System and method for preventing lime plug

Abstract

The application provides a system and method for preventing quicklime from blocking, which comprises a bin body and a pipeline, a plurality of lining plates are arranged in the bin body, the lining plate is internally hollow, the inner side and the periphery of the lining plate are working surfaces, a plurality of holes are arranged on the working surfaces, the plurality of holes are communicated with the hollow structure, and the diameter of the holes is smaller than the granularity of quicklime; the hollow structure is communicated with the pipeline, and the pipeline conveys gas to the inside of the bin body through the hollow structure and the holes. Compared with the prior art, the quicklime bin and the system can effectively avoid the blocking of quicklime in the bin body.

Description

Technical Field

[0001] This invention relates to the field of metallurgical sintering technology, and in particular to a system and method for preventing quicklime blockage. Background Technology

[0002] The particle size of quicklime used for sintering is very fine. The conventional particle size requirement is <3mm for more than 90%, and the minimum particle size is generally 1mm. The silos for storing quicklime in the metallurgical industry are generally conical structures made of steel. The outer shell of the quicklime silo is made of ordinary steel plate with a thickness of 8-10mm, and the inside is lined with ordinary wear-resistant plates (manganese plates, plasma plates, nylon plates, polymer plates, ceramic plates, etc.). Regardless of the type of lining plate, gaps are reserved when splicing and installing them in the silo to allow for expansion during use. The spacing between gaps is generally 3-5mm, and the depth of the gaps is generally 20-30mm. Different lining plate materials have different expansion coefficients, and the spacing and depth are usually reserved according to the expansion coefficient.

[0003] Currently, during the use of quicklime silos, it is impossible to completely prevent the phenomenon of quicklime sticking to the internal surface, which causes material blockage. There are two main reasons for the material blockage: First, quicklime is prone to absorbing moisture, and after absorbing moisture, some of it will form calcium hydroxide. Calcium hydroxide has strong adhesive properties and can easily form adhesive on the inner surface of the lining plate. Second, the gaps left when the lining plates are spliced ​​in the silo can easily cause quicklime to get stuck in the gaps and form a blockage. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a system and method for preventing quicklime blockage, so as to solve the problem of quicklime easily clogging in the silo in the prior art.

[0005] In one respect, to achieve the above and other related objectives, the present invention provides an anti-clogging quicklime silo comprising: The silo body has multiple lining plates arranged inside. The lining plates have a hollow structure inside. The inner side and all four sides of the lining plates are working surfaces. Multiple holes are arranged on the working surfaces. All the holes are connected to the hollow structure. The diameter of the holes is smaller than the particle size of quicklime. A pipe, the hollow structure being connected to the pipe, the pipe supplying gas to the interior of the chamber through the hollow structure and the holes.

[0006] Optionally, the working surface is a canvas structure with holes provided on it, and a steel mesh supporting the working surface is provided on the working surface.

[0007] Optionally, a gap is provided between adjacent lining plates, and the gap is spaced 5-10 mm apart.

[0008] Optionally, the diameter of the hole is less than 1 mm.

[0009] Optionally, a pressure regulating valve is installed on the pipeline, and the pressure of the gas is 0.3-0.7 MPa.

[0010] Optionally, the pipeline is provided with a U-shaped pipe section, and a heating element is provided at the U-shaped pipe section. The heating element is used to heat the gas in the pipeline to 50℃-100℃.

[0011] Optionally, the outside of the pipe is wrapped with thermal insulation material, which keeps the temperature of the gas at 50°C-80°C.

[0012] Optionally, the gas is nitrogen.

[0013] Optionally, a nitrogen source is connected to the end of the pipe, which can supply nitrogen to the pipe.

[0014] On the other hand, correspondingly, the present invention provides a method for preventing quicklime blockage, which employs any of the above-described systems for preventing quicklime blockage, by introducing nitrogen gas at 0.3-0.7 MPa into the pipe, and blowing out quicklime accumulated inside and around the liner through the hollow structure and the holes.

[0015] In the aforementioned system and method for preventing quicklime blockage, the improved lining structure within the silo creates a hollow interior, with the inner and outer sides serving as working surfaces. Gas is introduced through pipes and blown out through the holes in the hollow structure, preventing quicklime from adhering to the inner surface of the lining and dislodging any quicklime stuck in the gaps, thus preventing blockage within the silo. By controlling the gas pressure to maintain a slight pressure, just greater than the pressure required for quicklime to enter the holes, the quicklime can be continuously blown out. Heating and drying the gas prevents the quicklime from absorbing moisture, thus preventing the formation of calcium hydroxide and subsequent adhesion. Compared to existing technologies, this quicklime silo and system effectively prevent quicklime from sticking inside the silo. Attached Figure Description

[0016] Figure 1 The diagram shown is a structural schematic of the silo, illustrating an exemplary embodiment. Figure 2 The diagram shown is a structural schematic of a system for preventing quicklime blockage, as illustrated in an exemplary embodiment.

[0017] The reference numerals in the embodiments include: 10. Chamber body, 11. Liner, 12. Hole, 13. Bolt, 14. Pipe, 20. Pressure stabilizing valve, 21. U-shaped pipe section, 22. Heating component, 30. Nitrogen source, 31. Detailed Implementation

[0018] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0019] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0022] Figure 1 This is a schematic diagram of the structure of a silo 10 in an exemplary embodiment of this application, illustrating a system for preventing quicklime blockage. The silo 10 can be applied to... Figure 2 In the system for preventing quicklime blockage shown, it should be understood that the method for preventing quicklime blockage in this solution is based on the application of a system for preventing quicklime blockage, and this embodiment does not limit other implementation environments and equipment to which the method is applicable.

[0023] like Figure 1 and Figure 2 As shown, in an exemplary embodiment, a system for preventing quicklime blockage includes: The silo body 10 has multiple lining plates 11 arranged inside. The lining plates 11 have a hollow structure 12 inside. The inner side and all four sides of the lining plates 11 are working surfaces. Multiple holes 13 are arranged on the working surfaces. The multiple holes 13 are all connected to the hollow structure 12. The diameter of the holes 13 is smaller than the particle size of quicklime. Pipeline 20, the hollow structure 12 is connected to the pipeline 20, and the pipeline 20 delivers gas to the interior of the chamber 10 through the hollow structure 12 and the hole 13.

[0024] The pipeline 20 includes a main pipeline 20 and branch pipelines 20. The main pipeline 20 is connected to a gas source for transporting gas from the gas source. The branch pipelines 20 surround the silo body 10 and are used to connect to the hollow structure 12 of each liner plate 11. In this embodiment, to avoid the gas reacting with quicklime, the gas is nitrogen. A nitrogen source 31 is connected to the end of the main pipeline 20 to supply nitrogen to the pipeline 20.

[0025] In the specific implementation process, nitrogen is introduced into the main pipeline 20 through nitrogen source 31. The nitrogen enters the hollow structure 12 of the liner 11 through the branch pipeline 20 and is blown out through the holes 13, acting on the quicklime adhering to the inside and around the liner 11 to prevent the quicklime from adhering and clogging the inner wall of the silo 10. During this process, heating and drying the nitrogen can prevent the quicklime from absorbing moisture, and providing a certain pressure ensures that the nitrogen blows the quicklime out through the holes 13 without affecting the storage and transfer of the quicklime within the silo 10.

[0026] In some embodiments, based on the conventional particle size requirement of <3mm in over 90% of the material, and the minimum particle size generally being 1mm, the diameter of the hole 13 is less than 1mm. A gap is provided between adjacent liner plates 11, with a gap spacing of 5-10mm. This gap spacing is larger than the typical gap spacing, facilitating the installation of the liner plates 11 and allowing the quicklime in the gaps to be blown out. The depth of the gaps uses existing, conventional settings without modification.

[0027] In some embodiments, the working surface is a canvas structure with holes 13 provided on it, and a steel mesh supporting the working surface is provided on the working surface. In specific implementation, the holes 13 need to cover the entire working surface. The use of a canvas structure and a steel mesh allows for better and faster installation of the holes 13.

[0028] In some embodiments, a pressure regulating valve 21 is installed on the pipeline 20, and the pressure of the gas is 0.3-0.7 MPa. For example, Figure 2As shown, a pressure regulating valve 21 is installed on the main pipeline 20 to ensure that the nitrogen gas blown out of the hole 13 forms a slight pressure, which can counteract the gravity of the quicklime and blow the quicklime out of the hole 13.

[0029] In some embodiments, the pipe 20 is provided with a U-shaped pipe section 22, and a heating element 30 is provided at the U-shaped pipe section 22. The heating element 30 is used to heat the gas in the pipe 20 to 50°C-100°C. For example, Figure 2 As shown, heating the U-shaped pipe section 22 by the heating component 30 can heat the gas in the pipe 20 to the required temperature.

[0030] In some embodiments, the pipe 20 is wrapped with insulation material, which keeps the gas temperature between 50°C and 80°C. After the pipe 20 is heated by the heating element 30, the pipe 20 still needs to transport the gas over a long distance. Therefore, wrapping the pipe 20 with insulation material can effectively prevent heat loss of the gas during transportation.

[0031] Another aspect of this application provides a method for preventing quicklime blockage, which is based on a quicklime blockage prevention system. Specifically, it employs any of the aforementioned quicklime blockage prevention systems, introducing nitrogen gas at 0.3-0.7 MPa into the pipe 20. The nitrogen gas passes through the hollow structure 12 and the holes 13 to blow out the quicklime accumulated inside and around the liner 11.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A system for preventing quicklime blockage, characterized in that, include: The silo body has multiple lining plates arranged inside. The lining plates have a hollow structure inside. The inner side and all four sides of the lining plates are working surfaces. Multiple holes are arranged on the working surfaces. All the holes are connected to the hollow structure. The diameter of the holes is smaller than the particle size of quicklime. The hollow structure is connected to the pipeline, and the pipeline delivers gas, namely nitrogen, to the interior of the chamber through the hollow structure and the holes.

2. The system for preventing quicklime blockage according to claim 1, characterized in that: The working surface is a canvas structure with holes provided on it, and a steel mesh is provided on the working surface to support it.

3. The system for preventing quicklime blockage according to claim 2, characterized in that: A gap is provided between adjacent lining plates, and the gap is 5-10mm apart.

4. A system for preventing quicklime blockage according to claim 3, characterized in that: The diameter of the hole is less than 1 mm.

5. A system for preventing quicklime blockage according to claim 4, characterized in that: A pressure regulating valve is installed on the pipeline, and the pressure of the gas is 0.3-0.7 MPa.

6. A system for preventing quicklime blockage according to claim 4, characterized in that: The pipeline is provided with a U-shaped pipe section, and a heating element is installed at the U-shaped pipe section. The heating element is used to heat the gas in the pipeline to 50℃-100℃.

7. A system for preventing quicklime blockage according to claim 6, characterized in that: The pipe is wrapped with insulation material, which keeps the gas temperature between 50°C and 80°C.

8. A system for preventing quicklime blockage according to claim 6, characterized in that: A nitrogen source is connected to the end of the pipe, which can supply nitrogen to the pipe.

9. A method for preventing quicklime from clogging, characterized in that, It employs a system for preventing quicklime blockage as described in any one of claims 1-8, in which 0.3-0.7 MPa of nitrogen gas is introduced into the pipeline, and the nitrogen gas blows out the quicklime accumulated inside and around the liner through the hollow structure and the holes.

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