Anti-blocking desulfurization tower unloading structure and desulfurization tower

Abstract

The utility model belongs to environmental protection engineering desulfurizing tower processing and manufacturing technical field discloses a kind of anti-blocking desulfurizing tower discharge structure and desulfurizing tower, including annular space surrounded by steel sheet;Multiple discharge hoppers are evenly arranged along the bottom periphery of annular space;The top opening of discharge hopper is all fan-shaped structure, and the radian of this fan-shaped structure is matched with the annular arc surface of annular space bottom;Discharge short pipe is fixedly connected at the bottom end of discharge hopper, discharge short pipe bottom end extends desulfurizing tower, and the sealing structure that can be opened and closed is installed at the bottom end of discharge short pipe, and discharge short pipe is perpendicular to ground;The lowest place of outer circumferential part of discharge short pipe is provided with blow-off port.Discharge channel is independent and does not affect each other, and higher reliability;Blow-off port discharges condensed water accumulated at the bottom end of discharge short pipe from discharge short pipe, avoids desulfurizer material and condensed water to mix and form consolidated mass to block discharge short pipe, also avoids to cause chemical corrosion to the inner wall of discharge short pipe and discharge hopper, prolongs the service life of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of environmental engineering desulfurization tower processing and manufacturing technology, specifically relating to a desulfurization tower unloading structure and a desulfurization tower that prevents clogging. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] Traditional dry desulfurization towers for coal gas desulfurization typically have four discharge holes at the bottom. When discharging, the discharge holes are opened, and the granular material is discharged from the discharge holes under gravity. However, there are horizontal areas between the discharge holes at the bottom of the existing desulfurization towers, which can easily create gaps and dead corners during discharging and cause packing to accumulate. This requires manual entry into the equipment for cleaning, which increases the possibility of personnel coming into contact with coal gas and poses a safety risk.

[0004] To solve this technical problem, the prior art discloses a screen unloading structure and a coal gas fine desulfurization device. The scheme sets multiple circumferentially distributed funnel-shaped unloading holes at the bottom of the annular screen, and eliminates unloading dead corners by designing the adjacent surfaces of adjacent unloading holes as inverted V-shapes, thus avoiding manual cleaning; and connects the adjacent unloading pipes to the unloading main pipe.

[0005] The above solution still has the following drawbacks: While the above solution addresses the technical problem of creating voids and dead zones during unloading, leading to packing accumulation, in actual operation of the desulfurization tower, flue gas temperature changes can cause condensation within the granular material. This condensation accumulates in the unloading pipe, mixes with the granular material, and caking, causing pipe blockage. It also severely corrodes the equipment, affecting the long-term reliability of the unloading system. Furthermore, the above solution connects the end of the unloading pipe to the main unloading pipe. This centralized design can easily create new blockage points in the main pipe when the material has high moisture content. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a desulfurization tower unloading structure and a desulfurization tower that prevents clogging. The desulfurization tower unloading structure that prevents clogging can solve the technical problem of condensate accumulating in the unloading pipeline and causing pipeline blockage in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, a desulfurization tower unloading structure for preventing blockage includes an annular space enclosed by steel plates; multiple unloading funnels are evenly arranged circumferentially along the bottom of the annular space; the top openings of the unloading funnels are all fan-shaped structures, and the curvature of the fan-shaped structure matches the annular arc surface at the bottom of the annular space. The bottom of the unloading funnel is fixedly connected to the unloading short pipe, the bottom of the unloading short pipe extends out of the desulfurization tower, the bottom of the unloading short pipe is equipped with an openable and closable sealing structure, and the unloading short pipe is perpendicular to the ground; a sewage outlet is set at the lowest point of the outer periphery of the unloading short pipe.

[0008] Preferably, the drain outlet is equipped with a drain pipe or a removable sealing plug.

[0009] Preferably, the upper edge of the fan-shaped opening at the top of the unloading funnel is continuously and fully welded to the bottom edge of the steel plate.

[0010] Preferably, the number of unloading funnels is 6 to 8.

[0011] Preferably, the bottom of the discharge funnel is continuously and fully welded to the discharge short pipe.

[0012] Preferably, the sealing structure at the bottom of the unloading short pipe adopts a manhole structure.

[0013] Preferably, the manhole structure adopts a bottom-opening design, with the hinge of the manhole cover located above the manhole cover and the opening direction facing the ground.

[0014] Preferably, the inner surfaces of the discharge funnel, discharge short pipe, and manhole structure are all coated with anti-corrosion and fireproof coatings.

[0015] Preferably, the unloading funnel is an irregularly shaped funnel formed by multiple sides.

[0016] Secondly, a desulfurization tower is provided, wherein the bottom of the desulfurization tower is equipped with a desulfurization tower unloading structure as described above to prevent clogging.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are: The bottom of each unloading funnel in this invention is independently connected to a short unloading pipe. Particulate materials are discharged directly from the bottom of the short unloading pipe. Compared with the traditional technology that combines multiple unloading pipes into a single main unloading pipe, this design avoids creating new blockage points. Furthermore, the unloading channels are independent and do not affect each other, resulting in higher reliability. A drain outlet is provided at the lowest point of the outer periphery of the short unloading pipe to drain the condensate accumulated at the bottom of the pipe. This prevents the desulfurizing agent material from mixing with the condensate to form caking and block the pipe. It also prevents the accumulated condensate from causing chemical corrosion to the inner walls of the short unloading pipe and the unloading funnel, extending the service life of the equipment and ensuring the long-term unobstructed flow of the unloading structure. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Figure 1This is an elevation view of an anti-clogging desulfurization tower unloading structure according to Embodiment 1 or Embodiment 2 of this utility model; Figure 2 This is a top view of an anti-clogging desulfurization tower unloading structure according to Embodiment 1 or Embodiment 2 of this utility model; In the picture: 1. Manhole structure; 2. Sewage pipe; 3. Discharge pipe; 4. Discharge funnel; 5. Steel plate; 6. Annular space. Detailed Implementation

[0020] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0021] The present invention will now be described in detail with reference to the accompanying drawings.

[0022] Example 1 This embodiment discloses an anti-clogging desulfurization tower unloading structure (hereinafter referred to as "unloading structure"), such as... Figure 1 , Figure 2 As shown, the annular space 6 is formed by steel plates 5, wherein the steel plates 5 include an inner wall steel plate and an outer wall steel plate. The inner wall steel plate is welded and fixed end to end to form the inner wall of the annular space 6, and the outer wall steel plate is welded and fixed end to end to form the outer wall of the annular space 6, wherein the diameter of the outer wall is larger than the diameter of the inner wall. The annular space 6 is used to contain granular desulfurizing agent materials.

[0023] like Figure 1 , Figure 2 As shown, the unloading structure also includes multiple unloading funnels 4, which are evenly arranged circumferentially along the bottom of the annular space 6. It should be noted that the multiple unloading funnels 4 are installed adjacent to each other at the bottom of the annular space 6 to avoid the presence of flat plates blocking the unloading funnels 4, which would cause the desulfurizing agent material to accumulate in the annular space 6 between the unloading funnels 4.

[0024] It should also be noted that, in this embodiment, since the annular space 6 is an annular structure and multiple unloading funnels 4 are installed adjacent to each other at the bottom of the annular space 6, the top openings of the multiple unloading funnels 4 are all fan-shaped structures, and the curvature of the fan-shaped structure corresponds and matches the annular arc surface at the bottom of the annular space 6.

[0025] like Figure 1 , Figure 2As shown, the unloading structure also includes multiple unloading short pipes 3, the number of which is equal to the number of unloading funnels 4. The diameter of each unloading short pipe 3 is equal to the bottom diameter of the unloading funnel 4. The top end of each unloading short pipe 3 is fixedly connected to the bottom end of the unloading funnel 4, and the bottom end of each unloading short pipe 3 extends out of the desulfurization tower. The outer periphery of each unloading short pipe 3 is sealed and fixedly connected to the desulfurization tower (e.g., through continuous sealing welding). In this embodiment, the bottom outlet of each unloading funnel 4 is independently and directly connected to a unloading short pipe, which is a circular steel pipe. It should be noted that the unloading short pipe 3 is open at both ends, and a closable sealing structure is installed at the bottom. The unloading short pipe 3 is perpendicular to the ground, ensuring that the bottom outlet of each unloading funnel 4 is connected to an independent, perpendicular unloading channel. Opening the sealing structure allows particulate material to be directly discharged from the bottom end of the unloading short pipe 3. This design solves the problem of traditional technology, which connects multiple unloading pipes to a single unloading main pipe, easily creating new blockage points.

[0026] Specifically, traditional technology connects multiple discharge pipes to a single main discharge pipe. Particulate material flows from these pipes into the main pipe. For materials with high moisture content, this moisture causes the material to adhere to the inner wall of the main discharge pipe. The convergence of material from multiple pipes into the main pipe can lead to reduced flow velocity and, under gravity, mutual compression, potentially creating new blockage points. This embodiment, however, uses a straight-through connection method, which, compared to the traditional method of converging multiple discharge pipes into a single main discharge pipe, avoids the formation of new blockage points.

[0027] Most importantly, each unloading funnel 4 is connected to a short unloading pipe 3 at the bottom, forming an independent unloading channel. When an abnormality occurs in a certain unloading channel, it will not affect the normal operation of other channels, making the unloading structure more reliable.

[0028] like Figure 1 As shown, the unloading structure also includes multiple drain ports, the number of which is equal to the number of unloading short pipes 3. Each unloading short pipe 3 has one drain port on its outer periphery. Specifically, a drain port is located at the lowest point of the outer periphery of the unloading short pipe 3. This drain port is used to discharge the condensate accumulated at the bottom of the unloading short pipe 3, preventing the desulfurizing agent material from mixing with the condensate to form caking and blockage of the unloading short pipe 3. It also prevents the accumulated condensate from causing chemical corrosion to the inner walls of the unloading short pipe 3 and the unloading funnel 4, extending the service life of the equipment and ensuring the long-term unobstructed flow of the unloading structure.

[0029] It is understood that in this embodiment, by connecting a vertically downward-facing discharge short pipe 3 to the bottom of the discharge funnel 4, the granular desulfurizing agent material is directly discharged from the bottom of the discharge short pipe 3. At the same time, this embodiment also opens a drain outlet at the lowest point of the outer periphery of the discharge short pipe 3 to discharge the condensate water accumulated at the bottom of the discharge short pipe 3, so as to avoid the desulfurizing agent material mixing with the condensate water to form caking material and block the discharge short pipe 3, and to avoid the creation of new blockage points.

[0030] In this embodiment, as Figure 1 As shown, the sealing structure at the bottom of the unloading short pipe 3 adopts manhole structure 1. Specifically, a fixed flange is welded to the bottom of the unloading short pipe 3 for connection with the flange of manhole structure 1. It should be noted that the manhole structure is a safety opening structure for personnel to enter and exit the equipment for installation and maintenance, and consists of a short cylindrical section (or short pipe), a flange, and a manhole cover with a handle. When the manhole cover of manhole structure 1 is opened, the bottom of the unloading short pipe 3 opens, and the desulfurizing agent material is discharged from the unloading short pipe 3.

[0031] In this embodiment, the manhole structure 1 is connected to the bottom end of the unloading short pipe 3. The manhole structure 1 adopts a bottom-opening design, meaning that the hinge of the manhole cover is located above the manhole cover, and the opening direction is towards the ground. It can be understood that the manhole structure 1 serves the dual functions of a unloading outlet and a maintenance passage. When unloading is required, the manhole cover of the manhole structure 1 is opened, and the desulfurizing agent material, under the action of gravity, passes through the unloading funnel 4 and the unloading short pipe 3, and is directly discharged from the manhole structure 1. When maintenance or inspection is required, personnel can enter through the manhole structure 1.

[0032] like Figure 1 As shown, the unloading structure also includes multiple drain pipes 2, which are installed on the drain outlet to discharge the condensate accumulated in the unloading short pipe 3. In this embodiment, the drain outlet is a pipe seat with internal threads, which is welded and fixed to the unloading short pipe 3. One end of the drain pipe 2 has external threads on its outer periphery to cooperate with the pipe seat of the drain outlet. A valve is installed at the other end of the drain pipe 2, which is opened when condensate needs to be discharged.

[0033] It should be noted that during normal operation of the desulfurization tower (non-unloading), condensate generated by temperature changes in the flue gas inside the tower flows downwards along the wall of the annular space 6 and eventually collects in the lowest unloading short pipe 3. The condensate collected at the bottom of the unloading short pipe 3 can be continuously or periodically discharged through the drain port. This design cleverly solves the problem of condensate hazards. The timely discharge of condensate effectively prevents it from mixing with desulfurizing agent dust to form caking deposits that block the unloading short pipe 3. It also avoids chemical corrosion of the unloading short pipe 3 and the inner wall of the unloading funnel 4 caused by accumulated water, greatly extending the service life of the equipment and ensuring the long-term unobstructed flow of the unloading structure.

[0034] It is also understandable that filters are installed at the drain outlet to prevent desulfurizing agent materials from being discharged with the condensate.

[0035] In some implementations, a removable sealing plug can be threaded onto the drain outlet. When drainage is required, a water recovery bucket is placed at the bottom of the drain outlet, the sealing plug is removed from the drain outlet to allow the condensate to drain out, and the sealing plug is screwed back onto the drain outlet after drainage.

[0036] In this embodiment, the upper edge of the top fan-shaped opening of the unloading funnel 4 is welded and sealed to the bottom edges of the inner wall steel plate and the outer wall steel plate by continuous full welding. The fully butt welding method ensures that the material falling from any position in the annular space 6 can slide into the unloading funnel 4 without any obstruction, eliminating any possible horizontal stagnation areas or dead corners of material accumulation at the structural root.

[0037] In this embodiment, the bottom outlet of the unloading short pipe 3 and the unloading funnel 4 are also connected by a continuous sealed weld to ensure structural strength and prevent flue gas leakage.

[0038] In this embodiment, to ensure the long-term durability of the unloading structure under the corrosive environment of sulfur-containing coal gas and the potential fire risk, all components exposed to the medium, including the inner and outer surfaces of the unloading funnel 4, the inner wall of the unloading short pipe 3, and the inner surface of the manhole structure 1, are coated with anti-corrosion and fire-retardant coatings after manufacturing. The coatings can be acid-resistant and temperature-resistant epoxy-modified or inorganic zinc-rich coatings.

[0039] In this embodiment, the number of unloading funnels 4 is 6 to 8. For example... Figure 2 As shown, six funnels are evenly distributed around the bottom of the annular space 6. Those skilled in the art will understand that the number of unloading funnels 4 is not fixed, but is adjusted according to the actual diameter of the desulfurization tower. For example, for desulfurization towers with a diameter between 3 and 5 meters, it is preferable to set 6 funnels; while for large desulfurization towers with a diameter exceeding 5 meters, it is advisable to set 8 funnels.

[0040] like Figure 1 As shown, in this embodiment, the unloading funnel 4 is an irregularly shaped funnel, which is surrounded by multiple sides, such as four sides.

[0041] Example 2 This embodiment discloses a desulfurization tower, the bottom of which is equipped with a desulfurization tower unloading structure for preventing blockage as disclosed in Embodiment 1.

[0042] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A desulfurization tower unloading structure for preventing clogging, characterized in that, It includes an annular space enclosed by steel plates; multiple unloading funnels are evenly arranged around the bottom of the annular space; the top openings of the unloading funnels are all fan-shaped structures, and the curvature of the fan-shaped structure matches the annular arc surface at the bottom of the annular space. The bottom end of the unloading funnel is fixedly connected to the unloading short pipe, the bottom end of the unloading short pipe extends out of the desulfurization tower, the bottom end of the unloading short pipe is equipped with an openable and closable sealing structure, and the unloading short pipe is perpendicular to the ground; a sewage outlet is set at the lowest point of the outer periphery of the unloading short pipe.

2. The desulfurization tower unloading structure for preventing blockage as described in claim 1, characterized in that, The drain outlet is equipped with a drain pipe or a removable sealing plug.

3. The desulfurization tower unloading structure for preventing blockage as described in claim 1, characterized in that, The upper edge of the fan-shaped opening at the top of the unloading hopper is continuously and fully welded to the bottom edge of the steel plate.

4. The desulfurization tower unloading structure for preventing blockage as described in claim 1, characterized in that, The number of unloading funnels is 6 to 8.

5. The anti-clogging desulfurization tower unloading structure as described in claim 1, characterized in that, The bottom of the unloading funnel is continuously and fully welded to the unloading short pipe.

6. The anti-clogging desulfurization tower unloading structure as described in claim 1, characterized in that, The sealing structure at the bottom of the unloading short pipe adopts a manhole structure.

7. The anti-clogging desulfurization tower unloading structure as described in claim 6, characterized in that, The manhole structure adopts a bottom-opening design, with the hinge of the manhole cover located above the manhole cover, and the opening direction facing the ground.

8. The anti-clogging desulfurization tower unloading structure as described in claim 6, characterized in that, The inner surfaces of the unloading funnel, the unloading short pipe, and the manhole structure are all coated with anti-corrosion and fireproof coatings.

9. The anti-clogging desulfurization tower unloading structure as described in claim 1, characterized in that, The unloading funnel is an irregularly shaped funnel formed by multiple sides.

10. A desulfurization tower, characterized in that, The bottom of the desulfurization tower is equipped with a desulfurization tower unloading structure as described in any one of claims 1-9.

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