Water vapor recovery device of vertical filter for aluminum oxide production

Abstract

The utility model discloses a water vapor recovery device of a vertical filter for aluminum oxide production, which comprises a sealing cover arranged on the upper side of a slurry tank, a wave-shaped heat exchange plate is arranged in the sealing cover, the heat exchange plate is obliquely arranged, vent holes are distributed on the wave crest of the heat exchange plate, an emptying pipe is arranged on the upper side of the sealing cover, and the vent holes are communicated with the sealing cover. A vertical flow guide plate is arranged in the emptying pipe, a water collecting tank is arranged at the lower end of the heat exchange plate, and a water conveying pipe connected to the outer side of the sealing cover is arranged on the water collecting tank; heat and moisture in steam can be recovered, discharge of the steam is reduced, and a good working environment can be created.

Description

Technical Field

[0001] The utility model relates to a water vapor recovery device for a vertical filter in aluminum oxide production, belonging to the field of waste heat recovery tools for aluminum oxide production slurry. Background Art

[0002] During alumina production, high slurry temperatures generate large amounts of steam in on-site filtration and tank equipment. Existing slurry tanks are typically open, allowing steam to be discharged directly into the atmosphere, resulting in significant energy loss. Furthermore, this large amount of steam can impact the working environment. For example, water vapor can rise to the ceiling of the plant, potentially causing corrosion on the panels and increasing humidity in the surrounding work environment.

[0003] That is, there is a need for a slurry zero-energy preheating recovery device that can recover the heat in the water vapor and the water in the steam, reduce the discharge of water vapor, and help create a good working environment. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a water vapor recovery device for an alumina production vertical filter, which can recover the heat and moisture in the water vapor, reduce the discharge of water vapor, and help create a good working environment; it can overcome the shortcomings of the existing technology.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] The utility model discloses a water vapor recovery device for a vertical filter in the production of aluminum oxide, which includes a sealing cover arranged on the upper side of a slurry tank, a wave-shaped heat exchange plate provided in the sealing cover, the heat exchange plate being arranged obliquely, exhaust holes being distributed on the wave crests of the heat exchange plate, an exhaust pipe being provided on the upper side of the sealing cover, a vertical guide plate being provided in the exhaust pipe, a water collecting trough being provided at the lower end of the heat exchange plate, and a water supply pipe connected to the outer side of the sealing cover being provided on the water collecting trough.

[0007] The water pipe is connected to the alumina water-demanding process or to a water collection tank.

[0008] A water seepage hole is provided at the trough at the lower end of the heat exchange plate, and the water seepage hole is located above the water collecting tank.

[0009] A connecting plate is provided on the aforementioned heat exchange plate and water collecting tank, screw holes are provided at corresponding positions of the connecting plate and the sealing cover, and the connecting plate is connected to the sealing cover by screws.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. In the utility model, during the rising process of water vapor, it encounters the heat exchange plate and condenses and adheres to the inner wall of the heat exchange plate. After accumulation, the condensed water is collected from the inclined inner wall to the water collection tank, and finally transported by the water pipe to the alumina water-requiring process or connected to the water collection tank. In this process, a small amount of excess steam rises through the exhaust hole and is finally discharged by the exhaust pipe. After improvement, the water vapor emission above the slurry filter tank in the current production process is drastically reduced, which is beneficial to improving the surrounding working environment. At the same time, it can also recover heat and condensed water. Moreover, a vertical guide plate is provided in the exhaust pipe, which can further recover the condensed water in the exhaust steam.

[0012] 2. A seepage hole is provided at the trough at the lower end of the heat exchange plate. The seepage hole is located above the water collecting tank. When a small amount of excess water vapor rises from the exhaust hole, it encounters the inner wall of the sealing cover and may form water droplets, which may accumulate in the trough on the upper surface of the heat exchange plate. The condensed water can be released and discharged through the seepage hole.

[0013] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings, in which:

[0015] Figure 1 It is a schematic diagram of the connection structure of the utility model.

[0016] Figure 2 It is a perspective structural diagram of the present utility model.

[0017] Figure 3 This is a schematic diagram of the split structure of the utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure of the heat exchange plate of the utility model.

[0019] Among them, there are a sealing cover 1; a heat exchange plate 2; an exhaust hole 3; an emptying pipe 4; a water collecting tank 5; a water pipe 6; a water seepage hole 7; and a vertical guide plate 8. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention and are not intended to limit the scope of protection of the present invention.

[0021] like Figure 1-Figure 4 As shown, the utility model discloses a water vapor recovery device for a vertical filter for alumina production, which includes a sealing cover 1 arranged on the upper side of a slurry tank. During installation, the sealing cover 1 is fixed to the slurry tank by welding or the like. A wave-shaped heat exchange plate 2 is provided in the sealing cover 1. The heat exchange plate 2 contains a general heat dissipation plate, and can also be provided with a circulating fluid layer. Heat exchange is performed by circulating between the fluid and the outside world. The heat exchange plate 2 is arranged obliquely, and exhaust holes 3 are distributed on the wave crests of the heat exchange plate 2. An exhaust pipe 4 is provided on the upper side of the sealing cover 1, and a vertical guide plate 8 is provided in the exhaust pipe 4. The lower end of the vertical guide plate 8 is welded and fixed to the heat exchange plate 2. A water collecting trough 5 is provided at the lower end of the heat exchange plate 2. A water pipe 6 is provided connected to the outside of the sealing cover 1. With this structure, when water vapor rises, it encounters the heat exchange plate 2 and condenses and adheres to the inner wall of the heat exchange plate 2. After accumulation, the condensed water is collected from the inclined inner wall to the water collecting tank 5, and finally transported by the water pipe 5 to the alumina water-requiring process flow or connected to the water collecting tank. In this process, a small amount of excess steam rises through the exhaust hole 3 and is finally discharged by the exhaust pipe 4. After improvement, in the current production process, the water vapor emission above the slurry filter tank is drastically reduced, which is beneficial to improving the surrounding working environment. At the same time, it can also recover heat and condensed water. Moreover, a vertical guide plate 8 is provided in the exhaust pipe 4, which can further recover the condensed water in the exhaust steam.

[0022] Furthermore, a seepage hole 7 is provided at the trough at the lower end of the heat exchange plate 2, and the seepage hole 7 is located above the water collecting tank 5. In this way, a small amount of excess water vapor rises from the exhaust hole 3 and encounters the inner wall of the sealing cover 1, which may form water droplets, and may accumulate in the trough on the upper surface of the heat exchange plate 2. The condensed water can be released and discharged through the seepage hole 7.

[0023] Furthermore, a connecting plate is provided on the heat exchange plate 2 and the water collecting tank 5, and screw holes are provided at corresponding positions of the connecting plate and the sealing cover 1. The connecting plate is connected to the sealing cover 1 by screws, so that the heat exchange plate 2 and the water collecting tank 5 can be positioned. At the same time, in order to ensure the sealing, the heat exchange plate 2, the water collecting tank 5 and the sealing cover 1 can also be welded and fixed.

[0024] The above description is only a preferred embodiment of the present invention and does not constitute any form of confidentiality restriction on the present invention. Any simple modification, equivalent change and modification of the above embodiment made based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A water vapor recovery device for a vertical filter in the production of aluminum oxide, characterized in that: It comprises a sealing cover (1) arranged on the upper side of a slurry tank, a wave-shaped heat exchange plate (2) being arranged inside the sealing cover (1), the heat exchange plate (2) being arranged at an angle, exhaust holes (3) being distributed on the wave crests of the heat exchange plate (2), a drain pipe (4) being arranged on the upper side of the sealing cover (1), a vertical guide plate (8) being arranged inside the drain pipe (4), a water collecting trough (5) being arranged at the lower end of the heat exchange plate (2), and a water delivery pipe (6) connected to the outside of the sealing cover (1) being arranged on the water collecting trough (5).

2. The water vapor recovery device for the vertical filter for aluminum oxide production according to claim 1, characterized in that: The water delivery pipe (6) is connected to the alumina water-demanding process flow or to a water collection tank.

3. The water vapor recovery device for the vertical filter for aluminum oxide production according to claim 1, characterized in that: A water seepage hole (7) is provided at the bottom trough of the heat exchange plate (2), and the water seepage hole (7) is located above the water collecting tank (5).

4. The water vapor recovery device for the vertical filter for aluminum oxide production according to any one of claims 1 to 3, characterized in that: A connecting plate is provided on the heat exchange plate (2) and the water collecting tank (5), screw holes are provided at corresponding positions of the connecting plate and the sealing cover (1), and the connecting plate is connected to the sealing cover (1) by means of screws.

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