Fluidized bed heat exchange device
By installing an adjustable baffle assembly on the inner side wall of the heat exchange chamber of the fluidized bed sludge dryer to buffer the high-speed fluidized air, the problem of inner wall wear is solved, and cost control and equipment life are achieved.
Patent Information
- Application Number
- CN202411566515.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-01-03
AI Technical Summary
The vertical fluidized bed sludge drying rack of existing fluidized bed sludge dryers is severely worn due to high wind speed during the drying process, resulting in shortening of maintenance cycles and increasing costs. The existing solution is to increase wall thickness or use resistance. abrasive materials, but this increases the cost of purchasing equipment.
The inner side wall of the heat exchange chamber of the fluidized bed heat exchange device is equipped with a baffle assembly with adjustable density and inclination angle. The fluidized wind is sprayed through the nozzle and the wind direction is adjusted. The baffle assembly is used to buffer the fluidized wind and reduce the wear of the wind speed on the inner wall. .
It effectively reduces the wear of fluidized air on the inner wall, extends the service life of the equipment, and reduces costs, and is suitable for various types of heat exchange chamber protection.
Smart Images
Figure CN119245398A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electronic products, and more specifically, to a fluidized bed heat exchange device. Background Art
[0002] A large amount of residual sludge is generated during the wastewater treatment process, and the moisture content is generally around 60%. In the process of resource utilization, the moisture content of the wet sludge needs to be reduced to a preset range in order to stably burn in the circulating fluidized bed boiler. Among them, the fluidized bed sludge dryer is a device that uses fluidized bed technology to dry sludge. It places the sludge in a fluidized bed and uses hot gas to pass from below to fluidize the sludge particles, thereby achieving the purpose of drying.
[0003] However, the vertical fluidized bed sludge drying rack used in the existing fluidized bed sludge drying requires intense suspended heat exchange in the dryer, and the fluidization wind speed is relatively high. The fluidization wind speed at the center of the dryer is generally 6-10m / s, which will cause great wear on the inner walls around the dryer, reducing the inspection and maintenance cycle and increasing the operation and maintenance costs. In addition, the current way to overcome the internal wear of the dryer is mainly to increase the wall thickness of the dryer heat exchange chamber or use wear-resistant materials, but these two methods will also increase the equipment procurement cost.
[0004] Therefore, there is an urgent need for a fluidized bed heat exchange device that can reduce the wear on the inner walls around the dryer while controlling the cost. Summary of the invention
[0005] In view of the above problems, the purpose of the present invention is to provide a fluidized bed heat exchange device to solve the problem that the existing dryers increase the wall thickness of the heat exchange chamber of the dryer or use wear-resistant materials to overcome the wear of the inner wall, which leads to increased equipment costs.
[0006] The fluidized bed heat exchange device provided by the present invention comprises a bracket, a heat exchange chamber arranged on the bracket and a nozzle located in the heat exchange chamber; wherein a baffle assembly with adjustable density and inclination angle is arranged on the inner wall of the heat exchange chamber; the nozzle is used to spray fluidizing air into the heat exchange chamber, and the baffle assembly is used to adjust the wind direction of the fluidizing air in the heat exchange chamber; and the density and inclination angle of the baffle assembly are adjusted according to the wind speed of the fluidizing air.
[0007] In addition, an optional technical solution is that the baffle assembly includes a vertical bracket and an inclined baffle arranged on the vertical bracket; the inclined baffle is inclined toward the side where the nozzle is located.
[0008] In addition, an optional technical solution is that at least two vertical brackets are arranged around the inner wall of the heat exchange chamber; and the inclined baffle is welded and fixed on the vertical bracket.
[0009] In addition, an optional technical solution is that the inclined baffles located on the same vertical bracket are spaced apart from each other, and the spacing between two adjacent inclined baffles is 300-600 mm.
[0010] In addition, an optional technical solution is that the inclined baffles located on different vertical brackets are staggered with each other, or the inclined baffles located on different vertical brackets are located on the same horizontal line.
[0011] In addition, an optional technical solution is that the angle between the inclined baffle and the side wall of the heat exchange chamber is in the range of 20°-30°.
[0012] In addition, an optional technical solution is that at least one branch plate extending from the inclined baffle is provided; and the branch plates are distributed obliquely on the inclined baffle.
[0013] In addition, an optional technical solution is that the inclined baffle is movably connected to the vertical bracket via a hinge; and the inclined baffle can adjust an inclination angle via the hinge.
[0014] In addition, an optional technical solution is that the distance between two adjacent vertical supports ranges from 900mm to 1100mm.
[0015] In addition, an optional technical solution is to provide a wear-resistant plate between two adjacent vertical supports or between two adjacent inclined baffles.
[0016] By utilizing the above-mentioned fluidized bed heat exchange device, a baffle assembly is set on the inner wall of the heat exchange chamber. When fluidizing air is sprayed into the heat exchange chamber through a nozzle, the wind direction of the fluidizing air in the heat exchange chamber can be adjusted by the baffle assembly, thereby buffering the fluidizing air near the inner wall of the heat exchange chamber and reducing the wear of the fluidizing wind on the inner wall. The device has a simple structure and low cost. It can be suitable for various types of heat exchange chamber protection by adjusting the setting position and density of the baffle assembly.
[0017] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more clear and easy to understand. In the accompanying drawings:
[0019] Figure 1Schematic diagram of the internal structure of a fluidized bed heat exchange device according to an embodiment of the present invention.
[0020] The reference numerals include: vertical support 1 , heat exchange chamber 2 , inclined baffle 3 .
[0021] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION
[0022] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.
[0023] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.
[0025] In order to describe the fluidized bed heat exchange device in the present invention in detail, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0026] Figure 1 The internal schematic structure of a fluidized bed heat exchange device according to an embodiment of the present invention is shown.
[0027] like Figure 1As shown, the fluidized bed heat exchange device implemented in the present invention includes a bracket, a heat exchange chamber 2 arranged on the bracket and a nozzle located in the heat exchange chamber 2, wherein the nozzle is connected to the air inlet of the heat exchange chamber 2 and is used to spray fluidizing air into the heat exchange chamber 2; wherein, a baffle assembly with adjustable density and angle is arranged on the inner wall of the heat exchange chamber 2, and the wind direction of the fluidizing air in the heat exchange chamber 2 can be adjusted by the baffle assembly, and the wind speed near the side wall can be controlled to reduce the wear of the inner side wall of the heat exchange chamber 2 by the fluidizing air carrying mud and dirt, and the density and inclination angle of the baffle assembly are adjusted according to the wind speed of the fluidizing air.
[0028] Among them, the baffle assembly further includes a plurality of vertical brackets and a plurality of inclined baffles 3 arranged on each vertical bracket. The inclined baffle 3 is inclined toward the side where the nozzle is located, thereby partially blocking the fluidizing air entering from the nozzle side, that is, the upward-running fluidizing air is blocked by the inclined baffle 3, thereby offsetting its kinetic energy near the inner wall of the heat exchange chamber 2, reducing its wind speed near the inclined baffle 3, and effectively reducing the wear of the inner wall by the dust-containing gas.
[0029] Specifically, the vertical bracket may include at least two vertical brackets 1 distributed around the inner wall of the heat exchange chamber 2. The inclined baffle 3 can be fixed on each vertical bracket 1 by welding. The inclined baffle 3 can be limited in the heat exchange chamber 2 by the vertical bracket 1. The relative position of the vertical bracket 1 can be adjusted to adjust the positional relationship of each inclined baffle 3, thereby controlling the distribution position and density of the inclined baffle 3. It can be applicable to the protection of the inner wall of heat exchange chambers 2 of various types and sizes.
[0030] In a specific embodiment of the present invention, the inclined baffles 3 located on the same vertical bracket 1 are spaced apart from each other, the spacing between two adjacent inclined baffles 3 can be set to 300mm-600mm, and the distance between two adjacent vertical brackets 1 ranges from 900mm to 1100mm. Among them, the distance between the fixed positions of the two adjacent inclined baffles 3 and the vertical bracket 1 can be set to 500mm, and the size of the inclined baffle 3 can be set to 100mm. In the vertical direction of the fluidizing wind, there is no overlap between the two adjacent inclined baffles 3, so that the fluidizing wind is buffered and changed in direction by the inclined baffle 3, and then flows out from the bottom of the other inclined baffle 3, forming the direction shown in the figure. The fluidizing wind after changing direction plays a hedging role against the fluidizing wind moving upward, thereby reducing its local wind speed at the current position, and can reduce the existing wind speed of 6-10m / s to about 2-3m / s, thereby effectively reducing the wear of the dust-laden airflow on the inner wall of the heat exchange chamber 2.
[0031] It should be noted that in order to further protect the inner wall so that the fluidizing wind can form a uniform and stable low-speed wind around it, the inclined baffles 3 located on different vertical supports 1 can be arranged to be staggered with each other, or the inclined baffles 3 located on different vertical supports 1 can be located on the same horizontal line, so that the inclined baffles 3 are reasonably distributed on the inner wall side of the heat exchange chamber 2, thereby protecting the inner wall of each heat exchange chamber from wear.
[0032] In addition, since the wind speed of the fluidizing air entering from the nozzle may be different at different positions in the heat exchange chamber 2, the setting density of the inclined baffles 3 can be adjusted accordingly according to the difference in wind speed of the fluidizing air at different positions. In positions where the fluidizing wind speed is larger, the setting density of the inclined baffles 3 can be increased, and in positions where the fluidizing wind speed is smaller, the setting density of the inclined baffles 3 can be reduced, so as to protect the inner wall side from wear while not affecting the performance of the heat exchange device.
[0033] In another specific embodiment of the present invention, the angle between the inclined baffle 3 and the side wall of the heat exchange chamber 2 can range from 20° to 30°, wherein the angle between the inclined baffle 3 and the side wall of the heat exchange chamber 2 can be set to 25°, and the length of the inclined baffle 3 is 100 mm. In the width direction, the inclined baffle 3 can be arranged in a ring around the inner wall of the heat exchange chamber 2, or can be arranged to be distributed intermittently. Due to the buffering effect of the inclined baffle 3, when there are certain spacing gaps, the inner wall at its location can also be protected, and it can be flexibly adjusted according to the processing requirements.
[0034] Furthermore, in order to improve the wind speed regulating function of the inclined baffle 3, at least one branch plate extending along the inclined baffle 3 can be provided on the inclined baffle 3; the branch plate is distributed obliquely on the inclined baffle 3, and the fluidizing wind is effectively isolated from the inner wall by the inclined baffle 3 and the branch plate. During long-term use, the inclined baffle 3 can be replaced regularly. The inclined baffle and the branch plate can effectively extend the service life of the inner wall of the heat exchange chamber 2.
[0035] It should be noted that for different fluidizing winds, the required inclination angle of the inclined baffle 3 may be different. Therefore, in order to improve the flexibility of the inclined baffle 3 and make it suitable for heat exchange devices in various scenarios, the inclined baffle 3 can be movably connected to the vertical bracket 1 through a hinge. The inclined baffle 3 can adjust its inclination angle through the hinge, and then the inclined baffle 3 after the angle adjustment can be locked in position through a fixed locking device, thereby improving its flexibility during application.
[0036] In addition, a wear-resistant plate may be provided between two adjacent vertical supports 1 or between two adjacent inclined baffles 3 to further protect the inner wall of the heat exchange chamber 2 .
[0037] According to the fluidized bed heat exchange device of the present invention, a baffle assembly is arranged on the inner wall of the heat exchange chamber. When the fluidizing air is sprayed into the heat exchange chamber through the nozzle, the wind direction of the fluidizing air in the heat exchange chamber can be adjusted by the inclined baffle of the baffle assembly, thereby playing a role in buffering the fluidizing air near the inner wall of the heat exchange chamber, and finally reducing the wear of the fluidizing wind on the inner wall. The device has a simple structure and low cost, and the inclination angle and setting density of the inclined baffle can be flexibly adjusted, and is suitable for various types of heat exchange chamber scenes.
[0038] The fluidized bed heat exchange device according to the present invention is described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the fluidized bed heat exchange device proposed by the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.
Claims
1. A fluidized bed heat exchange device, characterized in that: It comprises a bracket, a heat exchange chamber arranged on the bracket and a nozzle located in the heat exchange chamber; wherein, A baffle assembly with adjustable density and inclination angle is provided on the inner side wall of the heat exchange chamber; The nozzle is used to spray fluidizing air into the heat exchange chamber, and the baffle assembly is used to adjust the wind direction of the fluidizing air in the heat exchange chamber; and The density and the inclination angle of the baffle assembly are adjusted according to the wind speed of the fluidizing wind.
2. The fluidized bed heat exchange device according to claim 1, characterized in that: The baffle assembly includes a vertical bracket and an inclined baffle arranged on the vertical bracket; The inclined baffle is inclined toward the side where the nozzle is located.
3. The fluidized bed heat exchange device according to claim 2, characterized in that: At least two vertical brackets are arranged around the inner wall of the heat exchange chamber; The inclined baffle is welded and fixed on the vertical bracket.
4. The fluidized bed heat exchange device according to claim 3, characterized in that: The inclined baffles on the same vertical bracket are spaced apart from each other, and the spacing between two adjacent inclined baffles is 300-600 mm.
5. The fluidized bed heat exchange device according to claim 3, characterized in that: The inclined baffles located on different vertical brackets are staggered with each other, or the inclined baffles located on different vertical brackets are located on the same horizontal line.
6. The fluidized bed heat exchange device according to claim 2, characterized in that: The angle between the inclined baffle and the side wall of the heat exchange chamber is in the range of 20°-30°.
7. The fluidized bed heat exchange device according to claim 2, characterized in that: At least one branch plate is extended from the inclined baffle plate; The branch plates are distributed obliquely on the inclined baffle.
8. The fluidized bed heat exchange device according to claim 2, characterized in that: The inclined baffle is movably connected to the vertical bracket via a hinge; The tilting baffle is adjusted in tilting angle by the hinge.
9. The fluidized bed heat exchange device according to claim 3, characterized in that: The distance between two adjacent vertical supports ranges from 900mm to 1100mm.
10. The fluidized bed heat exchange device according to claim 3, characterized in that: A wear-resistant plate is arranged between two adjacent vertical supports or between two adjacent inclined baffles.