Demisting device for high-sulfur waste desulfurization

Abstract

The utility model relates to the field of high-sulfur waste desulfurization, in particular to a demisting device for high-sulfur waste desulfurization, which comprises a tower body, a spiral guide vane component and a multi-stage filter component, the spiral guide vane component comprises a spiral vane, a driving component and a support, the support is arranged in the tower body, and the spiral vane is arranged in the tower body. The driving assembly is arranged at the lower end of the tower body, the spiral blade is arranged on the support, the lower end of the spiral blade is connected with the driving assembly, a T-shaped flow guide groove is formed in a spiral blade array, and the multi-stage filtering assembly comprises a hydrophobic modified PTFE fiber woven adsorption block layer and a sulfur-philic modified glass fiber cotton adsorption block layer which are arranged upwards. A nano zinc oxide loading coating is arranged on the surface of the sulfur-loving modified glass fiber cotton adsorption block layer, an air outlet is formed in the top of the tower body, a liquid discharging groove is formed in the bottom of the tower body, and an air inlet located above the support is formed in the middle of the tower body.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization of high-sulfur waste, and specifically to a demisting device for desulfurization of high-sulfur waste. Background Technology

[0002] In an oxygen-enriched side-blown incinerator production line, the oxygen required for combustion inside the furnace is continuously injected by the air distribution system. The combustion process generates high temperatures and strong oxidizing conditions, during which sulfur-containing raw materials, auxiliary materials, and fuels are converted into sulfur dioxide under the influence of high temperature and oxidation. Furthermore, if combustion inside the incinerator is incomplete, some of the sulfur produced will remain in the fly ash as sulfides. These sulfides will also oxidize into sulfur dioxide during afterburning, generating a large amount of sulfur-containing mist. This mist not only pollutes the environment but also affects subsequent processes.

[0003] Therefore, in order to overcome the shortcomings of the existing technology, it is necessary to design a simple demisting device for desulfurization of high-sulfur waste. Utility Model Content

[0004] This invention provides a demisting device for desulfurizing high-sulfur waste to address the problems of existing technologies.

[0005] The objective of this utility model can be achieved through the following technical solution: A demisting device for desulfurization of high-sulfur waste includes: a tower body, a spiral guide vane assembly, and a multi-stage filtration assembly. The spiral guide vane assembly includes spiral blades, a drive assembly, and a support. The support is disposed inside the tower body, the drive assembly is disposed at the lower end of the tower body, the spiral blades are disposed on the support and the lower end is connected to the drive assembly, and the spiral blade array is provided with a T-shaped guide groove. The multi-stage filtration assembly includes an upwardly arranged hydrophobic modified PTFE fiber woven adsorption block layer and a sulfur-modified glass fiber cotton adsorption block layer. The surface of the sulfur-modified glass fiber cotton adsorption block layer is provided with a loaded nano zinc oxide coating. The top of the tower body is provided with an air outlet, the bottom of the tower body is provided with a drain trough, and the middle of the tower body is provided with an air inlet located above the support.

[0006] In a further improvement, the tower body is provided with a slot one, in which the hydrophobic modified PTFE fiber woven adsorption block layer and the sulfur-modified glass fiber cotton adsorption block layer are slidably engaged in the corresponding slot one. A sealing plate is slidably provided on the outside of the tower body, and a slot two is provided on the inner side of the sealing plate corresponding to the hydrophobic modified PTFE fiber woven adsorption block layer and the sulfur-modified glass fiber cotton adsorption block layer.

[0007] A further improvement is that the pore size of the hydrophobic modified PTFE fiber woven adsorption block layer is 3-5 mm.

[0008] As a further improvement, the bracket is provided with a tapered sheath in the middle and an arc-shaped guide surface on the upper surface of the bracket.

[0009] As a further improvement, the spiral blades and the surface of the drainage tank are coated with a corrosion-resistant silicon carbide ceramic coating.

[0010] Compared with existing technologies, the beneficial effects of this utility model's demisting device for high-sulfur waste desulfurization are as follows:

[0011] The spiral guide vane assembly utilizes centrifugal force to throw large droplets toward the inner wall of the tower. Simultaneously, the T-shaped guide groove design enhances droplet collision and coalescence, merging small droplets into larger ones, further improving separation efficiency. The flue gas after cyclone separation then passes through a multi-stage filtration system. Hydrophobic modified PTFE fiber woven adsorption blocks and sulfur-modified glass fiber cotton adsorption blocks adsorb water vapor and sulfides from the mist, respectively, achieving deep purification of sulfur-containing mist. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the cross-section of the helical blade in this utility model.

[0014] Figure 3 This is a schematic diagram of the structure of the bracket in this utility model.

[0015] In the diagram, 1-tower body, 11-slot one, 12-sealing plate, 13-slot two, 2-spiral guide vane assembly, 21-spiral blade, 211-T-shaped guide groove, 22-drive assembly, 23-support, 231-conical sleeve, 232-arc guide surface, 3-multi-stage filter assembly, 31-hydrophobic modified PTFE fiber woven adsorption block layer, 32-sulfophilic modified glass fiber cotton adsorption block layer, 33-loaded nano zinc oxide coating, 51-air outlet, 52-drainage groove, 53-air inlet. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The following is a description of the embodiments and appendices. Figures 1-3 The technical solution of this utility model will be further described below.

[0019] Example 1

[0020] A demisting device for desulfurization of high-sulfur waste includes: a tower body 1, a spiral guide vane assembly 2, and a multi-stage filtration assembly 3. The spiral guide vane assembly 2 includes spiral blades 21, a drive assembly 22, and a support 23. The support 23 is disposed inside the tower body 1. The drive assembly 22 is disposed at the lower end of the tower body 1. The spiral blades 21 are disposed on the support 23 and connected to the drive assembly 22 at their lower ends. The spiral blades 21 are arrayed with T-shaped guide grooves 211. The multi-stage filtration assembly 3 includes an upwardly arranged hydrophobic modified PTFE fiber woven adsorption block layer 31 and a sulfur-loving modified glass fiber cotton adsorption block layer 32. The surface of the sulfur-loving modified glass fiber cotton adsorption block layer 32 is provided with a loaded nano zinc oxide coating 33. The top of the tower body 1 is provided with an air outlet 51, the bottom of the tower body 1 is provided with a drain trough 52, and the middle of the tower body 1 is provided with an air inlet 53 located above the support 23.

[0021] like Figures 1-3 As shown, the working principle of this utility model is as follows: the spiral blades rotate inside the tower body through the drive component. Guided by the spiral blades, a high-speed rotating swirling flow field is formed. In the swirling flow field, large droplets (>50μm) in the flue gas, due to their higher density, are thrown towards the inner wall of the tower body under the action of centrifugal force and slide down the wall to the bottom drain trough. The T-shaped guide groove design on the surface of the spiral blades enhances the collision and coalescence of droplets. Due to the geometry of the groove and the surface tension, small droplets merge into large droplets, further improving the separation efficiency. After the swirling separation, the large droplets have been removed from the flue gas, and the flue gas enters the multi-stage filtration component.

[0022] Sulfur-containing mist first passes through a hydrophobically modified PTFE fiber woven adsorption block layer. This material has good hydrophobicity, and the hydrophobic surface makes it difficult for mist droplets to penetrate. Medium-sized mist droplets agglomerate into large droplets on the grid surface and drip downwards due to gravity. Next, it passes through a sulfur-loving modified glass fiber cotton adsorption block layer. The nano-zinc oxide coating on its surface has a strong adsorption capacity for sulfides, which can further adsorb sulfides in the mist. The nano-zinc oxide undergoes a chemical adsorption reaction with sulfur-containing aerosols (such as SO2 and H2SO4 mist droplets), fixing the sulfides on the fiber surface, achieving deep purification of sulfur-containing mist. Finally, the flue gas is discharged from the outlet.

[0023] By combining physical separation with chemical adsorption, efficient removal of droplets and aerosols from high-sulfur flue gas can be achieved.

[0024] As a further preferred embodiment, the tower body 1 is provided with a slot 11 inside, and the hydrophobic modified PTFE fiber woven adsorption block layer 31 and the sulfophilic modified glass fiber cotton adsorption block layer 32 are respectively slidably engaged in the corresponding slot 11. A sealing plate 12 is slidably provided on the outside of the tower body 1, and a slot 13 is provided on the inner side of the sealing plate 12 corresponding to the hydrophobic modified PTFE fiber woven adsorption block layer 31 and the sulfophilic modified glass fiber cotton adsorption block layer 32. The design of slots 1 and 2 allows the hydrophobic modified PTFE fiber woven adsorption block layer and the sulfophilic modified glass fiber cotton adsorption block layer to be easily installed and replaced. Through the sliding engagement method, the adsorption block layer can be quickly fixed inside the tower body, while the sealing plate can ensure the airtightness of the tower body and prevent gas leakage.

[0025] As a further preferred embodiment, the pore size of the hydrophobic modified PTFE fiber woven adsorption block layer 31 is 3-5 mm. The hydrophobic surface of the hydrophobic modified PTFE fiber woven adsorption block layer makes it difficult for droplets to penetrate. Medium-sized droplets of 10-50 μm agglomerate into larger droplets on the grid surface and eventually drip downwards due to gravity.

[0026] As a further preferred embodiment, the bracket 23 is provided with a tapered sheath 231 in the middle, and the upper surface of the bracket 23 is provided with an arc-shaped guide surface 232. The tapered sheath 231 can protect the bearing installed on the rotor shaft of the helical blade, and the arc-shaped guide surface 232 can allow sulfur-containing droplets to slide down from the surface of the bracket 23.

[0027] As a further preferred embodiment, the surfaces of the spiral blade 21 and the drain tank 52 are provided with a corrosion-resistant silicon carbide ceramic coating. The corrosion-resistant silicon carbide ceramic coating can effectively prevent the spiral blade and the surface of the drain tank from being corroded, thus extending the service life of the device.

[0028] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A demisting device for desulfurization of high-sulfur waste, characterized in that, include: The system comprises a tower body, a spiral guide vane assembly, a multi-stage filtration assembly, and a high-pressure pulse spray assembly. The spiral guide vane assembly includes spiral blades, a drive assembly, and a support. The support is located inside the tower body, and the drive assembly is located at the lower end of the tower body. The spiral blades are mounted on the support and connected to the drive assembly at their lower ends. The spiral blade array has T-shaped guide grooves. The multi-stage filtration assembly includes an upwardly positioned hydrophobic modified PTFE fiber woven adsorption block layer and a sulfur-modified glass fiber cotton adsorption block layer. The surface of the sulfur-modified glass fiber cotton adsorption block layer is coated with a loaded nano-zinc oxide coating. The high-pressure pulse spray assembly includes multiple sets of high-pressure spray pipes located on the top side inside the tower body and a water pump assembly located on the top outside the tower body. The high-pressure spray pipes are connected to the water pump assembly via pipes. The top of the tower body has an air outlet, the bottom of the tower body has a drain trough, and the middle of the tower body has an air inlet located above the support.

2. A demisting device for desulfurization of high-sulfur waste according to claim 1, characterized in that, The tower body is provided with a slot one inside, and the hydrophobic modified PTFE fiber woven adsorption block layer and the sulfur-modified glass fiber cotton adsorption block layer are respectively slidably engaged in the corresponding slot one. A sealing plate is slidably provided on the outside of the tower body, and a slot two is provided on the inner side of the sealing plate corresponding to the hydrophobic modified PTFE fiber woven adsorption block layer and the sulfur-modified glass fiber cotton adsorption block layer.

3. The demisting device for desulfurization of high-sulfur waste according to claim 1, characterized in that, The pore size of the hydrophobic modified PTFE fiber woven adsorption block layer is 3-5 mm.

4. The demisting device for desulfurization of high-sulfur waste according to claim 1, characterized in that, The bracket has a tapered sheath in the middle and an arc-shaped guide surface on the upper surface of the bracket.

5. A demisting device for desulfurization of high-sulfur waste according to claim 1, characterized in that, The spiral blades and the surface of the drainage tank are coated with a corrosion-resistant silicon carbide ceramic coating.

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