Combustion chamber structure of an ultra-wide carbonization chamber coke oven

Abstract

The present application relates to coking technology field, especially to a kind of ultra-wide carbonization chamber coke oven's combustion chamber structure, combustion chamber and carbonization chamber are arranged alternately, the combustion chamber is the honeycomb structure of multiple vertical flues, each vertical flue is regular hexagon or part of regular hexagon, the side wall of combustion chamber is flat towards carbonization chamber side.By the vertical flue of honeycomb arrangement, the overall strength of coke oven combustion chamber is improved, it can withstand higher lateral pressure, and then realize that the average width of combustion chamber reaches 600mm or even 2500mm, corresponding the average width of carbonization chamber can be expanded to 500mm or even 4000mm;On the basis of realizing that coke oven has ultra-wide carbonization chamber, the heating uniformity of coke oven can be guaranteed, which is conducive to further improve coke output, reduce energy consumption and emission.

Description

Technical Field

[0001] This invention relates to the field of coking technology, and in particular to a combustion chamber structure for an ultra-wide carbonization chamber coke oven. Background Technology

[0002] The trend towards larger coke ovens primarily involves increasing the volume of the carbonization chamber. Early increases in chamber volume were mainly achieved by increasing the longitudinal (length) and lateral (height) dimensions of the carbonization chamber. The width of the carbonization chamber has never exceeded 450mm, as it is generally believed in the industry that only within this width can high productivity be achieved. Currently, the maximum height of coke oven carbonization chambers is approaching 9m. Considering factors such as the cost of coke oven refractory materials and equipment manufacturing, the current height of the carbonization chamber is nearing its limit. However, through long-term production practice, it has been discovered that to ensure smooth coke oven operation, in addition to increasing the length and height of the carbonization chamber, it is also necessary to appropriately increase its width.

[0003] Ultra-wide carbonization chambers typically refer to carbonization chambers with a width greater than 500mm. Compared to conventional coke ovens with a carbonization chamber width of less than 450mm, ultra-wide carbonization chambers can significantly increase the volume and capacity of a single chamber, and bring many advantages such as energy saving and environmental protection. They are beneficial for improving the production efficiency of coke ovens and reducing energy consumption and emissions, and therefore have become the direction for the further development of modern coke ovens.

[0004] While ultra-wide carbonization chamber coke ovens offer significant advantages, they also face a series of technical challenges and potential problems in actual design, construction, and operation. These include stricter requirements for coking coal quality, increased risk of expansion pressure, more complex heating regimes, and greater difficulty in controlling temperature uniformity. In particular, the increased width of the carbonization chamber means a significant increase in the amount of coal charged per chamber. During the coking process, the expansion pressure generated by the dry distillation of coal (especially during the maximum expansion stage before the semi-coke shrinkage stage) will increase significantly. If the cohesiveness and expansion properties of the coal are not properly controlled, the enormous expansion pressure may directly lead to deformation and cracking of the furnace wall, or even bending of the coke pusher.

[0005] To address the aforementioned issues, it is necessary to break away from conventional coke oven structural design thinking and develop new coke oven combustion chamber structures to solve the problem that existing coke oven combustion chamber structures cannot withstand the enormous lateral pressure caused by ultra-wide carbonization chambers. Summary of the Invention

[0006] This invention provides a combustion chamber structure for an ultra-wide carbonization chamber coke oven. By using vertical fire channels arranged in a honeycomb pattern, the overall strength of the coke oven combustion chamber is improved, enabling it to withstand higher lateral pressure. This results in an average combustion chamber width of 600mm or even 2500mm, corresponding to an average carbonization chamber width that can be extended to 500mm or even 4000mm. While achieving an ultra-wide carbonization chamber in the coke oven, it also ensures uniform heating, which is beneficial for further increasing coke production and reducing energy consumption and emissions.

[0007] To achieve the above objectives, the present invention employs the following technical solution: A combustion chamber structure for an ultra-wide carbonization chamber coke oven, wherein the combustion chamber and the carbonization chamber are arranged alternately; the combustion chamber is a honeycomb structure composed of multiple vertical fire channels, each of which is a regular hexagon or a partial regular hexagon, and the side wall of the combustion chamber facing the carbonization chamber is a plane.

[0008] The average width of the carbonization chamber is 450–4000 mm, and the average width of the combustion chamber is 600–2500 mm.

[0009] The combustion chamber consists of two rows of parallel longitudinal double-connected vertical fire channels; each combustion chamber along the longitudinal direction of the coke oven includes two rows of vertical fire channels, and each row of vertical fire channels is composed of multiple regular hexagonal vertical fire channels along the coke oven machine side-coke side direction; two adjacent vertical fire channels along the longitudinal direction of the coke oven form a double-connected vertical fire channel; each vertical fire channel has a gas outlet and a bottom combustion air outlet at its bottom, and a combustion air channel is set in the Y-shaped partition wall at the intersection of three adjacent regular hexagonal vertical fire channels, corresponding to each regular hexagonal vertical fire channel respectively, and each combustion air channel has 1 to 5 combustion air outlets along the height direction.

[0010] The combustion chamber consists of two rows of parallel transverse double-connected vertical fire channels; each combustion chamber along the longitudinal direction of the coke oven includes two rows of vertical fire channels, and each row of vertical fire channels is composed of multiple regular hexagonal vertical fire channels along the coke oven machine side-coke side direction; two adjacent vertical fire channels along the transverse direction of the coke oven form a double-connected vertical fire channel; each vertical fire channel has a gas outlet and a bottom combustion air outlet at its bottom, and a combustion air channel is set in the Y-shaped partition wall at the intersection of three adjacent regular hexagonal vertical fire channels, corresponding to each regular hexagonal vertical fire channel respectively, and each combustion air channel has 1 to 5 combustion air outlets along the height direction.

[0011] The combustion chamber is composed of a triangular array of transverse double vertical combustion channels. Along the coke oven machine side-coke side direction, odd-numbered and even-numbered vertical combustion channels are staggered. The odd-numbered vertical combustion channels consist of two rows of regular hexagonal vertical combustion channels, while the even-numbered vertical combustion channels consist of a central regular hexagonal vertical combustion channel and half of a regular hexagonal vertical combustion channel on each side. The odd-numbered vertical combustion channels and the regular hexagonal vertical combustion channels in the middle of adjacent even-numbered vertical combustion channels form a triangular array of vertical combustion channels. The two vertical combustion channels in the same row of two adjacent odd-numbered vertical combustion channels form a double vertical combustion channel. Each odd-numbered vertical combustion channel has a gas outlet at its bottom. The regular hexagonal vertical combustion channel in the middle of the even-numbered vertical combustion channels has a combustion air outlet at its bottom, and multiple combustion air outlets are provided along the height of the partition wall between the regular hexagonal vertical combustion channel and the adjacent odd-numbered vertical combustion channel.

[0012] The combustion chamber consists of three rows of parallel transverse double-linked vertical fire channels; each combustion chamber along the longitudinal direction of the coke oven includes three rows of vertical fire channels; along the coke oven machine side-coke side direction, two adjacent vertical fire channels in the outer two rows form a double-linked vertical fire channel, and each vertical fire channel in the double-linked vertical fire channel has a gas outlet at the bottom; the bottom of the middle row of vertical fire channels has a combustion air outlet, and multiple combustion air outlets are provided along the height of the partition wall between the middle row of vertical fire channels and the adjacent vertical fire channels of the outer two rows.

[0013] The combustion chamber is composed of staggered arrays of transverse double vertical fire channels; along the coke oven machine side-coke side direction, each column of vertical fire channels consists of one regular hexagonal vertical fire channel and half a regular hexagonal vertical fire channel, and adjacent two columns of vertical fire channels are staggered; two regular hexagonal vertical fire channels in two adjacent columns of vertical fire channels form a double vertical fire channel; each vertical fire channel forming a double vertical fire channel has a gas outlet at its bottom, and each half regular hexagonal vertical fire channel has a combustion air outlet at its bottom; multiple combustion air outlets are provided along the height of the partition wall between the half regular hexagonal vertical fire channel and the adjacent regular hexagonal vertical fire channel.

[0014] The top of the double-connected vertical flue is connected through a cross-hole, and the bottom is connected through an exhaust gas recirculation hole.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1) By using vertical fire channels arranged in a honeycomb pattern to improve the overall strength of the coke oven combustion chamber, it can withstand higher lateral pressure, thereby achieving an average width of 600mm or even 2500mm for the combustion chamber, and the corresponding average width of the carbonization chamber can be expanded to 500mm or even 4000mm.

[0016] 2) By achieving an ultra-wide carbonization chamber in the coke oven, the heating uniformity of the coke oven can be guaranteed, which is conducive to further increasing coke production and reducing energy consumption and emissions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the combustion chamber structure of an ultra-wide carbonization chamber coke oven as described in this invention. Figure 1 (Two rows of parallel longitudinal double-linked fire channels).

[0018] Figure 2 This is a schematic diagram of the combustion chamber structure of an ultra-wide carbonization chamber coke oven as described in this invention. Figure 2 (Two rows of parallel horizontal double-linked fire channels).

[0019] Figure 3 This is a schematic diagram of the combustion chamber structure of an ultra-wide carbonization chamber coke oven as described in this invention. Figure 3 (Triangular array, horizontal double-linked vertical fire channel).

[0020] Figure 4 This is a schematic diagram of the combustion chamber structure of an ultra-wide carbonization chamber coke oven as described in this invention. Figure 3(Three rows of parallel horizontal double-linked vertical fire channels).

[0021] Figure 5 This is a schematic diagram of the combustion chamber structure of an ultra-wide carbonization chamber coke oven as described in this invention. Figure 3 (Interlaced array of horizontal double vertical fire channels). Detailed Implementation

[0022] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings: The present invention discloses a combustion chamber structure for an ultra-wide carbonization chamber coke oven, wherein the combustion chamber and the carbonization chamber are arranged alternately; the combustion chamber is a honeycomb structure composed of multiple vertical fire channels, each of which is a regular hexagon or a partial regular hexagon, and the side wall of the combustion chamber facing the carbonization chamber is a plane.

[0023] The average width of the carbonization chamber is 450–4000 mm, and the average width of the combustion chamber is 600–2500 mm.

[0024] like Figure 1 As shown, the combustion chamber consists of two rows of parallel longitudinal double-connected vertical combustion channels. Each combustion chamber along the longitudinal direction of the coke oven includes two rows of vertical combustion channels. Along the coke oven machine side-coke side direction, each row of vertical combustion channels consists of multiple regular hexagonal vertical combustion channels. Two adjacent vertical combustion channels along the longitudinal direction of the coke oven form a double-connected vertical combustion channel. The top of the double-connected vertical combustion channels is connected by a cross-hole, and the bottom is connected by a waste gas circulation hole. Each vertical combustion channel has a gas outlet and a bottom combustion air outlet at its bottom. A combustion air channel is set in the Y-shaped partition wall at the intersection of three adjacent regular hexagonal vertical combustion channels, and corresponds to each regular hexagonal vertical combustion channel. Each combustion air channel has 1 to 5 combustion air outlets along its height. During coke oven heating, coal gas and some combustion air are supplied to the bottom of one of the twin vertical flues. The coal gas and combustion air mix and burn at the bottom of the flue to form an upward airflow. At the same time, combustion air is supplied in stages to the vertical flue with the upward airflow through the air channel to achieve segmented combustion along the height. The exhaust gas enters the other vertical flue of the twin vertical flues through the crossover hole and forms a downward airflow. After the coke oven heating system performs a reversing operation, the upward airflow vertical flue and the downward airflow vertical flue switch synchronously and form an exhaust gas circulation through the exhaust gas circulation hole.

[0025] like Figure 2As shown, the combustion chamber consists of two rows of parallel transverse double-connected vertical combustion channels; each combustion chamber along the longitudinal direction of the coke oven includes two rows of vertical combustion channels, and each row of vertical combustion channels along the coke oven machine side-coke side direction consists of multiple regular hexagonal vertical combustion channels; two adjacent vertical combustion channels along the transverse direction of the coke oven form a double-connected vertical combustion channel, with the top of the double-connected vertical combustion channels connected by a cross-hole, and the bottom connected by a waste gas circulation hole. Each vertical combustion channel has a gas outlet and a bottom combustion air outlet at its bottom. A combustion air channel is set in the Y-shaped partition wall at the intersection of three adjacent regular hexagonal vertical combustion channels, and corresponds to each regular hexagonal vertical combustion channel. Each combustion air channel has 1 to 5 combustion air outlets along its height. During coke oven heating, coal gas and some combustion air are supplied to the bottom of one of the twin vertical flues. The coal gas and combustion air mix and burn at the bottom of the flue to form an upward airflow. At the same time, combustion air is supplied in stages to the vertical flue with the upward airflow through the air channel to achieve segmented combustion along the height. The exhaust gas enters the other vertical flue of the twin vertical flues through the crossover hole and forms a downward airflow. After the coke oven heating system performs a reversing operation, the upward airflow vertical flue and the downward airflow vertical flue switch synchronously and form an exhaust gas circulation through the exhaust gas circulation hole.

[0026] like Figure 3 As shown, the combustion chamber is composed of a triangular array of transverse double-unit vertical combustion channels. Along the coke oven machine side-coke side direction, odd-numbered and even-numbered vertical combustion channels are alternately arranged. The odd-numbered vertical combustion channels consist of two rows of regular hexagonal vertical combustion channels, while the even-numbered vertical combustion channels consist of a central regular hexagonal vertical combustion channel and half-regular hexagonal vertical combustion channels on both sides. The odd-numbered vertical combustion channels and the regular hexagonal vertical combustion channels in the middle of adjacent even-numbered vertical combustion channels form a triangular array of vertical combustion channels. Two vertical combustion channels in the same row of two adjacent odd-numbered vertical combustion channels form a double-unit vertical combustion channel. The top of the double-unit vertical combustion channels is connected by a cross-hole, and the bottom is connected by a waste gas recirculation hole. Each odd-numbered vertical combustion channel has a gas outlet at its bottom. The regular hexagonal vertical combustion channel in the middle of the even-numbered vertical combustion channels has a combustion air outlet at its bottom, and multiple combustion air outlets are provided along the height of the partition wall between this regular hexagonal vertical combustion channel and the adjacent odd-numbered vertical combustion channel. During coke oven heating, gas is introduced into the bottom of the two vertical flues in the same odd-numbered column, and mixed with the combustion air introduced from the adjacent even-numbered column of vertical flues in stages to form an upward airflow. Meanwhile, the exhaust gas enters the other vertical flue of the double vertical flue through the crossover hole and forms a downward airflow. After the coke oven heating system performs a reversal operation, the upward airflow vertical flue and the downward airflow vertical flue switch synchronously and form an exhaust gas circulation through the exhaust gas circulation hole.

[0027] like Figure 4As shown, the combustion chamber consists of three rows of parallel transverse double-connected vertical combustion channels; each combustion chamber along the longitudinal direction of the coke oven includes three rows of vertical combustion channels; along the coke oven machine side-coke side direction, two adjacent rows of vertical combustion channels in the outer two rows form a double-connected vertical combustion channel, each vertical combustion channel in the double-connected vertical combustion channel has a gas outlet at its bottom, the top of the double-connected vertical combustion channels are connected by a cross-hole, and the bottom is connected by a waste gas recirculation hole. The bottom of the middle row of vertical combustion channels is provided with a combustion air outlet, and multiple combustion air outlets are provided along the height of the partition wall between the middle row of vertical combustion channels and the adjacent vertical combustion channels of the outer two rows. During coke oven heating, gas is introduced into the bottom of one of the twin vertical flues, where it mixes and burns with the combustion air introduced into the adjacent middle row of vertical flues in stages to form an upward airflow. Meanwhile, the exhaust gas enters the other vertical flue of the twin vertical flues through the crossover hole and forms a downward airflow. After the coke oven heating system performs a reversal operation, the upward airflow vertical flue and the downward airflow vertical flue switch synchronously and form an exhaust gas circulation through the exhaust gas circulation hole.

[0028] like Figure 5 As shown, the combustion chamber is composed of staggered arrays of transverse double vertical combustion channels. Along the coke oven machine side-coke side direction, each row of combustion channels consists of one regular hexagonal combustion channel and half a regular hexagonal combustion channel, and adjacent rows of combustion channels are staggered. Two regular hexagonal combustion channels in two adjacent rows form a double combustion channel. The top of the double combustion channels are connected by a cross-hole, and the bottom is connected by a waste gas recirculation hole. Each combustion channel forming the double combustion channel has a gas outlet at its bottom, and each half regular hexagonal combustion channel has a combustion air outlet at its bottom. Multiple combustion air outlets are provided along the height of the partition wall between the half regular hexagonal combustion channel and the adjacent regular hexagonal combustion channel. During coke oven heating, gas is introduced into the bottom of one of the twin vertical flues, where it mixes and burns with the combustion air introduced into the half-hexagonal vertical flue in the same row to form an upward airflow. Meanwhile, the exhaust gas enters the other vertical flue of the twin vertical flue through the crossover hole and forms a downward airflow. After the coke oven heating system performs a reversal operation, the upward airflow vertical flue and the downward airflow vertical flue switch synchronously and form an exhaust gas circulation through the exhaust gas circulation hole.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A combustion chamber structure for an ultra-wide carbonization chamber coke oven, wherein the combustion chamber and carbonization chamber are arranged alternately; characterized in that, The combustion chamber is a honeycomb structure composed of multiple vertical fire channels, each of which is a regular hexagon or a partial regular hexagon. The side wall of the combustion chamber facing the carbonization chamber is a plane.

2. The combustion chamber structure of an ultra-wide carbonization chamber coke oven according to claim 1, characterized in that, The average width of the carbonization chamber is 450–4000 mm, and the average width of the combustion chamber is 600–2500 mm.

3. The combustion chamber structure of an ultra-wide carbonization chamber coke oven according to claim 1, characterized in that, The combustion chamber consists of two rows of parallel longitudinal double-connected vertical fire channels; each combustion chamber along the longitudinal direction of the coke oven includes two rows of vertical fire channels, and each row of vertical fire channels is composed of multiple regular hexagonal vertical fire channels along the coke oven machine side-coke side direction; two adjacent vertical fire channels along the longitudinal direction of the coke oven form a double-connected vertical fire channel; each vertical fire channel has a gas outlet and a bottom combustion air outlet at its bottom, and a combustion air channel is set in the Y-shaped partition wall at the intersection of three adjacent regular hexagonal vertical fire channels, corresponding to each regular hexagonal vertical fire channel respectively, and each combustion air channel has 1 to 5 combustion air outlets along the height direction.

4. The combustion chamber structure of an ultra-wide carbonization chamber coke oven according to claim 1, characterized in that, The combustion chamber consists of two rows of parallel transverse double-connected vertical fire channels; each combustion chamber along the longitudinal direction of the coke oven includes two rows of vertical fire channels, and each row of vertical fire channels is composed of multiple regular hexagonal vertical fire channels along the coke oven machine side-coke side direction; two adjacent vertical fire channels along the transverse direction of the coke oven form a double-connected vertical fire channel; each vertical fire channel has a gas outlet and a bottom combustion air outlet at its bottom, and a combustion air channel is set in the Y-shaped partition wall at the intersection of three adjacent regular hexagonal vertical fire channels, corresponding to each regular hexagonal vertical fire channel respectively, and each combustion air channel has 1 to 5 combustion air outlets along the height direction.

5. The combustion chamber structure of an ultra-wide carbonization chamber coke oven according to claim 1, characterized in that, The combustion chamber is composed of a triangular array of transverse double vertical combustion channels. Along the coke oven machine side-coke side direction, odd-numbered and even-numbered vertical combustion channels are staggered. The odd-numbered vertical combustion channels consist of two rows of regular hexagonal vertical combustion channels, while the even-numbered vertical combustion channels consist of a central regular hexagonal vertical combustion channel and half of a regular hexagonal vertical combustion channel on each side. The odd-numbered vertical combustion channels and the regular hexagonal vertical combustion channels in the middle of adjacent even-numbered vertical combustion channels form a triangular array of vertical combustion channels. The two vertical combustion channels in the same row of two adjacent odd-numbered vertical combustion channels form a double vertical combustion channel. Each odd-numbered vertical combustion channel has a gas outlet at its bottom. The regular hexagonal vertical combustion channel in the middle of the even-numbered vertical combustion channels has a combustion air outlet at its bottom, and multiple combustion air outlets are provided along the height of the partition wall between the regular hexagonal vertical combustion channel and the adjacent odd-numbered vertical combustion channel.

6. The combustion chamber structure of an ultra-wide carbonization chamber coke oven according to claim 1, characterized in that, The combustion chamber consists of three rows of parallel transverse double-linked vertical fire channels; each combustion chamber along the longitudinal direction of the coke oven includes three rows of vertical fire channels; along the coke oven machine side-coke side direction, two adjacent vertical fire channels in the outer two rows form a double-linked vertical fire channel, and each vertical fire channel in the double-linked vertical fire channel has a gas outlet at the bottom; the bottom of the middle row of vertical fire channels has a combustion air outlet, and multiple combustion air outlets are provided along the height of the partition wall between the middle row of vertical fire channels and the adjacent vertical fire channels of the outer two rows.

7. The combustion chamber structure of an ultra-wide carbonization chamber coke oven according to claim 1, characterized in that, The combustion chamber is composed of staggered arrays of transverse double vertical fire channels; along the coke oven machine side-coke side direction, each column of vertical fire channels consists of one regular hexagonal vertical fire channel and half a regular hexagonal vertical fire channel, and adjacent two columns of vertical fire channels are staggered; two regular hexagonal vertical fire channels in two adjacent columns of vertical fire channels form a double vertical fire channel; Each of the two vertical flues that make up the double flue is provided with a gas outlet at the bottom. Each half of the hexagonal vertical flue is provided with a combustion air outlet at the bottom. Multiple combustion air outlets are provided along the height of the partition wall between the half of the hexagonal vertical flue and the adjacent hexagonal vertical flue.

8. The combustion chamber structure of an ultra-wide carbonization chamber coke oven according to any one of claims 3 to 7, characterized in that, The top of the double-connected vertical flue is connected through a cross-hole, and the bottom is connected through an exhaust gas recirculation hole.

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