Pressure relief system of double-chamber lime kiln

Abstract

The utility model belongs to the technical field of lime kiln pressure relief, and particularly discloses a double-chamber lime kiln pressure relief system which comprises a first kiln body and a second kiln body, the middle of the first kiln body is communicated with the middle of the second kiln body, the first kiln body and the second kiln body are communicated with a dust removal assembly, the first kiln body is communicated with a three-way pipe, the three-way pipe is communicated with a first three-way valve, and the first three-way valve is communicated with the first kiln body. The three-way pipe is communicated with a three-way valve II, the three-way valve II is communicated with the kiln body II, the three-way valve II is communicated with the dust removal assembly, the three-way pipe is communicated with a pipeline I, the pipeline I is communicated with the dust removal assembly, and the pipeline I is provided with a valve. An existing double-chamber lime kiln is large in pressure relief air pressure before reversing. According to the utility model, the three-way pipe is communicated with the pipeline I, the pipeline I is communicated with the pipeline VII, the three-way valve I and the three-way valve II are respectively closed to the pipeline V and the pipeline VI, the valves are opened, and partial air pressure in the kiln body is discharged into the pipeline VII, so that the air pressure discharged to the atmosphere during reversing of the double-hearth lime kiln is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lime kiln pressure relief, in particular to a double-chamber lime kiln pressure relief system. Background Art

[0002] The twin-chamber lime kiln is one of the most advanced lime production equipment currently available, widely used in the production of industrial and building lime. It primarily consists of two mirror-image vertical chambers. During production, pulverized coal and combustion-supporting air are supplied to one chamber, creating a high-temperature environment that decomposes the limestone within. This chamber is called the combustion chamber. The other chamber is loaded with room-temperature materials, and the hot flue gas generated by the combustion chamber is introduced from the bottom and discharged from the top to preheat the materials. This chamber is called the regenerator chamber. After one cycle (approximately 14 minutes), the two chambers swap roles, enabling continuous lime production. Because it utilizes a dual-chamber calcination and cycle-reversing process, the high-temperature flue gas generated by calcination and the high-temperature exhaust gas from the finished product cooling process are used to preheat the materials before exiting the kiln chamber. This allows the exhaust gas temperature to typically be reduced to around 120°C, resulting in a very high heat utilization rate.

[0003] During the reversal process of a double-chamber kiln, the pressure in the combustion chamber must first be released through the release valve to reduce the pressure in the furnace to normal pressure. Although the release valve can quickly and effectively reduce the pressure in the furnace to normal pressure, the pressure of the combustion air during direct pressure relief is usually maintained at around 380mbar, and the pressure of the cooling air is around 350mbar. Long-term and frequent high-pressure discharge will cause rapid wear of the sealing components inside the valve, thereby reducing the service life of the valve. This situation will cause great damage to the valve body and significantly increase environmental noise. Utility Model Content

[0004] The utility model aims to provide a double-chamber lime kiln pressure relief system to solve the problem of high pressure relief air pressure before the double-chamber lime kiln is switched.

[0005] In order to achieve the above-mentioned purpose, the basic solution provided by the utility model is: a double-chamber lime kiln pressure relief system, including kiln body one and kiln body two, the middle parts of kiln body one and kiln body two are connected, kiln body one and kiln body two are connected with a dust removal component for removing dust and exhaust gas in kiln body one and kiln body two, kiln body one is connected with a three-way pipe, one end of the three-way pipe is connected with a three-way valve one, one end of the three-way valve one is connected with kiln body one, one end of the three-way valve one is connected with the dust removal component, one end of the three-way pipe is connected with a three-way valve two, one end of the three-way valve two is connected with kiln body two, one end of the three-way valve two is connected with the dust removal component, the three-way pipe is connected with a pipe one, the other end of the pipe one is connected with the dust removal component, and a valve is provided on the pipe one.

[0006] The principle and beneficial effect of the present invention are as follows: the kiln body 1 and the kiln body 2 described in the present invention realize double-chamber reversing calcination by closing the valve plate of the three-way valve 1 to the side of the dust removal component and the valve plate of the three-way valve 2 to the side of the three-way pipe, or closing the valve plate of the three-way valve 1 to the side of the three-way pipe and the valve plate of the three-way valve 2 to the side of the dust removal component. The valve plates of the three-way valve 1 and the three-way valve 2 are both closed to the three-way pipe under normal conditions. The present invention connects the three-way pipe with the dust removal component by connecting the pipe 1. When the air pressure in the kiln body 1 enters the three-way pipe, the valve plates of the three-way valve 1 and the three-way valve 2 are driven to close to the dust removal component, and then the valves are opened, so that the air pressure in the kiln body 1 enters the dust removal component through the pipe 1. Through the above operation, before the double-chamber lime kiln is reversed, part of the air pressure in the kiln body is discharged into the dust removal component in advance, so that the air pressure discharged to the atmosphere when the double-chamber lime kiln is reversed is reduced.

[0007] Option 2, which is the preferred option of the basic option, also includes a second pipe, one end of which is connected to kiln body 1, and the other end of which is connected to a combustion-supporting fan. The installation of the second pipe facilitates the combustion-supporting fan to supply combustion-supporting air into kiln body 1, thereby enhancing the preheating of the material in the kiln body.

[0008] Option 3, a preferred alternative to Option 2, features a release valve 1 on Pipe 2. This three-way valve releases pressure to the atmosphere while preventing the pressure in Pipe 2 from flowing back into the combustion-supporting blower. This release valve facilitates the release of pressure from the kiln before the kiln is switched, reducing the pressure inside the kiln.

[0009] Option 4, a preferred alternative to the basic option, also includes Pipe 3, one end of which is connected to Kiln Body 1, the other end of which is connected to Kiln Body 2. Pipe 3 is connected to Pipe 4, the other end of which is connected to a cooling fan. The arrangement of Pipes 3 and 4 facilitates the cooling fan to supply cooling air into Kiln Body 1 and Kiln Body 2, facilitating rapid cooling of the material after high-temperature calcination.

[0010] Option 5, a preferred option of Option 4, features a release valve 2 on Pipe 4. This three-way valve releases pressure to the atmosphere while preventing the pressure inside Pipe 4 from flowing back into the cooling fan. This release valve facilitates the release of pressure from the kiln before the double-chamber lime kiln is switched, reducing the pressure inside the kiln.

[0011] Option 6, which is the preferred option of the basic option, includes a dust removal assembly comprising pipes 5 and 6. One end of pipe 5 is connected to three-way valve 1, one end of pipe 6 is connected to three-way valve 2, the other end of pipe 5 is connected to pipe 7, the other end of pipe 6 is connected to pipe 7, the other end of pipe 7 is connected to a dust removal blower, and the other end of pipe 1 is connected to pipe 7. The arrangement of pipes 5, 6, and 7 facilitates the discharge of dust and exhaust gases from the kiln body, as well as the remaining air pressure within the kiln body, through pipes 5, 6, and 7. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of a double-chamber lime kiln pressure relief system. DETAILED DESCRIPTION

[0013] The present invention is further described in detail below through specific implementation methods:

[0014] The figure marks in the drawings of the specification include: kiln body 1, kiln body 2, three-way pipe 3, three-way valve 1, three-way valve 2, pipeline 1, 6, valve 7, pipeline 2, 8, combustion-supporting fan 9, release valve 1, 10, pipeline 3, 11, pipeline 4, 12, cooling fan 13, release valve 2, 14, pipeline 5, 15, pipeline 6, 16, pipeline 7, 17, dust removal fan 18.

[0015] Example

[0016] like Figure 1 As shown: A double-chamber lime kiln pressure relief system includes a kiln body 1 and a kiln body 2. The middle parts of the kiln body 1 and the kiln body 2 are connected. The kiln body 1 and the kiln body 2 are connected with a dust removal component for removing dust and exhaust gas from the kiln body 1 and the kiln body 2. The dust removal component includes a pipe 5 15 and a pipe 6 16. The other end of the pipe 5 15 is connected with a pipe 7 17. The other end of the pipe 6 16 is connected with the pipe 7 17. The other end of the pipe 7 17 is connected with a dust removal fan 18. The dust removal fan 18 is a centrifugal blower.

[0017] The kiln body 1 is connected with a three-way pipe 3, one end of which is connected with a three-way valve 4, one end of which is connected with the kiln body 1, one end of a pipe 5 15 is connected with a three-way valve 4, one end of a pipe 3 is connected with a three-way valve 2 5, one end of a three-way valve 2 5 is connected with the kiln body 2 2, one end of a pipe 6 16 is connected with a three-way valve 2 5, the three-way pipe 3 is connected with a pipe 6, the other end of a pipe 6 is connected with a pipe 7 17, and a valve 7 is provided on a pipe 6.

[0018] The utility model further comprises a pipeline 2 8, one end of which is connected to the kiln body 1, and the other end of which is connected to a combustion-supporting blower 9, which is a positive displacement blower. The pipeline 2 8 is provided with a release valve 10, which is a three-way release valve. The utility model further comprises a pipeline 3 11, one end of which is connected to the kiln body 1, and the other end of which is connected to the kiln body 2, the pipeline 3 11 is connected to a pipeline 4 12, and the other end of which is connected to a cooling blower 13, which is a positive displacement blower. The pipeline 4 12 is provided with a release valve 2 14, which is a three-way release valve.

[0019] The implementation method of this embodiment is as follows:

[0020] When it is necessary to release the air pressure in Kiln Body 1 and Kiln Body 2 before switching to calcining, while ensuring that the air pressure released in a single step is not too high, the valve plates of Three-way Valve 1 and Three-way Valve 2 are first closed to Pipeline 5 and Pipeline 6, respectively. Part of the air pressure in Kiln Body 1 and Kiln Body 2 enters Three-way Pipe 3. Then, Valve 7 is opened, and part of the air pressure enters Pipeline 1 and Pipeline 7, and then part of the air pressure enters the atmosphere through the exhaust port of Dust Removal Fan 18. Then, Release Valve 1 and Release Valve 2 are opened, and the remaining air pressure in Kiln Body 1 and Kiln Body 2 is released to the atmosphere through Release Valve 1 and Release Valve 14.

[0021] When it is necessary to switch calcination from kiln body 1 to kiln body 2, the combustion-supporting air is first turned on 9, and the combustion-supporting air enters kiln body 1 through pipe 2 8, and then enters the three-way pipe 3. At the same time, the valve plate of three-way valve 1 4 is closed to pipe 5 15, and the valve plate of three-way valve 2 5 is closed to three-way pipe 3, and the combustion-supporting air then enters kiln body 1 again. After a period of calcination, the combustion-supporting air enters kiln body 2 2 through the middle connecting point of kiln body 1 and kiln body 2 2. After a period of calcination, the combustion-supporting air enters pipe 7 17 through pipe 6 16, and is finally discharged into the atmosphere through the exhaust port of dust removal fan 18. At this time, the air discharged into the atmosphere also includes the air pressure in kiln body 2 2.

[0022] When it is necessary to switch calcination from kiln body 2 to kiln body 1, first turn on the combustion-supporting fan 9, and the combustion-supporting air enters the kiln body 1 through pipe 2 8, and then enters the three-way pipe 3. At the same time, the valve plate of three-way valve 1 4 is closed to the three-way pipe 3, and the valve plate of three-way valve 2 5 is closed to pipe 6 16, and the combustion-supporting air immediately enters the kiln body 2 2. After a period of calcination, the combustion-supporting air enters the kiln body 1 through the middle connecting point between kiln body 1 and kiln body 2 2. After a period of calcination, the combustion-supporting air enters the kiln body 1 through pipe 5 15 and pipe 7 17, and is finally discharged into the atmosphere through the exhaust port of the dust removal fan 18. At this time, the air discharged into the atmosphere also includes the air pressure in the kiln body 1.

[0023] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A double-chamber lime kiln pressure relief system, characterized in that: The invention comprises a kiln body (1) and a kiln body (2), wherein the middle parts of the kiln body (1) and the kiln body (2) are connected, and the kiln body (1) and the kiln body (2) are connected with a dust removal assembly for removing dust and exhaust gas in the kiln body (1) and the kiln body (2), the kiln body (1) is connected with a three-way pipe (3), one end of the three-way pipe (3) is connected with a three-way valve (4), one end of the three-way valve (4) is connected with the kiln body (1), and one end of the three-way valve (4) is connected with the dust removal assembly, one end of the three-way pipe (3) is connected with a three-way valve (5), one end of the three-way valve (5) is connected with the kiln body (2), and one end of the three-way valve (5) is connected with the dust removal assembly, the three-way pipe (3) is connected with a pipe (6), the other end of the pipe (6) is connected with the dust removal assembly, and the pipe (6) is provided with a valve (7).

2. A double-chamber lime kiln pressure relief system according to claim 1, characterized in that: It also includes a second pipe (8), one end of which is connected to the kiln body (1), and the other end of which is connected to the combustion-supporting blower (9).

3. A double-chamber lime kiln pressure relief system according to claim 2, characterized in that: The second pipe (8) is provided with a release valve (10).

4. A double-chamber lime kiln pressure relief system according to claim 1, characterized in that: The invention also includes a pipeline three (11), one end of which is connected to the kiln body one (1), and the other end of which is connected to the kiln body two (2). The pipeline three (11) is connected to the pipeline four (12), and the other end of which is connected to the cooling fan (13).

5. A double-chamber lime kiln pressure relief system according to claim 4, characterized in that: The pipeline four (12) is provided with a release valve two (14).

6. A double-chamber lime kiln pressure relief system according to claim 1, characterized in that: The dust removal component includes a pipe five (15) and a pipe six (16), one end of the pipe five (15) is connected to the three-way valve one (4), one end of the pipe six (16) is connected to the three-way valve two (5), the other end of the pipe five (15) is connected to the pipe seven (17), the other end of the pipe six (16) is connected to the pipe seven (17), the other end of the pipe seven (17) is connected to the dust removal fan (18), and the other end of the pipe one (6) is connected to the pipe seven (17).

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