Pipeline scab cleaning structure of aluminum oxide water supply system

Abstract

The utility model discloses an aluminum oxide water supply system pipeline scab cleaning structure, which comprises a water tank, a pipeline system arranged on the water tank and used for conveying aluminum oxide to each aluminum oxide production process, an alkali liquor tank arranged on one side of the water tank, a heating device arranged on the alkali liquor tank, an alkali liquor inlet pipe and an alkali liquor discharge pipe arranged on the alkali liquor tank, and a water outlet pipe arranged on the alkali liquor discharge pipe. The alkali liquor discharge pipe is communicated with the head part of the pipeline system, a circulating pipe connected with the alkali liquor tank is arranged at the tail part of the pipeline system, and valves are arranged on the water outlet pipe of the water tank, the alkali liquor discharge pipe, the tail part of the pipeline system and the circulating pipe; according to the pipeline cleaning device, scabbing substances in the pipeline can be cleaned at low cost, and meanwhile, the service life of the pipeline can be prolonged.

Description

Technical Field

[0001] The utility model relates to a structure for cleaning scabs in pipelines of an alumina water supply system, belonging to the technical field of cleaning pipelines in alumina production. Background Art

[0002] The alumina production system relies on water supply for each production process. This water supply is delivered to each alumina production process via a pipe system that carries water from a water tank. During operation, the applicant discovered that long-term water control in the water supply system can lead to the formation of scarring on the inner walls of the pipes. This not only affects water supply efficiency but, in severe cases, can even paralyze the entire water supply system, impacting the normal operation of the entire alumina production process.

[0003] The existing technology uses cleaning agents to clean the scars in the pipeline system. Although it can play a cleaning role, each time the cleaning is done, the acidic cleaning agent will cause corrosion to the pipeline, affecting the service life of the pipeline. At the same time, the cost of using the cleaning agent is relatively high.

[0004] That is, there is a need for an alumina water supply system pipeline scar cleaning structure that can clean the scars in the pipeline at a low cost and, at the same time, is conducive to extending the service life of the pipeline. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide an alumina water supply system pipeline scar cleaning structure, which can clean the scars in the pipeline at a low cost and at the same time help to extend the service life of the pipeline; it can overcome the shortcomings of the existing technology.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] The utility model discloses a structure for cleaning clogs in the pipeline of an alumina water supply system. The structure comprises a water tank, a pipeline system for supplying water to various alumina production processes is arranged on the water tank, an alkali liquid tank is arranged on one side of the water tank, a heating device is arranged on the alkali liquid tank, an alkali liquid inlet pipe and an alkali liquid discharge pipe are arranged on the alkali liquid tank, the alkali liquid discharge pipe is connected with the head of the pipeline system, a circulation pipe connected with the alkali liquid tank is arranged at the tail of the pipeline system, and valves are arranged on the water outlet pipe of the water tank, the alkali liquid discharge pipe, the tail of the pipeline system and the circulation pipe.

[0008] The alkali solution inlet pipe is connected to the overflow pipe of the causticizing tank in the alumina production process, or is connected to the circulating mother liquor pipe of the pre-desiliconization system.

[0009] As mentioned above, water pumps are provided on the alkali solution discharge pipe and the circulation pipe.

[0010] As mentioned above, a sediment drain pipe is provided at the bottom of the alkali solution tank.

[0011] The aforementioned heating device is a steam pipe connecting the flash evaporation system to the alkali solution tank.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model is provided with an alkali liquid tank on one side of the water tank, a heating device on the alkali liquid tank, an alkali liquid inlet pipe and an alkali liquid discharge pipe on the alkali liquid tank, the alkali liquid discharge pipe is connected to the head of the pipeline system, a circulation pipe connected to the alkali liquid tank is provided at the tail end of the pipeline system, and valves are provided on the water outlet pipe of the water tank, the alkali liquid discharge pipe, the tail end of the pipeline system, and the circulation pipe. Such a structure allows the alkali liquid to be introduced into the pipeline system in the water supply system through the alkali liquid discharge pipe, and the scab in the pipeline is softened by the heated alkali liquid, which is then flushed by the water supply from the water tank. This is conducive to the shedding of scabs and slag removal. Compared with the existing technology that uses cleaning agents to clean, which easily causes pipeline damage and higher costs, this technology uses the alkali liquid of the alumina system itself to soften and clean the scabs in the pipeline system, which is conducive to cost savings. According to the applicant's cleaning experience, the scabs in the pipeline system can be effectively cleaned by delivering alkali liquid to the pipeline system every 40 days or so.

[0014] 2. The alkali solution inlet pipe is connected to the overflow pipe of the causticizing tank in the alumina production process, or is connected to the circulating mother liquor pipe of the pre-desiliconization system. In this way, the alkali solution or circulating mother liquor of the causticizing tank in the alumina production can be used to clean the pipeline system.

[0015] 3. Water pumps are installed on the alkali solution discharge pipe and the circulation pipe. This will help to increase the flushing of alkali solution into the pipeline system and improve the flushing efficiency.

[0016] 4. A sediment drain pipe is provided at the bottom of the alkali solution tank. After cleaning the scabs in the piping system, the fallen scabs are sent back to the alkali solution tank through the circulation pipe, thereby realizing the recycling of the alkali solution. The sediment drain pipe is conducive to cleaning the precipitated scabs.

[0017] 5. The heating device is a steam pipe that connects the flash evaporation system to the alkali solution tank. In this way, the high temperature and high pressure in the flash evaporation system can be used to heat the alkali solution, which is beneficial for heating the alkali solution to 95 degrees Celsius. This temperature is conducive to heating and softening the scars in the pipeline system, which is beneficial for subsequent flushing and cleaning.

[0018] 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

[0019] 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:

[0020] Figure 1 It is a schematic diagram of the connection structure of the utility model.

[0021] Among them, there are water tank 1; pipeline system 2; alkali solution tank 3; alkali solution inlet pipe 4; alkali solution discharge pipe 5; circulation pipe 6; water outlet pipe 7; and water pump 8. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1 As shown, the utility model discloses a structure for cleaning clogs in the pipeline of an alumina water supply system. Specifically, a pipeline system 2 for supplying to various alumina production processes is provided on a water tank 1, an alkali liquid tank 3 is provided on one side of the water tank 1, a heating device is provided on the alkali liquid tank 3, an alkali liquid inlet pipe 4 and an alkali liquid discharge pipe 5 are provided on the alkali liquid tank 3, and a sediment discharge pipe is provided at the bottom of the alkali liquid tank 3; the alkali liquid discharge pipe 5 is connected to the head of the pipeline system 2 through a flange and a three-part branch, a circulation pipe 6 connected to the alkali liquid tank 3 is provided at the tail end of the pipeline system 2, the circulation pipe 6 is connected to the tail end of the pipeline system 2 through a French connection, and a water pump 8 is provided on the alkali liquid discharge pipe 5 and the circulation pipe 6; the water outlet of the water tank 1 Valves are provided on the pipe 7, the alkali liquid discharge pipe 5, the tail of the pipeline system 2 and the circulation pipe 6. With such a structure, when cleaning, the water supply of the water tank 1 is closed, and the heated alkali liquid is transported through the alkali liquid inlet pipe 4, and the temperature is maintained at about 95 degrees Celsius. This temperature is easy to heat and has a good softening effect on the scab on the pipeline system 2. The circulation of the alkali liquid through the alkali liquid discharge pipe 5 is conducive to the circulation of the alkali liquid, the reuse of the alkali liquid or the discharge of the fallen scab into the alkali liquid tank 3 for precipitation and collection, which is conducive to avoiding the components of the scab from entering the alumina production system and introducing new impurities. At the same time, after softening, the scab can also be cleaned with clean water in the water tank 1.

[0024] Furthermore, the alkali solution inlet pipe 4 is connected to the overflow pipe of the causticizing tank in the alumina production process, or is connected to the circulating mother liquor pipe of the pre-desiliconization system, so that the causticizing alkali solution or circulating mother liquor in the alumina production system can be used to clean the pipeline system 2.

[0025] Furthermore, the heating device is a steam pipe connected to the alkali solution tank 3 by the flash evaporation system, so that the alkali solution can be heated by the flash evaporation system of alumina production.

[0026] 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 structure for cleaning scabs in alumina water supply system pipes, comprising a water tank (1) on which a pipe system (2) for supplying water to various alumina production processes is provided, characterized in that: An alkali solution tank (3) is provided on one side of the water tank (1), a heating device is provided on the alkali solution tank (3), an alkali solution inlet pipe (4) and an alkali solution discharge pipe (5) are provided on the alkali solution tank (3), the alkali solution discharge pipe (5) is communicated with the head of the pipeline system (2), a circulation pipe (6) connected to the alkali solution tank (3) is provided at the tail of the pipeline system (2), and valves are provided on the water outlet pipe (7) of the water tank (1), the alkali solution discharge pipe (5), the tail of the pipeline system (2) and the circulation pipe (6).

2. The alumina water supply system pipeline scar cleaning structure according to claim 1 is characterized by: The alkali liquor inlet pipe (4) is connected to the overflow pipe of the causticizing tank in the alumina production process, or is connected to the circulating mother liquor pipe of the pre-desiliconization system.

3. The alumina water supply system pipeline scar cleaning structure according to claim 1 is characterized by: Water pumps (8) are provided on both the alkali solution discharge pipe (5) and the circulation pipe (6).

4. The alumina water supply system pipeline scar cleaning structure according to claim 1 is characterized by: A sediment drain pipe is provided at the bottom of the alkali solution tank (3).

5. The alumina water supply system pipeline scar cleaning structure according to any one of claims 1 to 4, characterized in that: The heating device is a steam pipe connecting the flash evaporation system to the alkali solution tank (3).

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