Boiler bed material feeding system

Abstract

According to the boiler bed material feeding system, slag materials are fed into the boiler from the manhole through the bucket elevator, so that the slag materials are accumulated in the boiler, the slag materials are blown away through the air distribution assembly, the slag materials are blown away under the action of the air distribution assembly, and finally the slag materials are evenly distributed in a hearth to form a bed layer. According to the boiler bed material feeding system, the technical problems that in the prior art, workers need to enter a boiler to flatten bed materials, operation is inconvenient, and potential safety hazards are likely to be caused are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler feeding, and in particular relates to a boiler bed material feeding system. Background Art

[0002] Boilers, as a common piece of equipment in the chemical industry, play a vital role in providing heat, driving equipment, participating in chemical reactions, ensuring environmental protection and energy conservation, and ensuring safety and reliability. Bed material plays a crucial role in boiler operation. Bed material generally refers to solid particles of a certain thickness and size that are laid inside the boiler before ignition and startup. These particles perform multiple functions during boiler operation, including support, heat transfer, fluidization, and participation in combustion or chemical reactions.

[0003] In existing boilers, bed material is typically delivered into the boiler by manual handling or a feeder, and then manually leveled to form a bed layer. This requires workers to enter the boiler to level the bed material, which is inconvenient and unsafe. Utility Model Content

[0004] In order to solve the technical problem in the background technology that when adding bed material into the boiler, workers need to enter the boiler to level the bed material, which is inconvenient and unsafe to operate, the utility model provides a boiler bed material feeding system.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A boiler bed material feeding system is used for a boiler, wherein a manhole is provided on the boiler, and the boiler bed material feeding system comprises a bucket elevator and an air distribution assembly; the air distribution assembly is arranged inside the boiler and is lower than the manhole; the bucket elevator is connected to the boiler through the manhole; the bucket elevator is used to feed slag into the boiler through the manhole; the air distribution assembly is used to blow air on the slag in the boiler so that the slag is flattened in the boiler to form a bed layer.

[0007] Optionally, the air distribution assembly includes an air distribution plate and a plurality of wind hoods arranged on the air distribution plate; the air distribution plate is arranged at the bottom of the boiler; the boiler bed material feeding system also includes a fan; the fan is arranged outside the boiler and connected to the wind hoods.

[0008] Optionally, the hood is a mushroom-shaped hood or a bell-shaped hood.

[0009] Optionally, a plurality of the hoods are evenly distributed on the air distribution plate.

[0010] Optionally, the fan is a primary fan.

[0011] Optionally, the boiler bed material feeding system also includes a slag bin, a first unloading channel and a second unloading channel; the slag bin is used to store the slag, and a discharge port is provided on the slag bin; the first unloading channel is connected to the slag bin and the lower end of the bucket elevator through the discharge port; the second unloading channel is connected to the upper end of the bucket elevator and the manhole.

[0012] Optionally, the boiler bed material feeding system further includes a material pit, and the bucket elevator is arranged in the material pit.

[0013] Optionally, a vibrating screen is provided in the material pit, and the vibrating screen is connected to the bucket elevator to allow the slag material to enter the bucket elevator.

[0014] Optionally, the angles between the first material discharge channel and the second material discharge channel and the horizontal plane are both 45° to 60°.

[0015] Optionally, a first discharge valve is provided on the first discharge channel; a second discharge valve is provided on the second discharge channel.

[0016] The utility model provides a boiler bed material feeding system, which uses a bucket elevator to feed slag into the boiler from a manhole, so that the slag is accumulated in the boiler, and an air distribution component is used to blow the slag so that the slag is blown away by the air distribution component and finally evenly distributed inside the furnace to form a bed layer.

[0017] The beneficial effects of the utility model are:

[0018] (1) The boiler bed material feeding system of the present invention delivers slag material into the boiler through a bucket elevator and flattens the slag material by blowing air through an air distribution assembly, thereby solving the technical problem in the prior art that workers need to enter the boiler to flatten the bed material, which is inconvenient to operate and easily leads to safety hazards.

[0019] (2) The boiler bed material feeding system of the present invention feeds slag into the boiler through a manhole on the boiler, eliminating the need for a special feeding hole on the side wall of the boiler, thereby ensuring the structural strength of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the boiler bed material feeding system in the utility model;

[0021] Figure 2 It is a schematic diagram of a further optimized boiler bed material feeding system in the present utility model.

[0022] Among them: 1. Boiler; 11. Manhole; 2. Bucket elevator; 3. Air distribution assembly; 31. Air distribution plate; 32. Air hood; 4. Fan; 5. Slag bin; 6. First discharge channel; 61. First discharge valve; 7. Second discharge channel; 71. Second discharge valve; 8. Material pit; 9. Induced draft assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0026] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] See also Figure 1 , shows a schematic diagram of a boiler bed material feeding system described in the present application, which is used for a boiler 1, and a manhole 11 is provided on the boiler 1; the boiler bed material feeding system includes a bucket elevator 2 and an air distribution component 3; the air distribution component 3 is arranged inside the boiler 1 and is lower than the manhole 11; the bucket elevator 2 is connected to the interior of the boiler 1 through the manhole 11; the bucket elevator 2 delivers slag into the furnace of the boiler 1 through the manhole 11; the air distribution component 3 blows air on the slag delivered into the boiler 1 to flatten the slag inside the boiler 1 and finally form a bed layer.

[0031] In this embodiment, slag is fed into the furnace of boiler 1 via bucket elevator 2. The slag that enters boiler 1 naturally accumulates within boiler 1. Air distribution assembly 3 blows air onto the accumulated slag, evenly leveling it and forming a bed. During the bed addition process, workers do not need to enter boiler 1 to level the slag, thus avoiding operational inconvenience and potential safety hazards.

[0032] Furthermore, the boiler 1 described in this embodiment may be provided with an induced draft assembly 9, which creates a negative pressure environment within the furnace of the boiler 1, thereby preventing the slag from being blown out of the boiler 1 when the air distribution assembly 3 blows air on the slag. Specifically, the induced draft assembly 9 may be connected to a chimney via an induced draft fan to discharge the slag and ash sucked in during the induced draft process.

[0033] For example, the slag material can be slag with a carbon content of less than 3% and a particle size of 0mm to 5mm. Specifically, the hot bed material from the adjacent furnace can be used as the slag material. During use, the induced draft assembly maintains a negative pressure of 0kPa to -50kPa in the furnace, and the air distribution assembly is used to evenly distribute the slag material within the boiler 1, ultimately forming a bed layer thickness ≥800mm.

[0034] It should be noted that those skilled in the art can select the type of slag and the thickness of the final bed layer according to actual production and use requirements. This embodiment only provides an example.

[0035] Preferably, the diameter of the manhole 11 described in this embodiment should be greater than or equal to 550 mm.

[0036] Optionally, refer to Figure 2 The air distribution assembly 3 described in the present invention includes an air distribution plate 31 and a plurality of air hoods 32 arranged on the air distribution plate 31; the air distribution plate 31 is arranged at the bottom of the boiler 1; and the boiler bed material feeding system also includes a fan 4, which should be arranged outside the boiler 1 and connected to the ventilation hoods 32.

[0037] In this embodiment, the air distribution assembly 3 includes an air distribution plate 31 and multiple air hoods 32. During use, the air distribution plate 31 is set at the bottom of the boiler 1. After the slag enters the boiler 1 through the manhole 11, it accumulates on the air distribution plate 31. The slag is blown by the fan 4 and the air hood 32, so that the slag is flattened to form a bed layer.

[0038] Optionally, the hood 32 described in the present invention is any one of a mushroom-type hood and a bell-type hood, or can be a combination of a mushroom-type hood and a bell-type hood.

[0039] In this embodiment, the hood 32 can be a mushroom-shaped hood or a bell-shaped hood. The mushroom-shaped hood has better air distribution uniformity, allowing air to form a relatively uniform flow field when passing through the hood, thereby achieving more effective flattening of the slag. The bell-shaped hood is generally designed with a bell-shaped structure, thereby achieving even airflow distribution and providing good stability during the blowing and flattening process of the slag.

[0040] Furthermore, a bed pressure detection device can be provided to detect the bed pressure of the bed layer and realize the detection of the bed leveling result; based on the detection of the bed pressure, the leveling effect of the bed layer is obtained, and based on the leveling effect of the bed layer, the air volume or wind direction of the wind cap 32 is adjusted to obtain the target bed layer.

[0041] Optionally, the multiple hoods 32 described in the present invention are evenly distributed on the air distribution plate 31 .

[0042] In this embodiment, a plurality of wind caps 32 are evenly distributed on the air distribution plate 31, thereby ensuring that the slag is subjected to a balanced wind force during the blowing process.

[0043] Furthermore, multiple hoods 32 can be arranged in an array or in a multi-layer ring arrangement, and those skilled in the art can adjust the type and size of the hoods 32 in the array according to usage requirements, which is not specifically limited in this embodiment.

[0044] Optionally, the fan 4 described in the present invention is a primary fan.

[0045] In this embodiment, the fan 4 can be selected as a primary fan. Since the primary fan has the characteristics of high efficiency, high reliability and easy maintenance, it is used in the boiler bed material feeding system to have a better effect on blowing and leveling the slag.

[0046] Optionally, refer to Figure 1 The boiler bed material feeding system described in the present invention also includes a slag bin 5, a first feeding channel 6 and a second feeding channel 7; the slag bin 5 is used to store slag, and a discharge port is opened on the slag bin 5; the first feeding channel 6 is connected to the slag bin 5 and the lower end of the bucket elevator 2 through the discharge port; the second feeding channel 7 is connected to the upper end of the bucket elevator 2 and the manhole 11.

[0047] In this embodiment, the boiler bed material feeding system also includes a slag bin 5, a first discharge channel 6 and a second discharge channel 7. During use, the slag is stored and transported through the slag bin 5, and the slag enters the bucket elevator 2 through the first discharge channel 6. After the bucket elevator 2 lifts the slag, it is transported into the manhole 11 through the second discharge channel 7.

[0048] Furthermore, the first and second material discharge channels 6 and 7 can be specifically selected as pipes with a diameter of not less than 200 mm to ensure smooth passage of the slag. It should be noted that those skilled in the art can specifically select the diameter and material of the first and second material discharge channels 6 and 7 according to actual production and use requirements, and this embodiment does not impose any further restrictions.

[0049] Furthermore, the discharge port may be provided on the side wall or the bottom of the slag bin 5 .

[0050] Optionally, refer to Figure 1 The boiler bed material feeding system described in the present invention further includes a material pit 8, and the bucket elevator 2 is arranged in the material pit 8.

[0051] In this embodiment, the bucket elevator 2 is arranged in the material pit 8. During use, the slag can first enter the material pit 8 through the first discharge channel 6 for storage. The slag is stored in the material pit 8, thereby ensuring that the bucket elevator 2 can operate stably during the loading process, avoiding the slow discharge rate of the slag bin 5 causing the bucket elevator 2 to idle, affecting the stability of the equipment operation.

[0052] Furthermore, a roof may be provided on the material pit 8 to prevent rain, wind and sand from affecting the slag in the material pit 8 .

[0053] Optionally, a vibrating screen is provided in the material pit 8 described in the present invention, and the vibrating screen is connected to the bucket elevator 2 to allow the slag material to enter the bucket elevator 2.

[0054] In this embodiment, a vibrating screen is set in the material pit 8, the slag is screened by the vibrating screen, and the screened slag enters the bucket elevator 2, and the loading is completed through the bucket elevator 2 and the second discharge channel 7, which improves the loading efficiency, removes impurities, and ensures the quality of the slag.

[0055] Optionally, the angles between the first material discharge channel 6 and the second material discharge channel 7 described in the present invention and the horizontal plane are both 45° to 60°.

[0056] In this embodiment, the angles between the first and second feeding channels 6 and 7 and the horizontal plane are both 45° to 60°, thereby ensuring smooth feeding of slag in the first and second feeding channels 6 and 7. Specifically, the angles between the first and second feeding channels 6 and 7 and the horizontal plane can be 45°, 50°, or 60°. It should be noted that those skilled in the art can select the angles between the first and second feeding channels 6 and 7 and the horizontal plane according to actual production and use requirements. This embodiment only provides a preferred implementation scheme.

[0057] Optionally, the first discharge channel 6 described in the present invention is provided with a first discharge valve 61 , and the second discharge channel 7 is provided with a second discharge valve 71 .

[0058] In this embodiment, a first discharge valve 61 is provided on the first discharge channel 6 , and a second discharge valve 71 is provided on the second discharge channel 7 , so as to control the discharge rates of the first discharge channel 6 and the second discharge channel 7 .

[0059] Specifically, the first discharge valve 61 and the second discharge valve 71 can both be electrically controlled valves. It should be noted that those skilled in the art can select the installation position and model of the first discharge valve 61 and the second discharge valve 71 according to actual production and use requirements, and this embodiment does not limit them.

[0060] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0061] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A boiler bed material feeding system, used for a boiler (1), wherein a manhole (11) is provided on the boiler (1), characterized in that: It includes a bucket elevator (2) and an air distribution component (3); The air distribution assembly (3) is arranged inside the boiler (1) and is arranged below the manhole (11); The bucket elevator (2) is connected to the boiler (1) through the manhole (11); the bucket elevator (2) is used to deliver slag into the boiler (1) through the manhole (11); The air distribution assembly (3) is used to blow air to the slag material in the boiler (1), so that the slag material is flattened in the boiler (1) to form a bed layer.

2. The boiler bed material feeding system according to claim 1, characterized in that: The air distribution assembly (3) comprises an air distribution plate (31) and a plurality of air hoods (32) arranged on the air distribution plate (31); The air distribution plate (31) is arranged at the bottom of the boiler (1); The boiler bed material feeding system further comprises a fan (4); the fan (4) is arranged outside the boiler (1) and is connected to the wind cap (32).

3. The boiler bed material feeding system according to claim 2, characterized in that: The hood (32) is any one of a mushroom-shaped hood and a bell-shaped hood.

4. The boiler bed material feeding system according to claim 3, characterized in that: The plurality of wind caps (32) are evenly distributed on the wind distribution plate (31).

5. The boiler bed material feeding system according to claim 2, characterized in that: The fan (4) is a primary fan.

6. The boiler bed material feeding system according to claim 1, characterized in that: The boiler bed material feeding system further comprises a slag bin (5), a first feeding channel (6) and a second feeding channel (7); The slag bin (5) is used to store the slag material, and a discharge port is provided on the slag bin (5); The first discharge channel (6) is connected to the slag bin (5) and the lower end of the bucket elevator (2) through the discharge port; The second material discharge channel (7) is connected to the upper end of the bucket elevator (2) and the manhole (11).

7. The boiler bed material feeding system according to claim 6, characterized in that: The boiler bed material feeding system further comprises a material pit (8), and the bucket elevator (2) is arranged in the material pit (8).

8. The boiler bed material feeding system according to claim 7, characterized in that: A vibrating screen is provided in the material pit (8), and the vibrating screen is in communication with the bucket elevator (2) for allowing the slag material to enter the bucket elevator (2).

9. The boiler bed material feeding system according to claim 6, characterized in that: The angles between the first material discharge channel (6) and the second material discharge channel (7) and the horizontal plane are both 45° to 60°.

10. The boiler bed material feeding system according to claim 6, characterized in that: The first discharge channel (6) is provided with a first discharge valve (61); the second discharge channel (7) is provided with a second discharge valve (71).

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