Herringbone rear arch baffle structure for fluidized bed and fluidized bed

Abstract

The utility model discloses a herringbone rear arch baffle structure for a fluidized bed and the fluidized bed. The herringbone rear arch baffle structure comprises a first baffle and a second baffle, the first baffle and the second baffle are obliquely arranged, the top of the first baffle and the top of the second baffle are connected through a plurality of hinges, so that the first baffle and the second baffle are of a herringbone structure, and the bottom of the first baffle and the bottom of the second baffle are fixed to the hearth wall of the fluidized bed through a plurality of V-shaped groove claw nails respectively; according to the herringbone rear arch baffle structure for the fluidized bed, provided by the utility model, the utilization rate of activated steam can be increased, particles can be controlled to be locally concentrated, the problems of activated steam distribution and particle accumulation management of a traditional fluidized bed are effectively solved, and an economical and environment-friendly solution is provided; the method is suitable for powder treatment industries such as activated carbon production.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fluidized bed reactor optimization design technical field, concretely relates to a herringbone rear arch baffle structure for fluidized bed and fluidized bed. BACKGROUND

[0002] The statements herein merely provide background information related to the utility model and do not necessarily constitute the prior art.

[0003] In the field of fluidized bed reactors, due to its excellent material mixing and heat exchange efficiency, fluidized bed technology has been applied in various industrial processes, such as activated carbon production and other powder material processing. Although the fluidized bed technology has many advantages, it still faces several technical challenges during operation, especially in terms of steam distribution optimization and bed material management.

[0004] Under normal circumstances, the fluidized bed reactor will have problems such as bed material loss, fly ash blowing away, and low ventilation utilization rate during operation. These problems not only reduce the reaction efficiency of the system, but also increase the maintenance cost, especially under high temperature and high flow rate operating conditions. In addition, the unevenness of steam distribution may form hot spots inside the reactor, affecting product quality and production efficiency.

[0005] In the prior art, the fluidized bed reactor usually uses standard flat baffle to guide steam and control particles, such as Chinese invention patent CN113493369A, which discloses a baffle for fluidized bed, which is provided with multiple layers of baffles, but the traditional standard baffle design fails to effectively solve the problems of uneven mixing of steam and material and particle entrainment loss. SUMMARY

[0006] The purpose of the utility model is to provide a herringbone rear arch baffle structure for fluidized bed and fluidized bed, which can ensure the full mixing of steam and material, while avoiding the direct upward flight of bed material along the airflow to the furnace outlet, reducing the loss of fine particle bed material.

[0007] In order to achieve the above purpose, the utility model is realized by the following technical scheme:

[0008] Firstly, the embodiment of the utility model provides a herringbone rear arch baffle structure for fluidized bed, which comprises a first baffle and a second baffle; the first baffle and the second baffle are inclinedly arranged, and the top of the first baffle and the second baffle is connected by a plurality of hinges, so that the first baffle and the second baffle form a herringbone structure, and the bottom of the first baffle and the second baffle is fixed on the furnace wall of the fluidized bed by a plurality of V-shaped slot clamps.

[0009] As a further technical scheme, the included angle between the first baffle and the second baffle is 70-80°.

[0010] As a further technical solution, the fluidized bed is a rectangular structure, the front end face of the fluidized bed is provided with a feeding port, the rear end face is provided with a discharging port, and the left and right opposite two side faces of the fluidized bed are provided with stepped faces, and the bottom of the first baffle and the second baffle is fixed on the stepped face.

[0011] As a further technical solution, the top of the first baffle and the second baffle is spaced apart from the top of the fluidized bed by a certain distance, and the front end face and the rear end face of the first baffle and the second baffle are spaced apart from the inner wall face of the fluidized bed by a certain distance.

[0012] As a further technical solution, the plurality of hinges are uniformly distributed along the length direction of the baffle.

[0013] As a further technical solution, the first baffle and the second baffle are provided with a plurality of reinforcing ribs, the plurality of reinforcing ribs are uniformly distributed along the length direction of the baffle, and the reinforcing ribs are arranged on the lower surface of the baffle.

[0014] As a further technical solution, the first baffle and the second baffle are made of high-temperature corrosion-resistant metal plates.

[0015] As a further technical solution, the hinge comprises a hinge head, a connecting shaft and a base connected in sequence, the hinge head is fixed on the first baffle, and the base is fixed on the second baffle.

[0016] As a further technical solution, the V-shaped groove claw nail is installed on the hearth wall of the fluidized bed in a pre-installed manner, and the V-shaped groove claw nail is welded and connected with the baffle.

[0017] In the second aspect, the embodiments of the utility model provide a fluidized bed which comprises the herringbone rear arch baffle structure of the first aspect.

[0018] The beneficial effects of the above-mentioned embodiments of the utility model are as follows:

[0019] The herringbone rear arch baffle structure for the fluidized bed provided by the utility model forms an angle through the first baffle and the second baffle, so that the baffle and the furnace wall form a relatively closed small space, the steam and the fluidized gas flow out of the space in the opposite direction in the small space, the bed material flows into the discharging port in the rear direction, the full mixing of the steam and the material is ensured, the bed material is prevented from flying up to the furnace outlet directly along the airflow, the loss of fine particle bed material is reduced, the utilization rate of activated steam is improved, and the particles are controlled to be concentrated in a local area, the problems of the traditional fluidized bed in the distribution of activated steam and the accumulation management of particles are effectively solved, an economic and environment-friendly solution is provided, and the utility model is suitable for the powder processing industry such as activated carbon production.

[0020] The herringbone rear arch baffle structure for the fluidized bed is provided by the utility model, which is composed of a herringbone baffle body, a hinge and a V-shaped groove claw nail, aims to enhance the operation efficiency and environmental protection performance of the fluidized bed, and two metal plates are connected through the hinge and fixed by welding to form a baffle to provide necessary structural flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings constituting a part of the utility model illustrate the utility model further, and the schematic embodiments of the utility model and the description thereof are used for explaining the utility model and do not constitute improper limitation on the utility model.

[0022] Fig. 1 It is the front view of the herringbone rear arch baffle structure of the utility model installed in the fluidized bed.

[0023] Fig. 2 It is the side view of the herringbone rear arch baffle structure of the utility model installed in the fluidized bed.

[0024] The schematic view is only used for illustration;

[0025] Among them, 1, first baffle;2, second baffle;3, hinge;4, reinforcing rib;5, hearth wall;6, V-shaped groove claw nail. DETAILED DESCRIPTION

[0026] It should be pointed out that the following detailed description is exemplary and aims to provide further illustration of the utility model. Unless otherwise indicated, all technical and scientific terms used in the utility model have the same meaning as that generally understood by the ordinary skilled person in the technical field to which the utility model belongs.

[0027] Embodiment 1

[0028] In a typical embodiment of the utility model, as shown in Figs. 1-2 A herringbone rear arch baffle structure for a fluidized bed is provided, comprising a first baffle 1 and a second baffle 2;The first baffle 1 and the second baffle 2 are inclinedly arranged, and the top of the first baffle 1 and the second baffle 2 is connected through a plurality of hinges 3, so that the first baffle 1 and the second baffle 2 form a herringbone structure, and the bottom of the first baffle 1 and the second baffle 2 is fixed on the hearth wall of the fluidized bed through a plurality of V-shaped groove claw nails 6 respectively.

[0029] In the embodiment, the included angle between the first baffle 1 and the second baffle 2 is 70-80°, preferably, the included angle between the first baffle 1 and the second baffle 2 is 76°, which can reduce the use of materials and provide sufficient ash flow angle. By forming an included angle between the first baffle and the second baffle, the gas flow dynamics in the fluidized bed can be optimized, the steam flow is more parallel to the bed surface, the contact area and time of the gas and the solid particles are increased, and the heat exchange efficiency is improved.

[0030] In the embodiment, the fluidized bed has a rectangular structure, a feeding port is arranged on the front end face of the fluidized bed, a discharging port is arranged on the rear end face, stepped faces are arranged on the left and right opposite two side faces of the fluidized bed, and the bottom of the first baffle 1 and the second baffle 2 is fixed on the stepped face. The top of the first baffle 1 and the second baffle 2 is spaced apart from the top of the fluidized bed by a certain distance, and the front end face and the rear end face of the first baffle 1 and the second baffle 2 are spaced apart from the inner wall face of the fluidized bed by a certain distance to leave a discharging space for the waste gas.

[0031] In the embodiment, the plurality of hinges 3 are uniformly distributed along the length direction of the baffle. By arranging the hinges 3, the included angle between the first baffle 1 and the second baffle 2 can be adjusted when the high-temperature expansion, the design of the hinge not only ensures the convenient installation of the baffle, but also ensures the free expansion in the continuous long-time operation. In a specific embodiment of the embodiment, the hinges are arranged along the length of the baffle at an interval of 0.5 m.

[0032] In the embodiment, the hinge 3 includes a hinge head, a connecting shaft and a base connected in sequence, the hinge head is fixed on the first baffle, and the base is fixed on the second baffle. The hinge can also adopt other existing structures. The two baffles are connected by a plurality of hinges, the hinges are arranged along the baffle at an interval of 0.5 m, and are fixed with the baffle by welding, so as to ensure the stability and reliability of the baffle in the high-temperature and high-pressure environment.

[0033] In the embodiment, the first baffle 1 and the second baffle 2 are made of high-temperature corrosion-resistant metal plates, a plurality of reinforcing ribs 4 are arranged on the first baffle 1 and the second baffle 2, the plurality of reinforcing ribs are uniformly distributed along the length direction of the baffle, and the reinforcing ribs are arranged on the lower surface of the baffle.

[0034] In a specific embodiment of the embodiment, the first baffle 1 and the second baffle 2 are made of high-temperature corrosion-resistant metal plates with a size of 1.2 m×2.5 m; each baffle is fixed by welding five reinforcing bars with a size of 0.03 m×1 m at an interval of 0.5 m, and the reinforcing bars increase the structural stability and bending and compression resistance of the baffle.

[0035] In the embodiment, the V-shaped slot claw nail 6 is installed on the hearth wall 5 of the fluidized bed in a pre-installed manner, and is used for fixing two baffle plates. Through the pre-set hole position, the V-shaped slot claw nail 6 can stably anchor the baffle plate in the hearth 8 and is welded to prevent displacement caused by high temperature or mechanical vibration. The connection point of the baffle plate and the V-shaped slot claw nail 6 is provided with a square hole, which allows fly ash to pass smoothly, reduces blockage and optimizes the recycling of dust.

[0036] In the embodiment, the V-shaped slot claw nail is installed on the hearth wall of the fluidized bed in a pre-installed manner, and is welded to the baffle plate. The V-shaped slot claw nail and the bottom of the baffle plate are further reinforced by spot welding, so that the baffle plate is more stably installed in the hearth.

[0037] The working principle of the herringbone rear arch baffle plate structure for the fluidized bed provided in the embodiment is as follows: through the first baffle plate and the second baffle plate forming an included angle, a relatively closed small space is formed between the rear arch and the hearth wall. Steam and fluidizing gas flow out of the small space in the opposite direction, and the bed material flows into the discharge port, which ensures the full mixing of steam and material. At the same time, the direction of the bed material flow is guided, so that the bed material is not directly flown upward along the gas flow to the hearth outlet, and the loss of fine particle bed material is reduced.

[0038] The herringbone rear arch baffle plate structure can significantly improve the operation efficiency and maintenance convenience of the fluidized bed, and is particularly suitable for industrial applications that require efficient heat exchange and dust control.

[0039] Embodiment 2

[0040] In a typical embodiment of the present application, a fluidized bed is provided, which comprises the herringbone rear arch baffle plate structure of embodiment 1.

[0041] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A chevron back arch dam structure for a fluidized bed, characterized by, The first baffle and the second baffle are arranged obliquely, and the top of the first baffle and the second baffle is connected by a plurality of hinges, so that the first baffle and the second baffle are in a herringbone structure, and the bottom of the first baffle and the second baffle is fixed on the hearth wall of the fluidized bed by a plurality of V-shaped slot nails.

2. The herringbone back arch dam structure for a fluidized bed as set forth in claim 1, characterized by, The included angle between the first baffle and the second baffle is 70-80°.

3. The herringbone back arch dam structure for a fluidized bed as claimed in claim 1, wherein The fluidized bed is in a rectangular structure, the front end surface of the fluidized bed is provided with a feeding port, the rear end surface is provided with a discharging port, and the left and right opposite two side surfaces of the fluidized bed are provided with stepped surfaces, and the bottom of the first baffle and the second baffle is fixed on the stepped surfaces.

4. The herringbone back arch dam structure for a fluidized bed as claimed in claim 1, wherein The top of the first baffle and the second baffle is separated from the top of the fluidized bed by a certain distance, and the front end surface and the rear end surface of the first baffle and the second baffle is separated from the inner wall surface of the fluidized bed by a certain distance.

5. The herringbone back arch dam structure for a fluidized bed as claimed in claim 1, wherein The plurality of hinges are uniformly distributed along the length direction of the baffle.

6. The herringbone back arch dam structure for a fluidized bed as claimed in claim 1, wherein The first baffle and the second baffle are both provided with a plurality of reinforcing ribs, the plurality of reinforcing ribs are uniformly distributed along the length direction of the baffle, and the reinforcing ribs are arranged on the lower surface of the baffle.

7. The herringbone back arch dam structure for a fluidized bed as claimed in claim 1, wherein The first baffle and the second baffle are both made of high-temperature corrosion-resistant metal plates.

8. The herringbone back arch dam structure for a fluidized bed as claimed in claim 1, wherein The hinge comprises a hinge head, a connecting shaft and a base connected in sequence, the hinge head is fixed on the first baffle, and the base is fixed on the second baffle.

9. The herringbone back arch dam structure for a fluidized bed as claimed in claim 1, wherein The V-shaped slot nail is installed on the hearth wall of the fluidized bed in a pre-installation manner, and the V-shaped slot nail is welded with the baffle.

10. A fluidized bed characterized in that, The herringbone rear arch baffle structure comprises the herringbone rear arch baffle structure according to any one of claims 1-9.

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