CN218046953U - Flue gas dust removal and purification system for submerged arc furnace - Google Patents
Flue gas dust removal and purification system for submerged arc furnace Download PDFInfo
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- CN218046953U CN218046953U CN202222343651.3U CN202222343651U CN218046953U CN 218046953 U CN218046953 U CN 218046953U CN 202222343651 U CN202222343651 U CN 202222343651U CN 218046953 U CN218046953 U CN 218046953U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model discloses a flue gas dust removal and purification system for a submerged arc furnace, which comprises a first on-off valve, a second on-off valve, a bypass pipeline and a temperature detection element; a first on-off valve is arranged on a pipeline between the two air coolers, a bypass pipeline is communicated between an outlet of the first air cooler and an outlet of the second air cooler, a second on-off valve is arranged on the bypass pipeline, and a temperature detection element is arranged on a pipeline at the inlet of the bag-type dust collector. The advantages are that: when the temperature detected by the temperature detection element is lower than a set lower limit value, a signal is fed back to the controller, the second on-off valve is controlled to be opened through the controller, the first on-off valve is closed, smoke enters the bag-type dust remover only through the air cooler, the smoke temperature entering the bag-type dust remover can be effectively controlled, the phenomenon that condensation and tar precipitation occur due to too low smoke temperature is avoided, the bag is prevented from being blocked, and the normal operation of the system is guaranteed.
Description
The technical field is as follows:
the utility model relates to a manganese-silicon alloy production technical field, in particular to hot stove flue gas dust removal clean system in ore deposit.
Background art:
the manganese-silicon alloy is a product which takes manganese ore and silica as raw materials, lime as a slagging agent and a desulfurizer and uses a carbonaceous reducing agent to carry out continuous carbon reduction in an electrically heated ore-smelting reduction furnace, and the ore-smelting reduction furnace is important equipment for producing the manganese-silicon alloy; in the process of producing manganese-silicon alloy by using an ore-smelting furnace, the discharged flue gas sequentially enters a settling bin, two serially connected air coolers (bins), a crude gas fan, a filtering bin (bag-type dust remover), a gas purifying fan and a gas holder; under the effect of the crude gas fan, the flue gas makes large-particle dust subside through subsiding the storehouse, cools off and cools down through two air coolers in proper order, makes partial particle subside simultaneously, reenters and filters the storehouse and carries out filtration treatment, and the gas after the filtration gets into the gas holder under the effect of the clean gas fan for the electricity generation use.
The problems that exist are as follows: when the smoke volume is insufficient, the smoke passes through the two air coolers in sequence, and due to the fact that the continuously reduced temperature is too low, the smoke has a condensation phenomenon and a tar precipitation phenomenon in the filtering bin, dust in the filtering bin is hardened, a cloth bag is blocked, air permeability is poor, and normal production is affected.
The utility model has the following contents:
an object of the utility model is to provide a hot stove flue gas dust removal purification system in ore deposit that effectively avoids filtering in the storehouse dust and hardens and influence normal production.
The utility model discloses by following technical scheme implement: the system comprises a settling bin, two serially connected air coolers, a coarse air fan, a bag-type dust remover, a purification fan and a gas holder, wherein the inlet of the settling bin is communicated with the flue gas outlet of the submerged arc furnace; the device also comprises a first on-off valve, a second on-off valve, a bypass pipeline and a temperature detection element; the two air coolers are provided with a first on-off valve on a pipeline, the first air cooler is communicated with the second air cooler through a bypass pipeline, the bypass pipeline is provided with a second on-off valve, and a temperature detection element is arranged on a pipeline at the inlet of the bag-type dust remover.
Further, the method comprises the following steps of; the temperature detection element is a temperature transmitter, and the first on-off valve and the second on-off valve are both electrically operated valves; the temperature detection element is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the first on-off valve and the second on-off valve.
The utility model has the advantages that: when the smoke temperature detected by the temperature detection element is within a set range value, the normal operation of the submerged arc furnace is indicated, the discharged smoke amount is sufficient, at the moment, the second on-off valve is closed, the first on-off valve is in an open state, and the smoke sequentially passes through the two air coolers and then enters the bag-type dust remover; when the temperature detected by the temperature detection element is lower than a set lower limit value, a signal is fed back to the controller, the second on-off valve is controlled to be opened through the controller, the first on-off valve is closed, smoke enters the bag-type dust remover only through the air cooler, the smoke temperature entering the bag-type dust remover can be effectively controlled, the phenomenon that condensation and tar precipitation occur due to too low smoke temperature is avoided, the bag is prevented from being blocked, and the normal operation of the system is guaranteed.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
The parts in the drawings are numbered as follows: the device comprises a submerged arc furnace 1, a settling bin 2, an air cooler 3, a first air cooler 3.1, a second air cooler 3.2, a raw gas fan 4, a bag-type dust remover 5, a purification fan 6, a gas cabinet 7, a first on-off valve 8, a second on-off valve 9, a bypass pipeline 10, a temperature detection element 11 and a controller 12.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the embodiment provides a flue gas dust removal and purification system for a submerged arc furnace, which includes a settling bin 2, two air coolers 3, a raw gas blower 4, a bag-type dust collector 5, a purification blower 6 and a gas holder 7 that are connected in series in sequence, wherein an inlet of the settling bin 2 is communicated with a flue gas outlet of the submerged arc furnace 1, and the settling bin 2 includes an outer wall, a heat insulation layer and a steel plate layer in sequence from outside to inside, which is a known existing device in the art, and a specific structure is not described herein again; the two air coolers 3 connected in series comprise a first air cooler 3.1 and a second air cooler 3.2, the air coolers 3 are the prior art for cooling flue gas in the field, and the specific structure is not described herein again; in the normal operation process of the submerged arc furnace 1, the generated flue gas is firstly discharged into a settling bin 2 under the action of a crude gas fan 4, large-particle dust is settled, then the large-particle dust sequentially enters two air coolers 3 for cooling, part of the dust is settled, the settled flue gas enters a bag-type dust remover 5 for filtration treatment, and the filtered gas enters a gas holder 7 under the action of a clean gas fan for power generation.
The device also comprises a first on-off valve 8, a second on-off valve 9, a bypass pipeline 10 and a temperature detection element 11; a first on-off valve 8 is arranged on a pipeline between the two air coolers 3, a bypass pipeline 10 is communicated between the outlet of the first air cooler 3 and the outlet of the second air cooler 3, a second on-off valve 9 is arranged on the bypass pipeline 10, and a temperature detection element 11 is arranged on a pipeline at the inlet of the bag-type dust remover 5; the temperature detection element 11 is a temperature transmitter, and the first on-off valve 8 and the second on-off valve 9 are both electrically operated valves; the temperature detection element 11 is electrically connected with the input end of the controller 12, the output end of the controller 12 is electrically connected with the first on-off valve 8 and the second on-off valve 9, the temperature of the flue gas before entering the bag-type dust collector 5 is detected in real time through the temperature transmitter and fed back to the controller 12 in real time; when the temperature detected by the temperature transmitter is within a set range value, the normal operation of the submerged arc furnace 1 is indicated, the discharged flue gas amount is sufficient, at the moment, the second on-off valve 9 is in a closed state, the first on-off valve 8 is in an open state, and the flue gas sequentially passes through the two air coolers 3; when the temperature detected by the temperature transmitter is lower than a set lower limit value, a signal is fed back to the controller 12, the second on-off valve 9 is controlled to be opened through the controller 13, the first on-off valve 8 is closed, smoke only enters the bag-type dust remover 5 through the air cooler 3, the smoke temperature in the bag-type dust remover 5 can be effectively controlled, the phenomenon that condensation and tar are separated out due to too low smoke temperature is avoided, the bag is prevented from being blocked, and the normal operation of the system is guaranteed.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The system comprises a settling bin, two serially connected air coolers, a coarse air fan, a bag-type dust remover, a purification fan and a gas holder, wherein the inlet of the settling bin is communicated with the flue gas outlet of the submerged arc furnace; the device is characterized by also comprising a first on-off valve, a second on-off valve, a bypass pipeline and a temperature detection element; the two air coolers are provided with a first on-off valve on a pipeline, the first air cooler is communicated with the second air cooler through a bypass pipeline, the bypass pipeline is provided with a second on-off valve, and a temperature detection element is arranged on a pipeline at the inlet of the bag-type dust remover.
2. The submerged arc furnace flue gas dust removal and purification system according to claim 1, characterized in that; the temperature detection element is a temperature transmitter, and the first on-off valve and the second on-off valve are both electrically operated valves; the temperature detection element is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the first on-off valve and the second on-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222343651.3U CN218046953U (en) | 2022-09-02 | 2022-09-02 | Flue gas dust removal and purification system for submerged arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222343651.3U CN218046953U (en) | 2022-09-02 | 2022-09-02 | Flue gas dust removal and purification system for submerged arc furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218046953U true CN218046953U (en) | 2022-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222343651.3U Active CN218046953U (en) | 2022-09-02 | 2022-09-02 | Flue gas dust removal and purification system for submerged arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218046953U (en) |
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2022
- 2022-09-02 CN CN202222343651.3U patent/CN218046953U/en active Active
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