CN104894329A - Wet purifying device for converter smoke and application method - Google Patents
Wet purifying device for converter smoke and application method Download PDFInfo
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- CN104894329A CN104894329A CN201510234012.5A CN201510234012A CN104894329A CN 104894329 A CN104894329 A CN 104894329A CN 201510234012 A CN201510234012 A CN 201510234012A CN 104894329 A CN104894329 A CN 104894329A
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- washing tower
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Abstract
The invention discloses a wet purifying device for converter smoke and an application method, and belongs to the technical field of converter smoke purification of steel and iron works. The device comprises a converter, a gasification cooling flue, a first-grade washing tower, a second-grade washing tower, a wet electric dust remover, a dust removing induced draft fan and a dispersing chimney, wherein the converter smoke enters the first-grade cooling tower by the gasification cooling flue to meet with cooling water sprayed into the first-grade cooling tower for transferring heat and mass, enters the second-grade cooling tower to meet with cooling water sprayed into the second-grade cooling tower for transferring heat and mass, and is blasted to the dispersing chimney by the induced draft fan for exhausting into atmosphere. The device has the advantages of removing dust in the smoke and achieving the national environment standard.
Description
Technical field
The invention belongs to Steel Plant's converter gas purification technical field, particularly a kind of device for converter gas wet purification and using method.
Background technology
Steel Plant's converter steelmaking is while work production, also create the gas being rich in the many dirt of CO high temperature in a large number, this part gas is referred to as converter gas, converter gas is one of important secondary energy during the Steel Plant of recoverable produce after purification, and this is for energy-saving and cost-reducing and improve atmospheric environment and play an important role.
Converter gas purification wet dust removal technique, flowchart process is that converter gas generates in converter, washing tower is entered from one-level washing tower top and the water coolant generation heat and mass sprayed into one-level washing tower therein after rising along gasification cooling flue, flue-gas temperature reduces, converter gas enters from secondary washing tower top again through transmission pipeline subsequently, then converter gas and the water coolant sprayed in secondary washing tower contact and heat and mass again, converter gas temperature reduces further, dust in flue gas is separated along with the reduction of converter gas temperature from flue gas, and enter into the sewage of washing tower.Converter gas after purification is under the attraction of dedusting fan, and enter in diffusing chimney via dedusting fan outlet, be finally discharged into air, the kind of dust of discharge reaches < 100mg/Nm
3environmental protection index requirement.There are the following problems for this processing method:
1., due to the enhancing of current national environmental protection dynamics, the dust content be discharged in air for converter gas improves further, by 100mg/Nm
3bring up to≤50mg/Nm
3.Therefore current converter gas wet dust removal technique does not reach state environmental emissioning standard.
2. the consumption of existing converter gas wet purification technique required electric power is large, and equipment attrition is serious, and the life-span is short, adds running cost.
Summary of the invention
The object of the present invention is to provide a kind of device for converter gas wet purification and using method, solve converter gas dust emission concentration high, the problem that the power consumption of purification process is large.
For a device for converter gas wet purification, comprise converter 1, gasification cooling flue 2, one-level washing tower 3, secondary washing tower 4, wet electrical dust precipitator 5, converter gas induced draft fan 6 and diffusing chimney 7; Gasification cooling flue 2 is directly over converter 1, and gasification cooling flue 2 is linked in sequence successively one-level washing tower 3, secondary washing tower 4, wet electrical dust precipitator 5, converter gas induced draft fan 6, diffusing chimney 7.
For a using method for the device of converter gas wet purification, concrete steps and parameter as follows:
1, the converter gas being rich in the many dust of CO high temperature that the molten iron phase reaction in the oxygen be blown in convertor steelmaking process and converter 1 generates, enters into one-level washing tower 3 through gasification cooling flue 2 and to meet with the water coolant spraying into one-level washing tower 3 and carry out heat and mass;
2, converter gas enters secondary washing tower 4 from one-level washing tower 3 and again carries out heat and mass with the water coolant sprayed in secondary washing tower 4;
3, secondary washing tower 4 converter gas has out reached gas state of saturation, and kind of dust reaches 300 ~ 400mg/Nm
3, this segment converter flue gas enters into wet electrical dust precipitator 5 subsequently, and converter gas electric precipitator 5 exit dustiness reaches≤50mg/Nm
3, meet the emission standard of national environmental protection converter gas dust content completely;
4, converter gas is sent to diffusing chimney 7 through converter gas induced draft fan 6 again and is discharged in air.
Wet electrical dust precipitator 5 is cylindrical, and diameter is pressed flue gas flow rate 0.8 ~ 1m/s and calculated.Power consumption is quite low, and the power consumption of saving after the secondary washing tower resistance of reduction can be used for completely to electric precipitator use, and also has surplus.
Wet electrical dust precipitator 5 length is 10m-30m, and entrance arranges three layers of air distribution plate, and outlet arranges fog drip gathering device.The processing method utilizing secondary washing tower resistance to reduce, also just reduces the speed of the dusty gas passed through in secondary washing tower and gas regulation element, directly alleviates the wearing and tearing of equipment, extends the work-ing life of equipment.
The invention has the advantages that: the temperature reducing converter gas, and the dust effectively removed in flue gas, reach the standard that National Environmental is relevant, meanwhile, its dedusting drag losses is reduced in secondary washing tower, impedance value is adjusted to 8kPa by 12kPa, it also reduces the power of dedusting id-motor.
Accompanying drawing explanation
Fig. 1 is device technique schematic diagram of the present invention.Wherein, converter 1, gasification cooling flue 2, one-level washing tower 3, secondary washing tower 4, wet electrical dust precipitator 5, converter gas induced draft fan 6, diffusing chimney 7.
Embodiment
Fig. 1 is specific embodiment of the invention method.
A kind of device for converter gas wet purification comprises: converter 1, gasification cooling flue 2, one-level washing tower 3, secondary washing tower 4, wet electrical dust precipitator 5, converter gas induced draft fan 6 and diffusing chimney 7; Gasification cooling flue 2 is positioned at directly over converter 1, and one-level washing tower 3, secondary washing tower 4, wet electrical dust precipitator 5, converter gas induced draft fan 6, diffusing chimney 7 are linked in sequence successively.
For a using method for the device of converter gas wet purification, concrete steps and parameter as follows:
1, the converter gas being rich in the many dust of CO high temperature that the molten iron phase reaction in the oxygen be blown in convertor steelmaking process and converter 1 generates, enters into one-level washing tower 3 through gasification cooling flue 2 and to meet with the water coolant spraying into one-level washing tower 3 and carry out heat and mass.
2, converter gas enters secondary washing tower 4 from one-level washing tower 3 and again carries out heat and mass with the water coolant sprayed in secondary washing tower 4.
3, secondary washing tower 4 converter gas has out reached gas state of saturation, and kind of dust reaches 300/Nm
3, this segment converter flue gas enters into wet electrical dust precipitator 5 subsequently, and its dustiness of converter gas electric precipitator 5 exit reaches 40mg/Nm
3, meet the emission standard of national environmental protection converter gas dust content completely.
4, be sent to diffusing chimney 7 through converter gas induced draft fan 6 to be again discharged in air.
Wet electrical dust precipitator 5 is cylindrical, and diameter is pressed flue gas flow rate 0.8m/s and calculated.Power consumption is quite low, and the power consumption of saving after the secondary washing tower resistance of reduction can be used for completely to electric precipitator use, and also has surplus.
Wet electrical dust precipitator 5 length is 10m, and entrance arranges three layers of air distribution plate, and outlet arranges fog drip gathering device.The processing method utilizing secondary washing tower resistance to reduce, also just reduces the speed of the dusty gas passed through in secondary washing tower and gas regulation element, directly alleviates the wearing and tearing of equipment, extends the work-ing life of equipment.
Claims (3)
1. the device for converter gas wet purification, it is characterized in that, comprise converter (1), gasification cooling flue (2), one-level washing tower (3), secondary washing tower (4), wet electrical dust precipitator (5), converter gas induced draft fan (6) and diffusing chimney (7); Gasification cooling flue (2) directly over converter (1), one-level washing tower (3) that gasification cooling flue (2) is linked in sequence successively, secondary washing tower (4), wet electrical dust precipitator (5), converter gas induced draft fan (6), diffusing chimney (7).
2. refining plant according to claim 1, is characterized in that, wet electrical dust precipitator (5) length is 10m-30m, and entrance arranges three layers of air distribution plate, and outlet arranges fog drip gathering device.
3. a using method for device according to claim 1, is characterized in that, concrete steps and parameter as follows:
1) converter gas being rich in the many dust of CO high temperature that the molten iron phase reaction in the oxygen be blown in convertor steelmaking process and converter (1) generates, enters into one-level washing tower (3) through gasification cooling flue (2) and to meet with the water coolant spraying into one-level washing tower (3) and carry out heat and mass;
2) converter gas enters secondary washing tower (4) from one-level washing tower (3) and again carries out heat and mass with the water coolant sprayed in secondary washing tower (4);
3) secondary washing tower (4) converter gas has out reached gas state of saturation, and kind of dust reaches 300 ~ 400mg/Nm
3, this segment converter flue gas enters into wet electrical dust precipitator (5) subsequently, and converter gas electric precipitator (5) exit dustiness reaches≤50mg/Nm
3;
4) converter gas is sent to diffusing chimney (7) through converter gas induced draft fan (6) again and is discharged in air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510234012.5A CN104894329A (en) | 2015-05-09 | 2015-05-09 | Wet purifying device for converter smoke and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510234012.5A CN104894329A (en) | 2015-05-09 | 2015-05-09 | Wet purifying device for converter smoke and application method |
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| Publication Number | Publication Date |
|---|---|
| CN104894329A true CN104894329A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510234012.5A Pending CN104894329A (en) | 2015-05-09 | 2015-05-09 | Wet purifying device for converter smoke and application method |
Country Status (1)
| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5662913A (en) * | 1979-10-23 | 1981-05-29 | Kawasaki Heavy Ind Ltd | Method and device for gas sealing of converter furnace port |
| CN1276098C (en) * | 2002-09-04 | 2006-09-20 | 上海外高桥喷雾系统有限公司 | Technique for dedusting flue gas of rotating furnace through semi-dry process |
| CN104451025A (en) * | 2014-11-26 | 2015-03-25 | 常州互联天健信息科技有限公司 | Coal gas purifying and recycling device |
-
2015
- 2015-05-09 CN CN201510234012.5A patent/CN104894329A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5662913A (en) * | 1979-10-23 | 1981-05-29 | Kawasaki Heavy Ind Ltd | Method and device for gas sealing of converter furnace port |
| CN1276098C (en) * | 2002-09-04 | 2006-09-20 | 上海外高桥喷雾系统有限公司 | Technique for dedusting flue gas of rotating furnace through semi-dry process |
| CN104451025A (en) * | 2014-11-26 | 2015-03-25 | 常州互联天健信息科技有限公司 | Coal gas purifying and recycling device |
Non-Patent Citations (1)
| Title |
|---|
| 孙承波 等: "氧气转炉烟气净化回收技术", 《重型机械》 * |
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Application publication date: 20150909 |
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| RJ01 | Rejection of invention patent application after publication |