CN111593164A - Converter primary flue gas ultra-clean dust pelletizing system - Google Patents
Converter primary flue gas ultra-clean dust pelletizing system Download PDFInfo
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- CN111593164A CN111593164A CN202010494260.4A CN202010494260A CN111593164A CN 111593164 A CN111593164 A CN 111593164A CN 202010494260 A CN202010494260 A CN 202010494260A CN 111593164 A CN111593164 A CN 111593164A
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- flue gas
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
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- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
- Chimneys And Flues (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses an ultra-clean dust removal system for primary flue gas of a converter, and belongs to the technical field of environmental protection and emission reduction. The device comprises an evaporative cooling tower, wherein a coarse ash hopper is arranged at the bottom of the evaporative cooling tower, the output end of the coarse ash hopper is connected with a high-voltage electrostatic dust collector through a pipeline, the output end of the high-voltage electrostatic dust collector is connected with an axial flow fan, the output end of the axial flow fan is connected with a cylindrical filtering dust collector through a pipeline, and the output end of the cylindrical filtering dust collector is sequentially connected with a recovery cup valve and a diffusion cup valve through pipelines. The invention solves the problem of ultra-clean emission, can stably realize the ultra-low emission and recovery dust concentration of converter gas and flue gas with dust content not more than 10mg/Nm3, can simultaneously treat the dust concentration of the flue gas in two paths of emission and recovery, has good safety, no secondary pollution and high efficiency, can meet the requirement of ultra-low emission and environmental protection, and has excellent comprehensive environmental protection performance.
Description
Technical Field
The invention relates to the technical field of environmental protection and emission reduction, in particular to a converter primary flue gas ultra-clean dust removal system.
Background
At present, the environmental protection requirement is more and more strict, and the difficulty of steel-making dust removal lies in the primary gas dust removal of the converter. In order to make the converter gas emission reach the standard, a converter gas dry dedusting technology (LT dry dedusting technology) is generally adopted, and the core fine dedusting equipment is a high-voltage electrostatic deduster. However, due to the periodicity of converter smelting, the fluctuation of flue gas is very large, and many places require to meet the requirement of ultra-clean emission, and the fine removal of the electrostatic dust collector is difficult to stably meet the requirement. The filter type dust collector has the advantages that the material selection and speed control are proper, the requirement of stable ultralow emission is easily met, the cylindrical filter type dust collector is arranged in front of the switching station, and the dust-containing problems of smoke emission and coal gas recovery are solved. The characteristics of each dust removal technology are combined to find a new one-step treatment process of converter gas, which is a new need for realizing the current ultra-low emission and environmental protection.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the defects and shortcomings in the prior art, the invention provides the converter primary flue gas ultra-clean dedusting system, which solves the problem of ultra-clean emission, can stably realize ultra-low emission and recovery of dust concentration of converter gas and flue gas with dust content not greater than 10mg/Nm3, can simultaneously treat and recover two paths of flue gas dust concentration, saves the trouble of secondary treatment of gas dust content of a converter gas cabinet, cannot cause secondary pollution, greatly reduces the temperature of flue gas after passing through a filter type deduster, effectively reduces the load of later cooling, and reduces the consumption of water.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention discloses an ultra-clean dust removal system for primary flue gas of a converter, which comprises an evaporative cooling tower, wherein a coarse ash bucket is arranged at the bottom of the evaporative cooling tower, the output end of the coarse ash bucket is connected with a pipeline, the output end of the pipeline is connected with a high-voltage electrostatic dust collector, the output end of the high-voltage electrostatic dust collector is connected with an axial flow fan through a pipeline, a silencer is arranged outside the axial flow fan, the output end of the axial flow fan is connected with a cylindrical filtering dust collector through a pipeline, the output end of the cylindrical filtering dust collector is sequentially connected with a recovery cup valve and a diffusion cup valve through pipelines, and the recovery cup valve and the diffusion cup valve are arranged in parallel.
Furthermore, explosion venting devices are arranged at the input port and the output port of the high-voltage electrostatic dust collector and the cylindrical filtering dust collector.
Furthermore, one end of the recycling cup valve is communicated with the rear gas cabinet of the cooling device, and one end of the diffusing cup valve is communicated with the chimney.
Furthermore, a silencer is arranged outside the axial flow fan.
Furthermore, the high-voltage electrostatic dust collector, the D axial flow gas fan, the silencer and the cylindrical filtering dust collector are all arranged in series.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention solves the problem of ultra-clean discharge, and can stably realize that the dust content of the gas and the flue gas of the converter is not more than 10mg/Nm3The ultralow emission and the recovery dust concentration can be treated simultaneously and the smoke dust concentration of two ways of diffusing and recovering, the trouble of secondary treatment of the coal gas dust in the converter gas chamber is saved, the secondary pollution can not be caused, the smoke temperature is greatly reduced after the filter type dust remover, the load of later cooling is effectively reduced, and the consumption of water is reduced.
Drawings
Fig. 1 is an overall structural view of the present invention.
In the figure: 1. an evaporative cooling tower; 2. a coarse ash hopper; 3. a pipeline; 4. a high-voltage electrostatic precipitator; 5. an axial flow fan; 6. a muffler; 7. a cylindrical filter dust collector; 8. a recovery cup valve; 9. a bleeding cup valve.
Detailed Description
The invention is further described with reference to the following figures and examples:
example 1
It can be seen from fig. 1 that the converter primary flue gas ultra-clean dust removal system of this embodiment, including evaporative cooling tower 1, evaporative cooling tower 1's bottom is provided with thick ash bucket 2, thick ash bucket 2's output is connected with pipeline 3, pipeline 3's output is connected with high-voltage electrostatic precipitator 4, high-voltage electrostatic precipitator 4's output is connected with axial fan 5 through pipeline 3, axial fan 5 adopts ID axial fan, axial fan 5's externally mounted has muffler 6, axial fan 5's output is connected with cylindrical filter dust collector 7 through pipeline 3, cylindrical filter dust collector 7's output has connected gradually through pipeline 3 and has retrieved cup valve 8 and diffuse cup valve 9, retrieve cup valve 8 and diffuse cup valve 9 and connect the setting in parallel.
One end of the recycling cup valve 8 is communicated with a rear air inlet cabinet of the cooling equipment, and one end of the diffusing cup valve 9 is communicated with a chimney.
The high-voltage electrostatic dust collector 4, the D axial flow gas fan 5, the silencer 6 and the cylindrical filtering dust collector 7 are all arranged in series, explosion venting devices are arranged at the input port and the output port of the high-voltage electrostatic dust collector 4 and the cylindrical filtering dust collector 7, and therefore the safety of the high-voltage electrostatic dust collector 4 and the cylindrical filtering dust collector 7 in the operation process is improved.
Compared with the prior dry dedusting LT system scheme, the technology of the invention has the following advantages:
the invention solves the problem of ultra-clean discharge, and can stably realize that the dust content of the gas and the flue gas of the converter is not more than 10mg/Nm3The ultralow emission and the recovery dust concentration break through the bottleneck of an LT dry method system, the dust concentration of the two paths of flue gas can be simultaneously processed, diffused and recovered, the trouble of secondary treatment of the dust in the gas of the converter gas cabinet is eliminated, secondary pollution is avoided, the flue gas temperature is greatly reduced after the filter type dust remover, the load of later-stage cooling is effectively reduced, and the consumption of water is reduced.
The cylindrical filtering dust remover 7 is arranged in front of the switching station, so that the problems of smoke emission and dust content of coal gas recovery are synchronously solved, the safety is good, no secondary pollution is caused, the efficiency is high, the requirement of ultra-low emission and environmental protection can be met, the dust removal efficiency is high, ultra-clean emission can be achieved, the coal gas of the coal gas inlet cabinet can be directly used by users, secondary treatment is not required, the safety is good, the water consumption is low, and the comprehensive environmental protection performance is excellent.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (5)
1. The utility model provides a converter primary flue gas ultra-clean dust pelletizing system, includes evaporative cooling tower (1), its characterized in that: the bottom of evaporative cooling tower (1) be provided with thick ash bucket (2), the output of thick ash bucket (2) is connected with pipeline (3), the output of pipeline (3) is connected with high-voltage electrostatic precipitator (4), the output of high-voltage electrostatic precipitator (4) be connected with axial fan (5) through pipeline (3), the output of axial fan (5) is connected with drum type filter dust remover (7) through pipeline (3), the output of drum type filter dust remover (7) connect gradually through pipeline (3) and retrieve cup valve (8) and diffuse cup valve (9), retrieve cup valve (8) and diffuse cup valve (9) parallel arrangement.
2. The converter primary flue gas ultra-clean dust removal system according to claim 1, characterized in that: and explosion venting devices are arranged at the input port and the output port of the high-voltage electrostatic dust collector (4) and the cylindrical filtering dust collector (7).
3. The converter primary flue gas ultra-clean dust removal system according to claim 1, characterized in that: one end of the recovery cup valve (8) is communicated with a rear air cabinet of the cooling device, and one end of the diffusion cup valve (9) is communicated with a chimney.
4. The converter primary flue gas ultra-clean dust removal system according to claim 1, characterized in that: and a silencer (6) is arranged outside the axial flow fan (5).
5. The ultra-clean dust removal system for the primary flue gas of the converter according to claim 4, characterized in that: the high-voltage electrostatic dust collector (4), the D axial flow gas fan (5), the silencer (6) and the cylindrical filtering dust collector (7) are all arranged in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010494260.4A CN111593164A (en) | 2020-06-03 | 2020-06-03 | Converter primary flue gas ultra-clean dust pelletizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010494260.4A CN111593164A (en) | 2020-06-03 | 2020-06-03 | Converter primary flue gas ultra-clean dust pelletizing system |
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| Publication Number | Publication Date |
|---|---|
| CN111593164A true CN111593164A (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010494260.4A Pending CN111593164A (en) | 2020-06-03 | 2020-06-03 | Converter primary flue gas ultra-clean dust pelletizing system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1428672A (en) * | 1964-03-07 | 1966-02-18 | Phoenix Rheinrohr Ag | Method and apparatus for cooling and preliminary cleaning of converter flue gases |
| CN102653806A (en) * | 2012-05-29 | 2012-09-05 | 江苏瑞帆环保装备股份有限公司 | Electric-bag combined converter gas dry cleaning and recovering system |
| CN107034335A (en) * | 2017-05-18 | 2017-08-11 | 中冶节能环保有限责任公司 | A kind of process system and method to ultra-clean dedusting of flue gas of converter |
| CN109929962A (en) * | 2019-04-24 | 2019-06-25 | 广州华鑫工程技术有限公司 | The ultra-clean cleaner of high temperature resistant and dust removal method for coal gas of steel-smelting revolving furnace |
-
2020
- 2020-06-03 CN CN202010494260.4A patent/CN111593164A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1428672A (en) * | 1964-03-07 | 1966-02-18 | Phoenix Rheinrohr Ag | Method and apparatus for cooling and preliminary cleaning of converter flue gases |
| CN102653806A (en) * | 2012-05-29 | 2012-09-05 | 江苏瑞帆环保装备股份有限公司 | Electric-bag combined converter gas dry cleaning and recovering system |
| CN107034335A (en) * | 2017-05-18 | 2017-08-11 | 中冶节能环保有限责任公司 | A kind of process system and method to ultra-clean dedusting of flue gas of converter |
| CN109929962A (en) * | 2019-04-24 | 2019-06-25 | 广州华鑫工程技术有限公司 | The ultra-clean cleaner of high temperature resistant and dust removal method for coal gas of steel-smelting revolving furnace |
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Application publication date: 20200828 |