Device and method for preventing scouring and improving efficiency of spraying layer of desulfurizing absorption tower and desulfurizing absorption tower

Abstract

The invention provides an anti-scour efficiency-improving device and method for a spraying layer of a desulfurizing absorption tower and the desulfurizing absorption tower, the anti-scour efficiency-improving device comprises a supporting main beam, a supporting auxiliary beam, a spraying main pipe, spraying branch pipes and nozzles, the supporting main beam is provided with a main pipe beam-penetrating round hole, and the spraying main pipe horizontally penetrates through the main pipe beam-penetrating round hole; the supporting auxiliary beam is located below the supporting main beam, and a U-shaped arc pressing plate is arranged on the supporting auxiliary beam and used for bearing and fixing the spraying branch pipe. A plurality of nozzles are arranged on the spraying branch pipes, and all the nozzles are arranged on the same horizontal plane. A traditional seat beam type structure is changed into a penetrating beam type support, so that pipeline scouring and vibration abrasion are effectively reduced, the desulfurization efficiency is improved, the energy consumption is reduced, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flue gas desulfurization technology, in particular to a desulfurization absorption tower spray layer anti-scouring and efficiency improving device and method and a desulfurization absorption tower. BACKGROUND

[0002] At present, the spray layer of the desulfurization absorption tower mostly adopts a'seat beam' structure, and the spray pipeline is directly seated on the support beam. This structure has the problems of serious slurry scouring of the spray main pipe, uneven arrangement of the nozzles, low desulfurization efficiency, high energy consumption, short equipment life and the like. For example, the absorption tower of a certain power plant once had the phenomena of main pipe breakage and branch pipe falling off, and the annual operation and maintenance cost was high, and the desulfurization efficiency was limited. SUMMARY

[0003] The present application aims to provide a desulfurization absorption tower spray layer anti-scouring and efficiency improving device and method and a desulfurization absorption tower, which realizes the goals of anti-scouring, efficiency improvement, energy consumption reduction and equipment life extension through structural innovation.

[0004] According to one object of the present application, the present application provides a desulfurization absorption tower spray layer anti-scouring and efficiency improving device, which comprises a support main beam, a support auxiliary beam, a spray main pipe, a spray branch pipe and a nozzle, a main pipe beam-penetrating round hole is formed in the support main beam, and the spray main pipe penetrates through the main pipe beam-penetrating round hole horizontally; the support auxiliary beam is located below the support main beam, and a U-shaped arc-pressing plate is arranged on the support auxiliary beam for supporting and fixing the spray branch pipe; a plurality of nozzles are arranged on the spray branch pipe, and all the nozzles are arranged on the same horizontal plane.

[0005] Further, the main pipe beam-penetrating round hole is matched with the outer diameter of the spray main pipe.

[0006] Further, a reinforcing plate is arranged between the U-shaped arc-pressing plate and the support auxiliary beam.

[0007] Further, the spray main pipe and the spray branch pipe are made of corrosion-resistant materials.

[0008] Further, the connection between the spray main pipe and the spray branch pipe is subjected to structural reinforcement treatment.

[0009] Further, the spray fan surface of the nozzle uniformly covers the cross section of the absorption tower, so as to avoid overlapping or blank areas.

[0010] Further, the support main beam and the support auxiliary beam are externally covered with a PP protective plate.

[0011] Further, the outer surface of the PP protective plate is subjected to glass flake corrosion prevention treatment.

[0012] According to another object of the present application, the present application provides a use method of the above-mentioned desulfurization absorption tower spray layer anti-scouring and efficiency improving device, which comprises the following steps: preparing a mother pipe through-beam round hole on the support main beam; preparing a U-shaped arc pressing plate installation position on the support auxiliary beam; passing the spray mother pipe through the mother pipe through-beam round hole; fixing the spray branch pipe on the U-shaped arc pressing plate; realizing the anti-scouring and efficiency improvement of the spray layer through the through-beam structure and the horizontal nozzle arrangement.

[0013] According to a third purpose of the present application, the present application provides a desulfurization absorption tower comprising the above-mentioned spray layer anti-scouring and efficiency improvement device.

[0014] The technical scheme of the present application innovates the traditional seat beam type support structure into a through-beam type structure, the spray mother pipe is horizontally passed through the round hole of the support main beam, direct contact between the pipe and the beam body is avoided, local stress concentration and slurry scouring are effectively eliminated, and the service life of the pipe is greatly prolonged; the support auxiliary beam cooperates with the U-shaped arc pressing plate to stably support the spray branch pipe, ensures that all nozzles are on the same horizontal plane, makes the spray fan uniformly cover the cross section of the absorption tower, and there is no overlapping or blank area, and the desulfurization efficiency and reaction uniformity are significantly improved; in addition, the structure simplifies the support system, reduces the number of beam bodies and the shielding of the spray fan, and reduces the system resistance and energy consumption. The overall structure is reasonable, convenient to install, has good anti-scouring, efficiency improvement, energy saving and equipment life extension comprehensive advantages. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the specific embodiments or prior art of the present application, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0016] Figure 1 It is a three-dimensional schematic view of the through-beam type support system of the embodiment of the present application; Figure 2 It is a side view of the through-beam type support beam of the embodiment of the present application; Figure 3 It is a general layout of the arrangement structure of the embodiment of the present application; Figure 4 It is a schematic view of the nozzle angle of the embodiment of the present application; Figure 5 It is a schematic view of the nozzle coverage range of the embodiment of the present application.

[0017] In the drawings: 1, support main beam; 2, support auxiliary beam; 3, mother pipe through-beam round hole; 4, U-shaped arc pressing plate; 5, spray mother pipe; 6, spray branch pipe; 7, nozzle. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Example 1 like Figures 1-5 As shown, a device for preventing erosion and improving efficiency of the spray layer in a desulfurization absorption tower includes a main supporting beam 1, an auxiliary supporting beam 2, a main spray pipe 5, branch spray pipes 6, and nozzles 7, wherein: The main support beam 1 has a through hole 3 for the spray pipe 5 to pass through. The through hole 3 matches the outer diameter of the spray pipe 5 to ensure that the spray pipe 5 passes through horizontally.

[0022] The auxiliary support beam 2 is located below the main support beam 1, and several U-shaped pressure plates 4 are provided above the auxiliary support beam 2. The U-shaped pressure plates 4 are used to support and fix the sprinkler branch pipes 6. A reinforcing plate is provided between the U-shaped pressure plates 4 and the auxiliary support beam 2.

[0023] The main spray pipe 5 and the branch spray pipe 6 are made of corrosion-resistant material. The connection between the main spray pipe 5 and the branch spray pipe 6 is structurally reinforced. Several nozzles 7 are provided on the branch spray pipe 6. The nozzles 7 are arranged on the same horizontal plane, and the spray fan of the nozzles 7 evenly covers the cross section of the absorption tower.

[0024] In this embodiment, each spray layer is equipped with 264 to 266 nozzles. The nozzles are horizontal to the main spray pipe, and all nozzles are located on the same horizontal plane. The spray fan evenly covers the cross section inside the tower, avoiding overlapping or blank areas.

[0025] This invention redesigns the layout of the spray layer support beams and pipes, changing the "beam-supported mode" to a "through-beam mode." The main support beam adopts an integral through-beam structure, with circular holes on the main beam matching the main spray pipe. The main spray pipe passes through these holes, ensuring the main beam and main pipe remain horizontal and parallel, avoiding localized stress and scouring caused by direct contact between the pipe and the beam. The auxiliary support beams are slightly lowered, with U-shaped pressure plates and reinforcing plates arranged on top to support the spray branch pipes, ensuring the branch pipes are stable and remain at the same horizontal plane as the main spray pipe. The number of support beams is reduced: through strength calculations, the layout of the support beams is simplified, reducing the obstruction of the spray fan surface by the beams.

[0026] In this embodiment, the main supporting beam 1 and the auxiliary supporting beam 2 are covered with PP protective plates, and the outer surface of the PP protective plates is treated with glass flake anti-corrosion. An additional paint anti-corrosion layer is added to the external pipelines to improve the equipment's weather resistance.

[0027] The method of using the above-mentioned anti-erosion and efficiency-enhancing device for the spray layer of the desulfurization absorption tower includes the following steps: Pre-fabricate the through-beam circular holes 3 for the main support beam 1; Install the U-shaped arc-shaped plate 4 on the supporting auxiliary beam 2; Pass the spray header 5 through the header through hole 3 of the main support beam 1; Fix the spray branch pipe 6 onto the U-shaped arc-pressing plate 4; The spray layer of the desulfurization absorption tower is protected against erosion through a through-beam structure and horizontal nozzle arrangement.

[0028] This embodiment also provides a desulfurization absorption tower, which includes the above-mentioned spray layer device.

[0029] This invention discloses a device for preventing erosion and improving efficiency of the spray layer in a desulfurization absorption tower. A main support beam 1 has a through-beam circular hole 3 for the main spray pipe 5, which passes through to avoid direct contact. A U-shaped arc-pressing plate 4 is installed above the auxiliary support beam 2 to fix the spray branch pipe 6. All nozzles 7 are arranged on the same horizontal plane, and the spray pattern evenly covers the tower cross-section. The support beam is covered with a PP protective plate and treated with glass flake corrosion protection.

[0030] In practical application at the No. 3 absorption tower of Datang Chaozhou Power Plant, this structure significantly improved the desulfurization efficiency to 98.9%, saved 3.54 million kWh of electricity per year, reduced the plant's power consumption rate to 0.96%, and extended the pipeline life to more than 8 years.

[0031] This invention changes the "beam-type" structure to a "through-beam type" structure, with a circular hole in the main beam for the spray header pipe to pass through; the auxiliary beam is lowered and a U-shaped pressure plate is installed to fix the spray branch pipe; all nozzles are located on the same horizontal plane, and the spray fan surface is evenly covered; the support beam is wrapped with PP protective plate and treated with glass flake anti-corrosion.

[0032] This invention employs a through-beam structure with a matching design between the openings in the main support beam and the main spray pipe, ensuring no stress concentration when the pipe passes through and preventing the spray fan from scouring the beam and pipe. It utilizes a horizontal spray system with a horizontal positioning structure for the nozzles, main spray pipe, and branch pipes, ensuring uniform coverage of the spray fan. A U-shaped pressure plate on the auxiliary beam is used to fix the branch pipes, balancing stability and buffering to reduce vibration and wear. Furthermore, this invention features an integrated anti-corrosion design, with anti-corrosion treatment completed during factory prefabrication of the support beam, reducing on-site construction steps and improving anti-corrosion quality.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for preventing erosion and improving efficiency of the spray layer in a desulfurization absorption tower, characterized in that, The system includes a main support beam, a secondary support beam, a main spray pipe, branch spray pipes, and nozzles. The main support beam has a through-beam hole for the main spray pipe, which passes horizontally through the hole. The secondary support beam is located below the main support beam and has a U-shaped pressure plate to support and fix the branch spray pipes. The branch spray pipes have multiple nozzles arranged on the same horizontal plane.

2. The anti-erosion and efficiency-enhancing device for the spray layer of the desulfurization absorption tower according to claim 1, characterized in that, The through-beam circular hole of the main pipe matches the outer diameter of the spray main pipe.

3. The anti-erosion and efficiency-enhancing device for the spray layer of the desulfurization absorption tower according to claim 1 or 2, characterized in that, A reinforcing plate is provided between the U-shaped pressure plate and the supporting auxiliary beam.

4. The anti-erosion and efficiency-enhancing device for the spray layer of the desulfurization absorption tower according to claim 1, characterized in that, The main spray pipe and the branch spray pipes are made of corrosion-resistant materials.

5. The anti-erosion and efficiency-enhancing device for the spray layer of the desulfurization absorption tower according to claim 1 or 4, characterized in that, The connection between the main spray pipe and the branch spray pipe is structurally reinforced.

6. The anti-erosion and efficiency-enhancing device for the spray layer of the desulfurization absorption tower according to claim 1, characterized in that, The spray pattern of the nozzle evenly covers the cross-section of the absorption tower, avoiding overlapping or blank areas.

7. The anti-erosion and efficiency-enhancing device for the spray layer of the desulfurization absorption tower according to claim 1, characterized in that, The main supporting beam and the auxiliary supporting beam are covered with PP protective plates.

8. The anti-erosion and efficiency-enhancing device for the spray layer of the desulfurization absorption tower according to claim 7, characterized in that, The outer surface of the PP protective plate is treated with glass flake anti-corrosion.

9. A method of using the anti-erosion and efficiency-enhancing device for the spray layer of a desulfurization absorption tower as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Pre-drill through-beam holes for the main support beam; Prefabricate the U-shaped arc-shaped plate installation position on the supporting auxiliary beam; Pass the main spray pipe through the circular hole in the main pipe beam; Fix the sprinkler branch pipes to the U-shaped arc plate; The spray layer is protected against erosion and its efficiency is improved by using a through-beam structure and horizontal nozzle arrangement.

10. A desulfurization absorption tower, characterized in that, It includes the anti-erosion and efficiency-enhancing device for the spray layer of the desulfurization absorption tower as described in any one of claims 1 to 8.

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