Circulating water-saving quenching tank

Abstract

The utility model discloses a kind of circulating water-saving quenching tank, belong to quenching equipment technical field.The device includes tank body, three-layer spray pipe, first spray pipe configuration atomizing nozzle, second spray pipe heavy fan-shaped nozzle, third spray pipe configuration columnar nozzle, cyclone separator, settling tank and laminated filter.Through layered spray design, upper atomizing nozzle pre-cools coke, middle layer fan-shaped nozzle evenly covers coke surface, lower layer columnar nozzle high-pressure flush bottom, in combination with cyclone separation and filter recycling technology, realize waste water closed circuit circulation.Tank body top is provided with steam collection cover and condenser, and steam condensate is recycled to supplement spray system.It is suitable for coking plant wet quenching process.

Description

Technical Field

[0001] This utility model relates to the technical field of coke quenching equipment, specifically to a circulating water-saving coke quenching tank. Background Technology

[0002] In traditional wet quenching processes, when high-pressure water is directly sprayed onto high-temperature coke, a large amount of water evaporates and dissipates, and the wastewater contains coke powder and phenolic pollutants, requiring complex treatment processes, resulting in high water consumption and significant environmental pressure. Existing technologies often employ single-layer spraying systems, leading to uneven water flow distribution that causes localized over-wetting or insufficient drying of the coke, and resulting in low wastewater reuse rates. Furthermore, direct steam emissions waste water resources. Therefore, there is an urgent need for a quenching device that can precisely control the spray water volume, achieve closed-loop wastewater circulation, and recover steam.

[0003] Patent CN108659869A discloses a water seal trough for dry quenching coke, belonging to the field of dry quenching equipment. It includes an inclined surface, a bottom surface, and a side surface. One side of the inclined surface connects to the bottom surface, and one side surface connects to the bottom surface. The inclined surface, bottom surface, and side surface form a "U"-shaped water trough. A water supply pipe is installed on the bottom surface, and an expansion joint is provided at the bottom of the bottom surface. Refractory bricks are placed at the bottom of the expansion joint, and the refractory bricks are placed on top of the dry quenching coke oven. The water seal trough of this invention is installed on top of the dry quenching coke oven, mainly serving a sealing function. The water seal trough cooperates with the furnace cover and the water seal cover of the loading device to prevent a large amount of air from being drawn into the dry quenching coke oven and to prevent dust from overflowing during coke loading.

[0004] The above method directly injects water into the tank through water pipes. Uneven water distribution leads to localized over-wetting or insufficient drying of the coke, resulting in high water consumption and significant environmental pressure. Utility Model Content

[0005] The purpose of this invention is to provide a circulating water-saving coke quenching tank to solve the problems of uneven water flow distribution during the quenching process, which leads to localized over-wetting or insufficient drying of coke, resulting in high water consumption and significant environmental pressure.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: a circulating water-saving coke quenching tank, comprising a tank body, a water tank, a first spray pipe, a second spray pipe, and a third spray pipe. The first spray pipe, the second spray pipe, and the third spray pipe are fixedly installed on the inner wall of the tank body from top to bottom. The first spray pipe is equipped with an atomizing nozzle, the spray direction of which is perpendicular to the path of coke falling. The second spray pipe is equipped with a fan-shaped nozzle, the spray direction of which is directly opposite the side surface of the coke layer. The third spray pipe is equipped with a columnar nozzle, the spray direction of which is directly opposite the bottom of the coke accumulation area. A cyclone separator is provided at the bottom of the tank body. The outlet of the cyclone separator is connected to a settling tank. The settling tank is connected to a disc filter. The disc filter is connected to the water tank.

[0007] The principle and beneficial effects of this utility model are as follows: the three-layer spray pipe achieves precise layered water control through different nozzle types. The upper atomizing nozzle sprays fine water mist vertically downwards, forming a pre-cooling layer in the early stage of coke falling, reducing the surface temperature and reducing steam escape. The middle fan-shaped nozzle covers the coke surface at an inclined angle, and the spray direction crosses the coke layer surface to avoid uneven local drying and wetting. The lower columnar nozzle concentrates on rinsing the bottom of the accumulation area, using high-pressure water flow to remove residual moisture inside the coke. The layered design avoids water flow overlap and waste, and the independent control valve adjusts the water volume of each layer as needed.

[0008] Option 2, a preferred embodiment of the basic option, involves a conical water collection chamber located below the outlet of the tank. This chamber is connected to the inlet of a hydrocyclone separator via a pipe. The hydrocyclone separator generates centrifugal force through tangential water inflow, separating large particles of coke powder from the wastewater.

[0009] Option 3, a preferred option of the basic scheme, involves a sieve plate fixedly connected inside the water collection chamber. Cooling water carrying fine coke particles passes through the coke, and these solid particles are filtered out by the sieve plate.

[0010] Option 4, a preferred embodiment of the basic option, involves a steam collection hood fixedly installed on the top of the tank. A spiral coil condenser is suspended inside the collection hood, which is connected to a water tank via a pipe. The umbrella-shaped collection hood captures steam from the top of the quenching tank, and the condensate flows back to the water collection chamber by gravity through a siphon pipe, replenishing the water volume of the spray system and reducing reliance on external water sources.

[0011] Option 5, a preferred option of the basic scheme, involves a hollow cavity inside the tank, filled with an expanded perlite insulation layer to reduce heat loss. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a circulating water-saving quenching tank according to this utility model;

[0013] Figure 2 This is a top view of a circulating water-saving quenching tank according to this utility model;

[0014] Figure 3 yes Figure 2 Sectional view at point A in the middle. Detailed Implementation

[0015] The present invention will be further described in detail below through specific embodiments:

[0016] The reference numerals in the accompanying drawings include: 1-tank, 2-water tank, 3-first spray pipe, 4-second spray pipe, 5-third spray pipe, 6-atomizing nozzle, 7-fan-shaped nozzle, 8-column nozzle, 9-cyclone separator, 10-water collection chamber, 11-sieve plate, 12-sedimentation tank, 13-disc filter, 14-steam collection hood.

[0017] Example

[0018] like Figures 1 to 3 As shown: A circulating water-saving coke quenching tank includes a tank body 1, a water tank 2, a first spray pipe 3, a second spray pipe 4, and a third spray pipe 5. The first spray pipe 3, the second spray pipe 4, and the third spray pipe 5 are fixedly installed on the inner wall of the tank body 1 from top to bottom. The first spray pipe 3 is equipped with an atomizing nozzle 6, and the spray direction of the atomizing nozzle 6 is perpendicular to the coke falling path. The second spray pipe 4 is equipped with a fan-shaped nozzle 7, and the spray direction of the fan-shaped nozzle 7 is directly facing the side surface of the coke layer. The third spray pipe 5 is equipped with a columnar nozzle 8, and the spray direction of the columnar nozzle 8 is directly facing the bottom of the coke accumulation area. A cyclone separator 9 is provided at the bottom of the tank body 1. A conical water collection chamber 10 is provided below the outlet of the tank body 1. The water collection chamber 10 is connected to the tangential water inlet of the cyclone separator 9 through a pipe. A screen plate 11 is fixedly connected inside the water collection chamber 10. A settling tank 12 is connected to the outlet of the cyclone separator 9. A disc filter 13 is connected to the settling tank 12. The disc filter 13 is connected to the water tank 2. A steam collection hood 14 is fixedly installed on the top of the tank 1. A spiral coil condenser is suspended inside the collection hood 14. The steam collection hood 14 is connected to the water tank 2 through a pipe. The tank 1 adopts a double-layer steel plate welded structure, with an expanded perlite insulation layer filling the interlayer.

[0019] The implementation method of this embodiment is as follows: Coke enters the tank 1 through the feed inlet. The atomizing nozzles 6 of the first spray pipe 3 vertically spray fine water mist to pre-cool the falling coke and reduce steam escape. The fan-shaped nozzles 7 of the second spray pipe 4 in the middle layer cover the surface of the coke at an inclined angle, and the water flow penetrates the gaps between the coke to avoid uneven drying. The columnar nozzles 8 of the third spray pipe 5 in the lower layer flush the bottom of the accumulation area with high-pressure water flow. The first, second and third spray pipes ensure that the surface of the coke is fully covered. The cooling water becomes wastewater after passing through the coke. The wastewater enters the hydrocyclone separator 9 at the bottom of the tank 1. After centrifugal force separates large coke particles, it enters the settling tank 12. The suspended solids in the wastewater are settled in the settling tank 12 and then enter the disc filter 13 for further purification. Finally, it is returned to the water tank 2 for the spray system to circulate. A portion of the cooling water is evaporated by the heat of the coke. The steam collection hood captures the top steam and turns it into condensate through the spiral coil condenser. The condensate flows back to the water tank 2 through the pipeline. Tank 1 uses a double-layer steel plate sandwiched with an expanded perlite insulation layer to reduce heat loss.

[0020] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A circulating water-saving quenching tank, characterized in that, The system includes a tank (1), a water tank (2), a first spray pipe (3), a second spray pipe (4), and a third spray pipe (5). The first spray pipe (3), the second spray pipe (4), and the third spray pipe (5) are fixedly installed on the inner wall of the tank (1) from top to bottom. The first spray pipe (3) is equipped with an atomizing nozzle (6), and the spraying direction of the atomizing nozzle (6) is perpendicular to the path of the coke falling. The second spray pipe (4) is equipped with a fan-shaped nozzle (7), and the spraying direction of the fan-shaped nozzle (7) is directly opposite the side surface of the coke layer. The third spray pipe (5) is equipped with a columnar nozzle (8), and the spraying direction of the columnar nozzle (8) is directly opposite the bottom of the coke accumulation area. A cyclone separator (9) is provided at the bottom of the tank (1). The outlet of the cyclone separator (9) is connected to a settling tank (12). The settling tank (12) is connected to a disc filter (13), and the disc filter (13) is connected to the water tank (2).

2. The circulating water-saving quenching tank according to claim 1, characterized in that, A conical water collection chamber (10) is provided below the outlet of the tank (1), and the water collection chamber (10) is connected to the inlet of the cyclone separator (9) through a pipe.

3. The circulating water-saving quenching tank according to claim 2, characterized in that, A sieve plate (11) is fixedly connected inside the water collection chamber (10).

4. The circulating water-saving quenching tank according to claim 1, characterized in that, A steam collection hood (14) is fixedly installed on the top of the tank (1). A spiral coil condenser is suspended inside the steam collection hood (14). The steam collection hood (14) is connected to the water tank (2) through a pipe.

5. A circulating water-saving quenching tank according to claim 1, characterized in that, The interior of the tank (1) is a cavity, and the cavity of the tank (1) is filled with an expanded perlite insulation layer.

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