A dry quenching device

Abstract

The embodiment of the present application provides a dry quenching furnace device, which comprises a pre-storage chamber, an annular air duct, an inclined path area and a cooling chamber; the annular air duct is an annular cavity formed between the inner wall and the outer wall of the dry quenching coke oven, the outer wall is provided with a first air outlet and a second air outlet; the annular air duct is internally provided with a first partition wall, a second partition wall, a first baffle wall and a second baffle wall. The dry quenching furnace device provided by the present application can divide the high-temperature gas in the dry quenching furnace into four parts, and each two parts are introduced into a dust collector through the annular air duct outlet, thereby changing the gas flow rate in the annular air duct and the flow form of the gas, playing a role of guiding and dividing the high-temperature gas, reducing the flow rate of the high-temperature gas, reducing the pressure of the gas on the wall body on the inner wall and the outer wall, and further avoiding the deformation, cracking and collapse of the inner wall, thereby prolonging the service life of the annular air duct.

Description

Technical Field

[0001] This invention relates to the field of coking technology, and in particular to a dry quenching furnace apparatus. Background Technology

[0002] Coke, as an important raw material and fuel in the metallurgical industry, plays a vital role in national economic development. Coal is dry-distilled at high temperatures in a coke oven to form coke. The resulting coke is at a high temperature and requires effective cooling methods to prevent it from reacting with oxygen at high temperatures. Coke quenching methods are generally divided into wet quenching and dry quenching. Dry quenching achieves quenching by using low-temperature inert gas to exchange heat with the red-hot coke. It also has significant advantages in energy conservation and environmental protection, and has seen considerable development in recent years.

[0003] Modern dry quenching coke production has achieved a high degree of automation and intelligence, and its main structure is basically complete. The main body of the dry quenching furnace is constructed of refractory materials and is divided into a pre-storage chamber, an annular air duct, an inclined duct zone, and a cooling chamber from top to bottom. The annular air duct consists of an inner wall and an outer wall. The inner wall carries red-hot coke, while the outer wall carries high-temperature gas after heat exchange. In addition to bearing the pressure from the red-hot coke, the inner wall also bears outward pressure along the radius due to the difference in gas flow velocity between the inner and outer sides.

[0004] Therefore, in actual production, the collapse of the annular air duct occurs frequently. During major overhauls of the dry quenching furnace, the inner walls of the annular air duct often deform, crack, or even collapse. Summary of the Invention

[0005] The purpose of this invention is to provide a dry quenching furnace to solve the problems of deformation, cracking, and even collapse of the annular air duct in existing dry quenching furnaces. The specific technical solution is as follows:

[0006] The first aspect of the present invention provides a dry quenching furnace apparatus, which includes: a pre-storage chamber, an annular air duct, an inclined duct zone, and a cooling chamber;

[0007] The annular air duct is an annular cavity formed between the inner and outer walls of the dry quenching coke oven. The outer wall is provided with a first air outlet and a second air outlet.

[0008] The annular air duct is equipped with a first partition wall, a second partition wall, a first baffle wall, and a second baffle wall.

[0009] The first partition wall is connected to the inner wall on one side and to the outer wall on the other side. The annular air duct is divided into the first air duct area and the second air duct area by the first partition wall. The second partition wall is connected to the inner wall on one side and to the outer wall on the other side. The annular air duct is divided into the third air duct area and the fourth air duct area by the second partition wall.

[0010] One side of the first baffle wall is connected to the inner wall, and the other side extends along the axial direction of the first air outlet. The first air outlet is divided into a first air outlet area and a second air outlet area by the first baffle wall. One side of the second baffle wall is connected to the inner wall, and the other side extends along the axial direction of the second air outlet. The second air outlet is divided into a third air outlet area and a fourth air outlet area by the second baffle wall.

[0011] In some embodiments of the present invention, the first air duct region is connected to the first air outlet region, the second air duct region is connected to the third air outlet region, the third air duct region is connected to the second air outlet region, and the fourth air duct region is connected to the fourth air outlet region.

[0012] In some embodiments of the present invention, the connection between the first retaining wall and the inner wall is a curved surface, and the connection between the second retaining wall and the inner wall is a curved surface.

[0013] In some embodiments of the present invention, the ratio of the height of the first baffle wall to the height of the first air outlet is 1:1.1 to 1.3; the ratio of the height of the second baffle wall to the height of the second air outlet is 1:1.1 to 1.3.

[0014] In some embodiments of the present invention, the ratio of the thickness of the first retaining wall to the thickness of the inner wall is 1:2; the ratio of the thickness of the second retaining wall to the thickness of the inner wall is 1:2.

[0015] In some embodiments of the present invention, the first air outlet and the second air outlet are arranged symmetrically to the center, and the first baffle and the second baffle are arranged symmetrically to the center.

[0016] In some embodiments of the present invention, the first partition wall and the second partition wall are arranged in a centrally symmetrical manner.

[0017] In some embodiments of the present invention, along the radial direction of the dry quenching furnace, the first baffle wall is set at 90° to the first partition wall, the first baffle wall is set at 90° to the second partition wall, the second baffle wall is set at 90° to the first partition wall, and the second baffle wall is set at 90° to the second partition wall.

[0018] Beneficial effects of the embodiments of the present invention:

[0019] The dry quenching furnace device provided in this embodiment of the invention is equipped with a first air outlet, a second air outlet, a first baffle wall, a second baffle wall, a first partition wall, and a second partition wall. It can divide the high-temperature gas in the dry quenching furnace into four parts, and introduce them into the dust collector in pairs through the outlet of the annular air duct. This changes the gas velocity and distribution state in the annular air duct, as well as the gas flow pattern. It plays a role in guiding and diverting the high-temperature gas, reducing the average and maximum flow velocity of the high-temperature gas in the annular air duct, reducing the pressure of the gas on the inner and outer sides of the inner wall, thereby avoiding deformation, cracking, and collapse of the inner wall, and extending the service life of the annular air duct.

[0020] Of course, implementing any product or method of the present invention does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this invention. For those skilled in the art, other embodiments can be obtained based on these drawings.

[0022] Figure 1 This is a cross-sectional view of the annular air duct in a dry quenching furnace device provided in an embodiment of the present invention;

[0023] Figure 2 For the dry quenching furnace device along Figure 1 The first cross-sectional view at point AA.

[0024] Figure 3 For the dry quenching furnace device along Figure 1 The second cross-sectional view at point BB.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10-Pre-storage chamber, 20-Annular air duct, 30-Sloping duct area, 40-Cooling chamber, 21-Inner wall, 22-Outer wall, 231-First air outlet, 232-Second air outlet, 241-First partition wall, 242-Second partition wall, 251-First baffle wall, 252-Second baffle wall, 261-First air duct area, 262-Second air duct area, 263-Third air duct area, 264-Fourth air duct area, 271-First air outlet area, 272-Second air outlet area, 273-Third air outlet area, 274-Fourth air outlet area. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art based on the present invention are within the scope of protection of the present invention.

[0028] To address the problems of deformation, cracking, and even collapse of the annular air duct in dry quenching furnaces, embodiments of the present invention provide a dry quenching furnace device, such as... Figures 1 to 3As shown, this embodiment of the invention provides a dry quenching furnace device, including: a pre-storage chamber 10, an annular air duct 20, an inclined duct zone 30, and a cooling chamber 40; the annular air duct 20 is an annular cavity formed between the inner wall 21 and the outer wall 22 of the dry quenching coke oven, and the outer wall 22 is provided with a first air outlet 231 and a second air outlet 232 for guiding the high-temperature gas in the annular air duct to the dust collector. The annular air duct is provided with a first partition wall 241, a second partition wall 242, a first baffle wall 251, and a second baffle wall 252 for diverting the gas in the annular air duct.

[0029] Among them, see Figure 1 One side of the first partition wall 241 is connected to the inner wall 21, and the other side is connected to the outer wall 22. Thus, the annular duct 20 is divided into a first duct region 261 and a second duct region 262 by the first partition wall 241, allowing the gas in the annular duct to flow along the first duct region 261 and the second duct region 262 respectively, achieving a flow diversion effect. Similarly, one side of the second partition wall 242 is connected to the inner wall 21, and the other side is connected to the outer wall 22. The annular duct 20 is divided into a third duct region 263 and a fourth duct region 264 by the second partition wall 242, allowing the gas in the annular duct to flow along the third duct region 263 and the fourth duct region 264 respectively, achieving a flow diversion effect.

[0030] See Figure 1 One side of the first baffle wall 251 is connected to the inner wall 21, and the other side extends along the axial direction of the first air outlet 231. Thus, the first air outlet 231 is divided into a first air outlet area 271 and a second air outlet area 272 by the first baffle wall 251. Gas from the first air duct area 261 flows out along the first air outlet area 271, and gas from the third air duct area 263 flows out along the second air outlet area 272, achieving a flow diversion effect. Similarly, one side of the second baffle wall 252 is connected to the inner wall 21, and the other side extends along the axial direction of the second air outlet 232. The second air outlet 232 is divided into a third air outlet area 273 and a fourth air outlet area 274 by the second baffle wall 252. Gas from the second air duct area 262 flows out along the third air outlet area 273, and gas from the fourth air duct area 264 flows out along the fourth air outlet area 274, achieving a flow diversion effect. The present invention does not impose any particular limitation on the extension length of the first retaining wall 251 and the second retaining wall 252.

[0031] like Figure 1 , Figure 2As shown, the annular air duct 20 of the dry quenching furnace device provided in this embodiment of the invention is provided with a first partition wall 241 and a second partition wall 242 inside. The first partition wall 241 and the second partition wall 242 respectively isolate the annular air duct 20, dividing the gas entering the annular air duct 20 from the inclined outlet into four parts, reducing the average flow velocity of the high-temperature gas in the annular air duct 20, thereby reducing the pressure difference between the inner and outer sides of the inner wall 21, thus reducing the problem of deformation, cracking, or even collapse of the inner wall 21 of the annular air duct 20, and extending the service life of the annular air duct 20.

[0032] like Figure 1 , Figure 3 As shown, a first baffle wall 251 and a second baffle wall 252 are installed inside the annular duct 20. The first baffle wall 251 and the second baffle wall 252 can guide the flow of gas into and out of the duct, preventing the two gas streams at the outlet from merging and forming vortices, thus increasing the system resistance of the annular duct 20 and making the gas flow at the outlet more uniform. In addition, the installation of the baffle walls also makes the gas flow within the annular duct 20 more uniform, reducing the pressure difference on both sides of the inner wall 21, which is beneficial to its structural stability.

[0033] The dual air outlets inside the annular duct 20 of this invention can extend the service life of the inner wall 21 from the following two perspectives: 1. Under the premise that the area of ​​the annular duct 20 remains unchanged, the average gas velocity inside the annular duct 20 can be reduced, thereby reducing the pressure of the wind speed on the inner wall 21 and extending the service life of the inner wall 21; 2. Under the premise that the average gas velocity inside the annular duct 20 remains unchanged, the area of ​​the annular duct 20 can be reduced, thereby reducing the height of the annular duct 20, reducing the amount of brickwork required for the inner wall 21 and the outer wall 22, thereby improving the collapse resistance of the inner wall 21 and extending the service life of the annular duct 20. The dual outlets inside the annular duct 20 can also reduce the area of ​​the annular duct 20 and reduce the amount of brickwork required, thereby saving the construction cost of the dry quenching coke oven. The gas velocity drawn from the first air outlet 231 and the second air outlet 232 is relatively low, resulting in better dust removal effect. If matched with a cyclone dust collector with better dust removal effect, the secondary dust collector commonly used in the dry quenching coke system can be eliminated.

[0034] In this embodiment of the invention, the dry quenching furnace includes a pre-storage chamber 10 for storing coke entering from the top feed inlet of the dry quenching furnace, which can compensate for production fluctuations; an annular air duct 20 draws out the circulating gas introduced from the inclined duct zone 30 from the furnace body; the inclined duct zone 30 is located between the pre-storage chamber 10 and the cooling chamber 40, and the low-temperature circulating gas entering from the bottom gas supply device of the dry quenching furnace absorbs the sensible heat of the red coke and is then introduced into the annular air duct 20 through the inclined duct; the cooling chamber 40 is used for heat exchange between the red coke and the low-temperature circulating gas, and the cooled coke is discharged from the furnace body through the discharge device.

[0035] The embodiments of this invention do not impose any particular restrictions on the materials of the first partition wall 241, the second partition wall 242, the first retaining wall 251, and the second retaining wall 252, as long as the inventive objective is achieved. For example, the materials of the first partition wall 241, the second partition wall 242, the first retaining wall 251, and the second retaining wall 252 can be refractory bricks. The invention also does not impose any particular restrictions on the thickness of the first partition wall 241 and the second partition wall 242, as long as the inventive objective is achieved. For example, the first partition wall 241 and the second partition wall 242 can have the same thickness.

[0036] Overall, the partition walls, baffle walls, and dual-outlet structure of the annular air duct 20 of this invention can divide the high-temperature gas in the dry quenching furnace into four parts, and introduce them into the dust collector in pairs through the air outlet of the annular air duct 20. This changes the gas flow rate and flow pattern in the annular air duct 20, which plays a role in guiding and diverting the high-temperature gas, reducing the flow rate of the high-temperature gas, reducing the pressure of the gas on the inner and outer sides of the inner wall 21, thereby preventing the inner wall 21 from deforming, cracking, or collapsing, and extending the service life of the annular air duct 20.

[0037] In some embodiments of the present invention, the first air duct region 261 is connected to the first air outlet region 271, the second air duct region 262 is connected to the third air outlet region 273, the third air duct region 263 is connected to the second air outlet region 272, and the fourth air duct region 264 is connected to the fourth air outlet region 274. The first partition wall 241, the second partition wall 242, the first baffle wall 251, and the second baffle wall 252 of the present invention divide the gas within the annular air duct 20 into the first air duct region 261, the second air duct region 262, the third air duct region 263, and the fourth air duct region 264. The gas in the first air duct region 261 and the third air duct region 263 is drawn out from the first air outlet 231, and the gas in the second air duct region 262 and the fourth air duct region 264 is drawn out from the second air outlet 232, forming two pairs that are drawn out from two separate air outlets. This reduces the gas flow rate, lowers the gas pressure on the inner wall 21, and extends the service life of the inner wall 21.

[0038] In some embodiments of the present invention, the connection between the first baffle wall 251 and the inner wall 21 is a curved surface, and the connection between the second baffle wall 252 and the inner wall 21 is also a curved surface. The curved connection between the inner baffle wall and the inner wall 21 in the annular duct 20 of the present invention reduces resistance during gas flow, ensures smooth gas flow, reduces the impact of gas turbulence on the inner wall 21 and the outer wall 22, and thus extends the service life of the annular duct 20.

[0039] In some embodiments of the present invention, the ratio of the height of the first baffle wall 251 to the height of the first air outlet 231 is 1:1.1 to 1:3; the ratio of the height of the second baffle wall 252 to the height of the second air outlet 232 is 1:1.1 to 1:3. When the ratios of the height of the first baffle wall 251 to the height of the first air outlet 231 and the ratios of the height of the second baffle wall 252 to the height of the second air outlet 232 are within the above ranges, they can better guide the airflow at the air outlet, preventing the convergence of two air streams and the generation of vortices that would increase the system resistance of the annular duct 20.

[0040] In some embodiments of the present invention, the ratio of the thickness of the first baffle wall 251 to the thickness of the inner wall 21 is 1:2; the ratio of the thickness of the second baffle wall 252 to the thickness of the inner wall 21 is also 1:2. By controlling the thickness ratios of the first baffle wall 251 and the inner wall 21, and the second baffle wall 252 and the inner wall 21, the present invention ensures stable gas outflow from the outlet. When the thickness ratio of the first baffle wall 251 to the inner wall 21, or the thickness ratio of the second baffle wall 252 to the inner wall 21, is too large, the width of the first or second air outlet is smaller, increasing the gas velocity and consequently increasing the pressure of the gas on the first or second baffle wall. Furthermore, because the thickness of the first or second baffle wall is too large, when the gas in the first and second air outlet areas, or the gas in the third and fourth air outlet areas, merges, the resulting vortex is larger, increasing the system resistance of the air outlet. When the ratio of the thickness of the first retaining wall 251 to the thickness of the inner wall 21 or the ratio of the thickness of the second retaining wall 252 to the thickness of the inner wall 21 is too small, the thickness of the first retaining wall 251 or the second retaining wall 252 is small, and the pressure it can withstand from the wind speed is small, making it prone to deformation, cracking and collapse.

[0041] In some embodiments of the present invention, the first air outlet 231 and the second air outlet 232 are arranged in a centrally symmetrical manner, as are the first baffle 251 and the second baffle 252. The central symmetry of the first air outlet 231 and the second air outlet 232 in the present invention enables the gas within the annular duct to be evenly distributed and drawn out, thereby improving the stability of the gas flow rate.

[0042] In some embodiments of the present invention, the first partition wall 241 and the second partition wall 242 are arranged in a centrally symmetrical manner. This centrally symmetrical arrangement of the first partition wall 241 and the second partition wall 242 in the present invention enables uniform distribution of gas within the annular duct and ensures a uniform distribution of the supporting force on the inner wall, thereby improving the stability of the gas flow rate and the stability of the support.

[0043] In some embodiments of the present invention, along the radial direction of the dry quenching furnace, the first baffle wall 251 is set at 90° to the first partition wall 241, the first baffle wall 251 is set at 90° to the second partition wall 242, the second baffle wall 252 is set at 90° to the first partition wall 241, and the second baffle wall 252 is set at 90° to the second partition wall 242. Through the above arrangement, the present invention can evenly divide the gas in the annular air duct 20 into four parts, and lead them out in pairs from the first air outlet 231 and the second air outlet 232 respectively, making the gas flow in the annular air duct 20 more uniform, reducing internal gas resistance, and thus reducing the occurrence of deformation, cracking, and collapse of the annular air duct 20.

[0044] The partition wall, baffle wall, and dual-outlet structure of the annular air duct 20 of this invention can divide the high-temperature gas in the dry quenching furnace into four parts, and introduce them into the dust collector in pairs through the outlet of the annular air duct 20. This changes the gas flow rate and flow pattern in the annular air duct 20, which plays a role in guiding and diverting the high-temperature gas, reducing the flow rate of the high-temperature gas, reducing the pressure of the gas on the inner and outer sides of the inner wall 21, thereby preventing the inner wall 21 from deforming, cracking, or collapsing, and extending the service life of the annular air duct 20.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] The various embodiments of the present invention are described in a related manner. For the same or similar parts between the various embodiments, refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A dry quenching furnace device, characterized in that, include: Pre-storage chamber, annular air duct, inclined duct area and cooling chamber; The annular air duct is an annular cavity formed between the inner wall and the outer wall of the dry quenching furnace, and the outer wall is provided with a first air outlet and a second air outlet. The annular air duct is equipped with a first partition wall, a second partition wall, a first baffle wall, and a second baffle wall. The first partition wall is connected to the inner wall on one side and to the outer wall on the other side, and the annular air duct is divided into a first air duct area and a second air duct area by the first partition wall; the second partition wall is connected to the inner wall on one side and to the outer wall on the other side, and the annular air duct is divided into a third air duct area and a fourth air duct area by the second partition wall. One side of the first baffle wall is connected to the inner wall, and the other side extends along the axial direction of the first air outlet. The first air outlet is divided into a first air outlet area and a second air outlet area by the first baffle wall. One side of the second baffle wall is connected to the inner wall, and the other side extends along the axial direction of the second air outlet. The second air outlet is divided into a third air outlet area and a fourth air outlet area by the second baffle wall. The ratio of the height of the first baffle wall to the height of the first air outlet is 1:1.1 to 1.3; the ratio of the height of the second baffle wall to the height of the second air outlet is 1:1.1 to 1.

3. The first air duct area is connected to the first air outlet area, the second air duct area is connected to the third air outlet area, the third air duct area is connected to the second air outlet area, and the fourth air duct area is connected to the fourth air outlet area.

2. The dry quenching furnace apparatus according to claim 1, characterized in that, The connection between the first retaining wall and the inner wall is a curved surface, and the connection between the second retaining wall and the inner wall is also a curved surface.

3. The dry quenching furnace apparatus according to claim 1, characterized in that, The ratio of the thickness of the first retaining wall to the thickness of the inner wall is 1:2; the ratio of the thickness of the second retaining wall to the thickness of the inner wall is 1:

2.

4. The dry quenching furnace apparatus according to claim 1, characterized in that, The first air outlet and the second air outlet are arranged symmetrically to the center, and the first baffle and the second baffle are arranged symmetrically to the center.

5. The dry quenching furnace apparatus according to claim 1, characterized in that, The first partition wall and the second partition wall are arranged in a centrally symmetrical manner.

6. The dry quenching furnace apparatus according to claim 1, characterized in that, Along the radial direction of the dry quenching furnace, the first baffle wall is set at 90° to the first partition wall, the first baffle wall is set at 90° to the second partition wall, the second baffle wall is set at 90° to the first partition wall, and the second baffle wall is set at 90° to the second partition wall.

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