Desulfurization synergistic turbulent flow uniform distribution device

Abstract

The utility model discloses a desulfurization synergistic turbulent flow uniform distribution device, which belongs to the technical field of desulfurization and comprises a desulfurization absorption tower, a spraying structure and a turbulent flow structure. The turbulent flow structure comprises a plurality of bent or bent flow deflectors, and a bent or bent flow guide channel is formed between every two adjacent flow deflectors. According to the desulfurization synergistic turbulent flow uniform distribution device disclosed by the embodiment of the utility model, the flow guide channel formed by the flow guide sheets is bent or bent, and when the flue gas works from bottom to top and the slurry works from top to bottom, the flue gas and the slurry meet in the flow guide channel and form a strong turbulent flow effect, so that the mass transfer efficiency of gas and liquid can be effectively enhanced; therefore, pollutants such as dust and sulfur dioxide in the flue gas are effectively removed. The effective flow area of the desulfurization synergistic turbulent flow uniform distribution device disclosed by the invention is up to 90% or above, and the corresponding operation resistance is also greatly reduced. The running resistance under the full-load working condition is about 300Pa, and the running energy consumption is greatly reduced while the desulfurization efficiency is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization, in particular to a desulfurization efficiency-enhancing turbulence uniform distribution device. Background Art

[0002] At present, most of the desulfurization absorption towers of coal-fired power generation units in my country adopt wet process. The combustion tail gas containing sulfur dioxide enters the desulfurization absorption tower through the inlet flue, and the spray layer sprays the absorbent to wash the tail gas, thereby generating gas-liquid mass transfer and absorbing sulfur dioxide in the tail gas. Due to the small size of the inlet flue and the fast flue gas flow rate inside, when the flue gas enters the absorption tower, it will cause uneven flow, making the flue gas flow rate fast in some areas, while the flue gas flow rate is slow in other areas, and even forming a dead zone in the local surrounding area. In this way, the absorbent sprayed by the spray layer cannot effectively and comprehensively wash the tail gas, thus affecting the desulfurization effect. In order to improve the desulfurization efficiency of the desulfurization absorption tower and tap its potential, some manufacturers have installed a distributor (tray, vortex coupler) in the desulfurization tower, but due to the small overall flow area of ​​the equipment and the large operating resistance of the equipment, although it can improve some desulfurization efficiency, the operating resistance of the equipment is relatively large (700-800pa), which increases the operating energy consumption. Utility Model Content

[0003] The utility model discloses a desulfurization efficiency-enhancing turbulence uniform distribution device to improve the above-mentioned problems.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] Based on the above purpose, the utility model discloses a desulfurization efficiency enhancement turbulence uniform distribution device, comprising:

[0006] A desulfurization absorption tower, wherein the desulfurization absorption tower is provided with a gas inlet, a gas outlet and an absorption zone, the gas inlet and the gas outlet are both connected to the absorption zone, the gas inlet is located at the side or bottom of the desulfurization absorption tower, and the gas outlet is located at the top of the desulfurization absorption tower;

[0007] a spray structure, wherein the spray structure is installed in the desulfurization absorption tower and is located between the gas inlet and the gas outlet; and

[0008] A turbulent structure, wherein the turbulent structure is installed between the spray structure and the gas inlet or installed in the spray structure, wherein the turbulent structure comprises a plurality of guide vanes, wherein the plurality of guide vanes are arranged at intervals to form a guide channel between adjacent guide vanes, wherein the guide vanes are arranged vertically, and each of the guide vanes is bent or curved so that the guide channel is bent or curved.

[0009] Optionally: efficiency-enhancing holes are provided on the guide plate.

[0010] Optionally, the efficiency-enhancing holes are provided in plurality, and the plurality of efficiency-enhancing holes are arranged at intervals along the length direction of the guide plate.

[0011] Optionally, the height of the guide plate protrusion is less than or equal to the distance between two adjacent guide plates, so that the projections of the adjacent guide plates in the vertical direction at least partially overlap.

[0012] Optionally, the turbulent structure further includes a plurality of partitions, the partitions are arranged perpendicular to the guide vanes, and at least one partition is arranged between two adjacent guide vanes.

[0013] Optionally: the partition is bent or curved, and the efficiency-enhancing hole is also provided on the partition.

[0014] Optionally: the turbulent structure further includes a frame, the frame is connected to the desulfurization absorption tower, a plurality of guide vanes are connected to the frame, and a plurality of guide vanes are located inside the frame.

[0015] Optionally: the turbulent structure further includes a support beam and a limiting pressure plate, the support beam is arranged below the guide vane, and the limiting pressure plate is arranged above the guide vane.

[0016] Optionally: a pad and a rubber lining are provided between the support beam and the guide vane.

[0017] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0018] The utility model discloses a desulfurization efficiency enhancement turbulence uniform distribution device, which includes a desulfurization absorption tower, a spray structure and a turbulence structure. The desulfurization absorption tower is provided with a gas outlet, a spray structure, a turbulence structure and a gas inlet from top to bottom, and the gas inlet is located at the side or bottom of the desulfurization absorption tower. The turbulence structure includes a plurality of bent or curved guide plates, and a bent or curved guide channel is formed between adjacent guide plates.

[0019] The desulfurization efficiency enhancement turbulence uniform distribution device disclosed in this embodiment uses a guide plate to form a guide channel that is bent or curved. When the flue gas works from bottom to top and the slurry works from top to bottom, the flue gas and the slurry meet in the guide channel and form a strong turbulence effect, which can effectively enhance the gas-liquid mass transfer efficiency, and then effectively remove pollutants such as dust and sulfur dioxide in the flue gas. The effective flow area of ​​the desulfurization efficiency enhancement turbulence uniform distribution device disclosed in this application is as high as more than 90%, and the corresponding operating resistance is also greatly reduced. The operating resistance under full load conditions is about 300Pa, which greatly reduces the operating energy consumption while significantly improving the desulfurization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a desulfurization efficiency enhancement turbulence uniform distribution device disclosed in an embodiment of the utility model is shown;

[0021] Figure 2 The utility model embodiment disclosed Figure 1 A partial enlarged schematic diagram of

[0022] Figure 3 A schematic diagram of a turbulent flow structure disclosed in an embodiment of the utility model is shown;

[0023] Figure 4 A schematic front view of a first guide vane disclosed in an embodiment of the utility model is shown;

[0024] Figure 5 A schematic side view of a guide vane disclosed in an embodiment of the utility model is shown;

[0025] Figure 6 A bottom view schematically shows a guide vane disclosed in an embodiment of the utility model;

[0026] Figure 7 A front view schematic diagram of a second guide vane disclosed in an embodiment of the utility model is shown.

[0027] In the figure:

[0028] 100-desulfurization absorption tower, 110-gas inlet, 120-gas outlet, 130-absorption area, 200-spraying structure, 300-turbulent structure, 310-guide plate, 311-efficiency improvement hole, 320-guide channel, 330-frame, 340-support beam, 350-limiting pressure plate, 360-pad, 370-rubber lining, 380-partition. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described above in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the desulfurization efficiency enhancement turbulence distribution device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0037] Example:

[0038] See also Figures 1 to 6The embodiment of the utility model discloses a desulfurization efficiency enhancement turbulence uniform distribution device, which includes a desulfurization absorption tower 100, a spray structure 200 and a turbulence structure 300. The desulfurization absorption tower 100 is provided with a gas outlet 120, a spray structure 200, a turbulence structure 300 and a gas inlet 110 from top to bottom, and the gas inlet 110 is located at the side or bottom of the desulfurization absorption tower 100. The turbulence structure 300 includes a plurality of bent or curved guide plates 310, and a bent or curved guide channel 320 is formed between adjacent guide plates 310.

[0039] The desulfurization efficiency enhancement turbulence uniform distribution device disclosed in this embodiment uses the guide channel 320 formed by the guide plate 310 to be bent or curved. When the flue gas works from bottom to top and the slurry works from top to bottom, the flue gas and the slurry meet in the guide channel 320 and form a strong turbulence effect, which can effectively enhance the gas-liquid mass transfer efficiency, and then effectively remove pollutants such as dust and sulfur dioxide in the flue gas. The effective flow area of ​​the desulfurization efficiency enhancement turbulence uniform distribution device disclosed in this application is as high as more than 90%, and the corresponding operating resistance is also greatly reduced. The operating resistance under full load conditions is about 300Pa, which significantly improves the desulfurization efficiency while greatly reducing the operating energy consumption.

[0040] See also Figure 1 All components in the desulfurization absorption tower 100 can be spliced, that is, the spray structure 200 and the turbulent structure 300 can be detachably connected to the desulfurization absorption tower 100, which is more convenient when maintaining the equipment. Of course, the detachable connection is only one implementation method in this embodiment. In other implementation methods, fixed connection and other methods are also possible.

[0041] A gas inlet 110 , a gas outlet 120 and an absorption zone 130 are provided on the desulfurization absorption tower 100 . The gas inlet 110 and the gas outlet 120 are both connected to the absorption zone 130 . The gas inlet 110 is located at the side or bottom of the desulfurization absorption tower 100 , and the gas outlet 120 is located at the top of the desulfurization absorption tower 100 .

[0042] The spray structure 200 is installed in the desulfurization absorption tower 100 , and the spray structure 200 is located between the gas inlet 110 and the gas outlet 120 . The spray structure 200 is located close to the gas outlet 120 , and the spray structure 200 sprays downward.

[0043] The turbulent structure 300 is installed between the spray structure 200 and the gas inlet 110 or in the spray structure 200. The flue gas from bottom to top and the slurry from top to bottom meet in the turbulent structure 300 and undergo a desulfurization reaction. The turbulent structure 300 is a grid structure design, which fully covers the cross section of the desulfurization absorption tower 100, which is more conducive to uniform distribution of the flue gas flow field, thereby improving the mass transfer capacity. The grid layout has a large flow area, which can optimize the uniform distribution of the flow velocity field in the absorption tower within a short distance.

[0044] See also Figures 1 to 3 The turbulent flow structure 300 includes a plurality of guide plates 310 , a frame 330 , a support beam 340 , a limit pressure plate 350 , a pad 360 , a rubber lining 370 and a partition 380 .

[0045] The frame 330 is annularly wrapped around the plurality of guide plates 310, and the frame 330 is connected to the desulfurization absorption tower 100. The plurality of guide plates 310 are arranged at intervals to form a guide channel 320 between adjacent guide plates 310, the guide plates 310 are arranged vertically, and each guide plate 310 is bent or curved so that the guide channel 320 is bent or curved. The partition 380 is arranged vertically with the guide plates 310, and at least one partition 380 is arranged between two adjacent guide plates 310, and the shape of the partition 380 is adapted to the shape of the guide plates 310. The partition 380 cooperates with the guide plates 310 to further subdivide the guide channel 320, thereby making the guide channel 320 more twisted, thereby enhancing the turbulence effect and the desulfurization effect. Since the guide channels 320 are all curved, the slurry will turn into a water curtain after entering the guide channels 320. The flue gas from bottom to top needs to pass through multiple water curtains, thereby increasing the effective area of ​​gas-liquid contact and further improving the gas-liquid mass transfer efficiency (the slurry is a multi-layer water curtain in the flow channel. The water curtain + turbulence forms a small operating resistance).

[0046] In this embodiment, the partition 380 may also be configured to be in a curved or bent shape, and even the shape of the partition 380 may be completely the same as the shape of the guide plate 310 .

[0047] See also Figures 4 to 6 , the guide plate 310 is provided with an efficiency hole 311. In addition, the baffle 380 can also be provided with an efficiency hole 311. In actual operation, the flue gas can be diverted at the efficiency hole 311, which helps to enhance the turbulence effect, thereby increasing the effective gas-liquid contact area, improving the gas-liquid mass transfer capacity, and further improving the desulfurization effect. The efficiency hole 311 is set to a plurality as needed. When more than two efficiency holes 311 are set, these efficiency holes 311 are arranged at intervals along the length direction of the guide plate 310.

[0048] The height of the protrusion of the guide plate 311 is less than or equal to the distance between two adjacent guide plates 310, so that the projections of the adjacent guide plates 310 in the vertical direction at least partially overlap. In this way, the guide channel 320 can be prevented from having a straight part, and the guide channel 320 is ensured to be a curved path, thereby enhancing the turbulence effect.

[0049] See also Figure 7 In other embodiments, it is also possible to set the guide plate 310 to be a curved shape.

[0050] See also Figure 2 The support beam 340 is arranged below the frame 330, and a pad 360 and a rubber lining 370 are arranged between the support beam 340 and the guide plate 310 to reduce wear. The limit pressure plate 350 is arranged above the guide plate 310, and the limit pressure plate 350 can be fixed by bolts and nuts, and the position of the limit pressure plate 350 corresponds to the position of the support beam 340.

[0051] In this embodiment, all components in the desulfurization efficiency enhancement turbulent flow uniform distribution device can be made of corrosion-resistant stainless steel 2205, and the equipment structure is stable. When the tower internals are inspected and repaired, it is not necessary to drain all the slurry in the tower. A temporary inspection platform can be directly built on the turbulent vortex converger, and maintenance personnel can stand on the turbulent vortex converger to maintain and replace the inside of the tower, reducing the maintenance time during operation.

[0052] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A desulfurization efficiency enhancement turbulence uniform distribution device, characterized in that: include: A desulfurization absorption tower, wherein the desulfurization absorption tower is provided with a gas inlet, a gas outlet and an absorption zone, the gas inlet and the gas outlet are both connected to the absorption zone, the gas inlet is located at the side or bottom of the desulfurization absorption tower, and the gas outlet is located at the top of the desulfurization absorption tower; A spray structure, wherein the spray structure is installed in the desulfurization absorption tower and is located between the gas inlet and the gas outlet; as well as A turbulent structure, wherein the turbulent structure is installed between the spray structure and the gas inlet or installed in the spray structure, wherein the turbulent structure comprises a plurality of guide vanes, wherein the plurality of guide vanes are arranged at intervals to form a guide channel between adjacent guide vanes, wherein the guide vanes are arranged vertically, and each of the guide vanes is bent or curved so that the guide channel is bent or curved.

2. The desulfurization efficiency enhancement turbulence uniform distribution device according to claim 1 is characterized in that: The guide plate is provided with efficiency improvement holes.

3. The desulfurization efficiency enhancement turbulence uniform distribution device according to claim 2 is characterized in that: The efficiency-enhancing holes are provided in plurality, and the plurality of efficiency-enhancing holes are arranged at intervals along the length direction of the guide plate.

4. The desulfurization efficiency enhancement turbulence uniform distribution device according to claim 2 is characterized in that: The height of the guide plate protrusion is less than or equal to the distance between two adjacent guide plates, so that the projections of the adjacent guide plates in the vertical direction at least partially overlap.

5. The desulfurization efficiency enhancement turbulence uniform distribution device according to claim 2 is characterized in that: The turbulent flow structure further includes a plurality of partitions, which are arranged perpendicularly to the guide vanes, and at least one partition is arranged between two adjacent guide vanes.

6. The desulfurization efficiency enhancement turbulence uniform distribution device according to claim 5, characterized in that: The partition is in a bent or curved shape, and the efficiency-enhancing hole is also arranged on the partition.

7. The desulfurization efficiency enhancement turbulence uniform distribution device according to any one of claims 1 to 6, characterized in that: The turbulent structure also includes a frame, which is connected to the desulfurization absorption tower, and a plurality of guide vanes are all connected to the frame, and a plurality of guide vanes are all located in the frame.

8. The desulfurization efficiency enhancement turbulence uniform distribution device according to any one of claims 1 to 6, characterized in that: The turbulent flow structure further includes a support beam and a limiting pressure plate, wherein the support beam is arranged below the guide vane, and the limiting pressure plate is arranged above the guide vane.

9. The desulfurization efficiency enhancement turbulence uniform distribution device according to claim 8, characterized in that: A backing plate and a rubber lining are arranged between the support beam and the guide vane.

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