Cooling channel of heat recovery coke oven

Abstract

The invention relates to the technical field of coke ovens, in particular to a heat recovery coke oven cooling channel which comprises cooling channels which are arranged in the length direction of the coke side of a coke oven machine and are completely through, the cooling channels are arranged at intervals, and the heat recovery coke oven cooling channel further comprises a plurality of transverse communicating channels which are perpendicular to the cooling channels and intersect with the cooling channels. The two ends of each transverse communicating channel are connected with the vertical channels of the resisting wall area respectively, and the vertical channels extend upwards to a furnace top chimney. According to the invention, the chimney effect of the vertical channel at the resisting wall can be fully utilized to attract air entering the cooling channel from the machine coke side furnace end to quickly flow, so that the cooling effect is improved.

Description

Technical Field

[0001] This invention relates to the field of coke oven technology, and more particularly to a cooling channel for a heat recovery coke oven. Background Technology

[0002] Currently, heat recovery coke ovens are mainly divided into horizontal heat recovery coke ovens and vertical heat recovery coke ovens. Horizontal heat recovery coke ovens use a combination of direct and indirect heating methods. In the carbonization chamber, the upper part of the coal is directly heated, while the lower part is indirectly heated, ultimately refining the coal into coke. Vertical heat recovery coke ovens use indirect heating. The raw coal gas burns in the vertical flue to generate heat, which is first transferred to the silica brick walls and then to the coal cake for coking.

[0003] The high-temperature exhaust gas generated after the combustion of raw coal gas inside the heat recovery coke oven is discharged through the lower flue of the furnace body. A cooling channel should be set between the lower flue and the concrete of the foundation top slab to prevent the high-temperature exhaust gas from transferring heat to the concrete and avoid high-temperature accidents.

[0004] The cooling channel is connected to the surrounding environment, and the airflow within it achieves a cooling effect. However, because the coke oven machine's coke side is over ten meters long and the cooling channel is relatively small, airflow is difficult in actual production, resulting in a limited cooling effect. Considering these characteristics of the heat recovery coke oven structure, a new heat recovery coke oven cooling channel needs to be developed to reduce the temperature of the coke oven foundation roof concrete. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, the technical problem solved by this invention is to provide a cooling channel for a heat recovery coke oven. This invention can make full use of the chimney effect of the vertical channel at the resistance wall to attract the air from the coke oven head on the machine side to flow rapidly into the cooling channel, thereby increasing the cooling effect.

[0006] To achieve the above objectives, the present invention employs the following technical solution: A heat recovery coke oven cooling channel includes a cooling channel arranged along the coke side of the coke oven and completely through it. The cooling channels are arranged at intervals. It also includes multiple transverse connecting channels that are perpendicular to and intersect with the cooling channels. The two ends of each transverse connecting channel are respectively connected to a vertical channel in the resistance wall area. The vertical channel extends upward to the top chimney of the oven.

[0007] The cooling channel can be multi-layered, with each layer separated by refractory bricks; each layer is provided with multiple transverse connecting channels that are perpendicular to and intersect with the cooling channel.

[0008] The cooling channel has a rectangular or gate-shaped cross-section.

[0009] The vertical channel is located either inside or outside the resistance wall.

[0010] An induced draft fan is installed on the chimney at the top of the furnace.

[0011] The heat recovery coke oven cooling channel is suitable for vertical or horizontal heat recovery coke ovens.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1) In this invention, the cooling channels are arranged along the longitudinal direction of the coke oven side, spaced apart. The cooling channels intersect with the transverse connecting channels, and both ends of the transverse connecting channels are connected to the vertical channels in the resistance wall area, respectively, guiding the airflow to the resistance walls at both ends, and then leading it to the chimney at the top of the furnace and out into the environment along the vertical channels. This invention can make full use of the chimney effect of the vertical channels at the resistance walls, attracting the air entering the cooling channels from the coke oven side furnace head to flow rapidly, increasing the cooling effect.

[0013] 2) In this invention, an induced draft fan is installed at the top of the furnace chimney to accelerate the airflow in the cooling channel and further increase the cooling effect.

[0014] 3) The present invention has a simple overall structure and is easy to construct. By utilizing the chimney effect, it can achieve the purpose of increasing the cooling channel and cooling effect without adding external power or using energy, which is economical and environmentally friendly. Attached Figure Description

[0015] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a front view of the coke oven of the present invention.

[0016] Figure 2 This is a side view of the coke oven of the present invention.

[0017] Explanation of reference numerals in the attached figures: In the diagram: 1-Carbonization chamber; 2-Combustion chamber; 3-Gas balance chamber; 4-Flue; 5-Cooling passage; 6-Horizontal connecting passage; 7-Vertical passage; 8-Furnace top chimney; 9-Resistant wall; 10-Refractory brick. Detailed Implementation

[0018] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings: See Figure 1 and 2As shown, the heat recovery coke oven includes a carbonization chamber 1, a combustion chamber 2, a gas balance chamber 3, a flue 4, and a heat recovery coke oven cooling channel. The heat recovery coke oven cooling channel in this invention includes a cooling channel 5 arranged along the longitudinal direction of the coke oven machine and completely continuous. The cooling channel 5 consists of two layers, with each layer of cooling channels 5 spaced apart and separated by refractory bricks 10. Each layer has four transverse connecting channels 6 perpendicular to and intersecting the cooling channels 5. The two ends of each transverse connecting channel 6 are connected to vertical channels 7 in the resisting wall area, and the vertical channels 7 extend upwards to the chimney 8 at the top of the oven.

[0019] In this embodiment, the cooling channel 5 has a rectangular cross-sectional shape. The vertical channel 7 is located inside the resisting wall 9. An induced draft fan can be installed on the furnace top chimney 8.

[0020] The cooling channel for the heat recovery coke oven in this embodiment is applied to a vertical heat recovery coke oven, but the present invention is also applicable to a horizontal heat recovery coke oven. The application principle is the same for both, so it will not be described again.

[0021] During application, the combination of the furnace top chimney 8 and the vertical channel 7 forms a chimney effect, guiding the air entering the cooling channel 5 from the coke oven head to flow rapidly, through the horizontal connecting channel 6 to the vertical channel 7, and finally discharged into the environment from the furnace top chimney 8, thereby achieving the cooling effect on the heat recovery coke oven foundation.

[0022] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention. Furthermore, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. In addition, various different embodiments of the present invention can also be arbitrarily combined, as long as they do not violate the spirit of the present invention, and should also be considered as the content disclosed by the present invention.

Claims

1. A cooling channel for a heat recovery coke oven, characterized in that, It includes a cooling channel that is arranged along the coke side of the coke oven and is completely continuous. The cooling channels are arranged at intervals. It also includes multiple transverse connecting channels that are perpendicular to and intersect with the cooling channels. The two ends of each transverse connecting channel are connected to the vertical channel in the resistance wall area. The vertical channel extends upward to the chimney at the top of the oven.

2. The heat recovery coke oven cooling channel according to claim 1, characterized in that, The cooling channel can be multi-layered, with each layer separated by refractory bricks; each layer is provided with multiple transverse connecting channels that are perpendicular to and intersect with the cooling channel.

3. The heat recovery coke oven cooling channel according to claim 1, characterized in that, The cooling channel has a rectangular or gate-shaped cross-section.

4. The heat recovery coke oven cooling channel according to claim 1, characterized in that, The vertical channel is located either inside or outside the resistance wall.

5. A heat recovery coke oven cooling channel according to claim 1, characterized in that, An induced draft fan is installed on the chimney at the top of the furnace.

6. A heat recovery coke oven cooling channel according to claim 1, characterized in that, The heat recovery coke oven cooling channel is suitable for vertical or horizontal heat recovery coke ovens.

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