CN219186459U - System for utilize sintering machine flue gas desulfurization denitration system emergency treatment coke oven flue gas - Google Patents
System for utilize sintering machine flue gas desulfurization denitration system emergency treatment coke oven flue gas Download PDFInfo
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- CN219186459U CN219186459U CN202320257542.1U CN202320257542U CN219186459U CN 219186459 U CN219186459 U CN 219186459U CN 202320257542 U CN202320257542 U CN 202320257542U CN 219186459 U CN219186459 U CN 219186459U
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- 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
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Abstract
The utility model discloses a system for emergency treatment of coke oven smoke by using a sintering machine smoke desulfurization and denitrification system, which comprises a coke oven smoke treatment module and a sintering machine smoke treatment module, wherein the coke oven smoke treatment module comprises a coke oven smoke conveying pipeline, the sintering machine smoke treatment module comprises a sintering machine smoke conveying pipeline, and a sintering smoke main exhaust fan, a second valve switch, an SDA desulfurizing tower, a first bag dust collector, a first SCR denitration reactor and a first booster fan are sequentially connected on the sintering machine smoke conveying pipeline along the smoke flowing direction; the coke oven flue gas conveying pipeline and the sintering machine flue gas conveying pipeline are connected through an emergency flue. The coke oven flue gas desulfurization and denitrification system is connected in series with the sintering machine flue gas desulfurization and denitrification system, and the sintering machine flue gas desulfurization and denitrification system is used as an emergency desulfurization and denitrification facility of the coke oven flue gas desulfurization and denitrification system, so that investment cost can be greatly reduced compared with a newly-built SDS+SCR desulfurization and denitrification facility.
Description
Technical Field
The utility model belongs to the technical field of flue gas desulfurization and denitrification, and particularly relates to a system for emergency treatment of coke oven flue gas by using a sintering machine flue gas desulfurization and denitrification system.
Background
The coke oven cannot realize the integral shutdown due to the characteristics of the production process and the equipment. The desulfurization and denitration of the coke oven flue gas respectively adopt an SDS (sodium dodecyl sulfate) process and an SCR (selective catalytic reduction) process, a dust removing cloth bag in the SDS and a catalyst in the SCR are limited by service life, periodic maintenance is needed, and during the period of periodic maintenance or equipment failure, the coke oven flue gas pollutant cannot reach the emission standard due to no standby emergency desulfurization and denitration facility, so that the extremely high environmental risk is caused. According to the current situation, the coke oven flue gas emergency treatment facility is constructed, and the maintenance and sudden faults at regular intervals are very necessary.
Aiming at the problems, the countermeasure commonly adopted in the industry at present is to newly establish a set of SDS+SCR mode to realize emergency, but the mode has the defects of larger investment, low utilization rate of standby facilities and the like, and the risk of failure caused by long-time unused SCR catalyst of the standby emergency facilities exists, so that the new set of SDS+SCR desulfurization and denitrification facilities is very uneconomical as emergency standby.
Based on the above technologyThe technical problem is that the applicant combines the sintering machine flue gas desulfurization and denitrification system currently operated in a factory, proposes to connect the coke oven flue gas desulfurization and denitrification system with the sintering machine flue gas desulfurization and denitrification system in series, uses the sintering machine flue gas desulfurization and denitrification system as an emergency desulfurization and denitrification facility of the coke oven flue gas desulfurization and denitrification system, and can realize the effective treatment of coke oven flue gas pollutants by utilizing the sintering desulfurization and denitrification facility in the implementation stage SO as to meet SO required by regional atmospheric pollutant emission Standard of Shandong province (DB 37/2376-2019) 2 The discharge concentration is less than 30mg/m 3 ，NO x The discharge concentration is less than 100mg/m 3 Particulate matter emission concentration < 10mg/m 3 Compared with a newly-built SDS+SCR desulfurization and denitrification facility, the limit value of the emission concentration of the atmospheric pollutants of the coke oven chimney can greatly reduce the investment cost.
Disclosure of Invention
The utility model aims to provide a system for emergency treatment of coke oven flue gas by using a sintering machine flue gas desulfurization and denitrification system, so as to solve the defects caused by the prior art.
The utility model provides a system for emergency treatment of coke oven smoke by using a sintering machine smoke desulfurization and denitrification system, which comprises a coke oven smoke treatment module and a sintering machine smoke treatment module, wherein the coke oven smoke treatment module comprises a coke oven smoke conveying pipeline, the sintering machine smoke treatment module comprises a sintering machine smoke conveying pipeline, a sintering smoke main exhaust fan, a second valve switch, an SDA desulfurizing tower, a first bag dust collector, a first SCR denitration reactor and a first booster fan are sequentially connected on the sintering machine smoke conveying pipeline along the smoke flowing direction, and an air outlet of the first booster fan is connected with a coke oven smoke standby chimney; the coke oven flue gas conveying pipeline is connected with the sintering machine flue gas conveying pipeline through an emergency flue; and a third valve switch, a measurement and control device, a second booster fan and a fourth valve switch are sequentially connected from the near to the far on the emergency flue from the coke oven flue gas conveying pipeline.
Preferably, a first valve switch, an SDS desulfurizing device, a second bag-type dust remover, a second SCR denitration reactor, a third booster fan and a coke oven chimney are sequentially connected on a coke oven flue gas conveying pipeline along the flue gas flowing direction.
Preferably, the connection position of the emergency flue and the coke oven flue gas conveying pipeline is positioned before the first valve switch, and the connection position of the emergency flue and the sintering machine flue gas conveying pipeline is positioned between the second valve switch and the SDA desulfurizing tower.
Preferably, the SDA desulfurization tower is connected with a desulfurizing agent supply device comprising a desulfurizing agent storage tank, a desulfurizing slurry tank, a slurry pump, a self-flowing storage tank and a rotary atomizer.
Preferably, the measurement and control device comprises a temperature sensor, a pressure sensor, a flow sensor, a humidity sensor, an oxygen concentration sensor, a dust concentration sensor, a sulfur dioxide concentration sensor and a nitrogen oxide concentration sensor.
The utility model has the advantages that:
the coke oven flue gas desulfurization and denitrification system is connected in series with the sintering machine flue gas desulfurization and denitrification system, the sintering machine flue gas desulfurization and denitrification system is used as an emergency desulfurization and denitrification facility of the coke oven flue gas desulfurization and denitrification system, the project at present enters an implementation stage, the sintering desulfurization and denitrification facility can be utilized to realize the effective treatment of coke oven flue gas pollutants, and SO required by regional atmospheric pollutant emission Standard in Shandong province (DB 37/2376-2019) is reached 2 The discharge concentration is less than 30mg/m 3 ，NO x The discharge concentration is less than 100mg/m 3 Particulate matter emission concentration < 10mg/m 3 Compared with a newly-built SDS+SCR desulfurization and denitrification facility, the limit value of the emission concentration of the atmospheric pollutants of the coke oven chimney can greatly reduce the investment cost.
Drawings
FIG. 1 is a process flow diagram of the present utility model.
The figure shows:
1. the device comprises an SDS desulfurization device, 2, a second bag-type dust remover, 3, a second SCR denitration reactor, 4, a third booster fan, 5, a coke oven chimney, 6, a measurement and control device, 7, a second booster fan, 8, a sintering flue gas main exhaust fan, 9, an SDA desulfurization tower, 10, a first bag-type dust remover, 11, a first SCR denitration reactor, 12, a first booster fan, 13, a coke oven flue gas standby chimney, 14, a first valve switch, 15, a third valve switch, 16, a fourth valve switch, 17, a second valve switch, 18, a desulfurizing agent supply device, 19 and coke oven flue gas.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
As shown in fig. 1, the system for emergency treatment of coke oven flue gas by using a sintering machine flue gas desulfurization and denitrification system comprises a coke oven flue gas treatment module and a sintering machine flue gas treatment module, wherein the coke oven flue gas treatment module comprises a coke oven flue gas conveying pipeline, the sintering machine flue gas treatment module comprises a sintering machine flue gas conveying pipeline, a sintering flue gas main exhaust fan 8, a second valve switch 17, an SDA desulfurization tower 9, a first bag-type dust remover 10, a first SCR denitration reactor 11 and a first booster fan 12 are sequentially connected on the sintering machine flue gas conveying pipeline along the flue gas circulation direction, and an air outlet of the first booster fan 12 is connected with a coke oven flue gas standby chimney 13; the coke oven flue gas conveying pipeline is connected with the sintering machine flue gas conveying pipeline through an emergency flue; and a third valve switch 15, a measurement and control device 6, a second booster fan 7 and a fourth valve switch 16 are sequentially connected from the near to the far on the emergency flue from the coke oven flue gas conveying pipeline.
In the embodiment, a first valve switch 14, an SDS desulfurization device 1, a second bag-type dust collector 2, a second SCR denitration reactor 3, a third booster fan 4 and a coke oven chimney 5 are sequentially connected on a coke oven flue gas conveying pipeline along the flue gas flowing direction.
In this embodiment, the connection position of the emergency flue and the flue gas transmission pipeline of the coke oven is located before the first valve switch 14, and the connection position of the emergency flue and the flue gas transmission pipeline of the sintering machine is located between the second valve switch 17 and the SDA desulfurizing tower 9.
In this embodiment, the SDA desulfurization tower 9 is connected to a desulfurizing agent supply device 18, the desulfurizing agent supply device 18 includes a desulfurizing agent storage tank, a desulfurizing slurry tank, a slurry pump, a self-flowing storage tank, and a rotary atomizer, and the desulfurizing agent supply device 18 is of an existing structure.
In this embodiment, the measurement and control device 6 includes a temperature sensor, a pressure sensor, a flow sensor, a humidity sensor, an oxygen concentration sensor, a dust concentration sensor, a sulfur dioxide concentration sensor, and a nitrogen oxide concentration sensor.
The method for treating the coke oven fume by the system comprises the following steps:
(1) When the coke oven flue gas treatment module is normally used, the third valve switch 15 is closed, the first valve switch 14 is opened, and the coke oven flue gas 19 sequentially passes through the SDS desulfurization device 1, the second bag-type dust remover 2, the second SCR denitration reactor 3, the third booster fan 4 and the coke oven chimney 5, so that the coke oven flue gas does not enter an emergency flue;
(2) When the coke oven flue gas treatment module is in fault or maintenance, the first valve switch 14 and the second valve switch 17 are closed, the third valve switch 15 and the fourth valve switch 16 are opened, and the sintering machine is temporarily stopped;
(3) The flue gas in the coke oven flue gas conveying pipeline enters an emergency flue, is pressurized by a second booster fan 7 and enters a sintering machine flue gas conveying pipeline, then the flue gas sequentially passes through an SDA desulfurizing tower 9, a first bag-type dust remover 10, a first SCR denitration reactor 11 and a first booster fan 12, is pressurized again by the first booster fan 12 and enters a coke oven flue gas standby chimney 13 for discharging, and a desulfurizing agent supply device 18 conveys a desulfurizing agent to the SDA desulfurizing tower 9.
It will be appreciated by those skilled in the art that the present utility model can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the utility model or equivalents thereto are intended to be embraced therein.
Claims (5)
1. Utilize sintering machine flue gas desulfurization denitration system emergency treatment coke oven flue gas's system, its characterized in that: the device comprises a coke oven flue gas treatment module and a sintering machine flue gas treatment module, wherein the coke oven flue gas treatment module comprises a coke oven flue gas conveying pipeline, the sintering machine flue gas treatment module comprises a sintering machine flue gas conveying pipeline, a sintering flue gas main exhaust fan, a second valve switch, an SDA desulfurizing tower, a first bag-type dust remover, a first SCR denitration reactor and a first booster fan are sequentially connected on the sintering machine flue gas conveying pipeline along the flue gas flowing direction, and an air outlet of the first booster fan is connected with a coke oven flue gas standby chimney; the coke oven flue gas conveying pipeline is connected with the sintering machine flue gas conveying pipeline through an emergency flue; and a third valve switch, a measurement and control device, a second booster fan and a fourth valve switch are sequentially connected from the near to the far on the emergency flue from the coke oven flue gas conveying pipeline.
2. The system for emergency treatment of coke oven flue gas by using a sintering machine flue gas desulfurization and denitrification system according to claim 1, wherein: the first valve switch, the SDS desulfurizing device, the second bag-type dust remover, the second SCR denitration reactor, the third booster fan and the coke oven chimney are sequentially connected on the coke oven flue gas conveying pipeline along the flue gas flowing direction.
3. The system for emergency treatment of coke oven flue gas by using a sintering machine flue gas desulfurization and denitrification system according to claim 2, wherein: the connection position of the emergency flue and the coke oven flue gas conveying pipeline is positioned in front of the first valve switch, and the connection position of the emergency flue and the sintering machine flue gas conveying pipeline is positioned between the second valve switch and the SDA desulfurizing tower.
4. The system for emergency treatment of coke oven flue gas by using a sintering machine flue gas desulfurization and denitrification system according to claim 1, wherein: the SDA desulfurizing tower is connected with a desulfurizing agent supply device, and the desulfurizing agent supply device comprises a desulfurizing agent storage tank, a desulfurizing slurry tank, a slurry pump, a self-flowing storage tank and a rotary atomizer.
5. The system for emergency treatment of coke oven flue gas by using a sintering machine flue gas desulfurization and denitrification system according to claim 1, wherein: the measurement and control device comprises a temperature sensor, a pressure sensor, a flow sensor, a humidity sensor, an oxygen concentration sensor, a dust concentration sensor, a sulfur dioxide concentration sensor and a nitrogen oxide concentration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320257542.1U CN219186459U (en) | 2023-02-20 | 2023-02-20 | System for utilize sintering machine flue gas desulfurization denitration system emergency treatment coke oven flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320257542.1U CN219186459U (en) | 2023-02-20 | 2023-02-20 | System for utilize sintering machine flue gas desulfurization denitration system emergency treatment coke oven flue gas |
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| CN219186459U true CN219186459U (en) | 2023-06-16 |
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| CN202320257542.1U Active CN219186459U (en) | 2023-02-20 | 2023-02-20 | System for utilize sintering machine flue gas desulfurization denitration system emergency treatment coke oven flue gas |
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