Tail gas purification device of wet desulphurization system

Abstract

The invention provides a wet desulphurization system tail gas purification device which comprises an input pipe and further comprises a connecting ring A, a connecting shaft, a connecting rod, a switching box, a butt joint opening, an output pipe and a connecting ring B. Surface threads of the input pipe are connected with inner surface threads of the connecting ring A; according to the device, through rotation work of the connecting shaft and the connecting ring B, the input pipe and the output pipe can be smoothly separated from the butt joint opening, the working position of the butt joint opening can be smoothly switched after follow-up rotation work of the switching box, the butt joint opening can be conveniently switched, and the switching efficiency is improved. According to the filter element switching device, the filter elements in the butt joint ports can be smoothly switched, the switching work is convenient and fast, the contact time between workers and the filter elements can be shortened, potential safety hazards are reduced, and safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of industrial desulfurization, and in particular to a tail gas purification device for a wet desulfurization system. Background Art

[0002] Industrial desulfurization refers to the double alkali flue gas desulfurization technology, which was developed to overcome the disadvantage of limestone-lime method that is easy to scale. There are dozens of types. According to whether water is added during the desulfurization process and the dry and wet forms of the desulfurization products, flue gas desulfurization is divided into three major desulfurization processes: wet, semi-dry and dry. Wet desulfurization technology is relatively mature, efficient and easy to operate. The traditional limestone and lime-gypsum flue gas desulfurization process uses calcium-based desulfurizers to absorb sulfur dioxide to generate calcium sulfite and calcium sulfate. Due to their low solubility, they are very easy to form scaling and blockage in the desulfurization tower and pipelines, and a certain amount of tail gas will be generated during the purification process, which will cause air pollution.

[0003] After checking the announcement number: CN213556290U discloses a tail gas purification device for a wet flue gas desulfurization system. This technology discloses that "the tail gas collection pipeline is connected to the air inlet of the pickling tower, the tail gas outlet of the pickling tower is connected to the air inlet of the venturi device through a pipeline valve, the tail gas outlet of the venturi is connected to the tail gas inlet of the water washing tower through a pipeline, the inlet of the pickling tower circulation pump is equipped with a three-way valve, and is respectively connected to the liquid outlet at the bottom of the pickling tower and the outlet of the ammonium sulfate circulating liquid storage tank through pipelines, the outlet of the pickling tower circulation pump is connected to the pickling tower spraying device through a pipeline valve, and the excess circulating liquid is sent to the ammonium sulfate circulating liquid storage tank, and the liquid outlet at the bottom of the water washing tower is connected to the inlet of the water washing tower circulation pump through a pipeline. The device adopts a venturi device to realize the pumping of tail gas without external power. In addition, the acid washing tower circulating liquid in the device uses the weak acid circulating liquid with an acidity of 3.5-4.5% of the adjacent ammonium sulfate station as the circulating liquid, making full use of existing resources is both economical and safe".

[0004] Although the design can use a Venturi device to pump exhaust gas without external power, and the acid wash tower circulating fluid in the device uses the 3.5-4.5% weak acid circulating fluid from the adjacent ammonium sulfate station as the circulating fluid, making full use of existing resources is both economical and safe. However, the device will produce certain polluted gases in the later stages of purification, so the gas needs to be purified at this time, and the filter element inside the device needs to be replaced frequently during the filtration process.

[0005] In order to solve the above problems, this application proposes a tail gas purification device for a wet flue gas desulfurization system. Summary of the invention

[0006] To solve the problems raised in the above background technology. The present invention provides a tail gas purification device for a wet flue gas desulfurization system, which can smoothly complete the separation work between the input pipe, the output pipe and the docking port through the rotation of the connecting shaft and the B connecting ring, and can smoothly switch the working position of the docking port after the subsequent rotation of the switching box, so that it can be easily switched, and then the switching work of the filter element inside the docking port can be smoothly completed, and the switching work is convenient and fast, and can also reduce the contact time between the staff and the filter element, reduce safety hazards, and have a certain degree of safety.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wet flue gas purification device for a flue gas desulfurization system, comprising an input pipe, and also comprising an A connecting ring, a connecting shaft, a connecting rod, a switching box, a docking port, an output pipe and a B connecting ring arranged on one side of the input pipe, the surface thread of the input pipe is threadedly connected to the inner surface of the A connecting ring, and the surface of the input pipe is also fixedly mounted with the connecting shaft slidably connected to the connecting rod, and the other end of the connecting rod is fixedly mounted on the surface of the switching box, and the docking port is also fixedly mounted on the surface of the switching box, and the side of the switching box away from the input pipe is also threadedly connected to the B connecting ring, and the inner surface of the B connecting ring is also threadedly connected to the surface of the output pipe.

[0008] As a preferred embodiment of the tail gas purification device of a wet flue gas desulfurization system of the present invention, the input pipe and the output pipe have the same shape, and the input pipe and the output pipe are on the same straight line.

[0009] As a preferred embodiment of the wet flue gas purification device of the present invention, a circular through hole matching the connecting rod is provided on the surface of the connecting shaft.

[0010] As a preferred embodiment of the exhaust gas purification device of a wet flue gas desulfurization system of the present invention, the connection point between the connecting rod and the switching box is at the midpoint of the switching box.

[0011] As a preferred embodiment of the wet flue gas purification device of the present invention, circular through holes are symmetrically provided on the surface of the switching box.

[0012] As a preferred embodiment of the tail gas purification device of the wet flue gas desulfurization system of the present invention, the diameter of the docking port is the same as the inner surface diameters of the input pipe and the output pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are: through the rotation of the connecting shaft and the B connecting ring, the separation work between the input pipe and the output pipe and the docking port can be smoothly completed, and after the subsequent rotation of the switching box, the working position of the docking port can be smoothly switched, so that it can be easily switched, and then the switching work of the filter element inside the docking port can be smoothly completed, and the switching work is convenient and fast, and the contact time between the staff and the filter element can be reduced, which reduces safety hazards and has a certain degree of safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the switch box and the docking interface in the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of the switching box in the present invention in the rotation state;

[0018] Figure 4 It is a schematic diagram of the explosion structure in the present invention;

[0019] In the figure:

[0020] 1. Input pipe; 2. A connecting ring; 3. Connecting shaft; 4. Connecting rod; 5. Switching box; 6. Docking port; 7. Output pipe; 8. B connecting ring. DETAILED DESCRIPTION

[0021] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure.

[0022] The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a", "said" and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0023] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] Embodiment 1:

[0025] A tail gas purification device for a wet flue gas desulfurization system comprises an inlet pipe 1.

[0026] In this embodiment: the existing announcement number: CN213556290U discloses a tail gas purification device for a wet flue gas desulfurization system; in order to solve the technical problems existing in this prior art, as disclosed in the background technology above, "the device will produce certain polluted gases in the later stage of purification, so it is necessary to purify the gas at this time, and the device also needs to frequently replace the internal filter element during the filtering process." In terms of combined use, this problem is obviously a real problem that is difficult to solve. In view of this, in order to solve the above problems, A connecting ring 2 and connecting shaft 3 are added on this basis.

[0027] More specifically:

[0028] like Figure 1 - Figure 4 As shown:

[0029] In combination with the above content: it also includes an A connecting ring 2, a connecting shaft 3, a connecting rod 4, a switching box 5, a docking port 6, an output pipe 7 and a B connecting ring 8 arranged on one side of the input pipe 1, the surface thread of the input pipe 1 is threadedly connected to the inner surface of the A connecting ring 2, and the surface of the input pipe 1 is also fixedly installed with a connecting shaft 3 that is slidably connected to the connecting rod 4, and the other end of the connecting rod 4 is fixedly installed on the surface of the switching box 5, and at the same time, the surface of the switching box 5 is also fixedly installed with a docking port 6, and the side of the switching box 5 away from the input pipe 1 is also threadedly connected to the B connecting ring 8, and the inner surface of the B connecting ring 8 is also threadedly connected to the surface of the output pipe 7.

[0030] In this embodiment: when it is necessary to replace the filter element inside the docking port 6, the two sides of the docking port 6 can be gradually rotated at the same time. At this time, the connecting shaft 3 and the B connecting ring 8 will approach the direction of the input pipe 1 and the output pipe 7 respectively, until the connecting shaft 3 and the B connecting ring 8 are completely separated from the docking port 6, and then the switching box 5 and the docking port 6 can be rotated 180 degrees along the connecting rod 4. At this time, the connecting shaft 3 and the connecting rod 4 will rotate, and the docking port 6 in use will be separated from the input pipe 1 and the output pipe 7. The clean docking port 6 installed will be driven to the position of the input pipe 1 and the output pipe 7 under the rotation of the switching box 5. Finally, the connecting shaft 3 and the B connecting ring 8 can be connected to the docking ports 6 on both sides of the surface of the switching box 5 by rotation again, so that the docking port 6 can complete the filtering work, and then the filter element in the exposed docking port 6 can be taken out. At this time, the safe replacement of the filter element is completed, and the direct contact between the staff and the filter element can be greatly reduced in this process, which has a certain degree of safety.

[0031] Going further:

[0032] In an optional embodiment, the input pipe 1 and the output pipe 7 have the same shape, and the input pipe 1 and the output pipe 7 are on the same straight line.

[0033] In this embodiment: the input pipe 1 and the output pipe 7 located on the same straight line can dock or separate with the input pipe 1 and the output pipe 7 at the same time before and after the switching box 5 and the docking port 6 rotate, which is conducive to the smooth completion of the fixing and separation work between the connecting shaft 3 and the B connecting ring 8.

[0034] Going further:

[0035] In an optional embodiment, a circular through hole matching the connecting rod 4 is formed on the surface of the connecting shaft 3 .

[0036] In this embodiment: the circular through hole opened on the surface of the connecting shaft 3 can enable the connecting rod 4 to have a stable connection space, and can provide a stable fulcrum for the rotation of the switching box 5, which is beneficial to the replacement of the docking port 6 and the filter element therein.

[0037] Going further:

[0038] In an optional embodiment, the connection point between the connecting rod 4 and the switch box 5 is at the midpoint of the switch box 5 .

[0039] In this embodiment: the connecting rod 4 located at the midpoint of the connecting rod 4 and the switching box 5 can make the rotation of the switching box 5 more stable, and can make the docking work between the docking port 6 and the input pipe 1 and the output pipe 7 more precise before and after the switching box 5 rotates.

[0040] Going further:

[0041] In an optional embodiment, circular through holes are symmetrically provided on the surface of the switch box 5 .

[0042] In this embodiment: the circular through holes symmetrically opened on the surface of the switch box 5 can stably switch the docking port 6 when the switch box 5 rotates, thereby reducing direct contact between the staff and the filter element and reducing the occurrence of safety hazards.

[0043] Going further:

[0044] In an optional embodiment, the diameter of the docking port 6 is the same as the inner surface diameters of the input pipe 1 and the output pipe 7 .

[0045] In this embodiment, the docking port 6 having the same diameter as the input pipe 1 and the output pipe 7 allows the gas in the input pipe 1 to smoothly pass through the docking port 6 into the interior of the output pipe 7, thereby achieving the purpose of discharge and effectively reducing pollution.

[0046] The working principle and use process of the present invention are as follows: when it is necessary to replace the filter element inside the docking port 6, the two sides of the docking port 6 can be gradually rotated at the same time. At this time, the connecting shaft 3 and the B connecting ring 8 will approach the direction of the input pipe 1 and the output pipe 7 respectively, until the connecting shaft 3 and the B connecting ring 8 are completely separated from the docking port 6, and then the switching box 5 and the docking port 6 can be rotated 180 degrees along the connecting rod 4. At this time, rotation will occur between the connecting shaft 3 and the connecting rod 4, and the docking port 6 in use will be separated from the input pipe 1 and the output pipe 7. The clean docking port 6 installed will be driven to the position of the input pipe 1 and the output pipe 7 under the rotation of the switching box 5. Finally, the connecting shaft 3 and the B connecting ring 8 can be connected to the docking ports 6 on both sides of the surface of the switching box 5 by rotation again, so that the docking port 6 can complete the filtering work, and then the filter element in the docking port 6 exposed to the outside can be taken out. At this time, the safe replacement of the filter element is completed, and the direct contact between the staff and the filter element can be greatly reduced in this process, which has a certain degree of safety.

[0047] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should all be included in the protection scope of the present disclosure.

Claims

1. A tail gas purification device for a wet flue gas desulfurization system, comprising an inlet pipe (1), characterized in that: It also includes an A connecting ring (2), a connecting shaft (3), a connecting rod (4), a switching box (5), a docking port (6), an output pipe (7) and a B connecting ring (8) arranged on one side of the input pipe (1); the surface thread of the input pipe (1) is threadedly connected to the inner surface of the A connecting ring (2); the surface of the input pipe (1) is also fixedly mounted with the connecting shaft (3) slidably connected to the connecting rod (4); the other end of the connecting rod (4) is fixedly mounted on the surface of the switching box (5); the docking port (6) is also fixedly mounted on the surface of the switching box (5); the side of the switching box (5) away from the input pipe (1) is also threadedly connected to the B connecting ring (8); and the inner surface of the B connecting ring (8) is also threadedly connected to the surface of the output pipe (7).

2. The tail gas purification device of the wet flue gas desulfurization system according to claim 1 is characterized in that: The input pipe (1) and the output pipe (7) have the same shape, and the input pipe (1) and the output pipe (7) are on the same straight line.

3. The tail gas purification device of the wet flue gas desulfurization system according to claim 1, characterized in that: The surface of the connecting shaft (3) is provided with a circular through hole matching the connecting rod (4).

4. The tail gas purification device of the wet flue gas desulfurization system according to claim 1, characterized in that: The connection point between the connecting rod (4) and the switching box (5) is at the midpoint of the switching box (5).

5. The tail gas purification device of the wet flue gas desulfurization system according to claim 1, characterized in that: The surface of the switch box (5) is symmetrically provided with circular through holes.

6. The tail gas purification device of the wet flue gas desulfurization system according to claim 1, characterized in that: The diameter of the docking port (6) is the same as the inner surface diameter of the input pipe (1) and the output pipe (7).

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