A desulfurization spray system
By introducing diversion components and optimizing the baffle structure in the desulfurization spray system, the contact time between flue gas and slurry is extended, solving the problem of insufficient contact between flue gas and slurry, and improving the desulfurization effect and the quality of plume emissions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUZHOU YONGXIN NONFERROUS METALS CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-30
AI Technical Summary
In existing technologies, the residence time of flue gas in the desulfurization spray tower is insufficient, resulting in inadequate contact and reaction between the flue gas and the spray slurry, leading to poor desulfurization effect. At the same time, the low heat absorption efficiency of the spray slurry and the residual heat in the flue gas result in poor plume effect.
A desulfurization spray system including a first spray tower and a second spray tower is adopted. The contact time between flue gas and slurry is extended by using the diversion component. The diversion component is designed to absorb the heat of flue gas, and the baffle structure is optimized to promote slurry flow and remove sulfides.
It improves the contact reaction efficiency between flue gas and slurry, enhances the desulfurization effect, effectively reduces flue gas temperature, and improves plume emissions.
Smart Images
Figure CN224434447U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flue gas desulfurization technology, and in particular to a desulfurization spray system. Background Technology
[0002] Flue gas desulfurization can effectively reduce air pollution. Wet flue gas desulfurization technology is one of the most widely used pollutant gas control technologies in coal-fired power plants. Wet flue gas desulfurization uses a desulfurization spray tower with multiple spray layers arranged in the middle section. High-temperature flue gas passes through the desulfurization spray tower from bottom to top. The spray slurry is atomized by the spray device and then sprayed onto the flue gas in a convection manner to remove harmful substances such as SO2 from the flue gas.
[0003] In the existing technology, there is a technical problem that insufficient residence time of flue gas in the desulfurization spray tower leads to insufficient contact and reaction between flue gas and spray slurry, resulting in poor desulfurization effect. At the same time, a single spraying of flue gas in the desulfurization spray tower can also result in insufficient contact and reaction between flue gas and spray slurry, thus leading to poor desulfurization effect.
[0004] In addition, due to the large specific heat capacity of the spray slurry, the heat carried away by the spray slurry after a single spray in the desulfurization spray tower is limited, and a considerable amount of heat remains in the flue gas, resulting in poor plume removal effect. Utility Model Content
[0005] The main objective of this invention is to provide a desulfurization spray system to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model proposes a desulfurization spray system, comprising:
[0007] The first spray tower includes a first tower body, a first spray pipe, and a flow guiding component. The flow guiding component is installed inside the first tower body, and the first spray pipe is installed inside the first tower body and located above the flow guiding component. The first tower body has a smoke inlet and a connecting port. The smoke inlet is located above the flow guiding component, and the connecting port is located below the flow guiding component.
[0008] The second spray tower is connected to the first spray pipe and the connecting port.
[0009] In an optional embodiment, the first tower body includes a first baffle, a second baffle, a third baffle, a fourth baffle, a fifth baffle, and a sixth baffle. The first baffle and the second baffle are disposed opposite to each other and the first baffle is located above the second baffle. The third baffle and the fourth baffle are disposed opposite to each other, and the fifth baffle and the sixth baffle are disposed opposite to each other. The first baffle and the second baffle are both connected to the third baffle and the fourth baffle. The fifth baffle is connected to the first baffle, the second baffle, the third baffle, and the fourth baffle. The sixth baffle is rotatably connected to the fourth baffle and detachably connected to the first baffle, the second baffle, and the third baffle.
[0010] In an optional embodiment, the drainage component includes a plurality of first partitions and a plurality of second partitions, each first partition being connected to the third baffle and the fifth baffle and capable of abutting against the sixth baffle; each second partition being connected to the fourth baffle and the fifth baffle and capable of abutting against the sixth baffle.
[0011] In an optional embodiment, the plurality of first partitions are respectively arranged adjacent to the plurality of second partitions, and in the direction from the first baffle to the second baffle, the projection of each first partition and the projection of each second partition have an overlapping portion.
[0012] In an alternative embodiment, each first partition gradually tilts downward in the direction from the third baffle to the fourth baffle; and each second partition gradually tilts downward in the direction from the fourth baffle to the third baffle.
[0013] In an alternative embodiment, in the direction from the third baffle to the fourth baffle, the upper surface of each first baffle gradually slopes downward; and in the direction from the fourth baffle to the third baffle, the upper surface of each second baffle gradually slopes downward.
[0014] In an optional embodiment, the second spray tower includes a second tower body, a slurry tank, a plurality of second spray pipes, and a demister. The slurry tank, the plurality of second spray pipes, and the demister are arranged from bottom to top in the second tower body. The second tower body also has a smoke exhaust port located above the demister.
[0015] In an optional embodiment, the plurality of second spray pipes are respectively connected to the slurry tank through a plurality of second circulation pipes, and each second circulation pipe is connected to a second circulation pump.
[0016] In an optional embodiment, the flue gas inlet is located on the third baffle, the first spray pipe is installed on the fourth baffle and connected to the slurry tank through a first circulation pipe, the first circulation pipe being connected to a first circulation pump.
[0017] In an alternative embodiment, the communication port is located on the fourth baffle and is connected to the second tower body via a connecting pipe.
[0018] Compared with the prior art, the present invention has the following technical effects:
[0019] 1. The first spray tower of the desulfurization spray system of this utility model adopts a flow guiding component. The flue gas and slurry flow through the flow guiding component together, which prolongs the residence time of the flue gas and slurry in the first spray tower. At the same time, the flue gas and slurry fully tumble and contact within the flow guiding component, producing an effect similar to multiple sprays. This allows the flue gas and slurry to fully contact and react, improving the flue gas desulfurization effect and solving the technical problem of poor desulfurization effect caused by insufficient contact and reaction between flue gas and slurry.
[0020] Furthermore, because the specific heat capacity of the diversion component is lower than that of the slurry, the heat absorption effect of the diversion component is superior to that of the slurry. During the flow of flue gas and slurry through the diversion component, it can absorb most of the heat from the flue gas, effectively reducing the flue gas temperature and improving plume removal efficiency. This solves the technical problem of poor plume removal caused by insufficient contact time between flue gas and slurry, or low efficiency of the slurry in absorbing heat from the flue gas.
[0021] 2. By optimizing the structural design or installation angle of the first and second baffles of the diversion component, the slurry can flow more smoothly and facilitate the slurry to flush away the sulfides accumulated on the first and second baffles, thus preventing the sulfides from accumulating on the diversion component.
[0022] 3. By designing a sixth baffle, the sixth baffle can rotate relative to the fourth baffle to open or close the first tower body, which facilitates the maintenance of the first spray tower and the removal of sulfides generated in the first tower body due to the reaction of flue gas and slurry, and avoids the accumulation of sulfides on the diversion components. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the structure of a desulfurization spray system according to the present invention;
[0025] Figure 2 This is a schematic diagram of the structure of the first spray tower;
[0026] Figure 3 This is a structural schematic diagram of the first spray tower from another angle;
[0027] Figure 4 This is an exploded view of the first spray tower.
[0028] Explanation of icon numbers:
[0029] label name label name 100 Desulfurization spray system 131 First partition 1 First spray tower 132 Second partition 11 First tower 14 First circulation tube 111 Smoke inlet 15 First circulation pump 112 Connecting port 16 Connecting pipe 113 First baffle 2 Second spray tower 114 Second baffle 21 Second tower 115 Third baffle 211 Smoke vent 116 Fourth baffle 22 slurry tank 117 Fifth baffle 23 Second spray pipe 118 Sixth baffle 24 Demister 119 Hing assembly 25 Second circulation pipe 12 First spray pipe 26 Second circulation pump 13 Traffic generation components
[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0031] 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.
[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0033] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0034] Reference Figures 1-4 This utility model proposes a desulfurization spray system 100.
[0035] In this embodiment of the present invention, the desulfurization spray system 100 includes a first spray tower 1 and a second spray tower 2. The first spray tower 1 includes a first tower body 11, a first spray pipe 12, and a flow guiding assembly 13. The flow guiding assembly 13 is installed inside the first tower body 11, and the first spray pipe 12 is installed inside the first tower body 11 and located above the flow guiding assembly 13. The first tower body 11 has a flue gas inlet 111 and a connecting port 112. The flue gas inlet 111 is located above the flow guiding assembly 13, and the connecting port 112 is located below the flow guiding assembly 13. The second spray tower 2 is connected to the first spray pipe 12 and the connecting port 112.
[0036] Specifically, flue gas enters the first tower body 11 through the inlet 111. Inside the first tower body 11, the first spray pipe 12 sprays slurry through the spray nozzles, and the flue gas comes into contact with and reacts with the slurry, undergoing the first desulfurization. Then, the flue gas and slurry enter the second spray tower 2 through the connecting port 112, where the flue gas undergoes a second desulfurization. After these two desulfurization processes, the sulfur content in the flue gas is reduced, thus meeting emission requirements.
[0037] A flow guiding assembly 13 is installed inside the first tower body 11, with the first spray pipe 12 and the flue gas inlet 111 located above the flow guiding assembly 13, and the connecting port 112 located below the flow guiding assembly 13. Flue gas and slurry contact and react above the flow guiding assembly 13, and then flow together through the flow guiding assembly 13 and through the connecting port 112 into the second spray tower 2. The material of the flow guiding assembly 13 has a lower specific heat capacity than the slurry; it can be steel or cast iron. The slurry can be a solution of sodium hydroxide, magnesium hydroxide, or calcium hydroxide, but is not limited to these. The flue gas and slurry flowing together through the flow guiding assembly 13 prolongs their residence time in the first spray tower 1. Simultaneously, the flue gas and slurry fully tumble and contact within the flow guiding assembly, producing an effect similar to multiple sprays, ensuring sufficient contact and reaction between the flue gas and slurry, improving the flue gas desulfurization effect, and solving the technical problem of poor desulfurization caused by insufficient contact and reaction between the flue gas and slurry.
[0038] Furthermore, since the specific heat capacity of the diversion component 13 is lower than that of the slurry, the heat absorption effect of the diversion component 13 is superior to that of the slurry. During the flow of flue gas and slurry through the diversion component 13, the diversion component 13 can absorb most of the heat in the flue gas, effectively reducing the temperature of the flue gas and improving the plume removal effect. This solves the technical problem of poor plume removal effect caused by insufficient contact time between flue gas and slurry, or low efficiency of slurry in absorbing heat from flue gas.
[0039] Please refer to Figures 2-4In one embodiment of this utility model, the first tower body 11 includes a first baffle 113, a second baffle 114, a third baffle 115, a fourth baffle 116, a fifth baffle 117, and a sixth baffle 118. The first baffle 113 and the second baffle 114 are arranged opposite to each other, with the first baffle 113 located above the second baffle 114. The third baffle 115 and the fourth baffle 116 are arranged opposite to each other, and the fifth baffle 117 and the sixth baffle 118 are arranged opposite to each other. The first baffle 113 and the second baffle 114 are both connected to the third baffle 115 and the fourth baffle 116. The fifth baffle 117 is connected to the first baffle 113, the second baffle 114, the third baffle 115, and the fourth baffle 116. The sixth baffle 118 is rotatably connected to the fourth baffle 116 and detachably connected to the first baffle 113, the second baffle 114, and the third baffle 115.
[0040] Specifically, the first tower body 11 is formed by a first baffle 113, a second baffle 114, a third baffle 115, a fourth baffle 116, a fifth baffle 117, and a sixth baffle 118. In terms of installation position, the first baffle 113 is located above the second baffle 114, the third baffle 115 is located to the left of the fourth baffle 116, and the fifth baffle 117 is located in front of the sixth baffle 118. The sixth baffle 118 is rotatably connected to the fourth baffle 116 via hinge groups 119. The number of hinge groups 119 can be selected according to the structural dimensions of the first tower body 11. The sixth baffle 118 rotates relative to the fourth baffle 116 to open or close the first tower body 11, facilitating maintenance of the first spray tower 1 and removing sulfides generated within the first tower body 11 due to the reaction between flue gas and slurry, thus preventing sulfides from accumulating on the diversion assembly 13.
[0041] In one embodiment of this utility model, the drainage component 13 includes a plurality of first partitions 131 and a plurality of second partitions 132. Each first partition 131 is connected to a third baffle 115 and a fifth baffle 117, and can abut against a sixth baffle 118; each second partition 132 is connected to a fourth baffle 116 and a fifth baffle 117, and can abut against the sixth baffle 118. Each first partition 131 does not contact the fourth baffle 116, each second partition 132 does not contact the third baffle 115, and each first partition 131 does not contact each second partition 132. The structural dimensions of each first partition 131 are all the same, and the structural dimensions of each second partition 132 are all the same.
[0042] A plurality of first partitions 131 are respectively arranged adjacent to a plurality of second partitions 132. In the direction from the first baffle 113 to the second baffle 114, the projection of each first partition 131 and the projection of each second partition 132 overlap. It can be understood that the plurality of first partitions 131 and the plurality of second partitions 132 are arranged adjacently and interspersed, and all the baffles and all the partitions form a channel that connects the smoke inlet 111 and the connecting port 112.
[0043] In one embodiment of this utility model, the number of the first partition 131 and the second partition 132 are both 2.
[0044] In one embodiment of the present invention, the slurry flows on the upper surface of the first partition 131 and the upper surface of the second partition 132. In order to make the slurry flow more smoothly and to facilitate the slurry to wash away the sulfides accumulated on the first partition 131 and the second partition 132, each first partition 131 gradually tilts downward in the direction from the third baffle 115 to the fourth baffle 116; and each second partition 132 gradually tilts downward in the direction from the fourth baffle 116 to the third baffle 115.
[0045] To achieve a smoother flow of the slurry and facilitate the flushing of sulfides accumulated on the first baffle 131 and the second baffle 132, the structure of the first baffle 131 and the second baffle 132 can be adjusted. In the direction from the third baffle 115 to the fourth baffle 116, the upper surface of each first baffle 131 gradually slopes downwards; in the direction from the fourth baffle 116 to the third baffle 115, the upper surface of each second baffle 132 gradually slopes downwards.
[0046] Please refer to Figure 1 In one embodiment of this utility model, the second spray tower 2 includes a second tower body 21, a slurry tank 22, a plurality of second spray pipes 23, and a demister 24. The slurry tank 22, the plurality of second spray pipes 23, and the demister 24 are arranged from bottom to top within the second tower body 21, wherein the slurry tank 22 is located at the bottom of the second tower body 21. The second tower body 21 also has a flue gas outlet 211, which is located above the demister 24. The demister 24 is used to absorb other impurities in the flue gas, including but not limited to moisture and solid particles. The flue gas outlet 211 is used to discharge the flue gas after desulfurization and impurity removal from the second tower body 21. The plurality of second spray pipes 23 are respectively connected to the slurry tank 22 through a plurality of second circulation pipes 25, and each second circulation pipe 25 is connected to a second circulation pump 26.
[0047] In one embodiment of this utility model, the number of the second spray pipe 23, the second circulation pipe 25, and the second circulation pump 26 are all 3. The second circulation pump 26 is used to draw slurry from the slurry tank 22 and transport it to the second spray pipe 23 through the second circulation pipe 25. The second spray pipe 23 sprays slurry through the spray nozzle in the second tower body 21 to perform a second desulfurization of the flue gas. The slurry automatically falls back into the slurry tank 22, realizing the circulating spray desulfurization operation.
[0048] In one embodiment of this utility model, the smoke inlet 111 is located on the third baffle 115, the first spray pipe 12 is installed on the fourth baffle and is connected to the slurry tank 22 through the first circulation pipe 14, which is connected to the first circulation pump 15. The working principle is the same as that of the second spray pipe 23, the second circulation pipe 25 and the second circulation pump 26.
[0049] The connecting port 112 is located on the fourth baffle 116 and is connected to the second tower body 21 through a connecting pipe 16. Both flue gas and slurry enter the second tower body 21 through the connecting port 112 and the connecting pipe 16.
[0050] In the specific application of this application, flue gas enters the first tower body 11 through the flue gas inlet 111. Inside the first tower body 11, the first circulation pump 15 draws slurry from the slurry tank 22 and transports it to the first spray pipe 12 via the first circulation pipe 14. The first spray pipe 12 sprays the slurry onto the flue gas through the spray nozzle. Subsequently, the slurry and flue gas flow through several first baffles 131 and second baffles 132, allowing the flue gas and slurry to fully contact and react, thus performing the first desulfurization. Afterward, the flue gas enters the second tower body 21 through the connecting port 112, and the slurry flows back to the slurry tank 22 through the connecting port 112.
[0051] The second circulation pump 26 draws slurry from the slurry tank 22 and transports it through the second circulation pipe 25 to the second spray pipe 23. The second spray pipe 23 sprays the slurry onto the flue gas through spray nozzles. The flue gas contacts and reacts with the slurry, undergoing a second desulfurization process within the second tower body 21. Subsequently, the slurry automatically falls back into the slurry tank 22, and the flue gas passes through the demister 24. The demister 24 removes other impurities from the flue gas and then discharges it outside the second tower body 21 through the exhaust port 211. After two rounds of desulfurization and impurity removal, the content of sulfur, moisture, or solid particles in the flue gas is reduced, thereby meeting emission requirements.
[0052] The flue gas and slurry flow together through the diversion component 13, which prolongs the residence time of the flue gas and slurry in the first spray tower 1. At the same time, the flue gas and slurry fully tumble and come into contact within the diversion component, producing an effect similar to multiple sprays. This allows the flue gas and slurry to fully contact and react, improving the flue gas desulfurization effect and solving the technical problem of poor desulfurization effect caused by insufficient contact and reaction between the flue gas and slurry.
[0053] Furthermore, since the specific heat capacity of the diversion component 13 is lower than that of the slurry, the heat absorption effect of the diversion component 13 is superior to that of the slurry. During the flow of flue gas and slurry through the diversion component 13, the diversion component 13 can absorb most of the heat in the flue gas, effectively reducing the temperature of the flue gas and improving the plume removal effect. This solves the technical problem of poor plume removal effect caused by insufficient contact time between flue gas and slurry, or low efficiency of slurry in absorbing heat from flue gas.
[0054] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A desulfurization spray system characterized by, include: The first spray tower includes a first tower body, a first spray pipe, and a flow guiding component. The flow guiding component is installed inside the first tower body, and the first spray pipe is installed inside the first tower body and located above the flow guiding component. The first tower body has a smoke inlet and a connecting port. The smoke inlet is located above the flow guiding component, and the connecting port is located below the flow guiding component. The second spray tower is connected to the first spray pipe and the connecting port.
2. A desulphurization spray system as claimed in claim 1, wherein, The first tower body includes a first baffle, a second baffle, a third baffle, a fourth baffle, a fifth baffle, and a sixth baffle. The first baffle and the second baffle are arranged opposite to each other and the first baffle is located above the second baffle. The third baffle and the fourth baffle are arranged opposite to each other, and the fifth baffle and the sixth baffle are arranged opposite to each other. The first baffle and the second baffle are both connected to the third baffle and the fourth baffle. The fifth baffle is connected to the first baffle, the second baffle, the third baffle, and the fourth baffle. The sixth baffle is rotatably connected to the fourth baffle and detachably connected to the first baffle, the second baffle, and the third baffle.
3. A desulphurisation spray system as claimed in claim 2, wherein, The drainage component includes a plurality of first partitions and a plurality of second partitions, each of the first partitions being connected to the third baffle and the fifth baffle, and being able to abut against the sixth baffle; Each of the second partitions is connected to the fourth and fifth baffles and can abut against the sixth baffle.
4. A desulphurisation spray system as claimed in claim 3, wherein, The plurality of first partitions are respectively arranged adjacent to the plurality of second partitions, and in the direction from the first baffle to the second baffle, the projection of each first partition and the projection of each second partition have an overlapping portion.
5. A desulphurisation spray system as claimed in claim 4, wherein, In the direction from the third baffle to the fourth baffle, each first baffle gradually tilts downward; in the direction from the fourth baffle to the third baffle, each second baffle gradually tilts downward.
6. A desulfurization spray system as claimed in claim 4, wherein, In the direction from the third baffle to the fourth baffle, the upper surface of each first baffle gradually slopes downward; in the direction from the fourth baffle to the third baffle, the upper surface of each second baffle gradually slopes downward.
7. A desulphurisation spray system according to claim 5 or 6, wherein The second spray tower includes a second tower body, a slurry tank, a plurality of second spray pipes, and a demister. The slurry tank, the plurality of second spray pipes, and the demister are arranged from bottom to top in the second tower body. The second tower body also has a smoke exhaust port, which is located above the demister.
8. A desulphurisation spray system as claimed in claim 7, wherein, The plurality of second spray pipes are respectively connected to the slurry tank through a plurality of second circulation pipes, and each second circulation pipe is connected to a second circulation pump.
9. A desulphurisation spray system as claimed in claim 8, wherein, The flue gas inlet is located on the third baffle, the first spray pipe is installed on the fourth baffle and connected to the slurry tank through the first circulation pipe, and the first circulation pipe is connected to the first circulation pump.
10. A desulphurisation spray system as claimed in claim 9, wherein, The connection port is located on the fourth baffle and is connected to the second tower body via a connecting pipe.