Fluidized bed heat exchange device

Abstract

The utility model provides a fluidized bed heat exchange device. The fluidized bed heat exchange device comprises a support, a heat exchange chamber arranged on the support and a nozzle located in the heat exchange chamber. A baffle assembly is arranged on the inner side wall of the heat exchange chamber. The nozzle is used for spraying fluidization air into the heat exchange chamber, and the baffle assembly is used for adjusting the air direction of the fluidization air in the heat exchange chamber. According to the utility model, the air direction of the fluidizing air in the heat exchange chamber can be adjusted, and the abrasion of dust-containing gas to the inner wall of the heat exchange chamber is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic product technical field, more specifically, relate to a fluidized bed heat exchange device. BACKGROUND

[0002] A large amount of residual sludge is produced in the wastewater treatment process, and the moisture content is generally about 60%. In the process of resource utilization, the moisture in the wet sludge needs to be reduced to a preset range, so that it can be stably burned in the circulating fluidized bed boiler. Among them, the fluidized bed sludge dryer is a device for drying sludge by using fluidized bed technology. It puts the sludge in the fluidized bed, uses hot gas to enter from the bottom, and makes the sludge particles in a fluidized state, so as to achieve the purpose of drying.

[0003] However, the vertical fluidized bed sludge drying frame selected by the existing fluidized bed sludge drying machine needs to be in a violent suspended state in the drying machine, and the fluidization wind speed is relatively high. The fluidization wind speed at the center position of the drying machine is generally 6-10 m / s, which will cause great wear to the inner wall around the drying machine, reduce the maintenance period, and increase the operation and maintenance cost. In addition, the current way to overcome the wear of the drying machine is to increase the wall thickness of the drying machine heat exchange chamber or use wear-resistant materials, but these two ways 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 of the inner wall around the drying machine while controlling the cost. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the purpose of the utility model is to provide a fluidized bed heat exchange device to solve the problem that the existing drying machine increases the wall thickness of the drying machine heat exchange chamber or uses wear-resistant materials to overcome the wear of the inner wall, which increases the equipment cost.

[0006] The fluidized bed heat exchange device provided by the utility model comprises a support, a heat exchange chamber arranged on the support, and a nozzle located in the heat exchange chamber. A baffle assembly is arranged on the inner side wall of the heat exchange chamber. The nozzle is used to spray fluidization wind into the heat exchange chamber, and the baffle assembly is used to adjust the wind direction of the fluidization wind in the heat exchange chamber.

[0007] In addition, the optional technical solution is that the baffle assembly comprises a vertical support and an inclined baffle arranged on the vertical support. The inclined baffle is inclined to the side where the nozzle is located.

[0008] In addition, the optional technical solution is that the vertical support is provided with at least two around the inner side wall of the heat exchange chamber. The inclined baffle is welded and fixed on the vertical support.

[0009] In addition, the optional technical solution is that the inclined baffles on the same vertical support are spaced apart from each other, and the distance between the adjacent two inclined baffles is 300-600 mm.

[0010] In addition, the optional technical solution is that the inclined baffles on different vertical supports are staggered or located on the same horizontal line.

[0011] In addition, the optional technical solution is that the angle between the inclined baffle and the side wall of the heat exchange chamber is 20-30°.

[0012] In addition, the optional technical solution is that at least one branch plate is arranged on the inclined baffle and extends out of the inclined baffle; and the branch plate is inclined on the inclined baffle.

[0013] In addition, the optional technical solution is that the inclined baffle and the vertical support are connected through a hinge; and the inclined baffle adjusts the inclination angle through the hinge.

[0014] In addition, the optional technical solution is that the distance between the adjacent two vertical supports is 900-1100 mm.

[0015] In addition, the optional technical solution is that a wear-resistant plate is arranged between the adjacent two vertical supports or the adjacent two inclined baffles.

[0016] By using the above-mentioned fluidized bed heat exchange device, the baffle assembly is arranged on the inner side 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 through the baffle assembly, so as to buffer the fluidizing air near the inner side wall of the heat exchange chamber, reduce the wear of the inner side wall by the fluidizing air, and the device has simple structure and low cost. By adjusting the arrangement position and density of the baffle assembly, the device is suitable for protecting various types of heat exchange chambers. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other purposes and results of the present application will be more apparent and easy to understand by referring to the following description in conjunction with the drawings, and with a more comprehensive understanding of the present application. In the drawings:

[0018] Figure 1 The internal structure of the fluidized bed heat exchange device according to the embodiment of the present application is shown.

[0019] The reference signs in the drawings include: vertical support 1, heat exchange chamber 2, inclined baffle 3.

[0020] The same reference signs in all the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0021] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It can be evident, however, that embodiments of the present application can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

[0022] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] It should be noted that the terms "first", "second", and the like in the description of the present application and the claims and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or server including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0024] To describe the fluidized bed heat exchanger in the present application in detail, the specific embodiments of the present application will be described in detail below in conjunction with the drawings.

[0025] Figure 1 The internal schematic structure of the fluidized bed heat exchanger according to the embodiments of the present application is shown.

[0026] As Figure 1 shown, as Figure 1As shown, the fluidized bed heat exchange device implemented by the present application comprises a support, a heat exchange chamber 2 arranged on the support, and a nozzle located in the heat exchange chamber 2, the nozzle being connected with the air inlet of the heat exchange chamber 2 and used for spraying the fluidizing air into the heat exchange chamber 2; wherein a baffle assembly with adjustable density and angle is arranged on the inner side wall of the heat exchange chamber 2, the wind direction of the fluidizing air in the heat exchange chamber 2 can be adjusted through the baffle assembly, the wind speed near the side wall is controlled, the abrasion of the fluidizing air carrying dirt to the inner side wall of the heat exchange chamber 2 is reduced, and the density and the inclination angle of the baffle assembly are adjusted according to the wind speed of the fluidizing air.

[0027] The baffle assembly further comprises a plurality of vertical supports 1 and a plurality of inclined baffles 3 arranged on each vertical support 1, the inclined baffles 3 are inclined to the side where the nozzle is located, thereby locally blocking the fluidizing air entering from the side of the nozzle, that is, the upward running fluidizing air is blocked by the inclined baffles 3, the kinetic energy of the fluidizing air near the inner side wall of the heat exchange chamber 2 is offset, the wind speed of the fluidizing air near the inclined baffles 3 is reduced, and the abrasion of the inner wall by the dust-containing gas is effectively reduced.

[0028] Specifically, the vertical support can comprise at least two vertical supports 1 distributed around the inner side wall of the heat exchange chamber 2, the inclined baffles 3 can be fixed on each vertical support 1 in a welded manner, the inclined baffles 3 can be limited in the heat exchange chamber 2 through the vertical supports 1, the relative position of the vertical supports 1 is adjusted to adjust the positional relationship of each inclined baffle 3, thereby controlling the distribution position and density of the inclined baffles 3, and the inner side wall protection of the heat exchange chamber 2 of various types and sizes can be applicable.

[0029] In one specific embodiment of the present application, the inclined baffles 3 located on the same vertical support 1 are arranged at intervals, the distance between the adjacent two inclined baffles 3 can be set to 300mm-600mm, and the distance between the adjacent two vertical supports 1 ranges from 900mm to 1100mm. Among them, the distance between the adjacent two inclined baffles 3 and the fixed position of the vertical support 1 can be set to 500mm, the size of the inclined baffle 3 can be set to 100mm, and in the vertical direction of the fluidizing air, there is no overlap between the adjacent two inclined baffles 3, so that the fluidizing air passes through the inclined baffles 3, is buffered and changes direction, and then flows out below another inclined baffle 3 to form the direction shown in the drawing. The fluidizing air after changing direction plays a role of counterflow to the upward moving fluidizing air, thereby reducing the local wind speed at the current position, and the existing wind speed of 6-10m / s can be reduced to about 2-3m / s, thereby effectively reducing the abrasion of the inner side wall of the heat exchange chamber 2 by the dust-containing airflow.

[0030] It should be noted that, in order to further protect the inner side wall, so that the fluidization wind can form uniform and stable low-speed wind around it, the inclined baffle 3 located on different vertical supports 1 can be arranged staggered with each other, or the inclined baffles 3 located on different vertical supports 1 are 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, and the inner side wall of the heat exchange chamber is protected from wear.

[0031] In addition, since the flow rate of the fluidization wind entering from the nozzle may be different at different positions in the heat exchange chamber 2, the setting density of the inclined baffle 3 can be adjusted according to the flow rate difference of the fluidization wind at different positions, the setting density of the inclined baffle 3 is increased at the position where the fluidization wind speed is larger, and the setting density of the inclined baffle 3 is reduced at the position where the fluidization wind speed is smaller, so that the inner wall side is protected from wear while the performance of the heat exchange device is not affected.

[0032] In another specific embodiment of the present application, the angle between the inclined baffle 3 and the side wall of the heat exchange chamber 2 can be 20°-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 100mm. In the width direction, the inclined baffle 3 can be annularly arranged around the inner side wall of the heat exchange chamber 2, or can be arranged in an intermittent manner. Due to the buffering effect of the inclined baffle 3, the inner side wall at the position with certain interval can also be protected, and the specific adjustment can be flexibly adjusted according to the processing requirements.

[0033] Further, in order to improve the wind speed adjustment effect of the inclined baffle 3, at least one branch plate extending from the inclined baffle 3 can be arranged on the inclined baffle 3; the branch plate is inclined on the inclined baffle 3, and the fluidization wind and the inner side wall are effectively isolated by the inclined baffle 3 and the branch plate. During long-term use, the inclined baffle 3 can be replaced regularly, and the inclined baffle and the branch plate can effectively prolong the service life of the inner side wall of the heat exchange chamber 2.

[0034] It should be noted that the inclined angle of the inclined baffle 3 required for different fluidization winds may be different, therefore, in order to improve the flexibility of the inclined baffle 3, it can be applied to heat exchange devices in various scenes, the inclined baffle 3 and the vertical support 1 can be connected by a hinge, the inclined angle of the inclined baffle 3 can be adjusted by the hinge, and then the inclined baffle 3 after angle adjustment can be position-locked by a fixed locking device, so as to improve the flexibility in the application process.

[0035] In addition, a wear-resistant plate can also be arranged between adjacent two vertical supports 1 or between adjacent two inclined baffles 3, further protecting the inner side wall of the heat exchange chamber 2.

[0036] According to the fluidized bed heat exchange device of the utility model above, the baffle assembly is arranged on the inner side wall of the heat exchange chamber, when the fluidizing air is sprayed into the heat exchange chamber through the nozzle, the air direction of the fluidizing air in the heat exchange chamber can be adjusted through the inclined baffle of the baffle assembly, thereby playing the role of buffering the fluidizing air near the inner side wall of the heat exchange chamber, finally reducing the abrasion of the fluidizing air to the inner side wall, the device structure is simple, the cost is low, the inclined angle and the setting density of the inclined baffle can be flexibly adjusted, and the device is suitable for various types of heat exchange chamber scenes.

[0037] The fluidized bed heat exchange device according to the utility model is described above with reference to the drawings in an exemplary manner. However, those skilled in the art should understand that various improvements can be made to the fluidized bed heat exchange device of the utility model above without departing from the content of the utility model. Therefore, the protection scope of the utility model should be determined by the content of the appended 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 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.

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 supports are provided 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 located on the same vertical bracket are spaced apart from each other, and the distance 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 supports are staggered with each other, or the inclined baffles located on different vertical supports 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 ranges from 20° to 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; 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 tilt 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 provided between two adjacent vertical supports or between two adjacent inclined baffles.

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