
In order to solve the problems, the improvement is made, and a desulfurization, denitrification and dust removal device for blast furnace gas is provided.
Disclosure of utility model
In order to solve the technical problems, the utility model provides the following technical scheme:
The utility model provides a blast furnace gas desulfurization and denitrification dust removal device, which comprises a dust removal cavity, wherein an air inlet is arranged on the left side of the dust removal cavity, a plurality of sprayers are arranged on the top of the dust removal cavity, the bottom of the dust removal cavity is inclined, a dust collection barrel is connected with the bottom of the dust removal cavity through threads, a water tank is arranged at the bottom of the dust removal cavity, a sulfur removal pipe and a denitration cavity are arranged on the right side of the dust removal cavity, a sealing door is hinged to the top of the sulfur removal pipe, a stirring shaft is arranged in the denitration cavity, and an air outlet is arranged on the right side of the denitration cavity.
As a preferable technical scheme of the utility model, the dust collection barrel is in threaded connection with the dust collection cavity, a waterproof ring is arranged at the joint of the dust collection barrel and the dust collection cavity, a filter disc is arranged in the dust collection barrel, and a valve is arranged at the bottom of the dust collection barrel.
As a preferable technical scheme of the utility model, the bottom of the dust collection barrel is communicated with the water tank, the bottom of the water tank is communicated with the water supplementing pipe, the water supplementing pipe is fixedly arranged on the outer surface of the dust collection cavity (1), the top of the water supplementing pipe is provided with the water pump, and the other end of the water supplementing pipe is communicated with the sprayer.
As an optimized technical scheme of the utility model, the sulfur removal pipe is fixedly arranged on the right side of the dust removal cavity, the pipe orifice of the sulfur removal pipe is higher than the air inlet, a solid adsorbent is placed in the sulfur removal pipe, and a sealing ring is arranged at the joint of the sealing door and the sulfur removal pipe.
As a preferable technical scheme of the utility model, the tail end of the sulfur removal pipe is provided with a communicating pipe, the communicating pipe extends downwards to the bottom of the denitration cavity, the inside of the denitration cavity is provided with an SCR catalyst, the outside of the denitration cavity is provided with a liquid inlet, the bottom of the denitration cavity is provided with a liquid outlet, and the liquid outlet is provided with a valve.
As a preferable technical scheme of the utility model, a rotating motor is arranged at the top of the denitration cavity, a rotating shaft of the rotating motor is fixedly connected with a stirring shaft in a coaxial way, the stirring shaft is rotationally connected with the top of the denitration cavity, a sealing ring is arranged at the joint of the stirring shaft and the denitration cavity, and a plurality of stirring sheets are arranged on the surface of the stirring shaft.
As a preferable technical scheme of the utility model, two ends of the sulfur removal pipe are provided with a plurality of vent holes, the sulfur removal pipe is communicated with the dust removal cavity and the denitration cavity, and the diameter of the vent holes is smaller than the particle diameter of the solid adsorbent.
The beneficial effects of the utility model are as follows: according to the blast furnace gas desulfurization and denitrification dust removal device, the blast furnace gas is pre-dedusted through the dust removal cavity, large dust is downwards concentrated in the dust collection barrel under the action of gravity through the inclined bottom of the dust removal cavity, so that uniform cleaning is convenient, clear water is pumped by the water pump for recycling after being filtered by the filter plate in the dust collection barrel, and water resources are saved; the sealing door at the top of the sulfur removal pipe can be opened, so that the internal solid adsorbent is convenient to replace, the adsorption effect of the solid adsorbent is prevented from being reduced along with the time increase, the stirring shaft and the stirring piece stir the SCR catalyst in the denitration cavity, and the reaction efficiency of the SCR catalyst and nitrogen oxides in blast furnace gas is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic elevational cross-sectional view of the present utility model;
In the figure: 1. a dust removal cavity; 2. a sulfur removal pipe; 3. a denitration cavity; 4. a rotating electric machine; 5. a communicating pipe; 6. a stirring shaft; 7. stirring sheets; 8. a sprayer; 9. a solid adsorbent; 10. a liquid inlet; 11. an air inlet; 12. an air outlet; 13. a liquid outlet; 14. a dust collection barrel; 15. a filter sheet; 16. a water tank; 17. a water pump; 18. and a water supplementing pipe.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
Examples: as shown in figure 1, the desulfurization, denitrification and dust removal device for the blast furnace gas comprises a dust removal cavity 1, wherein an air inlet 11 is arranged on the left side of the dust removal cavity 1, the blast furnace gas enters the dust removal cavity 1 through the air inlet 11, a plurality of sprayers 8 are arranged on the top of the dust removal cavity 1, the sprayers 8 spray water mist to moisten dust in the blast furnace gas so that the dust drops to the bottom of the dust removal cavity 1 along with water, the bottom of the dust removal cavity 1 is inclined, a dust collection barrel 14 is connected with the bottom of the dust removal cavity 1 in a threaded manner, and dust dipping water can slide into the dust collection barrel 14 below under the action of gravity.
The water tank 16 is installed to dust removal chamber 1 bottom, and sulphur removal pipe 2 and denitration chamber 3 are installed on dust removal chamber 1 right side, and sulphur removal pipe 2 top articulates there is sealed door, is equipped with (mixing) shaft 6 in the denitration chamber 3, and gas outlet 12 is installed on denitration chamber 3 right side, and blast furnace gas is discharged from gas outlet 12 after the whole process of accomplishing SOx/NOx control dust removal through dust removal chamber 1, sulphur removal pipe 2 and denitration chamber 3 in proper order.
The dust collection barrel 14 is in threaded connection with the dust collection cavity 1, a waterproof ring is arranged at the joint of the dust collection barrel 14 and the dust collection cavity 1, the filter disc 15 is arranged in the dust collection barrel 14, the valve is arranged at the bottom of the dust collection barrel 14, dust is concentrated into the dust collection barrel 14 and is blocked by the filter disc 15, the valve controls the flow rate of water flow, the inside of the dust collection cavity 1 is guaranteed to have water all the time, the water level is always lower than the air inlet 11, the air inlet 11 is not influenced when the water seal is formed, the dust collection barrel 14 is unscrewed after the dust collection barrel 14 is filled, and the filter disc 15 is cleaned and replaced.
The bottom of the dust collection barrel 14 is communicated with the water tank 16, the bottom of the water tank 16 is communicated with the water supplementing pipe 18, the water supplementing pipe 18 is fixedly arranged on the outer surface of the dust collection cavity 1, the water pump 17 is arranged at the top of the water supplementing pipe 18, the other end of the water supplementing pipe 18 is communicated with the sprayer 8, and the clean water in the water tank is pumped by the water pump 17 to be recycled by the sprayer 8.
The sulfur removal pipe 2 is fixedly arranged on the right side of the dust removal cavity 1, and because the density of coal gas is lower than that of air, the pipe orifice of the sulfur removal pipe 2 is higher than the air inlet 11, the solid adsorbent 9 is arranged in the sulfur removal pipe 2, the coal gas enters the sulfur removal pipe 2 to react with the solid adsorbent, the solid adsorbent 9 reacts with sulfur dioxide in the coal gas to generate solid waste, the solid waste remains in the solid adsorbent 9, a sealing ring is arranged at the joint of the sealing door and the sulfur removal pipe 2, and the reaction efficiency of the solid adsorbent 9 can be maintained by periodically opening the sealing door to replace the solid adsorbent 9.
The communicating pipe 5 is installed at the tail end of the sulfur removal pipe 2, the communicating pipe 5 downwards extends to the bottom of the denitration cavity 3, the SCR catalyst is arranged in the denitration cavity 3, the communicating pipe 5 extends to the bottom of the SCR catalyst, gas reacts with the gas in the process of passing through the SCR catalyst from bottom to top, the liquid inlet 10 is installed on the outer side of the denitration cavity 3 and is convenient for supplementing the SCR catalyst, the liquid outlet 13 is installed at the bottom of the denitration cavity 3, a valve is installed on the liquid outlet 13, the reaction efficiency of the SCR catalyst needs to be replaced frequently for guaranteeing, solid reactants generated by the reaction of the SCR catalyst and the gas can be accumulated at the bottom of the denitration cavity 3, and the SCR catalyst and the solid reactants can be discharged together by opening the valve.
The rotating electrical machines 4 are installed at the top of the denitration chamber 3, the rotation shaft of the rotating electrical machines 4 is fixedly connected with the stirring shaft 6 coaxially, the stirring shaft 6 is rotatably connected with the top of the denitration chamber 3, a sealing ring is installed at the joint of the stirring shaft 6 and the denitration chamber 3, a plurality of stirring blades 7 are installed on the surface of the stirring shaft 6, and the rotating electrical machines 4 drive the stirring shaft 6 to stir the SCR catalyst to improve the reaction efficiency of the SCR catalyst and the coal gas, so that the reaction binding rate is improved.
The sulfur removal pipe 2 both ends have all been seted up a plurality of air vents, and sulfur removal pipe 2 all communicates with dust removal chamber 1 and denitration chamber 3, and the air vent diameter is less than the particle diameter of solid adsorbent 9, avoids solid adsorbent 9 to drop inside dust removal chamber 1 and denitration chamber 3.
Working principle: when the blast furnace gas desulfurization and denitrification dust removal device is used, blast furnace gas enters a dust removal cavity 1 through an air inlet 11, a sprayer 8 sprays water mist to moisten dust in the blast furnace gas so that the dust falls into the bottom of the dust removal cavity 1 along with water and slides into a dust collection barrel 14 below, the dust is concentrated into the dust collection barrel 14 and is blocked by a filter sheet 15, a valve controls the flow rate of water flow, water is always reserved in the dust removal cavity 1, the water level is always lower than the air inlet 11, the air inlet 11 is not influenced when a water seal is formed, the dust collection barrel 14 is unscrewed after the dust collection barrel 14 is filled up to clean the dust therein and replace the filter sheet 15, and clean water in a water tank extracted by a water pump 17 flows to the sprayer 8 through a water supplementing pipe 18 for recycling;
The gas enters the sulfur removal pipe 2 to react with the solid adsorbent, the solid adsorbent 9 reacts with sulfur dioxide in the gas to generate solid waste, the solid waste remains in the solid adsorbent 9, the reacted blast furnace gas downwards reaches the bottom of the denitration cavity 3 from the communicating pipe 5, the SCR catalyst is arranged in the denitration cavity 3, the blast furnace gas fully reacts with the SCR catalyst in the process of floating from the bottom to the top of the liquid, meanwhile, the rotating motor 4 drives the stirring shaft 6 to stir the SCR catalyst to lift the contact area between the blast furnace gas and the gas, the reaction binding rate is improved, and the blast furnace gas floating out of the SCR catalyst is discharged from the gas outlet 12 after the purification of desulfurization, denitration and dust removal is completed.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The utility model provides a blast furnace gas desulfurization denitration dust collector, includes dust chamber (1), its characterized in that, air inlet (11) are installed in dust chamber (1) left side, a plurality of sprayers (8) are installed at dust chamber (1) top, dust chamber (1) bottom slope, dust chamber (1) bottom threaded connection has dust collection barrel (14), water tank (16) are installed to dust chamber (1) bottom, sulfur removal pipe (2) and denitration chamber (3) are installed on dust chamber (1) right side, sulfur removal pipe (2) top articulates there is sealing door, be equipped with (mixing) shaft (6) in denitration chamber (3), gas outlet (12) are installed on denitration chamber (3) right side.
2. The blast furnace gas desulfurization and denitrification dust removal device according to claim 1, wherein the dust collection barrel (14) is in threaded connection with the dust collection cavity (1), a waterproof ring is arranged at the joint of the dust collection barrel (14) and the dust collection cavity (1), a filter disc (15) is arranged in the dust collection barrel (14), and a valve is arranged at the bottom of the dust collection barrel (14).
3. The blast furnace gas desulfurization and denitrification dust removal device according to claim 1, wherein the bottom of the dust collection barrel (14) is communicated with the water tank (16), the bottom of the water tank (16) is communicated with the water supplementing pipe (18), the water supplementing pipe (18) is fixedly arranged on the outer surface of the dust collection cavity (1), the water pump (17) is arranged at the top of the water supplementing pipe (18), and the other end of the water supplementing pipe (18) is communicated with the sprayer (8).
4. The blast furnace gas desulfurization and denitrification dust removal device according to claim 1, wherein the sulfur removal pipe (2) is fixedly arranged on the right side of the dust removal cavity (1), the pipe orifice of the sulfur removal pipe (2) is higher than the air inlet (11), a solid adsorbent (9) is placed in the sulfur removal pipe (2), and a sealing ring is arranged at the joint of the sealing door and the sulfur removal pipe (2).
5. The blast furnace gas desulfurization and denitrification dust removal device according to claim 1, wherein the tail end of the sulfur removal pipe (2) is provided with a communicating pipe (5), the communicating pipe (5) extends downwards to the bottom of the denitrification cavity (3), an SCR catalyst is arranged in the denitrification cavity (3), a liquid inlet (10) is arranged on the outer side of the denitrification cavity (3), the bottom of the denitrification cavity (3) is provided with a liquid outlet (13), and a valve is arranged on the liquid outlet (13).
6. The blast furnace gas desulfurization and denitrification dust removal device according to claim 1, wherein a rotating motor (4) is installed at the top of the denitrification cavity (3), a rotating shaft of the rotating motor (4) is fixedly connected with a stirring shaft (6) coaxially, the stirring shaft (6) is rotatably connected with the top of the denitrification cavity (3), a sealing ring is installed at the joint of the stirring shaft (6) and the denitrification cavity (3), and a plurality of stirring sheets (7) are installed on the surface of the stirring shaft (6).
7. The blast furnace gas desulfurization and denitrification dust removal device according to claim 1, wherein a plurality of vent holes are formed in two ends of the sulfur removal pipe (2), the sulfur removal pipe (2) is communicated with the dust removal cavity (1) and the denitrification cavity (3), and the diameter of each vent hole is smaller than the particle diameter of the solid adsorbent (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322894485.0U CN221156058U (en) | 2023-10-26 | 2023-10-26 | Desulfurization, denitrification and dust removal device for blast furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322894485.0U CN221156058U (en) | 2023-10-26 | 2023-10-26 | Desulfurization, denitrification and dust removal device for blast furnace gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221156058U true CN221156058U (en) | 2024-06-18 |
Family
ID=91533697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322894485.0U Active CN221156058U (en) | 2023-10-26 | 2023-10-26 | Desulfurization, denitrification and dust removal device for blast furnace gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221156058U (en) |
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2023
- 2023-10-26 CN CN202322894485.0U patent/CN221156058U/en active Active
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