Water recycling device for top water seal of dry quenching furnace

Abstract

The utility model belongs to the technical field of dry quenching furnace top water seal, and particularly relates to a water recycling device for dry quenching furnace top water seal, which comprises a water seal sediment recycling structure, a flow guide anti-sediment structure, a furnace top water seal structure and a circulating pipeline. The water seal sediment recycling structure comprises a water seal storage water tank and a water storage tank cover; the water seal storage water tank is divided into a water seal sediment tank and a water seal circulating tank through an overflow partition plate; the flow guide anti-precipitation structure comprises a supporting plate, a flow guide plate and an anti-precipitation plate which are connected in sequence; the furnace top water seal structure is composed of a furnace top water seal box bottom, an inner ring overflow wall and an outer ring box wall which are integrally arranged, a furnace top water seal groove is defined by the inner ring overflow wall and the furnace top water seal box bottom, and a diffusion water seal groove is defined by the inner ring overflow wall, the outer ring box wall and the furnace top water seal box bottom. The circulating pipeline comprises a water inlet pipeline, a water outlet pipeline and a circulating pressure pump. According to the utility model, the water supplementing amount can be greatly reduced, the waste of water resources is reduced, and the production cost of enterprises is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of dry coke quenching furnace top water seal, in particular to a dry coke quenching furnace top water seal water recycling device. Background Art

[0002] The CDQ furnace top water seal groove is located at the top of the CDQ furnace. It is a water seal device for the CDQ loading device or furnace cover. During the loading process, the lower hopper skirt of the loading device is inserted into the furnace top water seal groove to complete the loading process. After the loading is completed, the loading device is removed, and the electric push rod moves the CDQ furnace cover to the furnace top water seal groove, covers the furnace cover to prevent air from entering and burning coke. During the loading process, some coke powder particles or dust will fall into the furnace top water seal groove. Therefore, the impurity content in the water seal groove is high, and it is difficult to recycle and reuse the water in the furnace top water seal groove. At present, the CDQ circulating booster pump is used to supply each water seal, and then the water overflowing from the water seal overflows from the water seal sedimentation tank to the factory area sewer network for direct discharge. According to statistics, the CDQ circulating water consumption is about 150t per day.

[0003] Therefore, how to design a water recycling device for the top water seal of the dry quenching coke oven that can greatly reduce the amount of water replenishment, reduce the waste of water resources, and reduce the production cost of the enterprise is a technical problem that needs to be solved urgently. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a water recycling device for the top water seal of a dry coke quenching furnace, which can greatly reduce the amount of water replenishment, reduce the waste of water resources, and reduce the production cost of the enterprise.

[0005] The technical solution adopted by the utility model to solve this problem is:

[0006] A device for recycling water for top water seal of a dry coke quenching oven, comprising:

[0007] A water seal sedimentation and recycling structure, comprising a water seal water storage tank and a water storage tank cover, wherein the water seal water storage tank is divided into two parts by an overflow partition, which are used as a water seal sedimentation tank and a water seal circulation tank respectively;

[0008] A flow-guiding and anti-sedimentation structure is arranged at the bottom of the water storage tank cover and extends into the water seal sedimentation tank. The flow-guiding and anti-sedimentation structure comprises a supporting plate, a flow-guiding plate and an anti-sedimentation plate connected in sequence;

[0009] The furnace top water seal structure is composed of an integrally arranged furnace top water seal box bottom, an inner ring overflow wall and an outer ring box wall, wherein the outer ring box wall surrounds the outer periphery of the inner ring overflow wall, and the height of the inner ring overflow wall is higher than the outer ring box wall, the inner ring overflow wall and the furnace top water seal box bottom are enclosed to form a furnace top water seal groove, and the inner ring overflow wall, the outer ring box wall and the furnace top water seal box bottom are enclosed to form a release water seal groove;

[0010] A circulating pipeline, which includes a water inlet pipeline, a water outlet pipeline and a circulating pressure pump. The water inlet end of the water inlet pipeline is connected to the bottom of the top water seal box where the blow-off water seal tank is located. The water outlet end of the water inlet pipeline passes through the cover of the water storage tank and extends into the water seal sedimentation tank. The water inlet end of the water outlet pipeline passes through the cover of the water storage tank and extends into the water seal circulation tank. The water outlet end of the water outlet pipeline extends into the top water seal tank.

[0011] Preferably, the bottom of the water storage tank has a conical bottom. The bottom of the side wall of the water storage tank is respectively provided with a sewage pipe corresponding to the water seal sedimentation tank and the water seal circulation tank, and a sewage valve is provided on the sewage pipe.

[0012] Preferably, the support plate is vertically fixed to the bottom of the cover of the water storage tank. The guide plate and the anti-sedimentation plate are arranged in an "entry" shape. The free end of the guide plate is close to the side wall of the water storage tank, and the free end of the anti-sedimentation plate is close to the overflow partition plate.

[0013] Preferably, a guide flow channel is formed on the upper surface of the guide plate.

[0014] Preferably, the water outlet end of the water inlet pipeline is located above the guide plate, and a water inlet valve is provided on the water inlet pipeline.

[0015] Preferably, the upper end of the overflow partition plate is lower than the upper end of the side wall of the water storage tank. A filtering notch is also opened at the upper end of the overflow partition plate, and a filtering screen plate is arranged on the filtering notch.

[0016] Preferably, the inner ring overflow wall and the outer ring box wall are concentric rings.

[0017] Preferably, at least two pump group pipelines connected in parallel and equipped with circulating pressure pumps are also connected to the water outlet pipeline, and a water outlet valve is provided on the water outlet pipeline.

[0018] Preferably, the circulating pipeline further includes a backwashing pipeline. A backwashing pump and a backwashing valve are provided on the backwashing pipeline. The water inlet end of the backwashing pipeline is connected to the water outlet pipeline, and the water outlet end passes through the cover of the water storage tank and extends into the water storage tank and is located above the overflow partition plate.

[0019] Preferably, a backwashing water distribution pipe is connected to the water outlet end of the backwashing pipeline. The backwashing water distribution pipe is arranged at the bottom of the cover of the water storage tank and is parallel and located above the overflow partition plate. A plurality of backwashing nozzles are evenly distributed at the bottom of the backwashing water distribution pipe.

[0020] The advantages and positive effects of the present utility model are:

[0021] 1. In the present utility model, according to statistics, the daily consumption of the circulating water for dry quenching coke is about 50t, which greatly reduces the make-up water volume, reduces the waste of water resources, and lowers the production cost of the enterprise.

[0022] 2. In the present utility model, the flow guide plate and the anti-precipitation plate are arranged in an "entry" shape. The water discharged through the water outlet pipeline first falls on the flow guide plate and then flows continuously towards the bottom of the water seal sedimentation tank under the guidance. Under the action of the flow guide plate, the water flow can flow in one direction towards the side wall of the water seal storage tank and flow down along the side wall of the water seal storage tank, which can prevent the water in the water seal sedimentation tank from being impacted in a large range as much as possible. The water level in the water seal sedimentation tank rises continuously. During this process, the impurities in the water slowly precipitate. The precipitated water rises through the gap between the anti-precipitation plate and the overflow partition plate. When it rises to a certain height, it overflows from the top of the overflow partition plate into the water seal circulation tank and waits to be recycled again.

[0023] 3. In the present utility model, the water precipitated in the water seal storage tank rises through the gap between the anti-precipitation plate and the overflow partition plate. When it rises to a certain height, it flows into the water seal circulation tank through the sieve holes of the filter sieve plate. The water is secondarily filtered after precipitation, which can remove the impurities in the water as much as possible.

[0024] 4. In the present utility model, at least two pump group pipelines connected in parallel and equipped with circulating booster pumps are also connected to the water outlet pipeline. Each circulating booster pump can be alternately turned on, or can be turned on or off simultaneously, which not only helps to extend the service life of the circulating booster pump, but also can increase the pump water volume.

[0025] 5. In the present utility model, the circulating pipeline further includes an anti-flushing pipeline. By turning on the anti-flushing pump, the water in the water seal circulation tank can be pumped into the anti-flushing water distribution pipe through the water outlet pipeline and the anti-flushing pipeline, and then the overflow partition plate is flushed through the anti-flushing spray head to ensure the filtering effect of the overflow partition plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The technical solutions of the present utility model will be further described in detail below in conjunction with the drawings and embodiments. However, it should be understood that these drawings are only designed for the purpose of explanation and therefore are not intended to limit the scope of the present utility model. In addition, unless otherwise specified, these drawings are only intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0027] Figure 1 is the structural schematic diagram of Embodiment 1 Figure 1 ;

[0028] Figure 2 is Figure 1 the front view of;

[0029] Figure 3 is Figure 1 the top view of;

[0030] Figure 4 yes Figure 1 Schematic diagram of the half-section structure;

[0031] Figure 5 yes Figure 4 The main view;

[0032] Figure 6 yes Figure 1 Exploded diagram of

[0033] Figure 7 yes Figure 1 Structural diagram of the middle water outlet pipeline and the pump group pipeline;

[0034] Figure 8 This is a schematic diagram of the structure of Example 1 Figure 2 ;

[0035] Fig. 9 yes Figure 8 Schematic diagram of the half-section structure;

[0036] Fig.10 yes Figure 8 Exploded diagram of

[0037] Fig.11 Figure 8 Structural diagram of the middle water outlet pipeline and the pump group pipeline;

[0038] Fig.12 This is a schematic diagram of the structure of Example 2 Figure 1 ;

[0039] Fig.13 yes Fig.12 The main view;

[0040] Fig.14 yes Fig.12 Schematic diagram of the half-section structure;

[0041] Fig.15 yes Fig.14 The main view;

[0042] Fig.16 yes Fig.12 Exploded diagram of

[0043] Fig.17 yes Fig.12 Structural diagram of the middle water outlet pipeline and the pump group pipeline;

[0044] Fig.18 This is a schematic diagram of the structure of Example 2 Figure 2 ;

[0045] Fig.19 yes Fig.18 Schematic diagram of the half-section structure;

[0046] Fig. 20 yes Fig.18 Exploded diagram of

[0047] Fig.21 yes Fig.18 Schematic diagram of the structure of the water outlet pipeline and the pump group pipeline.

[0048] In the figure: 1 - water seal storage tank; 2 - water storage tank cover; 3 - overflow baffle; 4 - water seal sedimentation tank; 5 - water seal circulation tank; 6 - support plate; 7 - guide plate; 8 - anti-sedimentation plate; 9 - furnace top water seal box bottom; 10 - inner ring overflow wall; 11 - outer ring box wall; 12 - water inlet pipeline; 13 - water outlet pipeline; 14 - circulation booster pump; 15 - conical box bottom; 16 - sewage pipe; 17 - filter screen plate; 18 - backwash pipeline; 19 - backwash pump; 20 - backwash water distribution pipe. DETAILED DESCRIPTION

[0049] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted between these technical features (or their equivalents) to obtain more other embodiments of the present invention that may not be directly mentioned in this document. In addition, in order to simplify the drawings, the same or similar technical features may be marked in only one place in the same drawing.

[0050] In the present utility model, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection", "fixation", "screwing" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. The present utility model is described in detail below in conjunction with the accompanying drawings.

[0051] Embodiment 1:

[0052] A water recycling device for the top water seal of a dry coke quenching furnace, comprising a water seal sedimentation and recycling structure, a diversion and reverse sedimentation structure, a furnace top water seal structure and a circulation pipeline:

[0053] The water seal sedimentation and recycling structure comprises a water seal water storage tank 1 and a water storage tank cover 2. The water seal water storage tank 1 is divided into two parts by an overflow partition 3, which are used as a water seal sedimentation tank 4 and a water seal circulation tank 5 respectively;

[0054] The flow-guiding and anti-sedimentation structure is arranged at the bottom of the water storage tank cover 2 and extends into the water seal sedimentation tank 4. The flow-guiding and anti-sedimentation structure includes a supporting plate 6, a flow-guiding plate 7 and an anti-sedimentation plate 8 connected in sequence;

[0055] The furnace top water seal structure is composed of an integrally arranged furnace top water seal box bottom 9, an inner ring overflow wall 10 and an outer ring box wall 11. The outer ring box wall 11 surrounds the outer periphery of the inner ring overflow wall 10, and the height of the inner ring overflow wall 10 is higher than the outer ring box wall 11. The inner ring overflow wall 10 and the bottom of the furnace top water seal box 9 are enclosed to form a furnace top water seal groove. The inner ring overflow wall 10, the outer ring box wall 11 and the furnace top water seal bottom box 9 are enclosed to form a release water seal groove.

[0056] The circulation pipeline includes an inlet pipeline 12, an outlet pipeline 13 and a circulation booster pump 14. The water inlet end of the inlet pipeline 12 is connected to the bottom 9 of the furnace top water seal box where the venting water seal groove is located. The water outlet end of the inlet pipeline 12 passes through the cover of the water storage tank 2 and extends into the water seal sedimentation tank 4. The water inlet end of the outlet pipeline 13 passes through the cover of the water storage tank 2 and extends into the water seal circulation tank 5. The water outlet end of the outlet pipeline 13 extends into the furnace top water seal groove.

[0057] In this embodiment, the water storage tank cover 2 is installed on the water seal water storage tank 1, and the water seal water storage tank 1 is divided into a water seal sedimentation tank 4 and a water seal circulation tank 5 by an overflow partition, and the water in the furnace top water seal tank is used for the furnace top water seal. The water in the water seal circulation tank 5 can be supplied to each water seal on the furnace top through the water inlet pipe 12 by the circulating pressure pump 14, that is, the water is supplied to the furnace top water seal tank. When there is too much water in the furnace top water seal tank, it can overflow from the furnace top of the furnace top water seal tank and overflow into the discharge water seal tank, and then flow back to the water seal sedimentation tank 4 through the water outlet pipe 13. The impurities in the water discharged through the water outlet pipe are precipitated under the diversion and anti-precipitation effect of the diversion and anti-precipitation structure. The water in the water seal sedimentation tank 4 can overflow to the water seal circulation tank 5 through the overflow partition 3 after precipitation and reaching a certain height, and is recycled in this way. The following table is a cost comparison chart before and after the transformation of the utility model.

[0058] Table 1: Cost comparison chart before and after transformation

[0059]

[0060] According to statistics, the daily circulating water consumption through such dry coke quenching is about 50t, which greatly reduces the amount of water replenishment. By reducing the waste of water resources, the production cost of the enterprise can be reduced.

[0061] Furthermore, it can also be considered in this embodiment that a conical tank bottom 15 is provided at the bottom of the water storage tank 1. Sewage pipes 16 are respectively provided at the bottom of the side wall of the water storage tank 1 corresponding to the water seal sedimentation tank 4 and the water seal circulation tank 5, and sewage valves are provided on the sewage pipes 16. The precipitated impurities can continuously accumulate downward along the conical tank bottom 15, and sewage discharge can be achieved by opening the sewage valves on the sewage pipes.

[0062] Furthermore, it can also be considered in this embodiment that the support plate 6 is vertically fixed to the bottom of the water storage tank cover 2. The guide plate 7 and the anti-sedimentation plate 8 are arranged in an "entry" shape. The free end of the guide plate 7 is close to the side wall of the water storage tank 1, and the free end of the anti-sedimentation plate 8 is close to the overflow partition 3. The water discharged through the water outlet pipeline first falls on the guide plate 7 and then flows continuously towards the bottom of the water seal sedimentation tank 4 under the guidance. Under the action of the guide plate, the water flow can flow in one direction towards the side wall of the water storage tank and flow down along the side wall of the water storage tank 1, which can prevent the water in the water seal sedimentation tank 4 from being impacted on a large scale as much as possible. The water level in the water seal sedimentation tank 4 continuously rises. During this process, the impurities in the water slowly precipitate. The precipitated water rises through the gap between the anti-sedimentation plate 8 and the overflow partition, and when it rises to a certain height, it overflows from the top of the overflow partition into the water seal circulation tank 5 and waits to be recycled again.

[0063] Furthermore, it can also be considered in this embodiment that a guide flow channel is formed on the upper surface of the guide plate 7.

[0064] Furthermore, it can also be considered in this embodiment that the water outlet end of the water inlet pipeline 12 is located above the guide plate 7, and a water inlet valve is provided on the water inlet pipeline 12.

[0065] Furthermore, it can also be considered in this embodiment that the upper end of the overflow partition 3 is lower than the upper end of the side wall of the water storage tank 1. A filtering notch is also opened at the upper end of the overflow partition 3, and a filtering screen plate 17 is arranged on the filtering notch. The precipitated water rises through the gap between the anti-sedimentation plate 8 and the overflow partition, and when it rises to a certain height, it flows into the water seal circulation tank 5 through the sieve holes of the filtering screen plate 17. After secondary filtration after precipitation, impurities in the water are removed as much as possible.

[0066] Furthermore, it can also be considered in this embodiment that the inner ring overflow wall 10 and the outer ring tank wall 11 are concentric inner and outer rings. The water in the furnace top water seal tank is used for furnace top water seal, and the blow-off water seal tank can be used as an emergency blow-off water seal tank and a pre-storage chamber blow-off water seal tank, so that the excess water in the furnace top water seal tank can be discharged.

[0067] Furthermore, in the present embodiment, it can also be considered that the water outlet pipeline 13 is also connected with at least two pump group pipelines connected in parallel and equipped with a circulating pressure pump 14, and the water outlet pipeline 13 is provided with a water outlet valve. Taking the present embodiment as an example, two circulating pressure pumps are provided, and the two circulating pressure pumps can be turned on alternately or turned on or off at the same time. Generally, a single circulating pressure pump is activated, and when the water volume is large, two circulating pressure pumps are started at the same time, which not only helps to extend the service life of the circulating pressure pump, but also increases the water pumping volume.

[0068] Embodiment 2:

[0069] The circulation pipeline also includes a backwash pipeline 18, on which a backwash pump 19 and a backwash valve are provided. The water inlet end of the backwash pipeline 18 is connected to the water outlet pipeline 13, and the water outlet end passes through the water storage tank cover 2 and extends into the water seal water storage tank 1 and is located above the overflow baffle 3. In order to control the water outlet, a water outlet valve can be set on the side of the water seal circulation groove near the water outlet pipeline, and another water outlet valve (not shown in the figure) can be set on the side of the water seal groove near the furnace top. By turning on the backwash pump 19, the water in the water seal circulation groove can be pumped into the top of the overflow baffle 3 through the water outlet pipeline and the backwash pipeline to flush the overflow baffle 3, and the pollutants can be discharged through the sewage pipeline.

[0070] Furthermore, it can also be considered in the present embodiment that the water outlet end of the backwash pipe 18 is connected to a backwash water distribution pipe 20, and the backwash water distribution pipe 20 is arranged at the bottom of the water storage tank cover 2 and is located parallel to the overflow partition 3. A plurality of backwash nozzles are evenly distributed at the bottom of the backwash water distribution pipe 20. By turning on the backwash pump 19, the water in the water seal circulation tank can be pumped into the backwash water distribution pipe 20 through the water outlet pipe and the backwash pipe, and then the overflow partition 3 is flushed through the backwash nozzle, and the pollutants can be discharged through the sewage pipe.

[0071] The above embodiments describe the present invention in detail, but the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of application of the present invention shall still fall within the scope of the patent coverage of the present invention.

Claims

1. A device for recycling water for top water seal of dry coke quenching oven, characterized by: Including: A water seal precipitation reuse structure, which includes a water seal storage tank and a storage tank cover. The water seal storage tank is divided into two parts by an overflow partition, serving as a water seal precipitation tank and a water seal circulation tank respectively; A diversion anti-precipitation structure, which is arranged at the bottom of the storage tank cover and extends into the water seal precipitation tank. The diversion anti-precipitation structure includes a support plate, a diversion plate and an anti-precipitation plate connected in sequence; A furnace top water seal structure, which is composed of an integrally arranged furnace top water seal tank bottom, an inner ring overflow wall and an outer ring tank wall. The outer ring tank wall surrounds the periphery of the inner ring overflow wall, and the height of the inner ring overflow wall is higher than that of the outer ring tank wall. The inner ring overflow wall and the furnace top water seal tank bottom enclose a furnace top water seal groove, and the inner ring overflow wall, the outer ring tank wall and the furnace top water seal tank bottom enclose a blow-off water seal groove; A circulation pipeline, which includes an inlet pipeline, an outlet pipeline and a circulation booster pump. The inlet end of the inlet pipeline is connected to the furnace top water seal tank bottom where the blow-off water seal groove is located. The outlet end of the inlet pipeline passes through the storage tank cover and extends into the water seal precipitation tank. The inlet end of the outlet pipeline passes through the storage tank cover and extends into the water seal circulation tank. The outlet end of the outlet pipeline extends into the furnace top water seal groove.

2. A device for recycling water for top water seal of dry quenching coke oven according to claim 1, characterized in that: The bottom of the water seal storage tank is provided with a conical tank bottom. The side wall bottom of the water seal storage tank is respectively provided with sewage pipes corresponding to the water seal precipitation tank and the water seal circulation tank, and sewage valves are arranged on the sewage pipes.

3. The device for recycling water for top water seal of dry quenching coke oven according to claim 1, characterized in that: The support plate is vertically fixed at the bottom of the storage tank cover. The diversion plate and the anti-precipitation plate are arranged in an "in" shape. The free end of the diversion plate is close to the side wall of the water seal storage tank, and the free end of the anti-precipitation plate is close to the overflow partition.

4. The device for recycling water for top water seal of dry quenching coke oven according to claim 3, characterized in that: A diversion flow channel is formed on the upper surface of the diversion plate.

5. The device for recycling water for top water seal of dry quenching coke oven according to claim 4, characterized in that: The outlet end of the inlet pipeline is located above the diversion plate, and an inlet valve is arranged on the inlet pipeline.

6. The device for recycling water for top water seal of dry quenching coke oven according to claim 1, characterized in that: The upper end of the overflow partition is lower than the upper end of the side wall of the water seal storage tank. A filtering notch is also opened at the upper end of the overflow partition, and a filtering sieve plate is arranged on the filtering notch.

7. The device for recycling water for top water seal of dry quenching coke oven according to claim 1, characterized in that: The inner ring overflow wall and the outer ring tank wall are concentric inner and outer rings.

8. The device for recycling water for top water seal of dry quenching coke oven according to claim 1, characterized in that: At least two pump group pipelines connected in parallel and equipped with circulation booster pumps are also connected to the outlet pipeline, and an outlet valve is arranged on the outlet pipeline.

9. A device for recycling water for top water seal of a dry coke quenching oven according to any one of claims 1 to 8, characterized in that: The circulation pipeline also includes a backwashing pipeline. A backwashing pump and a backwashing valve are arranged on the backwashing pipeline. The inlet end of the backwashing pipeline is connected to the outlet pipeline, and the outlet end passes through the storage tank cover and extends into the water seal storage tank and is located above the overflow partition.

10. The device for recycling water for top water seal of dry quenching coke oven according to claim 9, characterized in that: The outlet end of the backwashing pipeline is connected with a backwashing water distribution pipe. The backwashing water distribution pipe is arranged at the bottom of the storage tank cover and is parallel and located above the overflow partition. A number of backwashing spray heads are evenly distributed at the bottom of the backwashing water distribution pipe.

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