Cleaning system for scaling of cooling guide pipe of titanium dioxide chloride oxidation device

Abstract

The utility model relates to the technical field of titanium dioxide production, and discloses a cleaning system for scale formation of a cooling conduit of a chlorinated titanium dioxide oxidation device. The cleaning jacket is detachably arranged on the periphery of the cooling guide pipe and comprises a first jacket body and a second jacket body which are movably connected, annular baffles are arranged at the ends of the first jacket body and the second jacket body, a closed containing cavity is formed in the first jacket body and the second jacket body when the first jacket body and the second jacket body are connected, and a plurality of flow guide plates are arranged in the containing cavity. A first connecting port is formed in the first jacket, a second connecting port is formed in the second jacket, the first connecting port and the second connecting port are communicated with the cleaning liquid storage tank through a circulating pipeline, and a circulating pump is arranged on the pipeline. The external member can be accurately clamped at a part needing to be cleaned according to the conditions of scabbing and scaling in different areas on the cooling guide pipe, so that local key cleaning is realized, the use amount of scar removing materials is reduced, and the operation of an oxidation device and the product quality are stabilized.

Description

Technical Field

[0001] The utility model relates to the technical field of titanium dioxide production, in particular to a cleaning system for scaling of a cooling conduit of a titanium dioxide chloride oxidation device. Background Art

[0002] Titanium dioxide is a high-quality pigment with a wide range of applications, often used in inks, coatings, plastics, and papermaking. In the global high-end titanium dioxide market, over 70% of titanium dioxide products are produced using the chloride process. As the current mainstream process for titanium dioxide production, the chloride process consists of three main stages: chlorination, oxidation, and post-treatment. Oxidation is a particularly critical step. The titanium dioxide base material produced in the oxidation furnace needs to be cooled before entering the bag filter for gas-solid separation and collection of titanium dioxide. During the cooling step, the high-temperature gas-solid mixture produced after the chloride process needs to be rapidly cooled from over 1800°C to below 200°C. This is typically achieved using cooling ducts, which are typically over 100 meters long. Long-term use can lead to scaling and cleaning difficulties, resulting in reduced heat transfer efficiency in the cooling ducts. This requires increased use of descaling materials to ensure temperature control. Excessive amounts of descaling materials can easily cause temperature and pressure fluctuations in the oxidation system, resulting in product quality fluctuations.

[0003] Therefore, the prior art requires a system for cleaning scaling of the cooling conduit of a titanium dioxide chloride oxidation device. Utility Model Content

[0004] In view of this, the purpose of the embodiment of the present utility model is to propose a cleaning system for scaling of the cooling duct of a titanium dioxide chloride oxidation device, which can quickly remove scaling of the cooling duct, thereby reducing the amount of scar removal materials used and stabilizing the operation of the oxidation device and product quality.

[0005] Based on the above purpose, the embodiment of the present invention provides a cleaning system for scaling of a cooling conduit of a titanium dioxide chloride oxidation device, comprising:

[0006] a cleaning fluid storage tank; and

[0007] The cleaning jacket is detachably arranged on the periphery of the cooling duct, and includes a first jacket and a second jacket that are movably connected. An annular baffle is provided at the ends of the first jacket and the second jacket, and the inner ring diameter of the annular baffle is the same as the diameter of the cooling duct. When the first jacket and the second jacket are connected, a closed accommodating cavity is formed inside, and a plurality of guide plates are provided in the accommodating cavity. A first connecting port is provided on the first jacket, and a second connecting port is provided on the second jacket. The first connecting port and the second connecting port are connected to the cleaning liquid storage tank through a circulation pipeline, and a circulation pump is provided on the pipeline.

[0008] In some embodiments, the system further comprises:

[0009] The recoverer is arranged below the end of the cleaning jacket to collect leaked liquid, and the recoverer is connected to the cleaning liquid storage tank through a recovery pipeline.

[0010] In some embodiments, a plurality of liquid inlets are provided on the top of the cleaning liquid storage tank, and a stirring shaft is provided in the cleaning liquid storage tank. The stirring shaft is driven by a motor for stirring, and the stirring shaft has a plurality of staggered stirring blades.

[0011] In some embodiments, a liquid level meter is further provided in the cleaning liquid storage tank.

[0012] In some embodiments, the plurality of liquid inlets include an acid liquid inlet and a process water inlet.

[0013] In some embodiments, the guide plate is a spiral surface, and a plurality of guide plates are evenly spaced apart in the first jacket and the second jacket to form a spiral ribbon distribution in the length direction of the cleaning jacket.

[0014] In some embodiments, the circulation pipeline is further connected to a waste liquid tank.

[0015] In some embodiments, a transparent observation window is provided on the first jacket and / or the second jacket.

[0016] In some embodiments, a plurality of flow regulating valves are provided on the circulation pipeline.

[0017] In some embodiments, the first jacket and the second jacket are secured by bolt fasteners.

[0018] The utility model has at least the following beneficial technical effects:

[0019] The cleaning system provided by the present invention has a conveniently detachable cleaning kit. The kit can be precisely clamped on the part that needs to be cleaned according to the scarring and scaling conditions in different areas of the cooling duct, thereby achieving localized focused cleaning and avoiding the waste of resources caused by comprehensive cleaning, thereby helping to reduce the use of scar removal materials. In addition, the device can respond quickly and clean the part in a timely manner by removing and installing the kit, reducing the impact on the production process. In addition, the kit is designed with adjustable angle guide plates. These guide plates can effectively guide the cleaning liquid to form turbulence or eddy currents on the surface of the cooling duct, increase the contact area and contact time between the cleaning liquid and the inner wall of the duct, and ensure that dirt, sediment, etc. are completely removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of an embodiment of a cooling duct cleaning system provided by the present invention;

[0022] Figure 2 This is a schematic diagram of an embodiment of a cooling duct cleaning jacket provided by the present invention, which includes a front view, a top view, and a side view from top to bottom.

[0023] Description of reference numerals:

[0024] 100, cleaning jacket; 200, cleaning liquid storage tank; 300, acid tank; 400, water tank; 500, waste liquid tank; 600, circulation pump; 700, cooling pipe; 800, recovery device;

[0025] 110, first jacket; 111, first connection port (liquid outlet); 112, fastener; 113, baffle; 114, first hose; 120, second jacket; 121, second connection port (liquid inlet); 122, second hose; 130, guide plate;

[0026] 210. Stirring shaft; 220. Liquid level gauge. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention pertains; the terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this invention; for example, the directions or positions indicated by the terms "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are for ease of description only and should not be construed as limiting this technical solution.

[0029] The terms "including," "having," and any variations thereof in the specification and claims of this utility model and the accompanying drawings are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the specification and claims of this utility model and the accompanying drawings are used to distinguish between different items, not to describe a particular order. "Multiple" means two or more, unless otherwise expressly specified.

[0030] In the specification and claims of this utility model and the above-mentioned description of the drawings, when an element is referred to as being “fixed to”, “mounted on”, “disposed on” or “connected to” another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being “connected to” another element, it may be directly or indirectly connected to the other element.

[0031] Furthermore, references to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] In the process of producing titanium dioxide by the chloride method, the high-temperature titanium dioxide particles after the oxidation process need to be cooled down through the cooling duct. In the process of titanium dioxide production, the scarring and scaling on the cooling duct mainly occur on the outer surface of the duct. This is because the cooling duct is usually used to cool down the high-temperature material, and when the material flows inside the duct, its temperature gradually decreases. However, the outer surface of the duct is in contact with the external environment (such as air or cooling medium), and the temperature gradient is large, which can easily cause certain components in the material to precipitate and deposit on the outer surface of the duct, forming scarring or scaling. Therefore, a cleaning system for scaling of the cooling duct of the chloride titanium dioxide oxidation device is needed, such as Figures 1 and 2 Shown, including:

[0033] a cleaning fluid storage tank 200; and

[0034] The cleaning jacket 100 is detachably arranged on the periphery of the cooling guide tube 700, and includes a first jacket 110 and a second jacket 120 that are movably connected. An annular baffle 113 is provided at the ends of the first jacket 110 and the second jacket 120. The inner ring diameter of the annular baffle 113 is the same as the diameter of the cooling guide tube 700. When the first jacket 110 and the second jacket 120 are connected, a closed accommodating cavity is formed inside, and a plurality of guide plates 130 are provided in the accommodating cavity. A first connecting port 111 is provided on the first jacket 110, and a second connecting port 121 is provided on the second jacket 120. The first connecting port 111 and the second connecting port 121 are connected to the cleaning liquid storage tank 200 through a circulation pipeline, and a circulation pump 600 is provided on the pipeline.

[0035] Furthermore, the system also includes:

[0036] The recovery device 800 is provided below the end of the cleaning jacket 100 to collect the leaked liquid. The recovery device 800 is connected to the cleaning liquid storage tank 200 via a recovery pipeline. Figure 1 As shown, a recoverer 800 is provided below the baffle 113 at both ends of the cleaning jacket 100. The recoverer can be set to a funnel shape to collect the leaked liquid flowing out of the baffle. The two recoverers are further connected to the recovery pipeline and return it to the cleaning liquid storage tank 200 to recycle and reduce the waste of cleaning liquid.

[0037] Furthermore, the top of the cleaning liquid storage tank 200 is provided with multiple liquid inlets, and a stirring shaft 210 is provided in the cleaning liquid storage tank 200. The stirring shaft 210 is driven by a motor to stir the liquid, and the stirring shaft 210 has multiple staggered stirring blades. In some embodiments, a liquid level meter is also provided in the cleaning liquid storage tank 200. Preferably, an ultrasonic liquid level meter is used. The ultrasonic liquid level meter uses a non-contact measurement method to measure the liquid level by transmitting and receiving ultrasonic waves, avoiding direct contact with the measured liquid. This avoids contamination of the cleaning liquid and corrosion of the measuring equipment by the cleaning acid, thereby improving the reliability and accuracy of the measurement.

[0038] Furthermore, the cleaning liquid storage tank 200 has multiple liquid inlets including an acid inlet and a process water inlet. The acid inlet is connected to the acid tank 300, and the process water inlet is connected to the water tank 400. The acid is 25% hydrochloric acid from the chlorination process, which is mixed with the process water in the cleaning liquid storage tank and stirred by a stirring shaft to form the cleaning liquid.

[0039] Furthermore, if Figure 2As shown in the front view and top view of the cleaning jacket, the guide plate 130 has a spiral surface. Multiple guide plates 130 are evenly spaced within the first jacket 110 and the second jacket 120 to form a spiral ribbon distribution along the length of the cleaning jacket. The spirally curved guide plates can guide the fluid to move in a spiral manner. These guide plates can effectively guide the cleaning liquid to form turbulence or eddies on the surface of the cooling duct, increasing the contact area and contact time between the cleaning liquid and the inner wall of the duct, ensuring that dirt, sediment, etc. are thoroughly removed. In addition, this flow path can increase the flow length of the fluid, thereby making the fluid more evenly distributed within the accommodating chamber. This helps to reduce flow dead zones and improve the overall efficiency of the cleaning kit.

[0040] Furthermore, the circulation pipeline is further connected to a waste liquid tank 500, and when the cleaning liquid contains too many impurities, the waste liquid tank is opened to collect the waste liquid.

[0041] Furthermore, a transparent observation window is provided on the first jacket and / or the second jacket. In order to facilitate monitoring of the cleaning process, a transparent observation window or a visual interface can be provided on the clamping member so that the operator can intuitively understand the cleaning effect and adjust the cleaning strategy in time.

[0042] Furthermore, a plurality of flow regulating valves are provided on the circulation pipeline.

[0043] Furthermore, the first jacket 110 and the second jacket 120 are fixed by bolt fasteners 112. In other embodiments, they can also be fixed in a detachable manner such as magnetic fixation.

[0044] The present invention will be further explained below with reference to specific embodiments.

[0045] The cleaning system includes a cleaning liquid storage tank 200 and a cleaning jacket 100. The cleaning liquid storage tank 200 includes an acid liquid inlet and a process water inlet. The two liquids are stirred by a stirring shaft 210 to obtain a cleaning acid liquid. The amount of liquid in the tank is monitored by a liquid level meter. When the liquid amount exceeds a certain value, the flow rate of the acid liquid and process water is adjusted by a valve.

[0046] The cleaning jacket 100 is detachably arranged on the periphery of the cooling guide 700 and includes a first jacket 110 and a second jacket 120 that are movably connected. Figure 2As shown, the first jacket 110 is arranged above the conduit 700, and the second jacket 120 is arranged below the conduit 700. The second connecting port 121 at the bottom is the liquid inlet, and the first connecting port 111 at the top is the liquid outlet. The first hose 114 is connected to the first connecting port 111 and then further connected to the first pipeline to the cleaning liquid storage tank 200. The second hose 122 is connected to the second connecting port 121 and then further connected to the second pipeline to the cleaning liquid storage tank 200. A circulating pump 600 is provided on the second pipeline to draw acid from the cleaning liquid storage tank to the cleaning jacket 100 to clean the cooling conduit 700. An annular baffle 113 is provided at the end of the first jacket 110 and the second jacket 120. When the first jacket 110 and the second jacket 120 are connected, a closed accommodating chamber is formed inside. A plurality of guide plates 130 are provided in the accommodating chamber. A first connecting port 111 is provided on the first jacket 110, and a second connecting port 121 is provided on the second jacket 120. The first connecting port 111 and the second connecting port 121 are connected to the cleaning liquid storage tank 200 through a circulation pipeline.

[0047] The method of using this device is as follows: fix the cleaning jacket on the periphery of the cooling duct according to the position to be cleaned, open the acid inlet and the process water inlet, turn on the stirring shaft, mix and stir in the cleaning liquid storage tank, turn on the circulation pump, and allow the cleaning acid to enter the cleaning jacket through the pipeline and circulate, thereby cleaning the cooling duct. The cleaning system provided by the utility model has a cleaning kit that can be easily disassembled. The kit can be accurately clamped on the part that needs to be cleaned according to the scarring and scaling conditions of different areas on the cooling duct, so as to achieve local focused cleaning, avoid the waste of resources caused by comprehensive cleaning, and thus help reduce the use of scar removal materials. In addition, the device can respond quickly and clean the part in time by disassembling and installing the kit, reducing the impact on the production process. In addition, the kit is designed with adjustable angle guide plates. These guide plates can effectively guide the cleaning liquid to form turbulence or eddy currents on the surface of the cooling duct, increase the contact area and contact time between the cleaning liquid and the inner wall of the duct, and ensure that dirt, sediment, etc. are completely removed.

[0048] The above are exemplary embodiments disclosed by the present invention, but it should be noted that various changes and modifications can be made without departing from the scope of the disclosure of the embodiments of the present invention as defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present invention can be described or required in individual form, they can also be understood as multiple unless expressly limited to the singular.

[0049] It should be understood that, as used herein, the singular forms "a" and "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" is intended to include any and all possible combinations of one or more of the associated listed items.

[0050] The serial numbers of the embodiments disclosed in the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0051] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to limit the scope of the disclosure of the present invention (including the claims) to these examples. Based on the principles of the present invention, the technical features of the above embodiments or different embodiments may be combined, and there are many other variations of the various aspects of the above embodiments, which are not provided in detail for the sake of clarity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cleaning system for cleaning scale in cooling pipes of a titanium dioxide chloride oxidation device, characterized in that: include: cleaning fluid storage tank; as well as A cleaning jacket is detachably arranged on the periphery of the cooling duct, and includes a first jacket and a second jacket that are movably connected. An annular baffle is provided at the ends of the first jacket and the second jacket, and the inner ring diameter of the annular baffle is the same as the diameter of the cooling duct. When the first jacket and the second jacket are connected, a closed accommodating cavity is formed inside, and a plurality of guide plates are provided in the accommodating cavity. A first connecting port is provided on the first jacket, and a second connecting port is provided on the second jacket. The first connecting port and the second connecting port are connected to the cleaning liquid storage tank through a circulation pipeline, and a circulation pump is provided on the pipeline.

2. The cleaning system for scaling of cooling conduits of a titanium dioxide chloride oxidation device according to claim 1, characterized in that: Also includes: A recoverer is provided below the end of the cleaning jacket to collect leaked liquid, and the recoverer is connected to the cleaning liquid storage tank through a recovery pipeline.

3. The cleaning system for scaling of cooling conduits of a titanium dioxide chloride oxidation device according to claim 2, characterized in that: The top of the cleaning liquid storage tank is provided with a plurality of liquid inlets, and a stirring shaft is provided in the cleaning liquid storage tank. The stirring shaft is driven by a motor to stir the liquid, and the stirring shaft has a plurality of stirring blades distributed in an interlaced manner.

4. The cleaning system for scaling of cooling conduits of a titanium dioxide chloride oxidation device according to claim 3, characterized in that: A liquid level gauge is also provided in the cleaning liquid storage tank.

5. The cleaning system for scaling of cooling pipe of titanium dioxide chloride oxidation device according to claim 3, characterized in that: The multiple liquid inlets include an acid liquid inlet and a process water inlet.

6. The cleaning system for scaling of cooling conduits of a titanium dioxide chloride oxidation device according to claim 2, characterized in that: The guide plates are spiral surfaces, and the guide plates are evenly spaced within the first jacket and the second jacket to form a spiral ribbon distribution in the length direction of the cleaning jacket.

7. The cleaning system for scaling of cooling conduits of a titanium dioxide chloride oxidation device according to claim 2, characterized in that: The circulation pipeline is further connected with a waste liquid tank.

8. The cleaning system for scaling of cooling pipes of a titanium dioxide chloride oxidation device according to claim 2, characterized in that: The first jacket and / or the second jacket is provided with a transparent observation window.

9. The cleaning system for scaling of cooling pipes of a titanium dioxide chloride oxidation device according to claim 2, characterized in that: A plurality of flow regulating valves are arranged on the circulation pipeline.

10. The cleaning system for scaling of cooling pipes of a titanium dioxide chloride oxidation device according to claim 2, characterized in that: The first jacket and the second jacket are fixed by bolt fasteners.

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