Abrasion-proof device for atomizer of drying tower with zero emission of desulfurization wastewater
By designing anti-wear covers and reinforcing ribs on the atomizer of the zero-discharge drying tower for desulfurization wastewater, the problem of wear-prone parts caused by wear in the atomizer is solved, the service life is extended and the maintenance cost is reduced, and the stability and efficiency of the system are ensured.
Patent Information
- Application Number
- CN202520289762.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-24
AI Technical Summary
The existing desulfurization wastewater zero-discharge drying tower atomizer suffers severe wear from high-speed rotation and flue gas dust, leading to frequent replacement of vulnerable parts, which increases equipment maintenance costs and downtime.
Design an anti-wear device that includes an anti-wear cover and reinforcing ribs. By arranging the anti-wear cover and reinforcing ribs at the bottom of the atomizer, a robust protective layer is formed using wear-resistant materials to block the erosion of the atomizer by wastewater particles and impurities carried by the airflow.
It significantly extends the service life of the atomizer, reduces the replacement frequency, reduces equipment maintenance costs, and ensures the stable operation and heat and mass transfer efficiency of the desulfurization wastewater treatment system.
Smart Images
Figure CN223837131U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of atomizer anti-wear technology, specifically to an anti-wear device for an atomizer in a desulfurization wastewater zero-discharge drying tower. Background Technology
[0002] The most commonly used desulfurization technology in thermal power plants is the limestone-gypsum process, which inevitably produces desulfurization wastewater containing high concentrations of salts, such as Cl. - SO4 2- Ca 2+ Mg 2+ The state has explicitly stipulated that desulfurization wastewater cannot be directly discharged. Current treatment methods mainly include spraying at coal yards and wetting coal ash, but these methods cannot completely eliminate the generated desulfurization wastewater. In recent years, zero-discharge wastewater technology has emerged, utilizing the waste heat from the boiler's flue gas to evaporate the wastewater. The solids in the wastewater are evaporated and separated from the ash in a dust collector, while the water becomes steam and enters the flue gas, achieving the goal of completely treating the desulfurization wastewater.
[0003] The drying tower is a key piece of equipment in zero-discharge wastewater systems. The atomizer inside the drying tower uses a high-speed rotating atomizing head to atomize the wastewater, which then comes into contact with the flue gas for evaporation. The rotating atomizing head rotates at speeds reaching 15,000 rpm, and is constantly worn down by the dust in the flue gas inside the drying tower. Even when using C276 Hastelloy alloy, the rotating atomizing head is a vulnerable part of the device and needs to be replaced after wear. Therefore, it is necessary to find a suitable device to reduce the wear of the rotating atomizing head.
[0004] Therefore, there is an urgent need for a wear-resistant device for the atomizer of a desulfurization wastewater zero-discharge drying tower to improve the shortcomings of existing technologies. Utility Model Content
[0005] The purpose of this invention is to provide an anti-wear device for the atomizer of a desulfurization wastewater zero-discharge drying tower, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides an anti-wear device for an atomizer in a desulfurization wastewater zero-discharge drying tower, comprising an anti-wear cover and reinforcing ribs. The anti-wear cover and reinforcing ribs are arranged at the lower part of the atomizer. A connector is fixedly connected to the upper surface of the anti-wear cover and the reinforcing ribs. An atomizer cylinder is fixedly connected to the upper surface of the connector. The connector and the atomizer cylinder are welded together. The connector is bolted to the anti-wear cover and the reinforcing ribs. The anti-wear cover is located directly below the connector.
[0007] As a further improvement to this technical solution, the wear-resistant cover and the reinforcing ribs are integrated, the reinforcing ribs are welded to the outside of the wear-resistant cover, and a total of 6 reinforcing ribs are evenly arranged on the outer surface of the wear-resistant cover.
[0008] As a further improvement to this technical solution, the wear-resistant cover and the reinforcing rib are close to the rotating atomizing head, and the bottom of the wear-resistant cover is flush with the highest point of the rotating atomizing head.
[0009] As a further improvement to this technical solution, the connector is a pre-welded part. The connector is welded to the atomizer body before manufacturing. The connector is threaded and connected by a bolt assembly, which facilitates the replacement of the anti-wear cover.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] The anti-wear device for the atomizer in the zero-discharge desulfurization wastewater drying tower uses a special wear-resistant material to form a robust protective layer on the key wear-prone parts of the atomizer. This effectively blocks the scouring and erosion of the atomizer surface by wastewater particles and impurities carried by the airflow, greatly reducing the wear rate and significantly extending the service life of the atomizer. This reduces the high costs and downtime caused by frequent equipment replacements, ensuring the long-term stable operation of the desulfurization wastewater treatment system. The anti-wear device can always maintain the original precision and surface condition of the key components of the atomizer, ensuring that the sprayed wastewater can be uniformly and stably atomized into tiny particles. This not only improves the heat and mass transfer efficiency in the drying tower and accelerates wastewater evaporation to achieve zero discharge, but also maintains the continuity and stability of the entire desulfurization wastewater treatment process, reducing system fluctuations and additional maintenance workload caused by poor atomization. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of the embodiment;
[0013] Figure 2 This is a bottom cross-sectional view of an embodiment;
[0014] Figure 3 This is a top view of the structure of an embodiment;
[0015] Figure 4 This is a simulation diagram of the flow field at the rotating atomizing head before implementation of the embodiment;
[0016] Figure 5 The diagram shows a simulated flow field at the rotating atomizing head after implementation of the embodiment.
[0017] The meanings of the labels in the diagram are as follows:
[0018] 1. Wear-resistant cover; 2. Reinforcing ribs; 3. Connecting parts; 4. Bolt assembly; 5. Rotary atomizing head; 6. Atomizer cylinder. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figures 1-4 As shown, this embodiment provides an anti-wear device for an atomizer of a desulfurization wastewater zero-discharge drying tower, including an anti-wear cover 1 and a reinforcing rib 2. The anti-wear cover 1 and the reinforcing rib 2 are arranged at the lower part of the atomizer. A connector 3 is fixedly connected to the upper surface of the anti-wear cover 1 and the reinforcing rib 2. An atomizer cylinder 6 is fixedly connected to the upper surface of the connector 3. The connector 3 and the atomizer cylinder 6 are welded together. The connector 3 is bolted to the anti-wear cover 1 and the reinforcing rib 2. The anti-wear cover 1 is located directly below the connector 3.
[0021] The working principle is as follows: First, a connecting plate and reinforcing ribs 2 are pre-welded onto the lower part of the atomizer body, and holes are drilled to facilitate the replacement of the anti-wear cover 1. The material is the same as that of the atomizer body 6, and this process must be completed in the atomizer factory. The newly manufactured anti-wear cover 1 is bolted to the pre-installed connecting plate at the lower part of the atomizer to reduce dust wear on the rotating atomizing head 5. The anti-wear cover 1 uses inexpensive Q355 stainless steel; once worn, it can be replaced with a new one, reducing the frequency of replacing the rotating atomizing head 5 and lowering operating costs.
[0022] To increase wear resistance, in this embodiment, the wear-resistant cover 1 and the reinforcing ribs 2 are integrated. The reinforcing ribs 2 are welded to the outside of the wear-resistant cover 1, and a total of 6 reinforcing ribs 2 are evenly distributed on the outer surface of the wear-resistant cover 1. When the wear-resistant cover 1 and the reinforcing ribs 2 are designed as an integrated unit, and the reinforcing ribs 2 are evenly distributed on the outside of the wear-resistant cover 1, the reinforcing ribs 2 act like a skeleton, providing a strong support structure for the wear-resistant cover 1. In the desulfurization wastewater treatment process, the atomizer faces complex forces such as centrifugal force from high-speed rotation, airflow impact, and impact from particles in the wastewater.
[0023] To effectively prevent corrosion of the atomizer, in this implementation, the anti-wear cover 1 and reinforcing rib 2 are positioned close to the rotating atomizing head 5. The bottom of the anti-wear cover 1 is flush with the highest point of the rotating atomizing head 5, and the horizontal distance between the anti-wear cover 1 and the rotating atomizing head 5 is 100-200mm. The rotating atomizing head 5 is the core area for wastewater atomization and also the most vulnerable to corrosion. This close proximity of the anti-wear cover 1 allows for precise interception of wastewater droplets, airflows carrying corrosive substances, and potentially crystalline particles from all directions impacting the atomizing head. On one hand, the anti-wear cover 1 uses its own material to resist chemical corrosion; on the other hand, the appropriate distance ensures the effectiveness of the protection while avoiding interference with the normal rotation and atomization effect of the atomizing head due to excessive proximity. This creates a relatively stable and safe working environment for the rotating atomizing head 5, significantly reducing the risk of corrosion and extending the service life of the atomizer.
[0024] To facilitate the replacement of the anti-wear cover 1, in this embodiment, the connector 3 is a pre-welded part. The connector 3 is welded to the atomizer body 6 before manufacturing. The connector 3 is connected to the bolt assembly 4 by a thread. The bolt assembly 4 facilitates the replacement of the anti-wear cover 1. The anti-wear cover 1 and the reinforcing rib 2 are made of Q355 with a thickness of 6mm. The connector 3 is made of the same material as the atomizer body 6 and has a hole. The bolt assembly 4 is made of at least duplex stainless steel 2205. The connector 3 is made of the same material as the atomizer body 6 and has a thickness of not less than 6mm. It includes a ring plate and a reinforcing rib 2. The width of the ring plate is not greater than 200mm. The height of the reinforcing rib 2 is 100mm, and there are 6 pieces. Holes of φ14 are made on the ring plate and the reinforcing rib 2. When it is necessary to replace the anti-wear cover 1, since the connector 3 and the bolt assembly 4 are connected by a thread, the operator only needs to use the appropriate tool to unscrew the bolt assembly 4 to easily remove the old anti-wear cover 1. The wear-resistant cover 1 and the reinforcing rib 2 are made of Q355 material with a thickness of 6mm, which ensures sufficient strength and wear resistance without being too heavy to affect the installation and disassembly operations.
[0025] In this embodiment, an anti-wear device for an atomizer in a zero-discharge drying tower for desulfurization wastewater is first pre-welded to a connecting plate and reinforcing ribs 2 on the lower cylinder of the atomizer, and holes are drilled to facilitate the replacement of the anti-wear cover 1. When the anti-wear cover 1 and the reinforcing ribs 2 are designed as a single unit, and the reinforcing ribs 2 are welded to the outside of the anti-wear cover 1 and evenly distributed, the reinforcing ribs 2 act like a skeleton, providing a strong support structure for the anti-wear cover 1. During the desulfurization wastewater treatment process, the atomizer faces complex forces such as centrifugal force from high-speed rotation, airflow impact, and impact from particles in the wastewater. The material is the same as that of the atomizer cylinder 6 and must be manufactured in the atomizer factory. The anti-wear cover 1 is 100-200mm horizontally away from the rotating atomizing head 5. The rotating atomizing head 5 is the core area of wastewater atomization and also the part most susceptible to corrosion. The anti-wear cover 1 is so close that it can accurately intercept wastewater droplets, airflows carrying corrosive substances, and corrosive media such as crystal particles that may appear, all of which rush towards the atomizing head from various directions. On the one hand, the wear-resistant cover 1 uses its own material to resist chemical corrosion; on the other hand, the appropriate spacing ensures the effectiveness of the protection while avoiding interference with the normal rotation and atomization effect of the atomizing head due to excessive distance. This creates a relatively stable and safe working environment for the rotating atomizing head 5, greatly reducing the risk of corrosion and extending the service life of the atomizer. The newly manufactured wear-resistant cover 1 is bolted to the pre-reserved connecting plate at the bottom of the atomizer, reducing dust wear on the rotating atomizing head 5. The wear-resistant cover 1 uses inexpensive Q355 stainless steel, and can be replaced with a new one when it wears out. When it is necessary to replace the wear-resistant cover 1, since the connecting piece 3 and the bolt assembly 4 are connected by threads, the operator can easily remove the old wear-resistant cover 1 by simply unscrewing the bolt assembly 4 with the appropriate tools. The wear-resistant cover 1 and the reinforcing rib 2 are made of Q355 stainless steel with a thickness of 6mm, which ensures sufficient strength and wear resistance without being too heavy to affect the installation and disassembly operations, reducing the replacement frequency of the rotating atomizing head 5 and lowering operating costs.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A wear-resistant device for an atomizer in a desulfurization wastewater zero-discharge drying tower, comprising a wear-resistant cover (1) and reinforcing ribs (2), characterized in that: The anti-wear cover (1) and the reinforcing rib (2) are arranged at the lower part of the atomizer. The upper surface of the anti-wear cover (1) and the reinforcing rib (2) is fixedly connected to the connector (3). The upper surface of the connector (3) is fixedly connected to the atomizer cylinder (6). The connector (3) and the atomizer cylinder (6) are welded together. The connector (3) is bolted to the anti-wear cover (1) and the reinforcing rib (2). The anti-wear cover (1) is located directly below the connector (3).
2. The anti-wear device for the atomizer of the zero-discharge drying tower for desulfurization wastewater according to claim 1, characterized in that: The wear-resistant cover (1) and the reinforcing rib (2) are integrated. The reinforcing rib (2) is welded to the outside of the wear-resistant cover (1). A total of 6 reinforcing ribs (2) are evenly arranged on the outer surface of the wear-resistant cover (1).
3. The anti-wear device for the atomizer of the zero-discharge drying tower for desulfurization wastewater according to claim 1, characterized in that: The wear-resistant cover (1) and the reinforcing rib (2) are close to the rotating atomizing head (5), and the bottom of the wear-resistant cover (1) is flush with the highest point of the rotating atomizing head (5).
4. The anti-wear device for the atomizer of the zero-discharge drying tower for desulfurization wastewater according to claim 1, characterized in that: The connector (3) is a pre-welded part. The connector (3) is welded to the atomizer cylinder (6) before manufacturing. The connector (3) is threadedly connected to a bolt assembly (4). The bolt assembly (4) facilitates the replacement of the anti-wear cover (1).