Horizontal waste heat boiler ash discharge system with cyclone separator

Abstract

The utility model provides a horizontal waste heat boiler ash discharge system with a cyclone separator, which belongs to the technical field of waste heat boiler ash discharge and comprises a mounting frame, a centrifugal separation mechanism arranged at the top of the mounting frame and used for separating large-particle ash and a secondary ash hopper fixedly mounted in the mounting frame and used for temporarily storing the ash, the discharge pipe is communicated with the bottom of the secondary ash hopper; a discharge valve is arranged on the surface of the discharge pipe; the centrifugal separation mechanism comprises a cyclone separator, the input end of the cyclone separator is communicated with a tangential ash inlet pipe, a center pipe is arranged at the top of the cyclone separator, and a pneumatic gate valve and a star-shaped ash discharging valve are arranged at an outlet of the cyclone separator. Large-particle ash is discharged into the secondary ash bucket through the cyclone separator, so that the large-particle ash is prevented from entering a subsequent fan along with flue gas, blade abrasion is avoided, and the service life of the fan is shortened; and the second-stage ash bucket is used for recovering and utilizing large-particle ash residues, so that the utilization rate of the ash residues is increased.

Description

Technical Field

[0001] This utility model belongs to the field of waste heat boiler ash removal technology, specifically relating to a horizontal waste heat boiler ash removal system with a cyclone separator. Background Technology

[0002] A horizontal waste heat boiler is a horizontally arranged waste heat recovery device that utilizes high-temperature waste gas and waste liquid emitted during industrial production, converting heat energy into steam or hot water through heat exchange. Its core structure includes a boiler drum, heat exchange tube bundle, and flue, and it adopts a horizontal layout to adapt to site constraints or process requirements. Compared to vertical boilers, the horizontal design offers advantages such as convenient installation, easy maintenance, and lower system resistance. It is widely used in industries such as metallurgy, chemicals, and building materials, effectively improving energy utilization, reducing energy consumption and emissions, and achieving energy conservation and environmental protection goals.

[0003] The existing ash hopper discharge device of the horizontal waste heat boiler directly transports ash and slag to the boiler outlet flue, causing large particles of ash and slag to enter the subsequent fan with the flue gas, resulting in blade wear and reduced equipment life. Utility Model Content

[0004] The purpose of this invention is to provide a horizontal waste heat boiler ash removal system with a cyclone separator, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A horizontal waste heat boiler ash removal system with a cyclone separator includes a mounting frame, a centrifugal separation mechanism for separating large ash particles is provided on the top of the mounting frame, a secondary ash hopper for temporary storage of ash particles is fixedly installed inside the mounting frame, and a discharge pipe is connected to the bottom of the secondary ash hopper. The surface of the discharge pipe is provided with a discharge valve.

[0007] The centrifugal separation mechanism includes a cyclone separator, the input end of which is connected to a tangential ash inlet pipe, the top of which is provided with a central pipe, and the outlet of which is provided with a pneumatic slide valve and a star-shaped ash discharge valve.

[0008] The air inlet of the tangential ash inlet pipe is equipped with a quick-connection mechanism.

[0009] As a preferred embodiment of the present invention, the connecting mechanism includes a connecting sleeve connected to the end of the tangential ash inlet pipe, a connecting pipe fixedly installed inside the connecting sleeve and connected to the outlet of the ash conveying device, a plurality of first magnetic blocks embedded inside the connecting sleeve, and a second magnetic block embedded at the end of the connecting pipe and used in conjunction with the first magnetic blocks.

[0010] As a preferred embodiment of this utility model, a sealing ring for increasing the sealing performance is fitted on the outer surface of the connecting pipe.

[0011] In a preferred embodiment of this utility model, a threaded sleeve is rotatably mounted on the surface of the connecting pipe, and the threaded sleeve is threadedly connected to the connecting sleeve.

[0012] As a preferred embodiment of this utility model, the inner wall of the cyclone separator is coated with a silicon carbide wear-resistant layer, and the thickness of the wear-resistant layer is eight millimeters.

[0013] As a preferred embodiment of this utility model, the surface of the secondary ash hopper is connected to a differential pressure balancing pipe, and the other end of the differential pressure balancing pipe is connected to the boiler flue. The differential pressure balancing pipe is used to maintain the system's negative pressure stability.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the cyclone separator is used to discharge large particles of ash into the interior of the secondary ash hopper, preventing large particles of ash from entering the subsequent fan with the flue gas, causing blade wear and reducing the service life of the fan; the secondary ash hopper is used to recycle and utilize large particles of ash, improving the utilization rate of ash. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the centrifugal separation mechanism of this utility model;

[0018] Figure 3 This is a top view of the structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection mechanism of this utility model.

[0020] In the diagram: 110, mounting bracket; 120, centrifugal separation mechanism; 121, cyclone separator; 122, tangential ash inlet pipe; 123, central pipe; 124, pneumatic slide gate valve; 125, rotary valve; 130, secondary ash hopper; 140, discharge pipe; 150, unloading valve; 160, connecting mechanism; 161, connecting sleeve; 162, connecting pipe; 163, first magnetic block; 164, second magnetic block; 165, sealing ring; 166, threaded sleeve. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example

[0025] Reference Figure 1-4 This is an embodiment of the present invention. This embodiment provides a horizontal waste heat boiler ash discharge system with a cyclone separator, including a mounting frame 110, a centrifugal separation mechanism 120 for separating large ash particles is provided on the top of the mounting frame 110, a secondary ash hopper 130 is fixedly installed inside the mounting frame 110 for temporary storage of ash, a discharge pipe 140 is connected to the bottom of the secondary ash hopper 130, and a discharge valve 150 is provided on the surface of the discharge pipe 140.

[0026] The centrifugal separation mechanism 120 includes a cyclone separator 121, the input end of which is connected to a tangential ash inlet pipe 122, the top of which is provided with a central pipe 123, and the outlet of which is provided with a pneumatic slide valve 124 and a star-shaped ash discharge valve 125.

[0027] The air inlet of the tangential ash inlet pipe 122 is equipped with a quick-connection mechanism 160.

[0028] The cyclone separator 121 is used to discharge large ash particles into the secondary ash hopper 130 to prevent them from entering the subsequent fan with the flue gas, causing blade wear and reducing the fan's service life. The secondary ash hopper 130 is used to recycle and utilize large ash particles, improving the utilization rate of ash. The central pipe 123 is used for the fine ash outlet. The cooperation between the pneumatic slide valve 124 and the star-shaped ash discharge valve 125 can realize continuous ash discharge.

[0029] Specifically, the connecting mechanism 160 includes a connecting sleeve 161 connected to the end of the tangential ash inlet pipe 122, a connecting pipe 162 fixedly installed inside the connecting sleeve 161 and connected to the outlet of the ash conveying device, a plurality of first magnetic blocks 163 embedded inside the connecting sleeve 161, and a second magnetic block 164 embedded at the end of the connecting pipe 162 and used in conjunction with the first magnetic blocks 163.

[0030] The first magnetic block 163 and the second magnetic block 164 cooperate to magnetically attract the connecting pipe 162 inside the connecting sleeve 161, which facilitates the quick connection between the outlet of the ash conveying device and the tangential ash inlet pipe 122.

[0031] Furthermore, a sealing ring 165 is fitted on the outer surface of the connecting pipe 162 to increase the sealing performance.

[0032] The sealing ring 165 is used to increase the sealing of the connecting pipe 162 when it is inserted into the connecting sleeve 161, so as to prevent dust from leaking out.

[0033] Preferably, a threaded sleeve 166 is rotatably mounted on the surface of the connecting pipe 162, and the threaded sleeve 166 is threadedly connected to the connecting sleeve 161.

[0034] The threaded sleeve 166 is used to enhance the stability of the end of the connecting pipe 162 installed inside the connecting sleeve 161, and to prevent the connecting pipe 162 from falling off.

[0035] Furthermore, the inner wall of the cyclone separator 121 is coated with a silicon carbide wear-resistant layer, and the thickness of the wear-resistant layer is eight millimeters.

[0036] Among them, the silicon carbide wear-resistant layer is used to improve the wear resistance of the inner wall of the cyclone separator 121, so as to avoid large particles of ash and slag from scratching and damaging the inner wall of the cyclone separator 121.

[0037] Furthermore, the surface of the secondary ash hopper 130 is connected to a differential pressure balancing pipe, and the other end of the differential pressure balancing pipe is connected to the boiler flue. The differential pressure balancing pipe is used to maintain the stability of the negative pressure of the system.

[0038] During use, after ash accumulates in the boiler ash hopper, the ash is pressurized and transported by the ash conveying device, and enters the cyclone separator 121 through the connecting pipe 162 and the tangential ash inlet pipe 122. Large ash particles rotate and fall down along the wall of the cyclone separator 121 into the interior of the secondary ash hopper 130. The ash inside the secondary ash hopper 130 is periodically discharged and packaged, while fine ash is returned to the boiler flue through the central pipe 123.

[0039] In summary, the cyclone separator 121 is used to discharge large particles of ash into the secondary ash hopper 130 to prevent them from entering the subsequent fan with the flue gas, causing blade wear and reducing the fan's service life. The secondary ash hopper 130 is used to recycle and utilize large particles of ash, improving the utilization rate of ash.

[0040] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0041] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0042] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A horizontal waste heat boiler ash removal system with a cyclone separator, comprising a mounting frame (110), characterized in that: The top of the mounting frame (110) is provided with a centrifugal separation mechanism (120) for separating large particles of ash and slag, a secondary ash hopper (130) is fixedly installed inside the mounting frame (110) for temporary storage of ash and slag, and a discharge pipe (140) is connected to the bottom of the secondary ash hopper (130). The surface of the discharge pipe (140) is provided with a discharge valve (150). The centrifugal separation mechanism (120) includes a cyclone separator (121), the input end of which is connected to a tangential ash inlet pipe (122), the top of which is provided with a central pipe (123), and the outlet of which is provided with a pneumatic slide valve (124) and a star-shaped ash discharge valve (125). The air inlet of the tangential ash inlet pipe (122) is provided with a quick-connection connection mechanism (160).

2. The ash removal system for a horizontal waste heat boiler with a cyclone separator according to claim 1, characterized in that: The connecting mechanism (160) includes a connecting sleeve (161) connected to the end of the tangential ash inlet pipe (122), a connecting pipe (162) fixedly installed inside the connecting sleeve (161) and connected to the outlet of the ash conveying device, a plurality of first magnetic blocks (163) embedded inside the connecting sleeve (161), and a second magnetic block (164) embedded at the end of the connecting pipe (162) and used in conjunction with the first magnetic blocks (163).

3. The ash removal system for a horizontal waste heat boiler with a cyclone separator according to claim 2, characterized in that: The outer surface of the connecting pipe (162) is fitted with a sealing ring (165) to increase the sealing performance.

4. The ash removal system for a horizontal waste heat boiler with a cyclone separator according to claim 3, characterized in that: A threaded sleeve (166) is rotatably mounted on the surface of the connecting pipe (162), and the threaded sleeve (166) is threadedly connected to the connecting sleeve (161).

5. The ash removal system for a horizontal waste heat boiler with a cyclone separator according to claim 4, characterized in that: The inner wall of the cyclone separator (121) is coated with a silicon carbide wear-resistant layer, and the thickness of the wear-resistant layer is eight millimeters.

6. The ash removal system for a horizontal waste heat boiler with a cyclone separator according to claim 5, characterized in that: The surface of the secondary ash hopper (130) is connected to a differential pressure balancing pipe, and the other end of the differential pressure balancing pipe is connected to the boiler flue. The differential pressure balancing pipe is used to maintain the system's negative pressure stability.

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