CN215799313U - Dry quenching device and system - Google Patents
Dry quenching device and system Download PDFInfo
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- CN215799313U CN215799313U CN202122418439.4U CN202122418439U CN215799313U CN 215799313 U CN215799313 U CN 215799313U CN 202122418439 U CN202122418439 U CN 202122418439U CN 215799313 U CN215799313 U CN 215799313U
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Abstract
The embodiment of the application provides a dry quenching device and a system, wherein the dry quenching device comprises a dry quenching furnace, a gas circulation processing system and a coke discharging device, and a gas inlet, a gas outlet and a discharge hole are reserved on the dry quenching furnace; the gas circulation treatment system is connected between a gas inlet and a gas outlet of the dry quenching furnace; the coke discharging device is connected with a discharge port on the dry quenching furnace, a dust removing port is arranged on the coke discharging device, and the dust removing port is connected with the gas circulation processing system; and the gas circulation treatment system is configured to cool at least coke-discharging flue gas and circulating gas discharged from the gas outlet and blow the cooled coke-discharging flue gas into the dry quenching furnace through the gas inlet. By applying the embodiment of the application, the effective treatment of the coke discharging flue gas of the dry quenching device can be realized.
Description
Technical Field
The application relates to the technical field of coking, in particular to a dry quenching device and a system.
Background
This section provides background information related to the present application and is not necessarily prior art.
Dry quenching is relative to wet quenching and refers to a quenching method for cooling incandescent coke by using inert gas.
In the related technology, the coke dry quenching device can discharge a large amount of flue gas in the coke dry quenching production process, particularly during coke loading and coke discharging, the flue gas mainly comprises coke loading flue gas, flue gas discharged after a fan and coke discharging flue gas, wherein the coke discharging flue gas has the characteristics of small flue gas amount, continuous discharge, small flow fluctuation, stable temperature and the like, and the coke discharging flue gas is usually discharged into the air after being dedusted by a ground dedusting station to increase the work load of the coke dry quenching dedusting ground station. In addition, the coke discharging flue gas is often contaminated with sulfides, such as SO, due to the rotary leakage of the rotary sealing valve of the coke discharging device2The gas concentration is generally 50-60 mg/m3Left and right, SO in the coke-discharging flue gas2Although the concentration is not high, the requirement of the opinion on promoting and implementing the ultralow emission of the steel industry is still not met, and the temperature is low, the smoke gas amount is small, the pollutant concentration is low, so that the selectable desulfurization treatment method is limited, the economy is poor, and the method is a difficult point for treating the coke-discharging smoke gas in the dry quenching device.
Based on the above problems and in combination with the promotion of ultralow emission requirements of the steel industry, how to effectively treat the flue gas generated in the coke discharging process of the coke dry quenching device is a technical problem to be solved urgently in the flue gas treatment of the coke dry quenching device at present.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a dry quenching device and a system, so as to realize effective treatment of coke discharging flue gas of the dry quenching device. The specific technical scheme is as follows:
embodiments of a first aspect of the present application provide a dry quenching device, including:
the dry quenching furnace is provided with an air inlet, an air outlet and a discharge port;
the gas circulation treatment system is connected between a gas inlet and a gas outlet of the dry quenching furnace;
the coke discharging device is connected with a discharge port on the dry quenching furnace, a dust removing port is arranged on the coke discharging device, and the dust removing port is connected with the gas circulation processing system;
and the gas circulation treatment system is configured to cool at least coke-discharging flue gas and circulating gas discharged from the gas outlet and blow the cooled coke-discharging flue gas into the dry quenching furnace through the gas inlet.
In some embodiments, a suction device is disposed between the dust removal port and the gas circulation treatment system.
In some embodiments, the air-breathing device is a fan.
In some embodiments, a flow measurement device is disposed between the dust removal port and the gas circulation treatment system.
In some embodiments, the upper part of the dry quenching furnace is provided with an annular air duct, and the air outlet is arranged on the annular air duct.
In some embodiments, the gas circulation treatment system includes a first cooling device connected between the gas outlet and the gas inlet.
In some embodiments, a first dust collector is arranged between the air outlet and the first cooling device; and a second dust remover is arranged between the first cooling device and the air inlet.
In some embodiments, a recirculation fan is disposed between the second precipitator and the air inlet, and a second cooling device is disposed between the recirculation fan and the air inlet.
In some embodiments, a temperature measuring device is disposed between the dust removal port and the gas circulation treatment system.
Embodiments of the second aspect of the present application also provide a dry quenching system comprising a dry quenching device provided according to any of the embodiments described above.
The utility model provides a coke dry quenching device, be connected with gas circulation processing system through the dust removal mouth that will arrange the burnt device and go up, gas circulation processing system during operation, its inside negative pressure that produces, can inhale the row's burnt flue gas of dust removal mouth department wherein, get at least to get into dry quenching stove through the air inlet after cooling from gas outlet exhaust cycle gas and row's burnt flue gas, and simultaneously, because arrange burnt device and outside intercommunication, consequently the outside air can be inhaled gas circulation processing system with row's burnt flue gas together, the air that is mingled with in row burnt flue gas can with the combustible component among the gas circulation processing system (CO, H2) A combustion reaction occurs to control the concentration of combustible components in the circulating gas. In addition, the coke-discharging flue gas and the circulating gas discharged from the gas outlet are at least cooled and then blown into the dry quenching furnace through the gas inlet. From this, through the coke dry quenching device of this application, can realize not arranging outward of burnt flue gas when guaranteeing the normal operating of dry quenching stove, sulfur dioxide's emission source in the reducible coke dry quenching device in the burnt flue gas of row can reduce the work load of dry quenching dust removal ground satellite station simultaneously, has realized the effective processing of the burnt flue gas of row of coke dry quenching device. Of course, it is not necessary for any product to achieve all of the above-described advantages at the same time for the practice of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a dry quenching device provided by an embodiment of the application.
Icon: 1-dry quenching in a furnace; 11-an air inlet; 12-air outlet; 13-a discharge outlet; 14-an annular air duct; 2-a gas circulation treatment system; 21-a first cooling device; 22-a first dust separator; 23-a second precipitator; 24-a circulating fan; 25-a second cooling device; 3-a coke discharging device; 31-a dust removal port; 4-a getter device; 5-a temperature measuring device; 6-flow measuring device.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
Embodiments of a first aspect of the present application provide a dry quenching device, as shown in fig. 1, comprising: the coke dry quenching system comprises a dry quenching furnace 1, a gas circulation treatment system 2 and a coke discharging device 3, wherein a gas inlet 11, a gas outlet 12 and a discharge port 13 are reserved on the dry quenching furnace 1; the gas circulation treatment system 2 is connected between a gas inlet 11 and a gas outlet 12 of the dry quenching furnace; the coke discharging device 3 is connected with a discharge port 13 on the dry quenching furnace 1, a dust removing port 31 is arranged on the coke discharging device 3, and the dust removing port 31 is connected with the gas circulation processing system 2; wherein, the gas circulation treatment system 2 is configured to at least cool the coke discharging flue gas and the circulation gas discharged from the gas outlet 12 and blow the cooled coke discharging flue gas and the cooled circulation gas into the dry quenching furnace 1 through the gas inlet 11.
According to the dry quenching device of the embodiment of the application, the dust removal port 31 arranged on the coke discharging device 3 is connected with the gas circulation processing system 2, when the gas circulation processing system 2 works, the gas circulation processing system generates negative pressure inside the gas circulation processing system, the coke discharging flue gas at the dust removal port 31 can be sucked into the gas circulation processing system, meanwhile, because the coke discharging device 3 is communicated with the outside, the outside air and the coke discharging flue gas are sucked into the gas circulation processing system 2 together, and the air mixed in the coke discharging flue gas can be combustible components (CO and H) in the gas circulation processing system 22) A combustion reaction occurs to control the concentration of combustible components in the circulating gas. In addition, the coke-discharging flue gas and the circulating gas discharged from the gas outlet 12 are supplied toCooled little and blown into the dry quenching furnace 1 through the air inlet 11. Therefore, through the coke dry quenching device, the coke discharge flue gas is not discharged outside while the normal operation of the coke dry quenching furnace is ensured, the emission source of sulfur dioxide in the coke discharge flue gas in the coke dry quenching device can be reduced, the workload of a coke dry quenching dust removal ground station can be reduced, and the effective treatment of the coke discharge flue gas of the coke dry quenching device is realized.
In some embodiments of the present application, a suction device 4 is provided between the dust removal port 31 and the gas circulation treatment system 2. The gas circulation processing system 2 can generate certain negative pressure during working, when the negative pressure is large enough, the coke-discharging flue gas can be directly sucked into the gas circulation processing system 2 through the negative pressure, and when the negative pressure is not large enough, the suction device 4 can be arranged between the dust removal port 31 and the gas circulation processing system 2, the coke-discharging flue gas is sucked into the gas circulation processing system 2 through the suction device 4, and combustible components (CO and H) in the circulating gas can be mixed with the coke-discharging flue gas2) A combustion reaction occurs to control the concentration of combustible components in the circulating gas.
In some embodiments of the present application, the air suction device 4 is a fan. Specifically, the fan can adopt a centrifugal fan, a pipeline fan and the like, and the transmission efficiency of the coke-discharging flue gas can be improved through the fan.
In some embodiments of the present application, a flow measurement device 6 is disposed between the dust removal port 31 and the gas circulation treatment system 2. The flow measuring device 6 is used for measuring the flow of the coke discharging flue gas and controlling the combustible components (CO and H) in the gas circulation processing system 22) The air is required to be introduced to perform combustion reaction with combustible components, and the main component of the coke discharging flue gas is air, so that the flow rate of the coke discharging flue gas is measured by the flow measuring device 6, and if the air amount in the coke discharging flue gas is enough, the air is not required to be introduced into the dry quenching furnace 1, namely, an air introduction regulating valve (not shown in the figure) of the dry quenching furnace 1 is closed.
In some embodiments of the present application, the upper portion of the dry quenching furnace 1 is provided with an annular air duct 14, and the air outlet 12 is arranged on the annular air duct 14. The annular air duct 14 is used for collecting the circulating gas, and the circulating gas in the dry quenching furnace 1 is transmitted to the gas circulation through the annular air duct 14 via the gas outlet 12In the processing system 2, an air suction pipe (not shown) is connected to the annular air duct 14, an air introduction adjusting valve is arranged on the air suction pipe, and when the air introduction adjusting valve is opened, air required by the dry quenching furnace 1 is introduced into the annular air duct 14 through the air suction pipe, so that combustible components (CO and H) in the air and the circulating gas are facilitated2) A combustion reaction is carried out.
In some embodiments of the present application, the gas recycling system 2 includes a first cooling device 21, the first cooling device 21 being connected between the gas outlet 12 and the gas inlet 11. Since the temperature of the circulation gas discharged from the gas outlet 12 is high, the circulation gas needs to be transferred into the first cooling device 21 to be heat-exchanged, so that the heat in the high-temperature circulation gas is utilized, thereby lowering the temperature of the high-temperature circulation gas.
In some embodiments of the present application, a first dust separator 22 is provided between the air outlet 12 and the first cooling device 21; a second dust separator 23 is provided between the first cooling device 21 and the air inlet 11. When the first dust collector 22 is disposed between the gas outlet 12 and the first cooling device 21, the dust removing port 31 in this application may be directly connected to the first dust collector 22 through a pipe, or the dust removing port 31 may be connected to a position between the gas outlet 12 and the first dust collector 22, so that combustible components (CO, H) in the circulating gas2) Not only can the reaction be carried out in time with the coke discharging flue gas, but also the first dust remover 22 can remove dust from the circulating gas and the coke discharging flue gas at the same time. In addition, the circulating gas carries more coke powder from the gas outlet 12 of the dry quenching furnace, and the coke powder easily causes abrasion to the first cooling device 21, so that the coke powder mixed in the circulating gas needs to be separated, namely, the coke powder is separated from the circulating gas by the first dust remover 22. The separated recycle gas enters the first cooling device 21 for cooling, and then the fine particles in the recycle gas are separated again through the second dust remover 23, so as to reduce the abrasion of the dust in the recycle gas to the passing devices.
In some embodiments of the present application, a circulation fan 24 is provided between the second dust separator 23 and the air inlet 11, and a second cooling device 25 is provided between the circulation fan 24 and the air inlet 11. A power source is provided for the circulating gas to flow to the gas inlet through the circulating fan 24, so that the circulating gas can rapidly flow into the gas inlet 11 of the dry quenching furnace 1, and the working efficiency of the dry quenching furnace 1 is improved. In addition, through set up second cooling device 25 between circulating fan 24 and air inlet 11, the circulating gas gets into second cooling device 25 through circulating fan 24 and further cools down, forms low temperature circulating gas, carries to put out the stove 1 futilely in, continues to carry out the heat exchange, improves the production efficiency of putting out the stove 1 futilely. The first cooling device 21 is a waste heat boiler, and the second cooling device 25 is a feed water preheating device.
In some embodiments of the present application, a temperature measuring device 5 is provided between the dust removal port 31 and the gas circulation treatment system 2. The temperature of the coke discharging flue gas is measured by the temperature measuring device 5, the coke discharging flue gas with a certain temperature is guided into the gas circulation processing system 2, the heat of the coke discharging flue gas is recovered, the gas production of the second cooling device 25 (waste heat boiler) is increased, and the utilization efficiency of the waste heat of the dry quenching coke is improved.
In some embodiments of the present application, a desulfurization device is disposed between the second cooling device 25 and the gas inlet 11, and the concentration of sulfur dioxide in the coke discharging flue gas is much smaller than that of sulfur dioxide in the circulating gas, so that the desulfurization device disposed between the second cooling device 25 and the gas inlet 11 can effectively desulfurize the coke discharging flue gas and the circulating gas without independently desulfurizing the coke discharging flue gas, thereby reducing the investment cost of the dry quenching system.
Embodiments of a second aspect of the present application provide a dry quenching system including the dry quenching device of the above embodiments. Through the coke dry quenching system, the coke discharging flue gas in the coke discharging device is not discharged outside, the discharge source of sulfur dioxide in the coke discharging flue gas in the coke dry quenching device can be reduced, the coke discharging flue gas enters the gas circulation processing system 2, and the coke discharging flue gas is not sent to the coke quenching dust removal ground station for dust removal, the workload of the coke dry quenching dust removal ground station can be reduced, and the effective processing of the coke discharging flue gas of the coke dry quenching device is realized.
The above description is only for the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (10)
1. A dry quenching device, comprising:
the dry quenching furnace is provided with an air inlet, an air outlet and a discharge port;
the gas circulation treatment system is connected between a gas inlet and a gas outlet of the dry quenching furnace;
the coke discharging device is connected with a discharge port on the dry quenching furnace, a dust removing port is arranged on the coke discharging device, and the dust removing port is connected with the gas circulation processing system;
and the gas circulation treatment system is configured to cool at least coke-discharging flue gas and circulating gas discharged from the gas outlet and blow the cooled coke-discharging flue gas into the dry quenching furnace through the gas inlet.
2. The dry quenching device as claimed in claim 1, wherein a suction device is provided between the dust removal port and the gas circulation processing system.
3. The dry quenching device of claim 2, wherein said air suction device is a fan.
4. The dry quenching device of claim 1, wherein a flow measurement device is disposed between the dust removal port and the gas recycle processing system.
5. The dry quenching device as claimed in claim 1, wherein the upper part of the dry quenching furnace is provided with an annular air duct, and the air outlet is arranged on the annular air duct.
6. The dry quenching device as claimed in any of claims 1 to 5, wherein the gas circulation handling system comprises a first cooling device connected between the gas outlet and the gas inlet.
7. The dry quenching device as claimed in claim 6, wherein a first dust separator is arranged between the air outlet and the first cooling device; and a second dust remover is arranged between the first cooling device and the air inlet.
8. The dry quenching device of claim 7, wherein a recirculation fan is disposed between the second dust separator and the air inlet, and a second cooling device is disposed between the recirculation fan and the air inlet.
9. The dry quenching device of claim 8, wherein a temperature measuring device is disposed between the dust removal port and the gas circulation processing system.
10. A dry quenching system, characterized in that: comprising a dry quenching device according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122418439.4U CN215799313U (en) | 2021-10-08 | 2021-10-08 | Dry quenching device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122418439.4U CN215799313U (en) | 2021-10-08 | 2021-10-08 | Dry quenching device and system |
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| Publication Number | Publication Date |
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| CN215799313U true CN215799313U (en) | 2022-02-11 |
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| CN202122418439.4U Active CN215799313U (en) | 2021-10-08 | 2021-10-08 | Dry quenching device and system |
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| CN (1) | CN215799313U (en) |
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2021
- 2021-10-08 CN CN202122418439.4U patent/CN215799313U/en active Active
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