Assembly type whirlwind plate wet desulphurization synergistic ring

Abstract

The utility model discloses an assembly type rotary inclined plate wet desulphurization synergistic ring which comprises a plurality of assemblies, the plurality of assemblies are circumferentially arranged on an absorption tower wall plate, and the centers of all the assemblies are positioned on the same plane; the assembly body comprises a rotary inclined plate and a fixing assembly, and the rotary inclined plate is fixedly mounted on the wall plate of the absorption tower through a fixing plate; the spiral inclined plates are obliquely arranged in the circumferential direction of the absorption tower, the inclination angles of all the spiral inclined plates are the same, every two adjacent spiral inclined plates are overlapped, a gap exists in the overlapping area, and the spiral inclined plates of all the assemblies form an annular structure. A circle of assembly body is arranged on an absorption tower wall plate, and rotary inclined plates in the assembly body are directly overlapped to form an annular structure; the relative resistance of the area where the annular structure is located is large, smoke does not pass through the area or the passing amount of the smoke is small, and the smoke gathering function of the synergistic ring is achieved. The problem that the desulfurization performance is influenced by the synergistic ring and the tray layer is solved by changing the radial liquid discharge of the synergistic ring to the center of the tower into the tangential liquid discharge along the circumference.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of wet desulphurization, in particular to an assembly type spiral inclined plate wet desulphurization efficiency ring, which is used in a wet desulphurization absorption tower and is also applicable to other chemical reaction containers, upper spray layer gas gathering requirements and scenarios where the performance of lower trays and sieve plates interact. BACKGROUND

[0002] At present, more than 90% of the flue gas desulphurization projects of built and under-construction thermal power plants in China use wet flue gas desulphurization technology. The absorption tower is the core device for desulphurization. The absorption tower is usually a tray tower, which is composed of one or two layers of trays and several layers of spray layers. Due to the existence of marginal effect, the liquid-gas ratio of the peripheral area of the spray layer is smaller than that of the central area. An effective method to solve this problem is to set an efficiency ring to gather the flue gas to the central area of the absorption tower. At present, the efficiency ring mainly discharges liquid radially, that is, while gathering the flue gas, the slurry in the peripheral area is also gathered to the central area of the absorption tower. This will inevitably cause the liquid holding height of the lower tray layer to be greatly reduced compared with the center, and in severe cases, the tray layer flue gas short circuit will occur, which will affect the desulphurization efficiency of the tray layer and also damage the flue gas flow field in the absorption tower, causing the overall performance of the absorption tower to deteriorate.

[0003] Considering the working environment in the absorption tower, the efficiency ring is currently mainly made of high-grade alloy or carbon steel plate lined with scales. The construction workload is large, and the material cost of the former is large, while the latter is prone to wear and corrosion during use. In addition, in order to balance the impact on the tray layer, the size of the efficiency ring is generally not large, and the total radial width is usually not more than 300 mm. SUMMARY

[0004] In view of the above-mentioned defects of the prior art, an assembly type spiral inclined plate wet desulphurization efficiency ring is provided, which can gather flue gas while solving the problem of mutual influence of the efficiency ring and the tray layer on the desulphurization performance.

[0005] The utility model adopts the technical scheme of:

[0006] The assembly type spiral inclined plate wet desulphurization efficiency ring comprises an assembly body, a plurality of assembly bodies are arranged circumferentially on the wall plate of the absorption tower, and the centers of all the assembly bodies are located on the same plane.

[0007] The assembly body comprises a spiral inclined plate and a fixing assembly, and the spiral inclined plate is fixedly installed on the wall plate of the absorption tower through the fixing plate. The spiral inclined plate is arranged obliquely along the circumferential direction of the absorption tower, the oblique angles of all the spiral inclined plates are the same, there is an overlap between any two adjacent spiral inclined plates, there is a gap in the overlap area, and the spiral inclined plates of all the assembly bodies form a ring structure.

[0008] According to the technical scheme, the fixing assembly comprises an alloy screw rod, fins, a gasket and a locking nut, a plurality of fins are fixed on the screw rod in a circumferential direction, the rotating and tilting plate is provided with a positioning groove matched with the number, shape, size and arrangement position of the fins and a center hole matched with the alloy screw rod, the rotating and tilting plate is sleeved on the alloy screw rod and is limited to rotate on the alloy screw rod by the fins and the positioning groove, the gasket is sleeved on the alloy screw rod and abuts against the outer side of the rotating and tilting plate, and the outer side end of the alloy screw rod is provided with an outer thread matched with the locking nut, so that the rotating and tilting plate and the gasket are fixed on the alloy screw rod by the locking nut.

[0009] According to the technical scheme, the arrangement position of the center hole on the rotating and tilting plate is determined according to the liquid carrying capacity of the rotating and tilting plate and the air pressure on both sides of the rotating and tilting plate.

[0010] Three fins are arranged, and the fins are axially spaced by 60 degrees.

[0011] According to the technical scheme, the inclination angle of the rotating and tilting plate is in the range of 5° to 15°, the gap C between two adjacent rotating and tilting plates is in the range of 30mm to 100mm, and the overlapping length is in the range of 50mm to 150mm.

[0012] The length H of the rotating and tilting plate in the circumferential direction of the absorption tower is in the range of 300mm to 800mm, the width W of the rotating and tilting plate is in the range of 200mm to 600mm, and the thickness of the rotating and tilting plate is in the range of 6mm to 10mm.

[0013] According to the technical scheme, the diameter d of the alloy screw rod is in the range of 12mm to 18mm, the length L of the alloy screw rod is in the range of W+30mm, and the length of the outer thread is not less than 40mm.

[0014] The fins are arranged at the middle part of the alloy screw rod, the length of the fins is not less than 40mm, the fins are made of alloy plates with a thickness of 2mm to 3mm, and the width of the fins is 20mm to 30mm.

[0015] The gasket is a circular gasket with a diameter of 40mm to 50mm.

[0016] The center hole is located at the length direction H1 of the rotating and tilting plate, H1 is the distance between the center hole and the lower part of the rotating and tilting plate, and H1 is in the range of 0.33H to 0.45H.

[0017] According to the technical scheme, the support plate and the support gasket are further included, the support gasket is attached to the inner wall of the absorption tower, the support plate and the support gasket are both located below the rotating and tilting plate, the support plate is connected between the support gasket and the rotating and tilting plate, and the rotating and tilting plate, the support plate and the support gasket are integrally casted.

[0018] According to the technical scheme, the thickness of the support plate is 8-12 mm, and the width of the support plate is 80-150 mm; the support backing plate is 5-8 mm thick and is made of a square plate with a side length of 80-150 mm.

[0019] According to the technical scheme, the fixing component is made of corrosion-resistant alloy; the rotating and tilting plates and the support plate and the support backing plate are integrally molded by PP or FRP material.

[0020] According to the technical scheme, the rotating and tilting plate is provided with a liquid guide groove at the lower end in the length direction.

[0021] According to the technical scheme, the liquid guide groove is sawtooth-shaped, the sawtooth height V is 10-20 mm, and the angle of the sawtooth is 50-70°.

[0022] The utility model has the following beneficial effects:

[0023] 1. A set of assembly bodies are arranged on the wall plate of the absorption tower, the rotating and tilting plates in the assembly bodies directly overlap each other, and form a ring structure; the area where the ring structure is located has relatively large resistance, flue gas does not pass through the area or the passing amount is small, and the function of gathering flue gas by the efficiency ring is achieved. In addition, since the rotating and tilting plates are arranged in a tilting manner along the circumferential direction of the absorption tower, under the working condition, the slurry falls along the tangent and uniformly falls in the peripheral area of the tray under the action of gravity, and does not affect the lower tray component; by changing the radial liquid discharge of the efficiency ring to the center of the tower into the tangential liquid discharge along the circumference, the problem of mutual influence of the efficiency ring and the tray layer on the desulfurization performance is solved.

[0024] 2. The rotating and tilting plates are vertically supported by the support plate and the support backing plate, and the alloy screw rod only provides horizontal support for the rotating and tilting plates; the installation work of the rotating and tilting plates is simplified, and the construction workload is small.

[0025] 3. The fixing component is made of corrosion-resistant alloy, and the rotating and tilting plate module is made of PP, FRP or other materials meeting the strength and corrosion resistance requirements. The amount of the whole alloy is equivalent to 5-10% of the conventional alloy efficiency ring, and the cost is obviously reduced.

[0026] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and the content of the specification can be implemented, the following is a detailed description of the preferred embodiments of the utility model with reference to the drawings. The specific implementation of the utility model is given in detail by the following embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the utility model, and constitute a part of the application, the schematic embodiments of the utility model and the description are used to explain the utility model, and do not constitute improper limitation on the utility model.

[0028] Figure 1 is the structural schematic view of the assembly body on the absorption tower wall plate provided by the embodiment of the utility model;

[0029] Figure 2 is the front view of the assembly body provided by the embodiment of the utility model;

[0030] Figure 3 is the side view of the assembly body provided by the embodiment of the utility model;

[0031] Figure 4 is the top view of the assembly body provided by the embodiment of the utility model;

[0032] Figure 5 is the structural schematic view between the plurality of rotating inclined plates provided by the embodiment of the utility model;

[0033] Figure 6 is the front view of the fixing assembly provided by the embodiment of the utility model;

[0034] Figure 7 is the side view of the fixing assembly provided by the embodiment of the utility model;

[0035] Figure 8 is the top view of the fixing assembly provided by the embodiment of the utility model;

[0036] Figure 9 is the structural schematic view between the rotating inclined plate, the supporting plate and the supporting backing plate provided by the embodiment of the utility model;

[0037] Figure 10 is the structural schematic view of the rotating inclined plate provided by the embodiment of the utility model;

[0038] Figure 11 is the enlarged view of C of Figure 10 ;

[0039] In the figure, 1, assembly body; 2, absorption tower wall plate; 3, rotating inclined plate; 4, fixing assembly; 5, alloy screw rod; 6, fin; 7, gasket; 8, locking nut; 9, positioning groove; 10, center circular hole; 11, supporting plate; 12, supporting backing plate; 13, liquid guide groove; A, flue gas flow direction; B, slurry flow direction. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings Figures 1-11The principles and features of the present application are described, the examples are used to explain the present application, and are not intended to limit the scope of the present application. In the following paragraphs, the present application is described in more detail with reference to the accompanying drawings. The advantages and features of the present application will be more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and use non-precise proportions, only to facilitate, clearly assist in explaining the purpose of the present application embodiments.

[0041] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "disposed on" another component, it can be directly disposed on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0043] Referring to Figures 1-11 As shown in the drawings, the present application provides an assembled rotating inclined plate wet desulfurization efficiency ring.

[0044] Embodiment 1

[0045] The assembly body 1 is circumferentially arranged on the absorption tower wall plate 2, and the centers of all assembly bodies are located on the same plane;

[0046] The assembly body includes a rotating inclined plate 3 and a fixing assembly 4, the rotating inclined plate is fixedly installed on the absorption tower wall plate through the fixing plate; the rotating inclined plate is arranged in the circumferential direction of the absorption tower, the inclination angles of all rotating inclined plates are the same, there is an overlap between the adjacent two rotating inclined plates, and there is a gap in the overlap area, and the rotating inclined plates of all assembly bodies form a ring structure.

[0047] In the embodiment, a ring of assembly bodies is arranged on the wall plate of the absorption tower, and the helical plates in the assembly bodies directly overlap each other to form a ring structure; the area where the ring structure is located has relatively large resistance, and the flue gas does not pass through or has a small amount of passing through, thereby achieving the function of gathering the flue gas by the efficiency ring. In addition, the helical plates are arranged in the circumferential direction of the absorption tower, and under the working condition, the slurry falls along the tangent and uniformly falls in the peripheral area of the tray under the action of gravity, without affecting the lower tray components, thereby solving the mutual influence of the efficiency ring and the tray layer on the desulfurization performance, and achieving the purpose of improving the overall performance of the absorption tower.

[0048] In the embodiment 1, the inclination angle of the helical plate is in the range of 5°-15°, the gap C between two adjacent helical plates is in the range of 30mm-100mm, and the overlapping length is in the range of 50mm-150mm.

[0049] The length H of the helical plate in the circumferential direction of the absorption tower is in the range of 300mm-800mm, the width W of the helical plate is in the range of 200mm-600mm, and the thickness of the helical plate is in the range of 6mm-10mm.

[0050] Embodiment 2

[0051] The structure and principle of the embodiment 2 are similar to those of the embodiment 1, and the difference is that a preferred structure of the fixing assembly is given.

[0052] The fixing assembly includes an alloy screw 5, fins 6, a gasket 7, and a locking nut 8. The fins are fixed on the screw in the circumferential direction with a spacing, and the helical plate is provided with a positioning groove 9 matched with the number, shape, size and arrangement position of the fins, and a center circular hole 10 matched with the alloy screw. The helical plate is sleeved on the alloy screw and is limited in rotation on the alloy screw by the fins and the positioning groove. The gasket is sleeved on the alloy screw and abuts against the outer side of the helical plate. The outer thread matched with the locking nut is arranged on the outer end of the alloy screw, and the helical plate and the gasket are fixed on the alloy screw by the locking nut. As shown in the figure, A is the flow direction of the flue gas, and B is the flow direction of the slurry on the helical plate.

[0053] In the embodiment, the rotation of the helical plate on the alloy screw is limited by the fins and the positioning hole on the alloy screw, and the sliding of the helical plate on the alloy screw is limited by the gasket and the locking nut.

[0054] In the embodiment 2, the arrangement position of the center circular hole on the helical plate is determined according to the liquid carrying capacity of the helical plate and the air pressure on both sides of the helical plate. Preferably, three fins are arranged, and the fins are axially spaced by 60°.

[0055] In the embodiment 2, preferably, the diameter d of the alloy screw is 12mm-18mm, the length L of the alloy screw is W+30mm, and the length of the external thread is not less than 40mm (50mm in the embodiment).

[0056] The fin is arranged in the middle of the alloy screw, the length of the fin is not less than 40mm (50mm in the embodiment), the fin is made of 2mm-3mm thick alloy plate, and the width of the fin is 20mm-30mm.

[0057] The gasket is a circular gasket with a diameter of 40mm-50mm.

[0058] The central circular hole is located at the length direction H1 of the swash plate, H1 is the distance between the central circular hole and the lower part of the swash plate, and the value range of H1 is 0.33-0.45H.

[0059] Embodiment 3

[0060] The structure and principle of the embodiment 3 are similar to those of the embodiment 2, and the difference is that, in order to further improve the stability of the swash plate in the tower body, a support plate 11 and a support gasket 12 are further included, the support gasket is attached to the inner wall of the absorption tower, the support plate and the support gasket are located below the swash plate, and the support plate is connected between the support gasket and the swash plate; preferably, the swash plate, the support plate and the support gasket are integrally casted. In the embodiment, the swash plate is vertically supported by the support plate and the support gasket, and the alloy screw only provides horizontal support for the swash plate.

[0061] In the embodiment 3, the thickness of the support plate is 8mm-12mm, and the width of the support plate is 80mm-150mm; the support gasket is 5mm-8mm thick and is made of a square plate with a side length of 80mm-150mm.

[0062] The fixed assembly is made of corrosion-resistant alloy; the swash plate, the support plate and the support gasket are integrally molded by PP (polypropylene) or FRP (fiber reinforced composite material); the use amount of high-grade alloy is reduced, and the cost of setting the efficiency ring is reduced.

[0063] Embodiment 4

[0064] The structure and principle of the embodiment 4 are similar to those of the embodiments 1-3, and the difference is that, in order to facilitate the uniform sliding of the slurry, a liquid guide groove 13 is arranged at the lower end of the swash plate in the length direction. The liquid guide groove is zigzag-shaped, the zigzag height V is preferably 10mm-20mm, and the angle of the zigzag is preferably 50°-70°.

[0065] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form; any person skilled in the art can smoothly implement the present application according to the drawings shown in the specification and the above description; however, any person skilled in the art can make slight changes, modifications and equivalent changes of the present application within the scope of the technical scheme of the present application, and the equivalent embodiments of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A prefabricated rotary inclined plate wet desulfurization efficiency enhancement ring, characterized in that: It includes assemblies, several assemblies are arranged circumferentially on the absorber tower wall panel, and the centers of all assemblies are located on the same plane; The assembly includes a swivel plate and a fixing component. The swivel plate is fixedly installed on the wall of the absorption tower by the fixing plate. The swivel plates are arranged at an angle along the circumference of the absorption tower. All the swivel plates have the same angle of inclination. There is an overlap between two adjacent swivel plates, and there is a gap in the overlapping area. The swivel plates of all the assemblies form a ring structure. In operation, the slurry flows downward along the inclined plate under the action of gravity and falls evenly along the tangent to the area around the tray.

2. The assembled inclined plate wet desulfurization efficiency-enhancing ring according to claim 1, characterized in that: The fixing assembly includes an alloy screw, fins, washers, and a locking nut. Several fins are circumferentially fixed to the screw. The swivel plate has positioning grooves that match the number, shape, size, and arrangement of the fins, and a central circular hole that matches the alloy screw. The swivel plate is fitted onto the alloy screw, and the rotation of the swivel plate on the alloy screw is restricted by the fins and positioning grooves. The washers are fitted onto the alloy screw and abut against the outer edge of the swivel plate. The outer end of the alloy screw has an external thread that matches the locking nut. The locking nut fixes the swivel plate and washers onto the alloy screw.

3. The assembled inclined plate wet desulfurization efficiency-enhancing ring according to claim 2, characterized in that: The location of the central circular hole on the swirl plate is determined based on the liquid load of the swirl plate and the wind pressure on both sides of the swirl plate. The device is equipped with three fins, with an axial spacing of 60° between them.

4. The assembled swirl plate wet desulfurization efficiency-enhancing ring according to any one of claims 1-3, characterized in that: The tilt angle of the swivel plate ranges from 5° to 15°, the gap C between two adjacent swivel plates is 30mm to 100mm, and the overlap length is 50mm to 150mm. The length H of the swirl plate along the circumference of the absorption tower ranges from 300mm to 800mm, the width W of the swirl plate ranges from 200mm to 600mm, and the thickness of the swirl plate ranges from 6mm to 10mm.

5. The assembled inclined plate wet desulfurization efficiency-enhancing ring according to claim 4, characterized in that: The diameter d of the alloy screw ranges from 12mm to 18mm, the length L of the alloy screw ranges from W+30mm, and the length of the external thread is not less than 40mm. The fins are located in the middle of the alloy screw. The length of the fins is not less than 40mm. The fins are made of alloy plates with a thickness of 2mm to 3mm and a width of 20mm to 30mm. The gaskets are round gaskets with a diameter of 40mm to 50mm; The central circular hole is located at H1 along the length of the inclined plate, where H1 is the distance between the central circular hole and the lower part of the inclined plate; the value of H1 ranges from 0.33 to 0.45H.

6. The assembled inclined plate wet desulfurization efficiency-enhancing ring according to claim 1 or 2, characterized in that: It also includes a support plate and a support pad. The support pad is attached to the inner wall of the absorption tower. Both the support plate and the support pad are located below the swirl plate, and the support plate is connected between the support pad and the swirl plate. The swirl plate, the support plate, and the support pad are integrally cast.

7. The assembled inclined plate wet desulfurization efficiency-enhancing ring according to claim 6, characterized in that: The support plate has a thickness of 8mm to 12mm and a width of 80mm to 150mm; the support pad has a thickness of 5mm to 8mm and is made of a square plate with a side length of 80mm to 150mm.

8. The assembled swirl plate wet desulfurization efficiency-enhancing ring according to claim 7, characterized in that: The fixing components are made of corrosion-resistant alloy; the swivel plate, support plate and support pad are integrally molded from PP or FRP material.

9. The assembled inclined plate wet desulfurization efficiency-enhancing ring according to claim 1, characterized in that: A liquid guiding groove is provided at the lower end of the inclined plate in the longitudinal direction.

10. The assembled inclined plate wet desulfurization efficiency-enhancing ring according to claim 9, characterized in that: The liquid guiding groove is serrated, with a serration height V of 10mm~20mm and a serration angle of 50°~70°.

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