Rotary kiln barrel heat collection device and system

Abstract

The utility model discloses a rotary kiln barrel heat collection device and system, the rotary kiln barrel heat collection device comprises an arc-shaped plate, a heat collection plate, a heat collection plate, a heat collection plate and a heat collection plate, the arc-shaped diameter of the arc-shaped plate is larger than the diameter of a rotary kiln barrel; the arc-shaped pipes are fixed to the arc-shaped inner side of the arc-shaped plate, and the arc-shaped pipes are arranged at intervals in the axis direction of the arc-shaped plate; the water inlet collecting pipe is arranged at the side part of the arc-shaped plate and is communicated with the plurality of arc-shaped pipes; the water outlet collecting pipe is arranged at the side part of the arc-shaped plate and is communicated with the plurality of arc-shaped pipes; the fixing frame is connected with the arc-shaped plate, and the fixing frame is used for fixing the arc-shaped plate to the upper side of the rotary kiln cylinder. The waste heat recovery device can recover waste heat on the surface of the rotary kiln cylinder, and has the advantages of being safe, reliable, high in recovery efficiency, energy-saving, environment-friendly and simple in structure.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving equipment technology, and further to a rotary kiln shell heat collection device and system. Background Technology

[0002] Rotary kilns are a type of calcination equipment used in industrial fields, primarily in cement rotary kilns, lime rotary kilns, alumina clinker calcination kilns, kaolin calcination kilns, carbon calcination kilns, and ore roasting. For a cement plant with a daily clinker production of 5000 t / d, the kiln shell has an outer diameter of 4.2–5.0 m, and the surface temperature of the kiln shell near the kiln head can reach 320–350℃. For a 200,000 ton / year kaolin calcination kiln, the rotary kiln diameter is 4.2 m, and the maximum surface temperature of the kiln shell can reach 280℃, resulting in significant residual heat. The heat from the kiln shell surface is directly released into the air through radiation and convection, leading to energy waste and environmental pollution.

[0003] Therefore, it is necessary to design a rotary kiln shell heat collection device and system to solve the above problems. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to provide a rotary kiln shell heat collection device and system that can recover waste heat from the surface of the rotary kiln shell, and has the advantages of being safe and reliable, having high recovery efficiency, being energy-saving and environmentally friendly, and having a simple structure.

[0005] To achieve the above objectives, this utility model provides a rotary kiln shell heat collection device, comprising:

[0006] An arc-shaped plate, wherein the arc diameter of the arc-shaped plate is larger than the diameter of the rotary kiln cylinder;

[0007] Several arc-shaped tubes are fixed to the inner arc of the arc plate, and the several arc-shaped tubes are arranged at intervals along the axial direction of the arc plate.

[0008] The water inlet manifold is located on the side of the arc-shaped plate and is connected to several of the arc-shaped pipes;

[0009] A water outlet manifold is located on the side of the arc-shaped plate and is connected to several of the arc-shaped pipes;

[0010] A fixing frame is connected to the arc-shaped plate, and the fixing frame is used to fix the arc-shaped plate to the upper side of the rotary kiln cylinder.

[0011] In some embodiments, a plurality of spaced support bars are provided on the inner side of the arc-shaped plate. The support bars are arranged along the axial direction of the arc-shaped plate and are disposed between the arc-shaped plate and the arc-shaped tube. The support bars are fixedly connected to the arc-shaped plate and the arc-shaped tube respectively.

[0012] In some embodiments, the arc-shaped plate is a steel plate, the support strip is a steel bar, the arc-shaped tube is a steel pipe, the support strip is welded and fixed to the arc-shaped plate, and each arc-shaped tube is welded and fixed to several support strips respectively.

[0013] In some embodiments, the plurality of the arc-shaped pipes are divided into at least one group of arc-shaped pipes, and each group of arc-shaped pipes is connected to the inlet manifold and the outlet manifold respectively.

[0014] In some embodiments, the inlet manifold and the outlet manifold are located on opposite sides of the arc-shaped plate, or the inlet manifold and the outlet manifold are located on the same side of the arc-shaped plate.

[0015] In some embodiments, several arc-shaped tubes within each group of arc-shaped tubes are connected end to end in sequence and arranged in a serpentine pattern along the axial direction of the arc-shaped plate.

[0016] In some embodiments, a plurality of arc-shaped pipes in each group of arc-shaped pipes are evenly spaced along the axial direction of the arc-shaped plate, one end of each of the arc-shaped pipes is connected to the inlet manifold, and the other end of each of the arc-shaped pipes is connected to the outlet manifold.

[0017] In some implementations, it also includes:

[0018] An insulation layer is provided, which covers the side of the arc-shaped plate away from the arc-shaped tube.

[0019] According to another aspect of the present invention, the present invention further provides a rotary kiln shell heat collection system, including the rotary kiln shell heat collection device as described in any one of the above, and further including:

[0020] The rotary kiln shell has an arc-shaped plate disposed on its upper side, and the central angle of the arc-shaped plate is not greater than 180°.

[0021] In some implementations, it also includes:

[0022] The first water tank is connected to the outlet manifold via a first pipeline;

[0023] A heat exchange station, wherein the heat exchange station is connected to the first water tank via a second pipeline, and a first water pump is installed on the second pipeline;

[0024] The second water tank is connected to the heat exchange station via a third pipeline and to the inlet manifold via a fourth pipeline, on which a second water pump is installed.

[0025] Compared with the prior art, the rotary kiln shell heat collection device and system provided by this utility model have the following beneficial effects:

[0026] In this invention, several arc-shaped tubes are fixed to the inner side of an arc-shaped plate by support bars, which has the advantages of stable structure and convenient processing; the reasonable layout of several arc-shaped tubes realizes radiative heat exchange and enhances the heat exchange effect; setting the inlet and outlet water manifolds on the side of the rotary kiln body not only facilitates installation, but also facilitates later maintenance; this device can realize the recovery of waste heat from the rotary kiln body, and has the advantages of energy saving, environmental protection, simple structure, and high waste heat utilization rate. Attached Figure Description

[0027] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0028] Figure 1 This is a schematic diagram of the structure of the rotary kiln shell heat collection device according to a preferred embodiment of the present invention;

[0029] Figure 2 This is a side view of a partial structure of the rotary kiln shell heat collection device according to a preferred embodiment of this utility model;

[0030] Figure 3 This is a top view of a partial structure of the rotary kiln shell heat collection device according to a preferred embodiment of this utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the fixing frame according to a preferred embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the rotary kiln shell heat collection system, a preferred embodiment of this utility model.

[0033] Explanation of icon numbers:

[0034] 1. Arc-shaped plate, 2. Arc-shaped pipe, 3. Inlet manifold, 4. Outlet manifold, 5. Fixing frame, 51. Vertical support, 52. Diagonal support, 53. Protective cover, 6. Support bar, 8. Rotary kiln body, 9. First water tank, 10. Heat exchange station, 11. Second water tank, 12. First pipeline, 13. Second pipeline, 14. Third pipeline, 15. Fourth pipeline, 16. First water pump, 17. Second water pump. Detailed Implementation

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0036] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0037] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0038] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] In one embodiment, refer to the appendix to the specification. Figures 1 to 4 The present invention provides a rotary kiln shell heat collection device, comprising: an arc-shaped plate 1, a plurality of arc-shaped pipes 2, an inlet manifold 3, an outlet manifold 4, and a fixing frame 5. The arc diameter of the arc-shaped plate 1 is larger than the diameter of the rotary kiln shell 8. The plurality of arc-shaped pipes 2 are fixed to the inner side of the arc of the arc-shaped plate 1, and the plurality of arc-shaped pipes 2 are arranged at intervals along the axial direction of the arc-shaped plate 1. The inlet manifold 3 is disposed on the side of the arc-shaped plate 1 and communicates with the plurality of arc-shaped pipes 2. The outlet manifold 4 is disposed on the side of the arc-shaped plate 1 and communicates with the plurality of arc-shaped pipes 2. The fixing frame 5 is connected to the arc-shaped plate 1 and is used to fix the arc-shaped plate 1 to the upper side of the rotary kiln shell 8.

[0041] In this invention, several arc-shaped pipes 2 are arranged at intervals along the axial direction of the arc-shaped plate 1, which is parallel to the axial direction of the rotary kiln shell 8. The inlet manifold 3 and the outlet manifold 4 are located at the ends of the arc-shaped pipes 2, that is, on the sides of the arc-shaped plate 1 and the rotary kiln shell 8. Setting the inlet manifold 3 and the outlet manifold 4 on the sides of the rotary kiln shell 8 not only facilitates installation but also facilitates subsequent maintenance. The heat exchange medium enters the several arc-shaped pipes 2 through the inlet manifold 3, absorbs the heat on the surface of the rotary kiln shell 8, and then enters the outlet manifold 4, and is then transported to a distant end for heat storage or use. This device can realize the recovery of waste heat from the rotary kiln shell and has the advantages of energy saving, environmental protection, simple structure, and high waste heat utilization rate.

[0042] In one embodiment, refer to the appendix to the specification. Figures 1 to 4 The inner side of the arc plate 1 is provided with several spaced support bars 6. The support bars 6 are arranged along the axial direction of the arc plate 1 and are located between the arc plate 1 and the arc tube 2. The support bars 6 are fixedly connected to the arc plate 1 and the arc tube 2 respectively.

[0043] Specifically, the arc-shaped plate 1 is a steel plate, the support strip 6 is a steel strip, and the arc-shaped tube 2 is a steel pipe. The support strip 6 is welded and fixed to the arc-shaped plate 1, and each arc-shaped tube 2 is welded and fixed to several support strips 6. During processing, several support strips 6 are first welded and fixed to the inner side of the arc-shaped plate 1 at intervals along the axial direction of the arc-shaped plate 1, and then each arc-shaped tube 2 is spot-welded to several support strips 6 to fix the arc-shaped tube 2. This method has the advantage of high processing efficiency.

[0044] Reference manual attached Figure 3 Several arc-shaped pipes 2 are divided into at least one group of arc-shaped pipes, and each group of arc-shaped pipes is connected to the inlet manifold 3 and the outlet manifold 4 respectively. The inlet manifold 3 and the outlet manifold 4 are located at the two ends of the arc-shaped plate 1 respectively, or the inlet manifold 3 and the outlet manifold 4 are located at the same end of the arc-shaped plate 1.

[0045] In each group of arc-shaped tubes, several arc-shaped tubes 2 are connected end to end and arranged in a serpentine pattern along the axis of the arc-shaped plate 1. Alternatively, several arc-shaped tubes 2 in each group of arc-shaped tubes are evenly spaced along the axis of the arc-shaped plate 1, with one end of each arc-shaped tube 2 connected to the inlet manifold 3 and the other end connected to the outlet manifold 4. Of course, both of the above methods can also be combined and applied to the rotary kiln shell heat collection device.

[0046] Reference manual attached Figure 4The support frame 5 includes several vertical supports 51, several diagonal supports 52, and a protective cover 53. The bottoms of the vertical supports 51 are fixed to the ground or base, and the tops of the vertical supports 51 are fixedly connected to the bottom of the arc-shaped plate 1. Alternatively, a connector can be provided between the vertical supports 51 and the arc-shaped plate 1 to achieve their fixation. The diagonal supports 52 are staggered among the vertical supports 51. The protective cover 53 is fixed to the top of the vertical supports 51. The inlet manifold 3 and the outlet manifold 4 are located inside the protective cover 53, so that the protective cover 53 can protect and insulate the inlet manifold 3 and the outlet manifold 4.

[0047] Further, refer to the attached instruction manual. Figure 2 The rotary kiln cylinder heat collection device also includes: a heat insulation layer, which covers the side of the arc plate 1 away from the arc tube 2.

[0048] In this embodiment, several arc-shaped tubes 2 are fixed to the inner side of the arc-shaped plate 1 by support bars 6, which has the advantages of stable structure and convenient processing; radiation heat exchange is achieved by the reasonable layout of several arc-shaped tubes 2, and the heat exchange effect is enhanced; this device can realize the recovery of waste heat of rotary kiln cylinder, and has the advantages of energy saving and environmental protection, simple structure and high waste heat utilization rate.

[0049] According to another aspect of this utility model, reference is made to the appended specification. Figure 5 This utility model further provides a rotary kiln shell heat collection system, including the rotary kiln shell heat collection device as described in any one of the above, and further including: a rotary kiln shell 8, an arc-shaped plate 1 disposed on the upper side of the rotary kiln shell 8, the central angle of the arc-shaped plate 1 being no greater than 180°, for example: the central angle of the arc-shaped plate 1 being equal to 180°, the coverage area of ​​the arc-shaped plate 1 on the cross-section of the rotary kiln shell being equal to half of the cross-section of the rotary kiln shell, the arc-shaped plate 1 being disposed on the upper left or upper right side of the rotary kiln shell 8, and of course, the arc-shaped plate 1 can also be disposed directly above the rotary kiln shell 8.

[0050] Furthermore, the rotary kiln shell heat collection system also includes: a first water tank 9, a heat exchange station 10, and a second water tank 11. The first water tank 9 is connected to the outlet water manifold 4 via a first pipeline 12. The heat exchange station 10 is connected to the first water tank 9 via a second pipeline 13, and a first water pump 16 is installed on the second pipeline 13. The second water tank 11 is connected to the heat exchange station 10 via a third pipeline 14, and the second water tank 11 is connected to the inlet water manifold 3 via a fourth pipeline 15, and a second water pump 17 is installed on the fourth pipeline 15.

[0051] In practical applications, after absorbing heat in the rotary kiln's heat collection device, the circulating water is discharged from the outlet manifold 4 and temporarily stored in the first water tank 9 via the first pipeline 12. When the heat exchange station 10 needs heat, the first water pump 16 on the second pipeline 13 supplies hot circulating water to the heat exchange station 10. The heat exchange station 10 can extract heat through radiation or directly use hot circulating water. If the heat exchange station 10 extracts heat through radiation, the circulating water after heat exchange enters the second water tank 11 for temporary storage via the third pipeline 14. If the heat exchange station 10 directly uses hot circulating water, it needs to be connected to tap water or other water sources for replenishment at the second water tank 11. The circulating water in the second water tank 11 is drawn into the inlet manifold 3 by the second water pump 17 on the fourth pipeline 15, then enters several arc-shaped pipes 2 for heat exchange before being discharged from the outlet manifold 4, thus completing the cycle.

[0052] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0053] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A rotary kiln shell heat collection device, characterized in that, include: An arc-shaped plate, wherein the arc diameter of the arc-shaped plate is larger than the diameter of the rotary kiln cylinder; Several arc-shaped tubes are fixed to the inner arc of the arc plate, and the several arc-shaped tubes are arranged at intervals along the axial direction of the arc plate. The water inlet manifold is located on the side of the arc-shaped plate and is connected to several of the arc-shaped pipes; A water outlet manifold is located on the side of the arc-shaped plate and is connected to several of the arc-shaped pipes; A fixing frame is connected to the arc-shaped plate, and the fixing frame is used to fix the arc-shaped plate to the upper side of the rotary kiln cylinder.

2. The rotary kiln shell heat collection device according to claim 1, characterized in that, The inner side of the arc-shaped plate is provided with a number of spaced support bars. The support bars are arranged along the axial direction of the arc-shaped plate and are located between the arc-shaped plate and the arc-shaped tube. The support bars are fixedly connected to the arc-shaped plate and the arc-shaped tube respectively.

3. The rotary kiln shell heat collection device according to claim 2, characterized in that, The arc-shaped plate is a steel plate, the support strip is a steel strip, the arc-shaped tube is a steel pipe, the support strip is welded and fixed to the arc-shaped plate, and each arc-shaped tube is welded and fixed to several support strips respectively.

4. The rotary kiln shell heat collection device according to claim 1, characterized in that, The plurality of the arc-shaped pipes are divided into at least one group of arc-shaped pipes, and each group of arc-shaped pipes is connected to the inlet manifold and the outlet manifold respectively.

5. The rotary kiln shell heat collection device according to claim 4, characterized in that, The inlet manifold and the outlet manifold are located on opposite sides of the arc-shaped plate, or the inlet manifold and the outlet manifold are located on the same side of the arc-shaped plate.

6. The rotary kiln shell heat collection device according to claim 5, characterized in that, The arc-shaped tubes in each group are connected end to end in sequence and arranged in a serpentine pattern along the axis of the arc-shaped plate.

7. The rotary kiln shell heat collection device according to claim 5, characterized in that, Within each group of arc-shaped pipes, several arc-shaped pipes are evenly spaced along the axial direction of the arc-shaped plate. One end of each arc-shaped pipe is connected to the inlet manifold, and the other end of each arc-shaped pipe is connected to the outlet manifold.

8. The rotary kiln shell heat collection device according to claim 1, characterized in that, Also includes: An insulation layer is provided, which covers the side of the arc-shaped plate away from the arc-shaped tube.

9. A rotary kiln shell heat collection system, characterized in that, The rotary kiln shell heat collection device as described in any one of claims 1-8 further includes: The rotary kiln shell has an arc-shaped plate disposed on its upper side, and the central angle of the arc-shaped plate is no greater than 180°.

10. The rotary kiln shell heat collection system according to claim 9, characterized in that, Also includes: The first water tank is connected to the outlet manifold via a first pipeline; A heat exchange station, wherein the heat exchange station is connected to the first water tank via a second pipeline, and a first water pump is installed on the second pipeline; The second water tank is connected to the heat exchange station via a third pipeline and to the inlet manifold via a fourth pipeline, on which a second water pump is installed.

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