Cleaning device for deposited coal cinder of boiler
By installing air ducts and baffles in the boiler, cold air is used to break up the coal slag at the bottom of the furnace and flue, solving the problem of low efficiency in traditional manual cleaning and achieving efficient cleaning and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LINYI SHUANGDING THERMAL POWER CO LTD
- Filing Date
- 2025-03-07
- Publication Date
- 2026-05-05
AI Technical Summary
Incomplete combustion of pulverized coal in traditional boilers leads to the accumulation of coal slag at the bottom of the furnace and flue, affecting boiler operating efficiency and safety. Furthermore, manual cleaning is inefficient and costly.
An air duct is installed at the bottom of the furnace and flue. The alternating hot and cold action of cold air and high-temperature coal slag is utilized. Cold air is sprayed through the exhaust port to break up the coal slag. The heat is isolated by baffles. The cleaning effect is optimized by combining heat exchange tubes and water supply pipes.
It enables efficient cleaning of coal slag at the bottom of the furnace and flue, reduces equipment downtime, lowers maintenance costs, and improves boiler operation safety and efficiency.
Smart Images
Figure CN224201722U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of boiler slag cleaning technology, for example to a boiler slag cleaning device. Background Technology
[0002] In traditional boiler operation, the combustion of pulverized coal in the furnace produces a large amount of flue gas and pulverized coal particles. These particles are discharged from the boiler by the flue gas, but because some pulverized coal is not fully burned, it cannot be completely carried away by the flue gas and will deposit at the bottom of the furnace and flue, forming slag accumulation. Over time, the slag accumulation gradually increases, reducing the flow area of the furnace and flue, and may even cause complete blockage, seriously affecting the normal operation and thermal efficiency of the boiler. In addition, slag accumulation also increases the boiler's maintenance costs and cleaning difficulty, and may even cause safety hazards.
[0003] Traditional methods for cleaning up deposited coal slag usually require manual cleaning after the furnace is shut down. This method is not only inefficient, but also increases equipment downtime and maintenance costs. Utility Model Content
[0004] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.
[0005] This disclosure provides a boiler slag cleaning device to solve the problem of coal dust depositing at the bottom of the furnace and being unable to be discharged.
[0006] In some embodiments, the boiler slag cleaning device includes: a furnace body having a furnace chamber inside; a flue located on one side of the furnace chamber inside the furnace body, with the bottom of the furnace chamber communicating with the bottom of the flue; and an air duct arranged in parallel at the bottom of the furnace chamber, with an exhaust port located at the top of the air duct.
[0007] In some embodiments, a baffle is provided at the bottom of the furnace and the flue, the gas passage is located at the lower part of the baffle, and the upper part of the exhaust port passes through the upper part of the baffle.
[0008] In some embodiments, the air passage is further provided with an exhaust pipe that extends to the upper part of the partition and has an air outlet that sprays air toward the upper part of the partition.
[0009] In some embodiments, an exhaust hood is provided above the exhaust port on the upper part of the exhaust pipe.
[0010] In some embodiments, heat exchange tubes are arranged side by side on the inner sidewall of the furnace, a first drain pipe is provided at the upper end of the heat exchange tubes, and a water inlet pipe is provided at the lower part of the heat exchange tubes.
[0011] In some embodiments, the lower end of the heat exchange tube passes through the partition, and the water inlet pipe is disposed at the lower part of the partition.
[0012] In some embodiments, a water supply pipe is provided inside the airway, and a second drain pipe is provided on the water supply pipe, the second drain pipe extending into the exhaust port.
[0013] In some embodiments, the second drain pipe extends into the exhaust pipe and is disposed at the lower part of the exhaust hood.
[0014] In some embodiments, the exhaust hood is a hollow conical structure, and the bottom of the exhaust hood is fitted onto the air outlet.
[0015] In some embodiments, a smoke exhaust port is provided at the upper part of the flue.
[0016] The boiler slag cleaning device provided in this embodiment can achieve the following technical effects:
[0017] By setting up air ducts at the bottom of the furnace and the bottom of the flue, and utilizing the alternating hot and cold action of cold air and high-temperature coal slag, the coal slag is broken up and blown up and crushed, thereby achieving efficient cleaning.
[0018] By isolating the air duct from the furnace and flue through baffles, the cold air is kept at a low temperature, further optimizing the crushing effect of the coal slag. The exhaust hood design allows for precise control of the cold air flow direction, concentrating the cold air on the coal slag and improving cleaning efficiency.
[0019] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description
[0020] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:
[0021] Figure 1 This is a schematic diagram of the boiler slag cleaning device provided in an embodiment of this disclosure;
[0022] Figure 2 This is a schematic cross-sectional view of the boiler slag cleaning device provided in this embodiment of the disclosure;
[0023] Figure 3This is a schematic diagram of the internal structure of the boiler slag cleaning device provided in this embodiment of the disclosure;
[0024] Figure 4 This is a bottom view of the internal structure of the boiler slag cleaning device provided in this embodiment of the disclosure;
[0025] Figure 5 This is a schematic diagram of the air passage, exhaust port, and baffle structure provided in the embodiments of this disclosure;
[0026] Figure 6 This is a schematic cross-sectional view of the air passage, exhaust port, and partition provided in the embodiments of this disclosure.
[0027] Figure label:
[0028] 100. Furnace body; 101. Furnace chamber; 200. Flue; 201. Flue outlet; 300. Gas duct; 301. Exhaust port; 302. Baffle plate; 303. Exhaust pipe; 304. Gas outlet; 305. Exhaust hood; 102. Heat exchange tube; 103. First drain pipe; 104. Water inlet pipe; 400. Water supply pipe; Detailed Implementation
[0029] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.
[0030] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.
[0031] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.
[0032] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.
[0033] Unless otherwise stated, the term "multiple" means two or more.
[0034] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.
[0035] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.
[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.
[0037] Combination Figure 1-6 As shown in the figure, this embodiment of the present disclosure provides a boiler slag cleaning device, including: a furnace body 100, in which a furnace chamber 101 is provided; a flue 200, which is provided on one side of the furnace chamber 101 in the furnace body 100, and the bottom of the furnace chamber 101 is connected to the bottom of the flue 200; and an air duct 300, which is arranged in parallel at the bottom of the furnace chamber 101, and an exhaust port 301 is provided on the upper part of the air duct 300.
[0038] The boiler slag cleaning device provided in this embodiment has a furnace 101 inside the furnace body 100. The furnace 101 has a vertical circular structure. Powdered coal is fed into the furnace 101 from the top and burns inside. The burned coal powder is lightweight. A flue 200 is located on one side of the furnace 101 and is connected to the bottom of the furnace 101. The flue gas generated in the furnace 101 can enter the flue 200 through the space between the bottom of the furnace 101 and the flue 200. When the flue gas enters the flue 200, it can transport the burned coal powder and soot out of the furnace body 100. However, some incompletely burned coal powder cannot enter the flue 200 through the flue gas and will fall into the bottom of the furnace 101 and the flue 200 to form slag deposits. Over time, this accumulation will cause slag to accumulate. Accumulation can easily cause blockages in the flue 200 and the furnace 101. The air duct 300, located at the bottom of the furnace 101 and the bottom of the flue 200, can supply cold air to the bottom of the furnace 101 and the bottom of the flue 200. The deposited coal slag at the bottom of the furnace 101 and the bottom of the flue 200 is heated by the combustion of pulverized coal and the flue gas, so that the temperature of the deposited coal slag is at least 800°C. The air supplied by the air duct 300 is less than 100°C. Through the direct contact between the high-temperature deposited coal slag and the cold air, the deposited coal slag will break up due to the interaction of hot and cold air. The exhaust port 301 sprays cold air towards the deposited coal slag. The gas sprayed out through the exhaust port 301 can blow up and crush the broken coal slag, thus cleaning the deposited coal slag at the bottom of the furnace 101 and the bottom of the flue 200.
[0039] Optionally, a baffle 302 is provided at the bottom of the furnace 101 and the flue 200, the gas passage 300 is located at the lower part of the baffle 302, and the upper part of the exhaust port 301 passes through the upper part of the baffle 302.
[0040] Thus, a baffle 302 is provided at the bottom of the furnace 101 and the flue 200. The baffle 302 is located at the top of the gas duct 300. The baffle 302 can effectively separate the gas duct 300 from the furnace 101 and the flue 200. This can prevent the flame in the furnace 101 from directly contacting the flue gas in the flue 200 and the gas duct 300, causing the temperature of the gas duct 300 to rise. The baffle 302 can isolate the heat of the gas duct 300 from the furnace 101 and the flue 200, ensuring that the cold air in the gas duct 300 remains at a low temperature, further optimizing the slag crushing effect. The exhaust port 301 at the top of the gas duct 300 passes through the baffle 302, and the cold air in the exhaust port 301 can directly act on the slag, making the slag crushing more thorough.
[0041] Optionally, the air passage 300 is further provided with an exhaust pipe 303, which extends to the upper part of the partition 302. The exhaust pipe 303 is provided with an air outlet 304, which sprays air towards the upper part of the partition 302.
[0042] In this way, the exhaust pipe 303 provided on the air passage 300 extends above the partition 302, and the exhaust pipe 303 extends to the upper part of the partition 302. The height of the exhaust pipe 303 is higher than the exhaust port 301. The air outlet 304 on the exhaust pipe 303 faces the partition 302. The upper part of the coal slag on the partition 302 can be cooled and crushed through the air outlet 304 on the exhaust pipe 303, which further promotes the crushing and cleaning of the coal slag. The design of the air outlet 304 of the exhaust pipe 303 facing the partition 302 can effectively prevent cold air from directly entering the furnace 101.
[0043] Optionally, an exhaust hood 305 is provided on the upper part of the air outlet 304 of the exhaust pipe 303.
[0044] In this way, the exhaust hood 305 can be effectively installed above the air outlet 304 to prevent cold air from spreading to the furnace 101, ensuring that the cold air acts on the coal slag. In addition, the exhaust hood 305 is designed with an adjustable angle to precisely control the direction of the cold air flow, further optimizing the coal slag crushing effect and improving cleaning efficiency. The exhaust hood 305 can also prevent coal slag from falling into the upper part of the exhaust pipe 303 and causing blockage, ensuring that the exhaust pipe 303 is unobstructed.
[0045] Optionally, heat exchange tubes 102 are arranged side by side on the inner wall of the furnace 101, a first drain pipe 103 is provided at the upper end of the heat exchange tubes 102, and a water inlet pipe 104 is provided at the lower part of the heat exchange tubes 102.
[0046] In this way, the heat exchange tube 102 can effectively absorb the heat of the furnace 101, and cold water is introduced through the water inlet pipe 104. The introduced cold water is heated through the heat exchange tube 102, and the heated hot water is discharged through the first drain pipe 103. The heat exchange tube 102 can realize the efficient utilization of the heat of the furnace 101 and the heating of water.
[0047] Optionally, the lower end of the heat exchange tube 102 passes through the partition 302, and the water inlet pipe 104 is disposed at the lower part of the partition 302.
[0048] In this way, the water inlet pipe 104 is located at the lower part of the partition 302, and the heat exchange tube 102 passes through the partition 302 and is connected to the water inlet pipe 104. This ensures that cold water enters the lower part of the partition to briefly heat the heat exchange tube 102 at the bottom of the plate, preventing the cold water entering the heat exchange tube 102 from directly contacting the high-temperature furnace 101, preventing damage to the heat exchange tube 102 due to large temperature differences, and extending the service life of the equipment.
[0049] Optionally, a water supply pipe 400 is provided inside the air passage 300, and a second drain pipe 401 is provided on the water supply pipe 400, the second drain pipe 401 extending into the exhaust port 301.
[0050] In this way, the water supply pipe 400 is set inside the air passage 300, and cooling water can be supplied to the air passage 300 through the water supply pipe 400. The second drain pipe 401 on the water supply pipe 400 extends into the exhaust port 301 and the exhaust pipe 303 respectively. When the exhaust pipe 303 and the exhaust port 301 exhaust air, a negative pressure will be generated to drive the water out of the second drain pipe 401. The discharged water can be discharged onto the slag in the furnace 101 along with the exhaust pipe 303 and the exhaust port 301. By spraying water onto the slag, the slag and water come into contact with each other, which can better break it up.
[0051] Optionally, the second drain pipe 401 extends into the exhaust pipe 303, and the second drain pipe 401 is located at the lower part of the exhaust hood 305.
[0052] In this way, the second drain pipe 401 extends into the exhaust pipe 303. While the exhaust pipe 303 exhausts air, it can also carry the water in the second drain pipe 401 onto the coal slag, thereby better crushing the coal slag.
[0053] Optionally, the exhaust hood 305 is a hollow conical structure, and the bottom of the exhaust hood 305 is fitted onto the air outlet 304.
[0054] Thus, the exhaust hood 305 is a hollow cone-shaped structure. The exhaust hood 305 is fitted onto the air outlet 304. The exhaust hood 305 can change the air outlet direction of the air outlet 304, so that the air outlet is directed towards the coal slag on the partition plate 302. The exhaust hood 305 can also prevent impurities from entering the air outlet 304.
[0055] Optionally, a smoke exhaust port 201 is provided at the upper part of the flue 200.
[0056] In this way, the exhaust port 201 at the top of the flue 200 can discharge the flue gas.
[0057] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A boiler slag cleaning device, characterized in that, include: Furnace body (100), which is provided with furnace chamber (101); A flue (200) is provided on one side of the furnace chamber (101) inside the furnace body (100), and the bottom of the furnace chamber (101) is connected to the bottom of the flue (200); Gas passages (300) are arranged side by side at the bottom of the furnace (101), and exhaust ports (301) are provided on the upper part of the gas passages (300).
2. The boiler slag cleaning device according to claim 1, characterized in that, The furnace (101) and the bottom of the flue (200) are provided with a partition (302), the gas duct (300) is located at the lower part of the partition (302), and the upper part of the exhaust port (301) passes through the upper part of the partition (302).
3. The boiler slag cleaning device according to claim 2, characterized in that, An exhaust pipe (303) is also provided on the air passage (300), the exhaust pipe (303) extends to the upper part of the partition (302), and an air outlet (304) is provided on the exhaust pipe (303), the air outlet (304) sprays towards the upper part of the partition (302).
4. The boiler slag cleaning device according to claim 3, characterized in that, An exhaust hood (305) is provided on the upper part of the air outlet (304) of the exhaust pipe (303).
5. The boiler slag cleaning device according to claim 4, characterized in that, The furnace (101) has heat exchange tubes (102) arranged in parallel on the inner side wall. The upper end of the heat exchange tube (102) is provided with a first drain pipe (103), and the lower part of the heat exchange tube (102) is provided with a water inlet pipe (104).
6. The boiler slag cleaning device according to claim 5, characterized in that, The lower end of the heat exchange tube (102) passes through the partition (302), and the water inlet pipe (104) is located at the lower part of the partition (302).
7. The boiler slag cleaning device according to claim 6, characterized in that, A water supply pipe (400) is provided inside the air passage (300), and a second drain pipe (401) is provided on the water supply pipe (400), the second drain pipe (401) extending into the exhaust port (301).
8. The boiler slag cleaning device according to claim 7, characterized in that, The second drain pipe (401) extends into the exhaust pipe (303), and the second drain pipe (401) is located at the lower part of the exhaust hood (305).
9. The boiler slag cleaning device according to claim 8, characterized in that, The exhaust hood (305) is a hollow cone structure, and the bottom of the exhaust hood (305) is fitted onto the air outlet (304).
10. The boiler slag cleaning device according to claim 1, characterized in that, The upper part of the flue (200) is provided with a smoke exhaust port (201).