Dry quenching furnace easy-to-clean water seal tank device
By incorporating a partition plate and a swirl spray pipe within the water seal tank, the problem of cleaning coke powder and coke from the tank is solved, achieving efficient cleaning of the water seal tank and safe operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIANG YUAN XIAN HONG DA MEI HUA YOU XIAN GONG SI
- Filing Date
- 2022-10-26
- Publication Date
- 2026-06-12
AI Technical Summary
The coke powder and coke in the water seal tank of the existing dry quenching furnace are difficult to clean, which leads to dry burning at the bottom of the water seal tank and water leakage at the weld joint, affecting production safety and equipment life.
A middle partition is installed in the water seal tank to divide it into upper and lower tanks. It is equipped with a swirl spray pipe and an overflow tank. The swirling action of the swirl spray pipe is used to separate coke powder and coke, which are discharged through the overflow tank. With the help of the guide plate, the coke is moved quickly to the overflow tank, realizing 24-hour continuous cleaning.
It effectively prevents coke powder and coke from caking in the water seal tank, reduces cleaning difficulty, improves cleaning efficiency, extends equipment service life, and ensures operational safety.
Smart Images
Figure 221026112621 
Figure 221026112623 
Figure 221026112627
Abstract
Description
Technical Field
[0001] This invention relates to an easy-to-clean water seal tank device for a dry quenching furnace, belonging to the technical field of dry quenching furnaces. Background Technology
[0002] Dry quenching (CDQ) is a coke quenching method that uses inert gas to cool down red-hot coke, as opposed to wet quenching.
[0003] During the dry quenching process, red coke at around 1000°C is loaded from the top of the dry quenching furnace. Low-temperature inert gas at 120°C is blown into the red coke layer of the cooling section of the dry quenching furnace by a circulating fan to absorb the sensible heat of the red coke. The cooled coke (below 200°C) is discharged from the bottom of the dry quenching furnace. The high-temperature inert gas coming out of the annular flue of the dry quenching furnace flows through the dry quenching boiler for heat exchange, and the reheat is transferred to the boiler to generate steam. The cooled inert gas is blown back into the dry quenching furnace by a circulating fan. The inert gas is circulated and reused in a closed system.
[0004] The dry quenching furnace roof is equipped with a dry quenching coke water seal trough, which mainly serves to seal and cool the furnace roof. The water seal trough is made of Q235 steel, either welded or integrally stamped. Stainless steel compressed air pipes and water pipes are arranged inside the water seal trough. Nozzles are installed along the circumference of the water pipes. When water is supplied, it causes the water in the water seal trough to rotate. Small holes are opened on the compressed air pipes, and the passage of compressed air creates bubbles within the water seal trough. In existing technology, the water seal in the water seal trough, through rotation and bubbling, discharges sediments that have fallen into the water seal trough from the coke charging port along the upper overflow outlet.
[0005] While the rotation and bubbling of the water seal water in the water seal trough can meet normal production needs, certain drawbacks remain. During the dry quenching process, drifting coke powder falls into the water seal trough and settles there. Manual cleaning is difficult and incomplete, leading to a "dry burning" phenomenon at the bottom of the trough and causing the welded joints of the water seal to crack and leak. Regular manual cleaning increases the labor intensity of workers and poses risks of mechanical injury and high temperatures. Leaks also necessitate production shutdowns, disrupting normal operations. Furthermore, it can damage the bricks in the furnace body, affecting its lifespan. Summary of the Invention
[0006] To address the technical problems existing in the prior art, the present invention provides a simple and rationally designed water seal tank device for dry quenching furnaces that effectively agitates coke powder and coke, facilitates their discharge, and prevents caking.
[0007] To achieve the above objectives, the technical solution adopted by the present invention is an easy-to-clean water seal tank device for a dry quenching furnace, comprising an annular water seal tank, wherein a middle partition is provided inside the annular water seal tank, the middle partition dividing the annular water seal tank into an upper tank and a lower tank, overflow tanks are symmetrically arranged on both sides of the annular water seal tank, the overflow tanks are connected to the upper tank and the lower tank, and an overflow port is provided on the overflow tank. A first annular water distribution pipe and a second annular water distribution pipe are respectively provided in the upper tank and the lower tank, and multiple swirling water spray pipes are installed on the first annular water distribution pipe and the second annular water distribution pipe. A first water inlet pipe is provided on the tank wall of the upper tank, and a second water inlet pipe is provided on the tank wall of the lower tank. The first water inlet pipe is connected to the first annular water distribution pipe, and the second water inlet pipe is connected to the second annular water distribution pipe.
[0008] Preferably, the swirl spray pipe is disposed inside the first annular water distribution pipe and the second annular water distribution pipe, and the included angle between the swirl spray pipe and the first annular water distribution pipe and the second annular water distribution pipe is 45°.
[0009] Preferably, the overflow port is provided with a connecting flange.
[0010] Preferably, the intermediate partition has an arc-shaped structure, and the side of the intermediate partition closer to the inner wall of the annular water seal groove is higher than the side closer to the outer wall of the annular water seal groove. The intermediate partition is also provided with multiple through holes.
[0011] Preferably, the overflow trough is further provided with a flow guide plate, which has an arc-shaped structure, with one end connected to the middle partition plate and the other end suspended above the bottom of the overflow trough.
[0012] Compared with the prior art, the present invention has the following technical effects: The present invention has a simple structure and reasonable design. It adopts a perforated central arc-shaped baffle in the water seal tank to screen coke powder and coke. At the same time, the swirling effect of the swirl spray pipe greatly provides a disturbance effect on the coke powder and coke, thereby preventing the coke powder and coke from caking in the water seal tank. Furthermore, the swirling effect washes the coke powder and coke to the overflow tank and discharges it through the overflow tank. Some of the coke powder and coke accumulated in the overflow tank can be easily removed manually, making the operation safer. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the present invention.
[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 1 .
[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 2 . Detailed Implementation
[0016] To make the technical problems, solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0017] like Figures 1 to 3 As shown, the easy-to-clean water seal tank device for dry quenching furnace includes an annular water seal tank 1. A middle partition 2 is provided inside the annular water seal tank 1, which divides the annular water seal tank into an upper tank 3 and a lower tank 4. Overflow tanks 5 are symmetrically arranged on both sides of the annular water seal tank 1. The overflow tanks 5 are connected to the upper tank 3 and the lower tank 4. An overflow port 6 is provided on the overflow tank 5, and a connecting flange 12 is provided on the overflow port 6. A first annular water distribution pipe 7 and a second annular water distribution pipe 8 are respectively provided in the upper tank 3 and the lower tank 4. Multiple swirl spray pipes 9 are installed on the first annular water distribution pipe 7 and the second annular water distribution pipe 8. A first water inlet pipe 10 is provided on the tank wall of the upper tank 3, and a second water inlet pipe 11 is provided on the tank wall of the lower tank 4. The first water inlet pipe 10 is connected to the first annular water distribution pipe 7, and the second water inlet pipe 11 is connected to the second annular water distribution pipe 8.
[0018] This invention employs a partition plate within the water seal tank, dividing it into an upper and lower tank. The partition plate also features multiple through-holes that allow coke powder to fall from the upper tank into the lower tank, where it is carried away by the water flow, preventing it from caking with the coke. The coke in the upper tank moves slowly with the water flow and eventually rolls into an overflow tank, where operators can easily scoop it out. The overflow tank is positioned safely, protecting the operators. Simultaneously, continuous water spraying through a ring-shaped water distribution pipe allows for 24-hour continuous cleaning of the dry-quenching coke water seal tank. Furthermore, the thorough removal of deposited coke powder and other debris extends the tank's lifespan.
[0019] The vortex water spray pipe 9 is located inside the first annular water distribution pipe 7 and the second annular water distribution pipe 8, and the included angle between the vortex water spray pipe 9 and the first annular water distribution pipe 7 and the second annular water distribution pipe 8 is 45°. The vortex formed by the 45° nozzles on the water pipes cleans the coke powder and coke in the water seal tank, reducing the difficulty of cleaning and saving compressed air consumption.
[0020] Furthermore, the intermediate partition 2 has an arc-shaped structure, and the side of the intermediate partition closer to the inner wall of the annular water seal trough is higher than the side closer to the outer wall of the annular water seal trough. Multiple through holes are also provided on the intermediate partition 2. This structure, combined with the swirling effect, is more conducive to the screening of coke powder and coke. A flow guide plate 13 is also provided in the overflow trough 5. The flow guide plate 13 has an arc-shaped structure, with one end connected to the intermediate partition 2 and the other end suspended above the bottom of the overflow trough 5. The flow guide plate allows coke to move quickly to the overflow trough, preventing it from accumulating in the water seal trough.
[0021] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims
1. A water seal trough device for easy cleaning in a dry quenching furnace, comprising an annular water seal trough, characterized in that: The annular water seal trough is provided with a middle partition plate, which divides the annular water seal trough into an upper trough and a lower trough. Overflow troughs are symmetrically arranged on both sides of the annular water seal trough, and the overflow troughs are connected to the upper trough and the lower trough. Overflow ports are provided on the overflow troughs. A first annular water distribution pipe and a second annular water distribution pipe are respectively provided in the upper trough and the lower trough. Multiple swirling water spray pipes are installed on the first annular water distribution pipe and the second annular water distribution pipe. A first water inlet pipe is provided on the wall of the upper trough, and a second water inlet pipe is provided on the wall of the lower trough. The first water inlet pipe is connected to the first annular water distribution pipe, and the second water inlet pipe is connected to the second annular water distribution pipe. The intermediate partition has an arc-shaped structure, and the side of the intermediate partition closer to the inner wall of the annular water seal trough is higher than the side closer to the outer wall of the annular water seal trough. The intermediate partition is used to screen coke powder and coke. The intermediate partition is also provided with multiple through holes, which are used to allow coke powder to fall from the upper trough to the lower trough.
2. The easy-to-clean water seal tank device for dry quenching furnace according to claim 1, characterized in that: The swirling water spray pipe is located inside the first annular water distribution pipe and the second annular water distribution pipe, and the included angle between the swirling water spray pipe and the first annular water distribution pipe and the second annular water distribution pipe is 45°.
3. The easy-to-clean water seal tank device for dry quenching furnace according to claim 1, characterized in that: A connecting flange is provided on the overflow port.
4. The easy-to-clean water seal tank device for dry quenching furnace according to claim 1, characterized in that: The overflow trough is also equipped with a flow guide plate, which has an arc-shaped structure, with one end connected to the middle partition and the other end suspended above the bottom of the overflow trough.