CN115353899A - Dry quenching system - Google Patents

Abstract

An embodiment of the present application provides a dry quenching system, including: the coke dry quenching furnace is provided with a first air outlet; the dust remover is provided with a second air inlet, and the second air inlet of the dust remover is communicated with the first air outlet of the dry quenching furnace; the flue is arranged between the first air outlet of the dry quenching furnace and the second air inlet of the dust remover; the first water-cooling pipe is arranged inside the flue and is configured to cool the flue. This application embodiment is provided with first water-cooling tube in the flue, when high temperature circulating gas flows through the flue, because the inside of flue is provided with first water-cooling tube, it can cool down for the flue, avoids the high temperature of flue surface for the thickness of flue heat insulation layer can be designed thinly, can reduce the load of flue promptly the dead weight of flue with this, thereby is favorable to reducing the deformation of flue.

Description

A coke dry quenching system

technical field

This application relates to the field of coking, in particular to a coke dry quenching system.

Background technique

Coke quenching refers to cooling the refined red hot coke to a temperature that is convenient for transportation and storage. The commonly used coke quenching method is out-of-furnace coke quenching, which can be divided into dry coke quenching and wet coke quenching. Compared with wet coke quenching, dry coke quenching can recover the high-temperature heat of coke, improve coke quality, and cause less environmental pollution. It is an important energy-saving and environmental protection technology in the iron and steel industry.

In related technologies, a CDQ system generally includes a CDQ furnace and a dust collector. Specifically, dry coke quenching uses inert gas or flue gas as the circulating gas, and the circulating gas absorbs the heat of high-temperature coke in the cooling chamber of the dry quenching furnace to cool the high-temperature coke, and the circulating gas after absorbing heat becomes high-temperature circulating gas, and the high-temperature circulating gas Input to a dust collector to separate coke fines entrained in the recycle gas.

In related technologies, high-temperature circulating gas usually enters the dust collector through the flue. In order to avoid excessive temperature on the outer surface of the flue, the heat insulation layer of the flue is designed to be relatively thick, which will cause a large load on the flue.

Contents of the invention

The purpose of the embodiments of the present application is to provide a coke CDQ system to solve the problem of a large flue load. The specific technical scheme is as follows:

An embodiment of the present application provides a coke CDQ system, including: a CDQ furnace, the CDQ furnace is provided with a first air outlet; a dust collector, the dust collector is provided with a second air inlet, and the dust collector The second air inlet communicates with the first air outlet of the CDQ furnace; the flue is arranged between the first air outlet of the CDQ furnace and the second air inlet of the dust collector; the second A water-cooled pipe, the first water-cooled pipe is arranged inside the flue, and the first water-cooled pipe is configured to cool the flue.

In the embodiment of the present application, the circulating gas is input into the dry quenching furnace to absorb the high temperature of the coke to cool the high-temperature coke, and the absorbed circulating gas is converted into a high-temperature circulating gas. The high-temperature circulating gas enters the dust collector through the flue, and the coke powder carried in the high-temperature circulating gas is separated by the dust collector to achieve the purpose of dust removal. Since the high-temperature circulating gas enters the dust collector through the flue, the temperature of the flue is relatively high. In related technologies, in order to avoid the high temperature of the outer surface of the flue, the heat insulation layer on the surface of the flue is often designed to be thicker. However, in the embodiment of the present application, a first water-cooled pipe is provided in the flue. When the high-temperature circulating gas flows through the flue, since the first water-cooled pipe is installed inside the flue, it can cool the flue and avoid the temperature of the outer surface of the flue. If it is too high, the thickness of the flue insulation layer can be designed thinner, which can reduce the load of the flue, that is, the self-weight of the flue, and thus help reduce the deformation of the flue.

In some embodiments of the present application, the CDQ system further includes a boiler, the boiler is provided with a third air inlet, the dust collector further includes a second air outlet, the third air inlet of the boiler is connected to the The second air outlet of the dust collector is connected.

In some embodiments of the present application, the boiler includes an economizer, a steam drum, and a water wall, the economizer communicates with the steam drum, and the steam drum includes a first downcomer and a first riser, The water wall includes a second downcomer and a second riser, the second downcomer of the water wall communicates with the first downcomer of the steam drum, and the second riser of the water wall communicates with the steam drum The first riser pipe of the first water-cooled pipe is connected with the first riser pipe, the first water-cooled pipe includes a third downcomer and a third riser pipe, the third downcomer of the first water-cooled pipe communicates with the first downcomer of the steam drum, and the first The third riser of a water-cooled tube communicates with the first riser of the steam drum.

In some embodiments of the present application, the first water-cooled tube is a film-type water-cooled tube bank.

In some embodiments of the present application, the first water-cooled pipe further includes a main pipe and at least one branch pipe, the extension direction of the main pipe is consistent with the extension direction of the flue, and the branch pipe is in line with the extension direction of the flue. The main pipe is connected.

In some embodiments of the present application, the CDQ system further includes a second water-cooled tube, the second water-cooled tube includes a fourth downcomer and a fourth riser, and the fourth downcomer of the second water-cooled tube The fourth riser of the second water-cooled pipe is connected with the first riser of the steam drum, and the second water-cooled pipe is located inside the dust collector.

In some embodiments of the present application, the dust remover is a cyclone separator.

In some embodiments of the present application, the flue includes a furnace wall, and the furnace wall is a light furnace wall.

In some embodiments of the present application, the coke CDQ system further includes a secondary dust collector and a fan, the fan includes a fourth air inlet and a fourth air outlet, the boiler also includes a third air outlet, the The secondary dust collector is arranged between the third air outlet of the boiler and the fourth air inlet of the fan, and the fourth air outlet of the fan communicates with the CDQ furnace.

In some embodiments of the present application, the CDQ system further includes a heat pipe disposed between the fourth air outlet of the fan and the CDQ furnace.

Of course, implementing any product or method of the present application does not necessarily need to achieve all the above-mentioned advantages at the same time.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or related technologies. Obviously, the accompanying drawings in the following description are only For some embodiments of the application, those skilled in the art can also obtain other embodiments according to these drawings.

Fig. 1 is the top sectional view of CDQ furnace, deduster and flue of CDQ system in the related art;

Figure 2 is a top sectional view of the CDQ furnace, dust collector and flue of the CDQ system of the embodiment of the present application;

Fig. 3 is the sectional view of A-A place of Fig. 2;

Fig. 4 is a schematic diagram of the connection of the flue, the dust collector and the steam drum of the CDQ system of the embodiment of the present application;

Fig. 5 is a structural schematic diagram of the furnace wall and the first water-cooled tube of the coke CDQ system according to the embodiment of the present application.

In the figure: 10, dry quenching furnace; 101, first air outlet; 20, dust collector; 201, second air inlet; 30, flue; 300, furnace wall; 301, refractory layer; 302, insulation layer; 40, 401, main pipeline; 402, branch pipeline; 410, the third ascending pipe; 420, the third descending pipe; 50, the second water cooling pipe; 510, the fourth ascending pipe; 520, the fourth descending pipe; 60, steam drum; 610, first ascending pipe; 620, first descending pipe; 90, flue.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art based on this application belong to the scope of protection of this application.

As shown in Figure 1, in the related art, the high-temperature circulating gas usually enters the dust collector through the flue 90. In order to avoid the excessive temperature of the outer surface of the flue 90, the heat insulation layer of the flue 90 will be designed relatively thick, which will lead to The load of the flue 90 is relatively large.

In view of this, as shown in FIG. 2 , an embodiment of the present application provides a CDQ system. The CDQ system includes a CDQ furnace 10 , a dust collector 20 and a flue 30 . Wherein, the CDQ furnace 10 is provided with a first air outlet 101 . The dust remover 20 is provided with a second air inlet 201 , and the second air inlet 201 of the dust remover 20 communicates with the first air outlet 101 of the CDQ furnace 10 . The flue 30 is arranged between the first air outlet 101 of the CDQ furnace 10 and the second air inlet 201 of the dust collector 20 . The first water-cooled pipe 40 is disposed inside the flue 30 , and the first water-cooled pipe 40 is configured to cool the flue 30 .

In the embodiment of the present application, the circulating gas is input into the dry quenching furnace 10 to absorb the high temperature of the coke to cool the high-temperature coke, and the absorbed circulating gas is converted into a high-temperature circulating gas. The high-temperature circulating gas enters the dust collector 20 through the flue 30, and the coke powder carried in the high-temperature circulating gas is separated by the dust collector 20 to achieve the purpose of dust removal. Since the high-temperature circulating gas enters the dust collector 20 from the flue 30, the temperature of the flue 30 is relatively high. In related technologies, in order to avoid a high temperature on the outer surface of the flue, the thermal insulation layer on the surface of the flue is often designed to be thicker. However, in the embodiment of the present application, a first water-cooled pipe 40 is set in the flue 30. When the high-temperature circulating gas flows through the flue 30, since the first water-cooled pipe 40 is arranged inside the flue 30, it can cool the flue 30. , to avoid the temperature of the outer surface of the flue 30 being too high, so that the thickness of the heat insulation layer of the flue 30 can be designed to be thinner, so that the load of the flue 30 can be reduced, that is, the self-weight of the flue 30, which is conducive to reducing the flue 30 deformation.

In some embodiments of the present application, the CDQ system further includes a boiler, the boiler is provided with a third air inlet, and the dust collector 20 also includes a second air outlet, and the third air inlet of the boiler and the second air outlet of the dust collector 20 connected. In the embodiment of the present application, the coke CDQ system also includes a boiler. The high-temperature circulating gas enters the boiler after being dedusted by the dust collector 20. The high-temperature circulating gas can exchange heat with the boiler feed water, thereby heating the boiler feed water to a steam state. The generated steam can be used for power generation, which is beneficial to improve the heat utilization rate of the high-temperature circulating gas. In addition, by arranging the first water-cooled tube 40 in the flue 30, the temperature of the high-temperature circulating gas entering the boiler can also be reduced, thereby protecting the furnace wall of the boiler.

Specifically, the boiler may include an economizer, a steam drum 60 and a water wall, wherein the economizer is a device for recovering heat from high-temperature circulating gas, and the economizer is used for heating boiler feed water. The steam drum 60 is a cylindrical pressure vessel, which is mainly used to separate steam from water, supply water to the circulation loop and deliver saturated steam to the superheater. The economizer communicates with the steam drum 60 , and the boiler feed water heated by the economizer flows into the steam drum 60 .

As shown in Figure 4, in some embodiments of the present application, the boiler includes an economizer, a steam drum 60 and a water wall, the economizer communicates with the steam drum 60, and the steam drum 60 includes a first downcomer 620 and a first riser Pipe 610, the water wall includes a second downcomer and a second riser, the second downcomer of the water wall communicates with the first downcomer 620 of the steam drum 60, the second riser of the water wall communicates with the first riser of the steam drum 60 The pipe 610 communicates, the first water-cooled pipe 40 includes a third downcomer 420 and a third riser 410, the third downcomer 420 of the first water-cooled pipe 40 communicates with the first downcomer 620 of the steam drum 60, and the first water-cooled pipe 40 The third rising pipe 410 of the steam drum 60 communicates with the first rising pipe 610 .

In the embodiment of the present application, the first downcomer 620 of the steam drum 60 communicates with the second downcomer of the water-cooled wall and the third downcomer 420 of the first water-cooled tube 40 respectively, and the boiler feed water inside the steam drum 60 passes through the first downcomer. The pipes 620 respectively flow into the second downcomer of the water-cooled wall and the third downcomer 420 of the first water-cooled tube 40, and the boiler feed water continues to absorb heat and generate saturated steam in the water-cooled wall and the first water-cooled tube 40, so that the water-cooled wall and the first water-cooled tube The boiler feed water in the water-cooled tube 40 becomes a steam-water mixture, and the first riser 610 of the steam drum 60 communicates with the second riser of the water-cooled wall and the third riser 410 of the first water-cooled tube 40 respectively, and the steam-water mixture from the water-cooled wall passes through The second riser enters the steam drum 60, and the steam-water mixture from the first water-cooled pipe 40 enters the steam drum 60 through the third riser 410, and the steam-water mixture is separated in the steam drum 60 to obtain saturated steam. Compared with the related technology, in the embodiment of the present application, the steam drum 60 is not only communicated with the water-cooled wall, but also communicated with the first water-cooled pipe 40, so that part of the boiler feed water from the steam drum 60 flows into the water-cooled wall, and the other part flows into the first water-cooled wall. A water-cooled tube 40 , the boiler feed water absorbs heat in the water-cooled wall and the first water-cooled tube 40 , so that the temperature of the boiler feed water rises into a saturated state and generates saturated steam. In the embodiment of the present application, the boiler feed water from the steam drum 60 can not only complete the steam-water circulation through the water-cooled wall, but also complete the steam-water circulation through the first water-cooled tube 40, thereby increasing the realization path of the steam-water circulation, which is beneficial to improve CDQ The reliability of the steam-water cycle of the system can also reduce the temperature of the flue 30 while efficiently utilizing the heat of the high-temperature circulating gas in the flue 30 to reduce the heat loss of the CDQ system. In addition, by connecting the first water-cooled pipe 40 with the steam drum 60, the first water-cooled pipe 40 becomes the heat exchange surface of the boiler feed water and the high-temperature circulating gas, and shares the heat exchange amount of the water-cooled wall, so that the heat-exchange area of the water-cooled wall can be Shrinkage, which in turn helps to reduce the volume of the boiler.

As shown in FIG. 5 , in some embodiments of the present application, the first water-cooled tube 40 is a film-type water-cooled tube bank. Membrane water-cooled pipe row has the advantages of easy installation and effective protection of the wall. Specifically, the membrane-type water-cooled tube bank includes a plurality of tube bank assemblies, each tube bank assembly includes a plurality of finned tubes welded in sequence, and the multiple finned tubes form a complete heating surface. Adjacent pipe row assemblies are sealed by welding. Therefore, the structure of the flue 30 can be further simplified, which is beneficial to reduce the load of the flue 30 .

As shown in FIG. 3 , in some embodiments of the present application, the first water-cooled pipe 40 further includes a main pipe 401 and at least one branch pipe 402, the extension direction of the main pipe 401 is consistent with the extension direction of the flue 30, and the branch pipes 402 communicates with the main pipeline 401. In the embodiment of the present application, the heat exchange area of the first water-cooled pipe 40 is increased to improve the heat exchange efficiency by setting the sub-pipe 402 .

In a specific embodiment, the first water-cooled pipe 40 includes a plurality of branch pipes 402, each branch pipe 402 is arranged around three connected inner walls of the flue 30, and the plurality of branch pipes 402 are along the extension direction of the flue 30 Interval arrangement. Thereby, the heat exchange area of the sub-pipe 402 can be increased, and the heat exchange efficiency can be further improved.

In a specific embodiment, two main pipes 401 are provided, and the two main pipes 401 are respectively located at different heights on the same side of the flue 30, thereby further increasing the water flow rate of the first water-cooled pipe 40, making it more More water participates in heat exchange, which is beneficial to improve heat exchange efficiency.

As shown in Figure 2 and Figure 3, in some embodiments of the present application, the CDQ system further includes a second water-cooled tube 50, the second water-cooled tube 50 includes a fourth downcomer 520 and a fourth riser 510, the second The fourth descending pipe 520 of the water cooling pipe 50 communicates with the first descending pipe 620 of the steam drum 60, the fourth ascending pipe 510 of the second water cooling pipe 50 communicates with the first ascending pipe 610 of the steam drum 60, and the second water cooling pipe 50 is located at The interior of the precipitator 20. Thus, the boiler feed water in the steam drum 60 can flow into the second water-cooled tube 50 through the first downcomer 620, and exchange heat with the high-temperature circulating gas flowing into the dust collector 20 in the second water-cooled tube 50, and the boiler feed water absorbs After heating, saturated steam is generated, so that the boiler feed water in the second water-cooled pipe 50 becomes a steam-water mixture, and the steam-water mixture enters the steam drum 60 through the fourth riser 510 and undergoes steam-water separation in the steam drum 60, and saturated steam is obtained after separation. In the embodiment of the present application, by setting the second water-cooled tube 50 inside the dust collector 20 and communicating the second water-cooled tube 50 with the steam drum 60, not only the temperature of the high-temperature circulating gas entering the boiler can be further reduced, which is beneficial to Protecting the furnace wall of the boiler can further increase the realization path of the steam-water circulation, improve the reliability of the steam-water circulation of the CDQ system, make full use of the heat of the high-temperature circulating gas, and improve the heat utilization rate. In addition, by connecting the second water-cooled pipe 50 with the steam drum 60, the second water-cooled pipe 50 becomes the heat exchange surface of the boiler feed water and the high-temperature circulating gas, and shares the heat exchange amount of the water-cooled wall, so that the heat-exchange area of the water-cooled wall can be Further shrinkage is beneficial to reduce the volume of the boiler.

In some embodiments of the present application, dust collector 20 is a cyclone separator. The cyclone separator has the advantages of high dust removal efficiency, simple structure, and easy manufacture, installation, maintenance and management. Specifically, the dust collector 20 may be composed of an intake pipe, an exhaust pipe, a cylinder, a cone and an ash hopper. The dust removal mechanism is to make the airflow containing coke powder rotate in the dust collector 20, and the coke powder is separated from the airflow by centrifugal force and collected on the wall of the device, and then the coke powder falls into the ash hopper by gravity.

As shown in Fig. 5, in some embodiments of the present application, the flue 30 includes a furnace wall 300, which is a light furnace wall. In the embodiment of the present application, the inside of the flue 30 is provided with a first water-cooled pipe 40, and the first water-cooled pipe 40 continuously absorbs heat, thereby reducing the temperature of the furnace wall 300, thereby reducing the requirement for heat insulation of the furnace wall 300, so that The flue 30 can adopt a light furnace wall. Compared with the heavy-duty furnace wall, the light-duty furnace wall does not need to use heat-insulating bricks, which is beneficial to reducing the structural size of the flue 30 and reducing the load of the flue 30 .

In a specific embodiment, the furnace wall 300 includes a refractory layer 301 and an insulating layer 302, the refractory layer 301 is located inside the flue 30, the first water-cooled pipe 40 is located between the refractory layer 301 and the insulating layer 302, and the refractory layer 301 and The temperature of the high-temperature circulating gas inside the flue 30 rises after contact, and the first water-cooled pipe 40 cools the furnace wall 300 by absorbing the heat of the refractory layer 301, thereby reducing the temperature of the outer surface of the furnace wall 300 and reducing external heat dissipation. The thermal insulation layer 302 is used to reduce the heat loss of the first water-cooled tube 40 , thereby improving the heat utilization rate of the first water-cooled tube 40 .

In some embodiments of the present application, the coke CDQ system also includes a secondary dust collector and a fan, the fan includes a fourth air inlet and a fourth air outlet, the boiler also includes a third air outlet, and the secondary dust collector is arranged at the bottom of the boiler. Between the third air outlet and the fourth air inlet of the fan, the fourth air outlet of the fan communicates with the CDQ furnace 10 . In the embodiment of this application, the CDQ system also includes a secondary dust collector and a fan. After the high-temperature circulating gas exchanges heat with boiler feed water in the boiler, it is output to the secondary dust collector from the third air outlet. The secondary dust collector is used for The coke powder carried by the circulating gas is subjected to the second dust removal, and the recycled gas after the second dust removal is output to the fourth air inlet of the fan, and the fan is used to blow the circulating gas into the CDQ furnace 10 through the fourth air outlet. In the embodiment of the present application, secondary dust removal is performed on the circulating gas by setting a secondary dust collector, which is beneficial to protect the fan. By setting the fan to blow the circulating gas into the CDQ furnace 10, it is beneficial to improve the utilization rate of the circulating gas.

In some embodiments of the present application, the CDQ system further includes a heat pipe, and the heat pipe is arranged between the fourth air outlet of the fan and the CDQ furnace 10 . In the embodiment of the present application, the coke CDQ system also includes a heat pipe, and the circulating gas output from the fourth air outlet of the fan enters the dry quenching furnace 10 through the heat pipe, and the heat pipe is used to dissipate heat from the circulating gas to reduce the temperature of the circulating gas , so that the circulating gas entering the CDQ 10 can absorb more heat of the coke, which is beneficial to cooling the high-temperature coke in the CDQ 10 .

In a specific embodiment, one end of the heat pipe is the evaporation end, and the other end of the heat pipe is the condensation end. The inside of the heat pipe is provided with a phase change medium, and the circulating gas passes through the evaporation end of the heat pipe during the flow process. After absorbing heat, it evaporates and vaporizes. The steam flows to the condensation end under the power of thermal diffusion. The condensation pipe can be connected to the outside. The steam condenses at the condensation end and releases heat. The condensed phase change medium flows back to the evaporation end to continue absorbing heat, and so on. , until the temperatures at both ends of the heat pipe are equal. Thus, the heat pipe can continuously dissipate heat to the circulating gas to reduce the temperature of the circulating gas, so that the circulating gas entering the CDQ 10 can absorb more heat of coke, which is beneficial to cooling the high-temperature coke in the CDQ 10 .

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. any such actual relationship or order exists between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

Each embodiment of the present application is described in a related manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the difference from other embodiments.

The above are only preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application are included within the protection scope of this application.

Claims (10)

1. A dry quenching system, comprising:

the coke dry quenching furnace (10), wherein the coke dry quenching furnace (10) is provided with a first air outlet (101);

the dust remover (20), the dust remover (20) is provided with a second air inlet (201), and the second air inlet (201) of the dust remover (20) is communicated with the first air outlet (101) of the dry quenching furnace (10);

the flue (30), the flue (30) is arranged between the first air outlet (101) of the dry quenching furnace (10) and the second air inlet (201) of the dust remover (20);

a first water-cooled tube (40) disposed inside the flue (30), the first water-cooled tube (40) configured to cool the flue (30).

2. The dry quenching system as claimed in claim 1, further comprising a boiler provided with a third air inlet, the dust separator (20) further comprising a second air outlet, the third air inlet of the boiler communicating with the second air outlet of the dust separator (20).

3. The coke dry quenching system of claim 2, wherein the boiler comprises an economizer, a drum (60), and a water wall, the economizer being in communication with the drum (60), the drum (60) comprising a first downcomer (620) and a first riser (610), the water wall comprising a second downcomer and a second riser, the second downcomer of the water wall being in communication with the first downcomer (620) of the drum (60), the second riser of the water wall being in communication with the first riser (610) of the drum (60), the first water tube (40) comprising a third downcomer (420) and a third riser (410), the third downcomer (420) of the first water tube (40) being in communication with the first downcomer (620) of the drum (60), the third riser (410) of the first water tube (40) being in communication with the first riser (610) of the drum (60).

4. The dry quenching system as claimed in claim 3, wherein the first water cooled tubes (40) are membrane water cooled tube banks.

5. The dry quenching system as claimed in claim 3, characterized in that the first water cooling tube (40) further comprises a main tube (401) and at least one branch tube (402), the main tube (401) extending in the same direction as the flue (30), the branch tube (402) communicating with the main tube (401).

6. The dry quenching system of claim 3, further comprising a second water cooled tube (50), the second water cooled tube (50) comprising a fourth downcomer (520) and a fourth riser (510), the fourth downcomer (520) of the second water cooled tube (50) being in communication with the first downcomer (620) of the drum (60), the fourth riser (510) of the second water cooled tube (50) being in communication with the first riser (610) of the drum (60), the second water cooled tube (50) being located inside the dust separator (20).

7. The dry quenching system of claim 1, wherein the dust separator (20) is a cyclone separator.

8. The dry quenching system as claimed in claim 1, wherein the chimney (30) comprises a brickwork (300), the brickwork (300) being a lightweight brickwork.

9. The dry quenching system of claim 2, further comprising a secondary dust collector and a fan, the fan comprising a fourth air inlet and a fourth air outlet, the boiler further comprising a third air outlet, the secondary dust collector being disposed between the third air outlet of the boiler and the fourth air inlet of the fan, the fourth air outlet of the fan being in communication with the dry quenching furnace (10).

10. The dry quenching system of claim 9, further comprising a heat pipe disposed between the fourth air outlet of the fan and the dry quenching oven (10).

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