Dry quenching system and coke powder cooling device thereof

Abstract

The utility model discloses a dry quenching system and coke powder cooling device thereof. The coke powder cooling device includes a shell, an upper flower plate, a lower flower plate, a cooling tube bundle and a baffle, the shell is a cavity of hollow setting, the top end and the bottom end of shell are sealedly connected with upper flower plate and lower flower plate respectively, the hollow chamber inside shell is installed with cooling tube bundle, and the both ends of cooling tube bundle are sealedly connected with upper flower plate and lower flower plate respectively, a plurality of baffles for dredging the flow direction of cooling medium are fixed in the shell, the sidewall of shell is provided with cooling water inlet and cooling water outlet that communicate with the hollow chamber inside it, and the top end and the bottom end of shell are used for connecting with dry quenching primary dust collector and cold coke powder bin respectively. The coke powder cooling device improves the structure of traditional coke powder cooling sleeve, improves the cooling efficiency, is not easy to leak water simultaneously, and plays the role of stable production and continuous production.

Description

Technical Field

[0001] This utility model relates to the field of dry quenching technology in metallurgical coking, and in particular to a coke powder cooling device for a dry quenching system. Background Technology

[0002] The coke powder cooling device is an important piece of equipment in the dry quenching system. After the circulating gas from the dry quenching furnace comes out, it carries a large amount of coke powder at about 900°C and enters the primary dust collector for dust removal. The primary dust collector captures the high-temperature coke powder with a particle size greater than 3mm in the circulating gas and cools it to about 300°C or below by the coke powder cooling device.

[0003] In traditional dry quenching coke, the coke dust collected by the primary dust collector is cooled using a cooling jacket system. This cooling jacket consists of two layers of water jackets, with the coke dust to be cooled in the middle layer. This type of cooling jacket has a slow cooling rate and a low throughput per unit time, resulting in low cooling efficiency. Utility Model Content

[0004] The main purpose of this invention is to provide a coke powder cooling device for a dry quenching system, which aims to improve cooling efficiency.

[0005] To achieve the above objectives, this utility model provides a coke powder cooling device for a dry quenching system, comprising a shell, an upper tube plate, a lower tube plate, a cooling tube bundle, and a baffle plate, wherein... The shell is a hollow cavity. The top and bottom of the shell are respectively sealed with an upper tube plate and a lower tube plate. A cooling tube bundle is installed inside the hollow cavity of the shell. The two ends of the cooling tube bundle are respectively sealed with the upper tube plate and the lower tube plate. There are multiple baffles fixed inside the shell to guide the flow of cooling medium. The side wall of the shell is provided with a cooling water inlet and a cooling water outlet communicating with the hollow cavity inside. The top and bottom of the shell are respectively used to connect to the dry quenching primary dust collector and the cold coke powder silo.

[0006] Preferably, both the upper and lower perforated plates are provided with multiple through holes for communicating with the cooling tube bundle.

[0007] Preferably, all baffles are arranged in parallel, and multiple baffles are staggered in the height direction of the shell to form a serpentine flow channel for the internal cooling chamber of the shell.

[0008] Preferably, one end of the baffle is fixedly connected to the inner wall of the shell, and there is a gap between the other end of the baffle and the inner wall of the shell to allow cooling water to pass through. The cooling tube bundle passes through the baffle.

[0009] Preferably, the cooling water inlet is located below the lowest baffle plate, and the cooling water outlet is located above the highest baffle plate.

[0010] Preferably, the cooling tube bundle includes multiple parallel cooling tubes, all of which are evenly arranged inside the housing.

[0011] Preferably, the top end of the cooling pipe has a flared structure to allow coke powder on the upper perforated plate to automatically fall into the cooling pipe.

[0012] Preferably, flanges are fixed at both the top and bottom of the housing to connect with the dry quenching primary dust collector and the cold coke powder silo.

[0013] Preferably, a height telescopic joint is provided in the middle of the housing to adjust the height of the housing.

[0014] This utility model proposes a dry quenching coke system, including the coke powder cooling device of the above-mentioned dry quenching coke system, and also includes a dry quenching primary dust collector and a cold coke powder silo connected to its upper and lower ends respectively, with a control valve installed at the outlet of the cold coke powder silo.

[0015] The coke powder cooling device for the dry quenching system proposed in this utility model has the following beneficial effects: 1. By installing cooling tube bundles in the coke powder cooling equipment, these tube bundles are installed in the shell of the coke powder cooler and are equipped with guide plates to guide the flow of cooling water, so that the temperature of the cooling water is uniform and the pressure is stable, thereby improving the cooling efficiency and heat transfer coefficient of the coke powder. 2. Because of its high cooling efficiency, this coke powder cooling device can reduce the size of the coke powder cooling device compared to existing technologies. 3. The bottom of this coke powder cooling device is the connection between the lower tube sheet and the cooling tube bundle. Unlike the complex water jacket sealing structure of existing technologies, this coke powder cooling device is not prone to water leakage, thereby reducing maintenance workload. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of a preferred embodiment of the coke powder cooling device in the dry quenching system of this utility model. Figure 2 This is a schematic diagram of the upper tube sheet in the coke powder cooling device of the dry quenching system of this utility model.

[0017] In the diagram: 1-Shell; 2-Cold coke powder silo; 3-Upper perforated plate; 4-Lower perforated plate; 5-Baffle plate; 6-Cooling water inlet; 7-Cooling water outlet; 8-Cooling pipe; 9-Flange; 10-Height expansion joint; 11-Cold coke powder outlet.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0020] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] This invention proposes a coke powder cooling device for a dry quenching system.

[0022] Reference Figure 1 and Figure 2 In this preferred embodiment, a coke powder cooling device for a dry quenching system includes a shell 1, an upper perforated plate 3, a lower perforated plate 4, a cooling tube bundle, and a baffle plate 5, wherein... The shell 1 is a hollow cavity. The top and bottom of the shell 1 are respectively sealed and connected to the upper tube plate 3 and the lower tube plate 4. Cooling tube bundles are installed inside the hollow cavity of the shell 1. The two ends of the cooling tube bundles are respectively sealed and connected to the upper tube plate 3 and the lower tube plate 4. Multiple baffles 5 are fixed inside the shell 1 to guide the flow of cooling medium. Cooling water inlet 6 and cooling water outlet 7 are provided on the side wall of the shell 1, which communicate with the hollow cavity inside. The top and bottom of the shell 1 are respectively used to connect to the dry quenching primary dust collector and the cold coke powder silo 2.

[0023] Cooling water inlet 6 is connected to the cooling water supply system via a pipe. The shell 1 can be cylindrical or cuboid in shape, and the cold coke powder silo 2 has the same shape as the shell 1. In this embodiment, both the upper perforated plate 3 and the lower perforated plate 4 have multiple through holes for communication with the cooling tube bundle, and these through holes are sealed to the cooling tube bundle. The shell 1 is constructed of welded metal materials, and the upper perforated plate 3 and the lower perforated plate 4 can be connected to the shell 1 by welding.

[0024] In this embodiment, all baffles 5 are arranged in parallel, and multiple baffles 5 are staggered in the height direction of the shell 1 to form a serpentine flow channel in the cooling chamber inside the shell 1. This arrangement of baffles 5 maximizes the flow path of cooling water inside the shell 1, thereby maximizing the cooling effect of this coke powder cooling device.

[0025] Specifically, one end of the baffle plate 5 is fixedly connected to the inner wall of the shell 1, and there is a gap between the other end of the baffle plate 5 and the inner wall of the shell 1 to allow cooling water to pass through. The cooling tube bundle passes through the baffle plate 5.

[0026] In this embodiment, the cooling water inlet 6 is located below the lowest baffle 5, and the cooling water outlet 7 is located above the highest baffle 5. The cooling water enters from the bottom of the casing 1 and flows out from the top, opposite to the path of the coke powder, thus improving heat exchange efficiency.

[0027] In this embodiment, the cooling tube bundle includes multiple parallel cooling tubes 8, and all cooling tubes 8 are evenly arranged inside the housing 1.

[0028] Specifically, in this embodiment, the top end of the cooling pipe 8 has a flared structure to automatically allow the coke powder on the upper tube plate 3 to fall into the cooling pipe 8. The top and bottom ends of the housing 1 are both fixed with flanges 9 (flanges 9 can be welded to the outer side wall of the housing 1) to connect with the dry quenching primary dust collector and the cold coke powder silo 2.

[0029] Furthermore, a height expansion joint 10 (one or two can be provided) is provided in the middle of the housing 1 to adjust the height of the housing 1. The height expansion joint 10 can be made of an elastic material. By providing the height expansion joint 10, the stress difference caused by the uneven expansion between the housing 1 and the cooling tube bundle due to temperature difference is eliminated, thereby effectively ensuring the long-term stable operation of the equipment.

[0030] The working process of this coke powder cooling device is as follows: After the hot coke powder falls from the primary dust collector of the dry quenching coke, it enters the corresponding cooling pipe 8 through multiple through holes on the upper tube sheet 3. At the same time, cooling water enters the interior of the shell 1 through the serpentine cooling channel, exchanging heat with the hot coke powder in the cooling pipe bundle, thereby cooling the hot coke powder and reducing its temperature. The cooled coke powder enters the cold coke powder silo 2 below.

[0031] The coke powder cooling device for the dry quenching system proposed in this embodiment has the following beneficial effects: 1. By setting cooling tube bundles in the coke powder cooling equipment, these tube bundles are installed in the shell 1 of the coke powder cooler and are equipped with guide plates to guide the flow of cooling water, so that the temperature of the cooling water is uniform and the pressure is stable, thereby improving the cooling efficiency and heat transfer coefficient of the coke powder. 2. Because of its high cooling efficiency, this coke powder cooling device can reduce the size of the coke powder cooling device compared to existing technologies. 3. The bottom of this coke powder cooling device is the connection between the lower tube sheet 4 and the cooling tube bundle. Unlike the complex water jacket sealing structure of existing technologies, this coke powder cooling device is not prone to water leakage, thereby reducing maintenance workload.

[0032] This utility model also proposes a dry quenching system.

[0033] In this preferred embodiment, a dry quenching system includes a coke powder cooling device for the dry quenching system, and further includes a primary dust collector and a cold coke powder silo 2 connected to its upper and lower ends respectively. A control valve is installed at the outlet of the cold coke powder silo 2. The specific structure and beneficial effects of the coke powder cooling device for the dry quenching system are the same as those in the above embodiments, and will not be repeated here.

[0034] This dry quenching system has two operating modes: intermittent discharge of cold coke powder and continuous discharge of cold coke powder.

[0035] During the intermittent discharge of cold coke powder, the cold coke powder in the cold coke powder bin 2 is always full during the process of hot coke powder coming down from the primary dust collector of the dry quenching coke. This is to prevent the discharge of hot coke powder that has not been completely cooled. When the hot coke powder in the coke powder cooling tube bundle is full, coke powder is discharged from the cold coke powder outlet 11. The maximum discharge amount of cold coke powder each time should not exceed the total volume of the coke powder cooling tube bundle. The discharge level of cold coke powder each time should be 200mm higher than the lower tube plate 4, and the discharge of cold coke powder should be stopped.

[0036] During the continuous discharge of cold coke powder, while cooling the hot coke powder coming down from the primary dust collector of dry quenching coke, the cold coke powder in the cold coke powder silo 2 is always in a full state, ensuring that there is coke powder accumulation in the coke powder cooling tube bundle, controlling the coke powder feeding level to be no less than 200mm below the upper tube plate 3, and controlling the discharge amount of cold coke powder through the control valve on the cold coke powder outlet 11.

[0037] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A coke powder cooling device for a dry quenching system, characterized in that, Includes a casing, upper perforated plate, lower perforated plate, cooling pipe bundle, and baffles, among which, The shell is a hollow cavity. The top and bottom of the shell are respectively sealed with an upper tube plate and a lower tube plate. A cooling tube bundle is installed inside the hollow cavity of the shell. The two ends of the cooling tube bundle are respectively sealed with the upper tube plate and the lower tube plate. There are multiple baffles fixed inside the shell to guide the flow of cooling medium. The side wall of the shell is provided with a cooling water inlet and a cooling water outlet communicating with the hollow cavity inside. The top and bottom of the shell are respectively used to connect to the dry quenching primary dust collector and the cold coke powder silo.

2. The coke powder cooling device of the dry quenching system as described in claim 1, characterized in that, Both the upper and lower perforated plates are provided with multiple through holes for communicating with the cooling tube bundle.

3. The coke powder cooling device of the dry quenching system as described in claim 1, characterized in that, All baffles are arranged in parallel, and multiple baffles are staggered in the height direction of the shell to form a serpentine flow channel for the internal cooling chamber of the shell.

4. The coke powder cooling device of the dry quenching system as described in claim 3, characterized in that, One end of the baffle is fixedly connected to the inner wall of the shell, and there is a gap between the other end of the baffle and the inner wall of the shell to allow cooling water to pass through. The cooling tube bundle passes through the baffle.

5. The coke powder cooling device of the dry quenching system as described in claim 3, characterized in that, The cooling water inlet is located below the lowest baffle plate, and the cooling water outlet is located above the highest baffle plate.

6. The coke powder cooling device of the dry quenching system as described in claim 1, characterized in that, The cooling tube bundle includes multiple parallel cooling tubes, all of which are evenly arranged inside the housing.

7. The coke powder cooling device of the dry quenching system as described in claim 6, characterized in that, The top of the cooling pipe has a flared structure to allow the coke powder on the upper tube sheet to fall automatically into the cooling pipe.

8. The coke powder cooling device of the dry quenching system as described in claim 1, characterized in that, Flanges are fixed to the top and bottom of the shell to connect with the dry quenching primary dust collector and the cold coke powder silo.

9. The coke powder cooling device for a dry quenching system as described in any one of claims 1 to 8, characterized in that, A height expansion joint is provided in the middle of the housing to adjust the height of the housing.

10. A dry quenching system, characterized in that, The coke powder cooling device of the dry quenching system as described in any one of claims 1 to 9 further includes a primary dust collector and a cold coke powder bin connected to its upper and lower ends respectively, and a control valve is installed at the outlet of the cold coke powder bin.

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