WO2019150696A1 - Spray pipe and desulfurizing device - Google Patents

Spray pipe and desulfurizing device Download PDF

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Publication number
WO2019150696A1
WO2019150696A1 PCT/JP2018/041717 JP2018041717W WO2019150696A1 WO 2019150696 A1 WO2019150696 A1 WO 2019150696A1 JP 2018041717 W JP2018041717 W JP 2018041717W WO 2019150696 A1 WO2019150696 A1 WO 2019150696A1
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WO
WIPO (PCT)
Prior art keywords
pipe
nozzle
outer peripheral
peripheral surface
nozzle holder
Prior art date
Application number
PCT/JP2018/041717
Other languages
French (fr)
Japanese (ja)
Inventor
開理 山田
直之 善積
剛之 宮地
哲 牛久
拓郎 添田
晴治 香川
直行 神山
隆士 吉山
Original Assignee
三菱日立パワーシステムズ株式会社
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Publication date
Application filed by 三菱日立パワーシステムズ株式会社 filed Critical 三菱日立パワーシステムズ株式会社
Priority to KR1020207022001A priority Critical patent/KR20200101978A/en
Publication of WO2019150696A1 publication Critical patent/WO2019150696A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor

Definitions

  • This disclosure relates to a spray pipe and a desulfurization apparatus.
  • exhaust gas combustion exhaust gas
  • SO 2 sulfur dioxide
  • SOx sulfur dioxide
  • a desulfurization method for flue gas desulfurization equipment that performs such desulfurization treatment there is known a liquid column type flue gas desulfurization device that performs desulfurization by making gas-liquid contact between absorption liquid such as seawater and limestone slurry and exhaust gas inside the desulfurization tower. It has been.
  • Liquid column type flue gas desulfurization equipment installs a plurality of spray pipes inside an absorption tower, blows up the absorbing liquid from a plurality of nozzles, and makes the desorbing gas and liquid contact the falling absorbing liquid and exhaust gas. To do.
  • a plurality of nozzle portions are attached upward on the upper surface of a pipe portion installed in the horizontal direction.
  • the absorbing liquid ejected from the nozzle portion becomes a rod-shaped water column having a substantially circular cross section, and is ejected to a liquid column height determined according to pump performance, piping pressure loss, and the like. In the vicinity of the top of the rod-shaped water column, the absorbing liquid falls after being dispersed from the center toward the outer peripheral direction.
  • Patent Document 1 a technique relating to a nozzle used in an absorption tower of a flue gas desulfurization apparatus is disclosed.
  • the nozzle portion provided in the spray pipe of the flue gas desulfurization apparatus is fixed in a liquid-tight manner with a plurality of bolts and nuts sandwiched between the flanges formed on the pipe portion and a gasket therebetween.
  • the bolts and nuts employ a high-grade metal having corrosion resistance, and there is a problem that the manufacturing cost of the spray pipe increases.
  • bolts and nuts with a uniform torque for every nozzle part is required, and time and an effort are required in the nozzle attachment process which attaches many nozzle parts to a pipe part.
  • the nozzle holder and the mounting cap are provided instead of the bolts and nuts described above, the nozzle is installed in the nozzle holder, and the mounting cap is screwed to the nozzle holder, so that the gasket is interposed therebetween. Insert the nozzle and fix the nozzle liquid tightly to the pipe.
  • this fixing method it is necessary to strictly manage the tightening torque of the mounting cap during construction. Furthermore, it is necessary to form a female screw on the inner peripheral surface of the mounting cap and a male screw on the outer peripheral surface of the nozzle holder, which takes time and effort for processing. Further, in this configuration, when the operation of the desulfurization apparatus is continued, there is a possibility that the fastening of the mounting cap may be loosened due to vibration or the like, and the nozzle cannot be stably fixed to the pipe.
  • the spray pipe and the desulfurization apparatus according to the present invention have been made in view of such circumstances, and an object thereof is to stably fix the nozzle portion to the pipe portion with a simple configuration.
  • a spray pipe includes a pipe portion in which a through hole is formed on an outer peripheral surface, a nozzle portion installed at a position corresponding to the through hole of the pipe portion, and the pipe portion.
  • An outer peripheral surface of the pipe portion and a covering portion installed so as to cover the outer peripheral surface of the nozzle portion are provided over both of the nozzle portions.
  • the nozzle portion is installed at a position corresponding to the through hole formed on the outer peripheral surface of the pipe portion, and the liquid or slurry flowing through the pipe portion is ejected from the nozzle portion.
  • the pipe part and the nozzle part are installed so that the covering part covers the outer peripheral surface of the pipe part and the outer peripheral surface of the nozzle part over both the pipe part and the nozzle part.
  • the pipe part and the nozzle part are integrated, and the nozzle part is stably fixed to the pipe part.
  • the nozzle portion is fixed to the pipe portion with a simple configuration without using metal fittings such as bolts and nuts.
  • the pipe portion is a pipe that is a cylindrical member, and a nozzle holder that is provided so as to protrude radially on the outer peripheral surface of the pipe at a position corresponding to the through-hole formed in the pipe.
  • the covering portion may be installed so as to cover the outer peripheral surface of the nozzle holder and the outer peripheral surface of the nozzle portion over the nozzle holder and the nozzle portion.
  • the nozzle holder is provided so as to protrude in the radial direction on the outer peripheral surface of the pipe.
  • the covering portion is installed so as to cover the outer peripheral surface of the nozzle holder and the outer peripheral surface of the nozzle portion over the nozzle holder and the nozzle portion.
  • the covering portion is installed not only to cover the nozzle holder and the nozzle portion but also to cover the outer peripheral surface of the pipe, the outer peripheral surface of the nozzle holder, and the outer peripheral surface of the nozzle portion over the pipe. Also good.
  • the pipe, the nozzle holder, and the nozzle portion are installed so that the covering portion covers the outer peripheral surface of the pipe, the outer peripheral surface of the nozzle holder, and the outer peripheral surface of the nozzle portion across the pipe, the nozzle holder, and the nozzle portion.
  • a pipe, a nozzle holder, and a nozzle part are integrated, and a nozzle part is stably fixed with respect to a pipe and a nozzle holder.
  • the nozzle portion is fixed to the pipe and the nozzle holder with a simple configuration without using metal fittings such as bolts and nuts.
  • the pipe portion may be made of fiber reinforced plastic (FRP), and the covering portion may be formed of a material obtained by impregnating glass fiber with plastic.
  • FRP fiber reinforced plastic
  • the pipe part and the covering part are both made of fiber and resin and are of the same material, both are easy to be coupled, and the nozzle part is more stable and strong with respect to the pipe part. Fixed to.
  • the nozzle portion may be made of fiber reinforced plastic (FRP).
  • FRP fiber reinforced plastic
  • the nozzle part is a material made of fiber and resin, and the pipe part, the nozzle part and the covering part are the same material, so the pipe part and the covering part, and The nozzle part and the covering part are easily coupled, and the nozzle part is more stably and firmly fixed to the pipe part.
  • the nozzle portion may have a flange projecting radially on the outer peripheral surface.
  • the flange is formed to protrude in the radial direction on the outer peripheral surface of the nozzle portion, and the nozzle portion is supported by the pipe portion or the nozzle holder via the flange. Since the flange protrudes in the radial direction of the nozzle portion, the nozzle portion is not easily tilted by the flange and is stably supported.
  • the flange may be formed at an intermediate portion in the height direction of the nozzle portion.
  • the nozzle portion is supported via the flange with respect to the pipe portion or the nozzle holder at the intermediate portion in the height direction of the nozzle portion where the flange is formed.
  • the protruding height of the nozzle holder from the outer peripheral surface of the pipe portion may be 50 mm or more and 100 mm or less.
  • the protruding height of the nozzle portion can be set to 50 mm or more and 100 mm or less, and the protruding height can be kept low.
  • a desulfurization apparatus is provided on the installation surface of the spray pipe on the bottom surface side of the pipe portion in which the axial direction is installed in parallel to the horizontal direction with the spray pipe of the above embodiment.
  • a leg portion that supports the pipe portion, and the pipe portion is supported by the leg portion so that the bottom surface of the pipe portion is directly above the installation surface.
  • the nozzle portion can be stably fixed to the pipe portion with a simple configuration.
  • the desulfurization apparatus 100 includes an absorption tower 10, a spray pipe 20, a demister 30, a circulation pump 40, and the like.
  • the absorption tower 10 is a cylindrical casing that is formed to extend in the vertical direction and serves as an exhaust gas passage.
  • the absorption tower 10 guides the exhaust gas containing the sulfur oxide introduced from the exhaust gas introduction part 11 formed on the side surface upward in the vertical direction.
  • the absorption tower 10 discharges exhaust gas from the exhaust gas discharge part 12 formed above the vertical direction.
  • the spray pipe 20 is a tubular member arranged in parallel to the horizontal direction inside the absorption tower 10. As shown in FIG. 1, the spray pipe 20 discharges the absorbing liquid upward in the vertical direction. Thereby, the exhaust gas introduced from the exhaust gas introduction part 11 and the absorbing liquid come into gas-liquid contact.
  • the absorbing liquid is a liquid containing limestone, and sulfur oxides contained in the exhaust gas are removed inside the absorption tower 10 by the lime gypsum method.
  • the absorption liquid discharged from the spray pipe 20 is discharged upward, and then is dispersed inside the absorption tower 10 and collected at the bottom 13 of the absorption tower 10. The absorbent stored in the bottom 13 is supplied again to the spray pipe 20 by the circulation pump 40.
  • the absorbing liquid is not limited to a liquid containing limestone, but may be seawater.
  • the influence of the blockage and wear of the nozzle portion 22 is less than that of a liquid containing limestone. Therefore, even when the pipe 19 and the nozzle portion 22 are integrated by the covering portion 26 as in the present embodiment, since the replacement frequency of the nozzle portion 22 is small, problems are unlikely to occur.
  • the demister 30 is, for example, a folded plate demister, and removes the mist of the absorbing liquid generated inside the absorption tower 10 by physical collision.
  • a plurality of spray pipes 20 are installed inside the absorption tower 10 of the desulfurization apparatus 100.
  • the spray pipe 20 is inserted from the outside to the inside through an opening 14 formed on the side surface of the absorption tower 10 and installed at a predetermined position.
  • a plurality of (for example, five) spray pipes 20 are installed in the same plane. Further, a plurality of spray pipes 20 may be installed in multiple stages at different positions in the vertical direction.
  • the spray pipe 20 is provided with an attachment flange 24 and a supply port 25.
  • the attachment flange 24 is a member for attaching the spray pipe 20 to the opening 14 provided in the absorption tower 10.
  • the attachment flange 24 is attached to the opening 14 of the absorption tower 10 by a plurality of fasteners (not shown).
  • a manhole 15 is provided for workers to pass through.
  • the manhole 15 can also be used when bringing maintenance parts or the like from the outside to the inside of the absorption tower 10 or when carrying out used parts or the like from the inside of the absorption tower 10 to the outside.
  • the spray pipe 20 includes a pipe portion 21, a plurality of nozzle portions 22, a covering portion 26, a plurality of leg portions 27, and the like.
  • the pipe portion 21 includes, for example, a pipe 19 that is a linear cylindrical member, and a nozzle holder 23.
  • the material of the pipe 19 is not limited, but it is desirable that the material be the same quality as the covering portion 26.
  • the pipe 19 is made of, for example, fiber reinforced plastic (FRP).
  • FRP fiber reinforced plastic
  • a through hole 28 is formed on the outer peripheral surface of the pipe 19, and a nozzle holder 23 is installed at a position corresponding to the through hole 28.
  • a plurality of through holes 28 are formed along the tube axis direction of the pipe 19, for example, at equal intervals.
  • the through-hole 28 is installed on the upper surface of the pipe 19 and facing upward.
  • the length of the pipe 19 is, for example, 3 m or more and 20 m or less, and the outer diameter of the pipe 19 is, for example, 200 mm or more and 400 mm or less.
  • the size of the pipe 19 is not limited to these examples.
  • the absorbing liquid supplied from the supply port 25 on one end side of the pipe 19 circulates inside the pipe 19 and is supplied to a plurality of nozzle portions 22 provided in the nozzle holder 23.
  • the nozzle holder 23 is, for example, a cylindrical member, and is provided so as to protrude in the radial direction on the outer peripheral surface of the pipe 19 at a position corresponding to the through hole 28 of the pipe 19. One end of the nozzle holder 23 is connected to the pipe 19.
  • the nozzle holder 23 has an inner diameter that can accommodate the nozzle portion 22 therein, and the nozzle portion 22 is inserted from the other end side of the nozzle holder 23.
  • the nozzle holder 23 is installed on the upper surface of the pipe 19 and facing upward when the spray pipe 20 is arranged inside the absorption tower 10.
  • the material of the nozzle holder 23 is not limited, but is preferably the same material as the covering portion 26.
  • the nozzle holder 23 is made of, for example, fiber reinforced plastic (FRP).
  • FRP fiber reinforced plastic
  • the nozzle holder 23 is formed, for example, integrally with the pipe 19.
  • the nozzle part 22 is a cylindrical member, and a flow path parallel to the tube axis direction is formed inside.
  • the nozzle part 22 ejects the absorbing liquid supplied to the inside from the opening 22a on one end side to the outside from the opening 22b on the other end side.
  • the nozzle part 22 is inserted into the nozzle holder 23 described above and installed in the pipe part 21. Therefore, when the spray pipe 20 is disposed inside the absorption tower 10, the nozzle portion 22 is installed on the upper surface of the pipe portion 21 and facing upward.
  • the nozzle unit 22 guides the absorbing liquid upward in the vertical direction inside the absorption tower 10.
  • the absorbing liquid ejected from the nozzle portion 22 becomes a rod-shaped water column having a substantially circular cross section, and is ejected to a liquid column height determined according to pump performance, piping pressure loss, and the like. In the vicinity of the top of the rod-shaped water column, the absorbing liquid falls after being dispersed from the center toward the outer peripheral direction.
  • the material of the nozzle part 22 is not limited, but may be the same material as the covering part 26. When the nozzle part 22 and the covering part 26 are made of the same material, the nozzle part 22 and the covering part 26 are easily coupled, and the nozzle part 22 is fixed to the pipe part 21 more stably and firmly.
  • the nozzle portion 22 is made of, for example, fiber reinforced plastic (FRP).
  • the material of the nozzle portion 22 may be SiC (silicon carbide).
  • the outer peripheral surface of the nozzle part 22 is provided with a flange 31 that is perpendicular to the axial direction of the nozzle part 22 and protrudes in the radial direction.
  • the flange 31 is, for example, a ring-shaped plate member. As shown in FIG. 5, the flange 31 is provided, for example, at an intermediate portion in the height direction of the nozzle portion 22.
  • the flange 31 of the nozzle part 22 contacts the upper surface of the nozzle holder 23 in a state where a part (lower half part) of the nozzle part 22 is inserted into the nozzle holder 23.
  • the insertion position of the nozzle portion 22 is regulated by the flange 31 of the nozzle portion 22.
  • a flange 32 protruding in the radial direction of the nozzle holder 23 may be provided on the upper surface of the nozzle holder 23.
  • the flange 31 of the nozzle part 22 and the flange 32 of the nozzle holder 23 are parallel to each other and are in surface contact.
  • the protruding direction of the flange 32 of the nozzle holder 23 is parallel to the tube axis direction of the pipe 19.
  • the pipe 19, the nozzle holder 23, and the nozzle portion 22 have a covering portion 26 that extends across the pipe 19, the nozzle holder 23, and the nozzle portion 22. It is installed to cover the surface in a liquid-tight manner. Thereby, the pipe 19, the nozzle holder 23, and the nozzle portion 22 are integrated, and the nozzle portion 22 is stably fixed to the pipe portion 21. Further, the nozzle portion 22 is fixed to the pipe portion 21 with a simple configuration without using metal fittings such as bolts and nuts. Furthermore, the work of integrating the pipe portion 21 and the nozzle portion 22 with bolts and nuts at the site where the desulfurization apparatus 100 is installed can be omitted, and the cost can be reduced.
  • the nozzle portion 22 is covered. Even when the pulling force is applied, the pulling out is suppressed by the covering portion 26 bent along the flanges 31 and 32. Therefore, the pipe 19, the nozzle holder 23, and the nozzle part 22 can be fixed more firmly.
  • the covering portion 26 is formed of a material obtained by impregnating glass fiber with plastic. Since both the pipe part 21 and the covering part 26 are made of a fiber and a resin and are of the same material, both are easily combined. As a result, the nozzle portion 22 inserted into the nozzle holder 23 of the pipe portion 21 is more stably and firmly fixed to the pipe portion 21 via the covering portion 26.
  • a general technique performed using a material in which glass fiber is impregnated with plastic can be applied. For example, before the plastic is cured, the material is wound around the pipe 19, the nozzle holder 23, and the nozzle portion 22, or is cured after the material is applied.
  • the covering portion 26 covered by the above method integrates the pipe 19, the nozzle holder 23, and the nozzle portion 22.
  • the nozzle part 22 is fixed to the pipe part 21 stably and with a simple configuration.
  • this embodiment is not limited to when the coating
  • the pipe 19 is not provided with the covering portion 26, and in the nozzle holder 23 and the nozzle portion 22, the covering portion 26 extends over the nozzle holder 23 and the nozzle portion 22 and the outer peripheral surface of the nozzle holder 23 and the nozzle portion 22. It is installed so as to cover the outer peripheral surface.
  • the nozzle holder 23 and the nozzle part 22 are integrated, and the nozzle part 22 is stably fixed with respect to the nozzle holder 23 also in the modification shown in FIG.
  • the nozzle portion 22 is fixed to the nozzle holder 23 with a simple configuration without using metal fittings such as bolts and nuts.
  • the plurality of leg portions 27 are members disposed at the lower end portion of the pipe portion 21 as shown in FIG.
  • the leg portions 27 are arranged at a plurality of locations including the tip portion of the pipe portion 21.
  • the load of the pipe portion 21 is transmitted to the pipe support (support portion) 91, the support beam (support portion) 92, and the support beam (support portion) 93 through the plurality of leg portions 27.
  • the pipe support 91, the support beam 92, and the support beam 93 are members that support the spray pipe 20 installed inside the absorption tower 10.
  • the leg 27 is installed on an installation surface whose bottom surface is the upper surface of the pipe support 91, the support beam 92, or the support beam 93. Further, the upper end of the leg portion 27 is connected to, for example, the pipe 19 of the pipe portion 21. The height of the leg portion 27 is the height from the bottom surface of the leg portion 27 to the upper end of the leg portion 27.
  • the spray pipe 20 is inserted from the outside to the inside through the opening 14 formed on the side surface of the absorption tower 10 in a state where the leg portion 27 is installed on the pipe 19 and installed at a predetermined position.
  • the height of the leg portion 27 is set so that the bottom portion of the pipe portion 21 is close to the installation surface of the leg portion 27.
  • the width of the lowermost portion of the leg portion 27 is preferably the same as the diameter of the pipe 19 of the pipe portion 21 or larger than the diameter of the pipe 19.
  • the support beam 92 or the support beam 93 can be opened at a position further away from the pipe portion 21, Even when the height is low, the bolt which is a coupling means with the pipe support 91, the support beam 92, and the support beam 93 compared to the case where the width of the lowermost portion of the leg portion 27 is smaller than the diameter of the pipe 19.
  • the operation of fastening 33 and nut 34 is easy to perform.
  • the overhang length of the flange 31 of the nozzle part 22 is, for example, 10 mm or more and 30 mm or less.
  • the overhang length of the flange 31 needs to be, for example, 45 mm or more in consideration of the shaft thickness of the bolt.
  • the overhanging length of the flange 31 can be shortened.
  • the overhang length of the flange 32 of the nozzle holder 23 is equivalent to, for example, the overhang length of the flange 31 of the nozzle portion 22.
  • the protruding height of the nozzle holder 23 from the outer peripheral surface of the pipe 19 is, for example, 50 mm or more and 100 mm or less.
  • the protruding height of the nozzle holder 23 is set to 50 mm or more, the above-described covering portion 26 can be easily wound and applied to the nozzle holder 23.
  • the nozzle part 22 is securely fixed to the nozzle holder 23.
  • the spray pipe 20 is inserted from the outside to the inside through the opening 14 formed on the side surface of the absorption tower 10 and is installed at a predetermined position.
  • the protruding height of the nozzle holder 23 to 100 mm or less, the height of the opening 14 can be reduced, and a decrease in strength of the absorption tower 10 can be suppressed.
  • the nozzle holder 23 is provided in the pipe 19 in the pipe portion 21 , but the present disclosure is not limited to this example.
  • the nozzle holder 23 may not be provided on the pipe 19, and the nozzle portion 22 may be installed directly on the pipe 19.
  • the flange 31 of the nozzle portion 22 is provided not at the intermediate portion in the height direction of the nozzle portion 22 but at one end of the nozzle portion 22, and the flange 31 is installed along the outer peripheral surface of the pipe 19.
  • the pipe 19 and the nozzle portion 22 are provided with a covering portion 26 so as to cover the outer peripheral surface of the pipe 19 and the outer peripheral surface of the nozzle portion 22 over the pipe 19 and the nozzle portion 22.
  • the pipe 19 and the nozzle part 22 are integrated, and the nozzle part 22 is stably fixed with respect to the pipe 19.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)
  • Nozzles (AREA)

Abstract

An objective of the present invention is to provide: a spray pipe capable of stably fixing a nozzle part to a pipe part with a simple configuration; and a desulfurizing device. This spray pipe (20) is provided with: a pipe part (21) having a through-hole (28) in an outer peripheral surface thereof; a nozzle part (22) installed at a location corresponding to the through-hole (28) of the pipe part (21); and a covering part (26) installed to cover the outer peripheral surface of the pipe part (21) and an outer peripheral surface of the nozzle part (22) over both the pipe part (21) and the nozzle part (22).

Description

スプレイパイプ及び脱硫装置Spray pipe and desulfurization equipment
　本開示は、スプレイパイプ及び脱硫装置に関するものである。 This disclosure relates to a spray pipe and a desulfurization apparatus.
　従来、石炭や原油等を燃料とする発電プラントにおいて、ボイラから排出される燃焼排気ガス（以下、「排ガス」という。）は、排ガス中に含まれている二酸化硫黄（ＳＯ２）等の硫黄酸化物（ＳＯｘ）が除去されてから大気に放出される。このような脱硫処理を施す排煙脱硫装置の脱硫方式として、脱硫塔の内部で海水や石灰石スラリ等の吸収液と排ガスとを気液接触させて脱硫する液柱方式の排煙脱硫装置が知られている。 Conventionally, in a power plant using coal, crude oil or the like as fuel, combustion exhaust gas (hereinafter referred to as “exhaust gas”) discharged from a boiler is oxidized by sulfur oxide such as sulfur dioxide (SO 2 ) contained in the exhaust gas. The object (SOx) is removed and then released to the atmosphere. As a desulfurization method for flue gas desulfurization equipment that performs such desulfurization treatment, there is known a liquid column type flue gas desulfurization device that performs desulfurization by making gas-liquid contact between absorption liquid such as seawater and limestone slurry and exhaust gas inside the desulfurization tower. It has been.
　液柱方式の排煙脱硫装置は、吸収塔の内部に複数のスプレイパイプを設置して、複数のノズル部から吸収液を噴き上げ、落下してきた吸収液と排ガスとを気液接触させることによって脱硫する。ノズル部は、水平方向に設置されたパイプ部の上面に上向きに複数取り付けられている。ノズル部から噴出する吸収液は略円形断面の棒状水柱となり、ポンプ性能や配管圧損などに応じて定まる液柱高さまで噴き上げられる。そして、棒状水柱の頂上付近では、吸収液は中心から外周方向へ向けて分散した後に落下する。 Liquid column type flue gas desulfurization equipment installs a plurality of spray pipes inside an absorption tower, blows up the absorbing liquid from a plurality of nozzles, and makes the desorbing gas and liquid contact the falling absorbing liquid and exhaust gas. To do. A plurality of nozzle portions are attached upward on the upper surface of a pipe portion installed in the horizontal direction. The absorbing liquid ejected from the nozzle portion becomes a rod-shaped water column having a substantially circular cross section, and is ejected to a liquid column height determined according to pump performance, piping pressure loss, and the like. In the vicinity of the top of the rod-shaped water column, the absorbing liquid falls after being dispersed from the center toward the outer peripheral direction.
　下記の特許文献１では、排煙脱硫装置の吸収塔に用いられるノズルに関する技術が開示されている。 In the following Patent Document 1, a technique relating to a nozzle used in an absorption tower of a flue gas desulfurization apparatus is disclosed.
特開２０１２－１７９５３３号公報JP 2012-179533 A
　従来、排煙脱硫装置のスプレイパイプに設けられるノズル部は、パイプ部に形成されたフランジに対して複数組のボルト及びナットを用いて、ガスケットを間に挟み、液密に固定される。ボルト及びナットは、腐食を防止するため、耐食性を有する高級金属が採用されており、スプレイパイプの製造コストが高くなるという問題がある。また、ノズル部ごとに複数組のボルトとナットを均一なトルクで締め付ける作業が必要であり、多数のノズル部をパイプ部に取り付けるノズル取付工程において時間や手間がかかる。さらに、部品数が多いため、部品の管理が煩雑になるという問題もある。 Conventionally, the nozzle portion provided in the spray pipe of the flue gas desulfurization apparatus is fixed in a liquid-tight manner with a plurality of bolts and nuts sandwiched between the flanges formed on the pipe portion and a gasket therebetween. In order to prevent corrosion, the bolts and nuts employ a high-grade metal having corrosion resistance, and there is a problem that the manufacturing cost of the spray pipe increases. Moreover, the operation | work which fastens several sets of volt | bolts and nuts with a uniform torque for every nozzle part is required, and time and an effort are required in the nozzle attachment process which attaches many nozzle parts to a pipe part. Furthermore, since there are many parts, there also exists a problem that management of parts becomes complicated.
　上記の特許文献１では、上述したボルト及びナットによる固定ではなく、ノズルホルダと取付キャップを備え、ノズルをノズルホルダ内に設置し、取付キャップをノズルホルダに螺合することによって、ガスケットを間に挟み、ノズルをパイプに対して液密に固定する。しかし、この固定方法では、施工時に、取付キャップの締付けトルクを厳密に管理する必要がある。さらに、取付キャップの内周面に雌ねじを形成し、ノズルホルダの外周面に雄ねじを形成しておく必要があり、加工に手間や時間がかかる。また、この構成では、脱硫装置の運転を継続すると、取付キャップの締め付けが振動等によって緩むおそれがあり、ノズルをパイプに対して安定的に固定できなくなるという問題がある。 In the above-mentioned Patent Document 1, the nozzle holder and the mounting cap are provided instead of the bolts and nuts described above, the nozzle is installed in the nozzle holder, and the mounting cap is screwed to the nozzle holder, so that the gasket is interposed therebetween. Insert the nozzle and fix the nozzle liquid tightly to the pipe. However, with this fixing method, it is necessary to strictly manage the tightening torque of the mounting cap during construction. Furthermore, it is necessary to form a female screw on the inner peripheral surface of the mounting cap and a male screw on the outer peripheral surface of the nozzle holder, which takes time and effort for processing. Further, in this configuration, when the operation of the desulfurization apparatus is continued, there is a possibility that the fastening of the mounting cap may be loosened due to vibration or the like, and the nozzle cannot be stably fixed to the pipe.
　本発明に係るスプレイパイプ及び脱硫装置は、このような事情に鑑みてなされたものであって、簡易な構成でノズル部をパイプ部に対して安定的に固定することを目的とする。 The spray pipe and the desulfurization apparatus according to the present invention have been made in view of such circumstances, and an object thereof is to stably fix the nozzle portion to the pipe portion with a simple configuration.
　本開示の幾つかの実施形態に係るスプレイパイプは、外周面に貫通孔が形成されたパイプ部と、前記パイプ部の前記貫通孔に対応する位置に設置されるノズル部と、前記パイプ部と前記ノズル部の両方にわたって前記パイプ部の外周面と前記ノズル部の外周面を覆うように設置される被覆部とを備える。 A spray pipe according to some embodiments of the present disclosure includes a pipe portion in which a through hole is formed on an outer peripheral surface, a nozzle portion installed at a position corresponding to the through hole of the pipe portion, and the pipe portion. An outer peripheral surface of the pipe portion and a covering portion installed so as to cover the outer peripheral surface of the nozzle portion are provided over both of the nozzle portions.
　この構成によれば、パイプ部の外周面に形成された貫通孔に対応する位置に、ノズル部が設置されており、パイプ部を流通する液体又はスラリは、ノズル部から噴き出される。パイプ部とノズル部には、被覆部がパイプ部とノズル部の両方にわたってパイプ部の外周面とノズル部の外周面を覆うように設置される。これにより、パイプ部とノズル部が一体化されており、ノズル部がパイプ部に対して安定的に固定される。また、ボルト及びナット等の金具類を用いることなく、ノズル部がパイプ部に対して簡易な構成で固定される。 According to this configuration, the nozzle portion is installed at a position corresponding to the through hole formed on the outer peripheral surface of the pipe portion, and the liquid or slurry flowing through the pipe portion is ejected from the nozzle portion. The pipe part and the nozzle part are installed so that the covering part covers the outer peripheral surface of the pipe part and the outer peripheral surface of the nozzle part over both the pipe part and the nozzle part. Thereby, the pipe part and the nozzle part are integrated, and the nozzle part is stably fixed to the pipe part. Further, the nozzle portion is fixed to the pipe portion with a simple configuration without using metal fittings such as bolts and nuts.
　上記実施形態において、前記パイプ部は、円筒部材であるパイプと、前記パイプに形成された前記貫通孔に対応する位置において、前記パイプの外周面において径方向に突出するように設けられたノズルホルダと、を有し、前記被覆部は、前記ノズルホルダ及び前記ノズル部にわたって前記ノズルホルダの外周面及び前記ノズル部の外周面を覆うように設置されてもよい。 In the above-described embodiment, the pipe portion is a pipe that is a cylindrical member, and a nozzle holder that is provided so as to protrude radially on the outer peripheral surface of the pipe at a position corresponding to the through-hole formed in the pipe. The covering portion may be installed so as to cover the outer peripheral surface of the nozzle holder and the outer peripheral surface of the nozzle portion over the nozzle holder and the nozzle portion.
　この構成によれば、ノズルホルダが、パイプの外周面において径方向に突出するように設けられている。ノズルホルダ及びノズル部には、被覆部がノズルホルダ及びノズル部にわたってノズルホルダの外周面及びノズル部の外周面を覆うように設置される。これにより、ノズルホルダ及びノズル部が一体化されており、ノズル部がノズルホルダに対して安定的に固定される。また、ボルト及びナット等の金具類を用いることなく、ノズル部がノズルホルダに対して簡易な構成で固定される。 According to this configuration, the nozzle holder is provided so as to protrude in the radial direction on the outer peripheral surface of the pipe. In the nozzle holder and the nozzle portion, the covering portion is installed so as to cover the outer peripheral surface of the nozzle holder and the outer peripheral surface of the nozzle portion over the nozzle holder and the nozzle portion. Thereby, the nozzle holder and the nozzle part are integrated, and the nozzle part is stably fixed to the nozzle holder. Further, the nozzle part is fixed to the nozzle holder with a simple configuration without using metal fittings such as bolts and nuts.
　上記実施形態において、前記被覆部は、前記ノズルホルダ及び前記ノズル部だけでなく、前記パイプにわたって前記パイプの外周面、前記ノズルホルダの外周面及び前記ノズル部の外周面を覆うように設置されてもよい。 In the embodiment, the covering portion is installed not only to cover the nozzle holder and the nozzle portion but also to cover the outer peripheral surface of the pipe, the outer peripheral surface of the nozzle holder, and the outer peripheral surface of the nozzle portion over the pipe. Also good.
　この構成によれば、パイプとノズルホルダとノズル部には、被覆部がパイプとノズルホルダとノズル部にわたってパイプの外周面とノズルホルダの外周面とノズル部の外周面を覆うように設置される。これにより、パイプとノズルホルダとノズル部が一体化されており、ノズル部がパイプ及びノズルホルダに対して安定的に固定される。また、ボルト及びナット等の金具類を用いることなく、ノズル部がパイプ及びノズルホルダに対して簡易な構成で固定される。 According to this configuration, the pipe, the nozzle holder, and the nozzle portion are installed so that the covering portion covers the outer peripheral surface of the pipe, the outer peripheral surface of the nozzle holder, and the outer peripheral surface of the nozzle portion across the pipe, the nozzle holder, and the nozzle portion. . Thereby, a pipe, a nozzle holder, and a nozzle part are integrated, and a nozzle part is stably fixed with respect to a pipe and a nozzle holder. Further, the nozzle portion is fixed to the pipe and the nozzle holder with a simple configuration without using metal fittings such as bolts and nuts.
　上記実施形態において、前記パイプ部は、繊維強化プラスチック（ＦＲＰ）製であり、前記被覆部は、ガラス繊維にプラスチックを含浸した材料で形成されてもよい。 In the above embodiment, the pipe portion may be made of fiber reinforced plastic (FRP), and the covering portion may be formed of a material obtained by impregnating glass fiber with plastic.
　この構成によれば、パイプ部と被覆部は、いずれも繊維と樹脂からなる材料であって同質の材料であるため、両者が結合されやすく、ノズル部がパイプ部に対してより安定的かつ強固に固定される。 According to this configuration, since the pipe part and the covering part are both made of fiber and resin and are of the same material, both are easy to be coupled, and the nozzle part is more stable and strong with respect to the pipe part. Fixed to.
　上記実施形態において、前記ノズル部は、繊維強化プラスチック（ＦＲＰ）製でもよい。 In the above embodiment, the nozzle portion may be made of fiber reinforced plastic (FRP).
　この構成によれば、パイプ部と被覆部だけでなくノズル部も繊維と樹脂からなる材料であって、パイプ部、ノズル部及び被覆部が同質の材料であるため、パイプ部と被覆部、かつ、ノズル部と被覆部が結合されやすくなり、ノズル部がパイプ部に対してより安定的かつ強固に固定される。 According to this configuration, not only the pipe part and the covering part, but also the nozzle part is a material made of fiber and resin, and the pipe part, the nozzle part and the covering part are the same material, so the pipe part and the covering part, and The nozzle part and the covering part are easily coupled, and the nozzle part is more stably and firmly fixed to the pipe part.
　上記実施形態において、前記ノズル部は、外周面において径方向に突出したフランジを有してもよい。 In the above embodiment, the nozzle portion may have a flange projecting radially on the outer peripheral surface.
　この構成によれば、ノズル部の外周面には、フランジが径方向に突出して形成されており、ノズル部がパイプ部又はノズルホルダに対してフランジを介して支持される。フランジはノズル部の径方向に突出していることから、フランジによってノズル部が倒れにくくなり安定的に支持される。 According to this configuration, the flange is formed to protrude in the radial direction on the outer peripheral surface of the nozzle portion, and the nozzle portion is supported by the pipe portion or the nozzle holder via the flange. Since the flange protrudes in the radial direction of the nozzle portion, the nozzle portion is not easily tilted by the flange and is stably supported.
　上記実施形態において、前記フランジは、前記ノズル部の高さ方向の中間部に形成されてもよい。 In the above embodiment, the flange may be formed at an intermediate portion in the height direction of the nozzle portion.
　この構成によれば、ノズル部は、フランジが形成されているノズル部の高さ方向の中間部において、パイプ部またはノズルホルダに対してフランジを介して支持される。 According to this configuration, the nozzle portion is supported via the flange with respect to the pipe portion or the nozzle holder at the intermediate portion in the height direction of the nozzle portion where the flange is formed.
　上記実施形態において、前記パイプ部の外周面からの前記ノズルホルダの突出高さは、５０ｍｍ以上１００ｍｍ以下でもよい。 In the above embodiment, the protruding height of the nozzle holder from the outer peripheral surface of the pipe portion may be 50 mm or more and 100 mm or less.
　この構成によれば、ボルト及びナットによってノズル部をノズルホルダに固定する場合と異なり、ノズル部の突出高さを５０ｍｍ以上１００ｍｍ以下として、突出高さを低く抑えることができる。 According to this configuration, unlike the case where the nozzle portion is fixed to the nozzle holder with bolts and nuts, the protruding height of the nozzle portion can be set to 50 mm or more and 100 mm or less, and the protruding height can be kept low.
　本開示の他の実施形態に係る脱硫装置は、上記実施形態のスプレイパイプと、軸方向が水平方向に対して平行に設置された前記パイプ部の底面側において、前記スプレイパイプの設置面に設けられ、前記パイプ部を支持する脚部とを備え、前記パイプ部の前記底面が、前記設置面の直上となるように、前記脚部によって前記パイプ部が支持されている。 A desulfurization apparatus according to another embodiment of the present disclosure is provided on the installation surface of the spray pipe on the bottom surface side of the pipe portion in which the axial direction is installed in parallel to the horizontal direction with the spray pipe of the above embodiment. A leg portion that supports the pipe portion, and the pipe portion is supported by the leg portion so that the bottom surface of the pipe portion is directly above the installation surface.
　本開示によれば、簡易な構成でノズル部をパイプ部に対して安定的に固定することができる。 According to the present disclosure, the nozzle portion can be stably fixed to the pipe portion with a simple configuration.
本開示の一実施形態に係る脱硫装置の概略構成を示す縦断面図である。It is a longitudinal section showing a schematic structure of a desulfurization device concerning one embodiment of this indication. 図１に示す脱硫装置のスプレイパイプを示す側面図である。It is a side view which shows the spray pipe of the desulfurization apparatus shown in FIG. 図２に示すスプレイパイプを上方から見た平面図である。It is the top view which looked at the spray pipe shown in FIG. 2 from upper direction. 図２に示す脱硫装置のスプレイパイプを示すIV-IV線矢視図である。It is an IV-IV line arrow directional view which shows the spray pipe of the desulfurization apparatus shown in FIG. 本開示の一実施形態に係る脱硫装置のスプレイパイプを示す縦断面図である。It is a longitudinal cross-sectional view which shows the spray pipe of the desulfurization apparatus which concerns on one Embodiment of this indication. 本開示の一実施形態に係る脱硫装置のスプレイパイプ及び脚部を示す縦断面図である。It is a longitudinal cross-sectional view which shows the spray pipe and leg part of the desulfurization apparatus which concerns on one Embodiment of this indication. 本開示の一実施形態に係る脱硫装置のスプレイパイプの変形例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the modification of the spray pipe of the desulfurization apparatus which concerns on one Embodiment of this indication.
　以下に、本開示の一実施形態に係る脱硫装置１００について、図面を参照して説明する。
　図１に示すように、本実施形態の脱硫装置１００は、吸収塔１０と、スプレイパイプ２０と、デミスタ３０と、循環ポンプ４０などを備える。 Hereinafter, a desulfurization apparatus 100 according to an embodiment of the present disclosure will be described with reference to the drawings.
As shown in FIG. 1, the desulfurization apparatus 100 of this embodiment includes an absorption tower 10, a spray pipe 20, a demister 30, a circulation pump 40, and the like.
　吸収塔１０は、鉛直方向に延びるように形成されて排ガスの通路となる筒状のケーシングである。吸収塔１０は、側面に形成された排ガス導入部１１から導入された硫黄酸化物を含む排ガスを鉛直方向の上方へ導く。また、吸収塔１０は、鉛直方向の上方に形成された排ガス排出部１２から排ガスを排出する。 The absorption tower 10 is a cylindrical casing that is formed to extend in the vertical direction and serves as an exhaust gas passage. The absorption tower 10 guides the exhaust gas containing the sulfur oxide introduced from the exhaust gas introduction part 11 formed on the side surface upward in the vertical direction. Moreover, the absorption tower 10 discharges exhaust gas from the exhaust gas discharge part 12 formed above the vertical direction.
　スプレイパイプ２０は、吸収塔１０の内部において、水平方向に対して平行に配置される管状部材である。図１に示すように、スプレイパイプ２０は、吸収液を鉛直方向の上方に向けて吐出する。これにより、排ガス導入部１１から導入された排ガスと吸収液が気液接触する。ここで、吸収液は、石灰石を含む液体であり、吸収塔１０の内部で、石灰石膏法によって、排ガスに含まれる硫黄酸化物が除去される。スプレイパイプ２０から吐出された吸収液は、上方に向けて吐出された後、吸収塔１０の内部で分散し、吸収塔１０の底部１３に溜まる。底部１３に溜まった吸収液は、循環ポンプ４０によってスプレイパイプ２０へ再び供給される。 The spray pipe 20 is a tubular member arranged in parallel to the horizontal direction inside the absorption tower 10. As shown in FIG. 1, the spray pipe 20 discharges the absorbing liquid upward in the vertical direction. Thereby, the exhaust gas introduced from the exhaust gas introduction part 11 and the absorbing liquid come into gas-liquid contact. Here, the absorbing liquid is a liquid containing limestone, and sulfur oxides contained in the exhaust gas are removed inside the absorption tower 10 by the lime gypsum method. The absorption liquid discharged from the spray pipe 20 is discharged upward, and then is dispersed inside the absorption tower 10 and collected at the bottom 13 of the absorption tower 10. The absorbent stored in the bottom 13 is supplied again to the spray pipe 20 by the circulation pump 40.
　なお、吸収液は、石灰石を含む液体に限定されず、海水でもよい。海水を流通させる場合、石灰石を含む液体に比べて、ノズル部２２の閉塞や摩耗の影響が少ない。そのため、本実施形態のように、被覆部２６によってパイプ１９とノズル部２２を一体化する場合であっても、ノズル部２２の交換頻度が少ないため、支障が生じにくい。 In addition, the absorbing liquid is not limited to a liquid containing limestone, but may be seawater. When circulating seawater, the influence of the blockage and wear of the nozzle portion 22 is less than that of a liquid containing limestone. Therefore, even when the pipe 19 and the nozzle portion 22 are integrated by the covering portion 26 as in the present embodiment, since the replacement frequency of the nozzle portion 22 is small, problems are unlikely to occur.
　デミスタ３０は、例えば折れ板型デミスタであり、吸収塔１０の内部で発生した吸収液のミストを物理的衝突によって除去するものである。 The demister 30 is, for example, a folded plate demister, and removes the mist of the absorbing liquid generated inside the absorption tower 10 by physical collision.
　次に、本実施形態の脱硫装置１００が備えるスプレイパイプ２０について詳細に説明する。
　スプレイパイプ２０は、図２及び図３に示すように、脱硫装置１００の吸収塔１０の内部に複数本設置される。スプレイパイプ２０は、吸収塔１０の側面に形成された開口部１４を介して、外部から内部へ挿入されて所定の位置に設置される。スプレイパイプ２０は、同一平面内に複数本（例えば５本）設置される。また、スプレイパイプ２０は、鉛直方向の異なる位置にそれぞれ複数本ずつ複数段で設置されてもよい。 Next, the spray pipe 20 provided in the desulfurization apparatus 100 of the present embodiment will be described in detail.
As shown in FIGS. 2 and 3, a plurality of spray pipes 20 are installed inside the absorption tower 10 of the desulfurization apparatus 100. The spray pipe 20 is inserted from the outside to the inside through an opening 14 formed on the side surface of the absorption tower 10 and installed at a predetermined position. A plurality of (for example, five) spray pipes 20 are installed in the same plane. Further, a plurality of spray pipes 20 may be installed in multiple stages at different positions in the vertical direction.
　図２及び図３に示すように、スプレイパイプ２０には、取付フランジ２４と供給口２５とが設けられている。取付フランジ２４は、スプレイパイプ２０を吸収塔１０に設けられた開口部１４に取り付けるための部材である。取付フランジ２４は、複数の締結具（図示略）によって吸収塔１０の開口部１４に取り付けられる。 As shown in FIGS. 2 and 3, the spray pipe 20 is provided with an attachment flange 24 and a supply port 25. The attachment flange 24 is a member for attaching the spray pipe 20 to the opening 14 provided in the absorption tower 10. The attachment flange 24 is attached to the opening 14 of the absorption tower 10 by a plurality of fasteners (not shown).
　吸収塔１０の側面には、作業者が通り抜けるためのマンホール１５が設けられている。マンホール１５は、吸収塔１０の外部から内部へ保守用の部品等を持ち込む場合や、吸収塔１０の内部から外部へ使用済みの部品等を運び出す場合にも利用可能である。 On the side of the absorption tower 10, a manhole 15 is provided for workers to pass through. The manhole 15 can also be used when bringing maintenance parts or the like from the outside to the inside of the absorption tower 10 or when carrying out used parts or the like from the inside of the absorption tower 10 to the outside.
　図４及び図５に示すように、スプレイパイプ２０は、パイプ部２１と、複数のノズル部２２と、被覆部２６と、複数の脚部２７などを有する。 4 and 5, the spray pipe 20 includes a pipe portion 21, a plurality of nozzle portions 22, a covering portion 26, a plurality of leg portions 27, and the like.
　パイプ部２１は、例えば直線状の円筒部材であるパイプ１９と、ノズルホルダ２３とを有する。パイプ１９の材料は限定されないが、被覆部２６と同質の材料であることが望ましい。パイプ１９は、例えば繊維強化プラスチック（ＦＲＰ）製である。パイプ１９の一端側は、吸収液が供給されるように開口された供給口２５が形成されており、パイプ１９の他端側は閉塞されている。 The pipe portion 21 includes, for example, a pipe 19 that is a linear cylindrical member, and a nozzle holder 23. The material of the pipe 19 is not limited, but it is desirable that the material be the same quality as the covering portion 26. The pipe 19 is made of, for example, fiber reinforced plastic (FRP). One end side of the pipe 19 is formed with a supply port 25 that is opened to supply the absorbing liquid, and the other end side of the pipe 19 is closed.
　図５に示すように、パイプ１９の外周面には貫通孔２８が形成され、貫通孔２８に対応する位置にノズルホルダ２３が設置される。貫通孔２８は、パイプ１９の管軸方向に沿って、例えば等間隔に、複数形成される。貫通孔２８は、スプレイパイプ２０が吸収塔１０の内部に配置されたとき、パイプ１９の上面に位置し、かつ、上向きとなるように設置される。 As shown in FIG. 5, a through hole 28 is formed on the outer peripheral surface of the pipe 19, and a nozzle holder 23 is installed at a position corresponding to the through hole 28. A plurality of through holes 28 are formed along the tube axis direction of the pipe 19, for example, at equal intervals. When the spray pipe 20 is disposed inside the absorption tower 10, the through-hole 28 is installed on the upper surface of the pipe 19 and facing upward.
　パイプ１９の長さは、例えば３ｍ以上２０ｍ以下であり、パイプ１９の外径は、例えば２００ｍｍ以上４００ｍｍ以下である。なお、パイプ１９のサイズは、これらの例に限定されない。 The length of the pipe 19 is, for example, 3 m or more and 20 m or less, and the outer diameter of the pipe 19 is, for example, 200 mm or more and 400 mm or less. The size of the pipe 19 is not limited to these examples.
　パイプ１９の一端側の供給口２５から供給された吸収液は、パイプ１９の内部を流通し、ノズルホルダ２３に設けられた複数のノズル部２２へ供給される。 The absorbing liquid supplied from the supply port 25 on one end side of the pipe 19 circulates inside the pipe 19 and is supplied to a plurality of nozzle portions 22 provided in the nozzle holder 23.
　ノズルホルダ２３は、例えば、円筒状部材であり、パイプ１９の貫通孔２８に対応する位置において、パイプ１９の外周面において径方向に突出するように設けられる。ノズルホルダ２３は、一端側がパイプ１９と接続されている。ノズルホルダ２３は、ノズル部２２を内部に収容可能な内径を有しており、ノズルホルダ２３の他端側からノズル部２２が挿入される。ノズルホルダ２３は、スプレイパイプ２０が吸収塔１０の内部に配置されたとき、パイプ１９の上面に位置し、かつ、上向きとなるように設置される。 The nozzle holder 23 is, for example, a cylindrical member, and is provided so as to protrude in the radial direction on the outer peripheral surface of the pipe 19 at a position corresponding to the through hole 28 of the pipe 19. One end of the nozzle holder 23 is connected to the pipe 19. The nozzle holder 23 has an inner diameter that can accommodate the nozzle portion 22 therein, and the nozzle portion 22 is inserted from the other end side of the nozzle holder 23. The nozzle holder 23 is installed on the upper surface of the pipe 19 and facing upward when the spray pipe 20 is arranged inside the absorption tower 10.
　ノズルホルダ２３の材料は限定されないが、被覆部２６と同質の材料であることが望ましい。ノズルホルダ２３は、例えば繊維強化プラスチック（ＦＲＰ）製である。ノズルホルダ２３は、例えば、パイプ１９と一体成形されて形成される。 The material of the nozzle holder 23 is not limited, but is preferably the same material as the covering portion 26. The nozzle holder 23 is made of, for example, fiber reinforced plastic (FRP). The nozzle holder 23 is formed, for example, integrally with the pipe 19.
　ノズル部２２は、円筒状部材であり、内部において管軸方向に対して平行な流路が形成されている。ノズル部２２は、一端側の開口２２ａから内部に供給された吸収液を、他端側の開口２２ｂから外部へ噴出させる。 The nozzle part 22 is a cylindrical member, and a flow path parallel to the tube axis direction is formed inside. The nozzle part 22 ejects the absorbing liquid supplied to the inside from the opening 22a on one end side to the outside from the opening 22b on the other end side.
　ノズル部２２は、上述したノズルホルダ２３に挿入されてパイプ部２１に設置される。したがって、ノズル部２２は、スプレイパイプ２０が吸収塔１０の内部に配置されたとき、パイプ部２１の上面に位置し、かつ、上向きとなるように設置される。ノズル部２２は、吸収塔１０の内部において、吸収液を鉛直方向の上方へ導く。ノズル部２２から噴出する吸収液は略円形断面の棒状水柱となり、ポンプ性能や配管圧損などに応じて定まる液柱高さまで噴き上げられる。そして、棒状水柱の頂上付近では、吸収液は中心から外周方向へ向けて分散した後に落下する。 The nozzle part 22 is inserted into the nozzle holder 23 described above and installed in the pipe part 21. Therefore, when the spray pipe 20 is disposed inside the absorption tower 10, the nozzle portion 22 is installed on the upper surface of the pipe portion 21 and facing upward. The nozzle unit 22 guides the absorbing liquid upward in the vertical direction inside the absorption tower 10. The absorbing liquid ejected from the nozzle portion 22 becomes a rod-shaped water column having a substantially circular cross section, and is ejected to a liquid column height determined according to pump performance, piping pressure loss, and the like. In the vicinity of the top of the rod-shaped water column, the absorbing liquid falls after being dispersed from the center toward the outer peripheral direction.
　ノズル部２２の材料は限定されないが、被覆部２６と同質の材料であるとよい。ノズル部２２及び被覆部２６が同質の材料である場合、ノズル部２２と被覆部２６が結合されやすくなり、ノズル部２２がパイプ部２１に対してより安定的かつ強固に固定される。ノズル部２２は、例えば繊維強化プラスチック（ＦＲＰ）製である。なお、ノズル部２２の材料は、ＳｉＣ（シリコンカーバイド）などでもよい。 The material of the nozzle part 22 is not limited, but may be the same material as the covering part 26. When the nozzle part 22 and the covering part 26 are made of the same material, the nozzle part 22 and the covering part 26 are easily coupled, and the nozzle part 22 is fixed to the pipe part 21 more stably and firmly. The nozzle portion 22 is made of, for example, fiber reinforced plastic (FRP). The material of the nozzle portion 22 may be SiC (silicon carbide).
　ノズル部２２の外周面には、ノズル部２２の軸方向に対して垂直であり、かつ、径方向に突出したフランジ３１が設けられている。フランジ３１は、例えばリング状の板状部材である。フランジ３１は、図５に示すように、例えばノズル部２２の高さ方向の中間部に設けられる。ノズル部２２のフランジ３１は、ノズル部２２の一部（下半部）がノズルホルダ２３に挿入された状態で、ノズルホルダ２３の上面と当接する。ノズル部２２のフランジ３１によって、ノズル部２２の挿入位置が規制される。 The outer peripheral surface of the nozzle part 22 is provided with a flange 31 that is perpendicular to the axial direction of the nozzle part 22 and protrudes in the radial direction. The flange 31 is, for example, a ring-shaped plate member. As shown in FIG. 5, the flange 31 is provided, for example, at an intermediate portion in the height direction of the nozzle portion 22. The flange 31 of the nozzle part 22 contacts the upper surface of the nozzle holder 23 in a state where a part (lower half part) of the nozzle part 22 is inserted into the nozzle holder 23. The insertion position of the nozzle portion 22 is regulated by the flange 31 of the nozzle portion 22.
　ノズルホルダ２３の上面には、ノズルホルダ２３の径方向に突出したフランジ３２が設けられてもよい。ノズル部２２のフランジ３１とノズルホルダ２３のフランジ３２は、互いに平行であり面接触する。ノズルホルダ２３のフランジ３２の突出方向は、パイプ１９の管軸方向に対して平行である。これにより、ノズル部２２がノズルホルダ２３に挿入されて、ノズル部２２のフランジ３１とノズルホルダ２３のフランジ３２を面接触させたとき、ノズル部２２の管軸方向がパイプ１９に対して垂直になる。したがって、ノズル部２２の設置方向を決定しやすい。 A flange 32 protruding in the radial direction of the nozzle holder 23 may be provided on the upper surface of the nozzle holder 23. The flange 31 of the nozzle part 22 and the flange 32 of the nozzle holder 23 are parallel to each other and are in surface contact. The protruding direction of the flange 32 of the nozzle holder 23 is parallel to the tube axis direction of the pipe 19. Thus, when the nozzle portion 22 is inserted into the nozzle holder 23 and the flange 31 of the nozzle portion 22 and the flange 32 of the nozzle holder 23 are brought into surface contact, the tube axis direction of the nozzle portion 22 is perpendicular to the pipe 19. Become. Therefore, it is easy to determine the installation direction of the nozzle part 22.
　図５に示すように、パイプ１９とノズルホルダ２３とノズル部２２には、被覆部２６がパイプ１９とノズルホルダ２３とノズル部２２にわたってパイプ１９の外周面とノズルホルダ２３及びノズル部２２の外周面を液密に覆うように設置される。これにより、パイプ１９とノズルホルダ２３とノズル部２２が一体化されており、ノズル部２２がパイプ部２１に対して安定的に固定される。また、ボルト及びナット等の金具類を用いることなく、ノズル部２２がパイプ部２１に対して簡易な構成で固定される。さらに、脱硫装置１００が設置された現地で、ボルト及びナットによってパイプ部２１とノズル部２２を一体化させる作業を省略することができ、コスト削減が可能になる。 As shown in FIG. 5, the pipe 19, the nozzle holder 23, and the nozzle portion 22 have a covering portion 26 that extends across the pipe 19, the nozzle holder 23, and the nozzle portion 22. It is installed to cover the surface in a liquid-tight manner. Thereby, the pipe 19, the nozzle holder 23, and the nozzle portion 22 are integrated, and the nozzle portion 22 is stably fixed to the pipe portion 21. Further, the nozzle portion 22 is fixed to the pipe portion 21 with a simple configuration without using metal fittings such as bolts and nuts. Furthermore, the work of integrating the pipe portion 21 and the nozzle portion 22 with bolts and nuts at the site where the desulfurization apparatus 100 is installed can be omitted, and the cost can be reduced.
　また、特にフランジ３１及び３２が形成されている場合、ノズル部２２のフランジ３１とノズルホルダ２３のフランジ３２を面接触させた状態で外周面を被覆部２６が覆うと、ノズル部２２に対して引抜力が作用しても、フランジ３１及び３２に沿って屈曲した被覆部２６によって引き抜きが抑制される。そのため、パイプ１９とノズルホルダ２３とノズル部２２を更に強固に固定できる。 In particular, when the flanges 31 and 32 are formed, when the outer peripheral surface is covered with the covering portion 26 in a state where the flange 31 of the nozzle portion 22 and the flange 32 of the nozzle holder 23 are in surface contact, the nozzle portion 22 is covered. Even when the pulling force is applied, the pulling out is suppressed by the covering portion 26 bent along the flanges 31 and 32. Therefore, the pipe 19, the nozzle holder 23, and the nozzle part 22 can be fixed more firmly.
　被覆部２６は、ガラス繊維にプラスチックを含浸した材料で形成される。パイプ部２１と被覆部２６は、いずれも繊維と樹脂からなる材料であって同質の材料であるため、両者が結合されやすい。その結果、パイプ部２１のノズルホルダ２３に挿入されたノズル部２２が、被覆部２６を介してパイプ部２１に対してより安定的かつ強固に固定される。 The covering portion 26 is formed of a material obtained by impregnating glass fiber with plastic. Since both the pipe part 21 and the covering part 26 are made of a fiber and a resin and are of the same material, both are easily combined. As a result, the nozzle portion 22 inserted into the nozzle holder 23 of the pipe portion 21 is more stably and firmly fixed to the pipe portion 21 via the covering portion 26.
　被覆部２６のパイプ１９、ノズルホルダ２３及びノズル部２２に対する被覆方法は、ガラス繊維にプラスチックを含浸した材料で行われている一般的な技術を適用することができる。例えば、プラスチックが硬化する前にパイプ１９、ノズルホルダ２３及びノズル部２２に当該材料を巻きつけてから硬化させたり、当該材料を塗布してから硬化させたりする。 As a covering method for the pipe 19, the nozzle holder 23, and the nozzle portion 22 of the covering portion 26, a general technique performed using a material in which glass fiber is impregnated with plastic can be applied. For example, before the plastic is cured, the material is wound around the pipe 19, the nozzle holder 23, and the nozzle portion 22, or is cured after the material is applied.
　上記方法によって被覆された被覆部２６は、パイプ１９とノズルホルダ２３とノズル部２２を一体化させる。その結果、ノズル部２２がパイプ部２１に対して安定的に、かつ、簡易な構成で固定される。 The covering portion 26 covered by the above method integrates the pipe 19, the nozzle holder 23, and the nozzle portion 22. As a result, the nozzle part 22 is fixed to the pipe part 21 stably and with a simple configuration.
　なお、本実施形態は、図５に示すように、パイプ１９とノズルホルダ２３とノズル部２２に、被覆部２６が設置される場合に限定されない。図７に示すように、パイプ１９には被覆部２６が設置されず、ノズルホルダ２３とノズル部２２において、被覆部２６がノズルホルダ２３とノズル部２２にわたってノズルホルダ２３の外周面とノズル部２２の外周面を覆うように設置される。これにより、ノズルホルダ２３とノズル部２２が一体化されており、図７に示す変形例においても、ノズル部２２がノズルホルダ２３に対して安定的に固定される。また、ボルト及びナット等の金具類を用いることなく、ノズル部２２がノズルホルダ２３に対して簡易な構成で固定される。 In addition, this embodiment is not limited to when the coating | coated part 26 is installed in the pipe 19, the nozzle holder 23, and the nozzle part 22, as shown in FIG. As shown in FIG. 7, the pipe 19 is not provided with the covering portion 26, and in the nozzle holder 23 and the nozzle portion 22, the covering portion 26 extends over the nozzle holder 23 and the nozzle portion 22 and the outer peripheral surface of the nozzle holder 23 and the nozzle portion 22. It is installed so as to cover the outer peripheral surface. Thereby, the nozzle holder 23 and the nozzle part 22 are integrated, and the nozzle part 22 is stably fixed with respect to the nozzle holder 23 also in the modification shown in FIG. Further, the nozzle portion 22 is fixed to the nozzle holder 23 with a simple configuration without using metal fittings such as bolts and nuts.
　複数の脚部２７は、図４に示すように、パイプ部２１の下端部に配置される部材である。脚部２７は、パイプ部２１の先端部を含む複数箇所に配置されている。複数の脚部２７を介して、パイプ部２１の荷重が、パイプサポート（支持部）９１、支持梁（支持部）９２、及び支持梁（支持部）９３に伝達される。パイプサポート９１、支持梁９２、及び支持梁９３は、吸収塔１０の内部に設置されたスプレイパイプ２０を支持する部材である。 The plurality of leg portions 27 are members disposed at the lower end portion of the pipe portion 21 as shown in FIG. The leg portions 27 are arranged at a plurality of locations including the tip portion of the pipe portion 21. The load of the pipe portion 21 is transmitted to the pipe support (support portion) 91, the support beam (support portion) 92, and the support beam (support portion) 93 through the plurality of leg portions 27. The pipe support 91, the support beam 92, and the support beam 93 are members that support the spray pipe 20 installed inside the absorption tower 10.
　脚部２７は、底面がパイプサポート９１、支持梁９２又は支持梁９３の上面である設置面に設置される。また、脚部２７は、上端が例えばパイプ部２１のパイプ１９に接続される。脚部２７の高さは、脚部２７の底面から脚部２７の上端までの高さである。 The leg 27 is installed on an installation surface whose bottom surface is the upper surface of the pipe support 91, the support beam 92, or the support beam 93. Further, the upper end of the leg portion 27 is connected to, for example, the pipe 19 of the pipe portion 21. The height of the leg portion 27 is the height from the bottom surface of the leg portion 27 to the upper end of the leg portion 27.
　脚部２７の高さは、可能な限り低く抑えることが望ましい。スプレイパイプ２０は、脚部２７がパイプ１９に設置された状態で、吸収塔１０の側面に形成された開口部１４を介して、外部から内部へ挿入されて所定の位置に設置される。脚部２７の高さを抑えて、スプレイパイプ２０全体の高さを抑えることで、開口部１４の高さを小さくすることができ、吸収塔１０の強度低下を抑制できる。 It is desirable to keep the height of the legs 27 as low as possible. The spray pipe 20 is inserted from the outside to the inside through the opening 14 formed on the side surface of the absorption tower 10 in a state where the leg portion 27 is installed on the pipe 19 and installed at a predetermined position. By suppressing the height of the leg part 27 and suppressing the height of the spray pipe 20 as a whole, the height of the opening part 14 can be reduced and the strength reduction of the absorption tower 10 can be suppressed.
　図６に示すように、脚部２７の高さは、パイプ部２１の底部が脚部２７の設置面近くとなるように設定される。このとき、脚部２７の最下部の幅は、パイプ部２１のパイプ１９の直径と同じか、パイプ１９の直径よりも大きいことが望ましい。これにより、脚部２７と、パイプサポート９１、支持梁９２又は支持梁９３とを締結するボルト３３を挿入する孔を、パイプ部２１から更に離れた位置に明けることができるため、脚部２７の高さが低い場合であっても、脚部２７の最下部の幅がパイプ１９の直径よりも小さい場合に比べて、パイプサポート９１、支持梁９２、及び支持梁９３との結合手段であるボルト３３及びナット３４を締結する作業が行いやすい。 As shown in FIG. 6, the height of the leg portion 27 is set so that the bottom portion of the pipe portion 21 is close to the installation surface of the leg portion 27. At this time, the width of the lowermost portion of the leg portion 27 is preferably the same as the diameter of the pipe 19 of the pipe portion 21 or larger than the diameter of the pipe 19. Thereby, since the hole for inserting the bolt 33 for fastening the leg portion 27 and the pipe support 91, the support beam 92 or the support beam 93 can be opened at a position further away from the pipe portion 21, Even when the height is low, the bolt which is a coupling means with the pipe support 91, the support beam 92, and the support beam 93 compared to the case where the width of the lowermost portion of the leg portion 27 is smaller than the diameter of the pipe 19. The operation of fastening 33 and nut 34 is easy to perform.
　ノズル部２２のフランジ３１の張り出し長さは、例えば１０ｍｍ以上３０ｍｍ以下である。従来のようにフランジ３１にボルトを貫通させて、ボルト及びナットを結合する場合、フランジ３１の張り出し長さは、ボルトの軸太さを考慮して、例えば４５ｍｍ以上とする必要がある。これに対し、本実施形態では、ボルト及びナットによる結合を用いずに被覆部２６によってノズル部２２をノズルホルダ２３に固定させることから、フランジ３１の張り出し長さを短くすることができる。ノズルホルダ２３のフランジ３２の張り出し長さは、例えばノズル部２２のフランジ３１の張り出し長さと同等である。 The overhang length of the flange 31 of the nozzle part 22 is, for example, 10 mm or more and 30 mm or less. When a bolt is passed through the flange 31 and a bolt and a nut are coupled as in the prior art, the overhang length of the flange 31 needs to be, for example, 45 mm or more in consideration of the shaft thickness of the bolt. On the other hand, in this embodiment, since the nozzle part 22 is fixed to the nozzle holder 23 by the covering part 26 without using the connection by the bolt and the nut, the overhanging length of the flange 31 can be shortened. The overhang length of the flange 32 of the nozzle holder 23 is equivalent to, for example, the overhang length of the flange 31 of the nozzle portion 22.
　ノズルホルダ２３について、パイプ１９の外周面からのノズルホルダ２３の突出高さは、例えば５０ｍｍ以上１００ｍｍ以下である。
　ノズルホルダ２３の突出高さを５０ｍｍ以上とすることで、上述した被覆部２６のノズルホルダ２３への巻き付けや塗布が容易になる。その結果、ノズル部２２がノズルホルダ２３に確実に固定される。また、上述したとおり、スプレイパイプ２０は、吸収塔１０の側面に形成された開口部１４を介して、外部から内部へ挿入されて所定の位置に設置される。ノズルホルダ２３の突出高さを１００ｍｍ以下とすることで、開口部１４の高さを小さくすることができ、吸収塔１０の強度低下を抑制できる。 As for the nozzle holder 23, the protruding height of the nozzle holder 23 from the outer peripheral surface of the pipe 19 is, for example, 50 mm or more and 100 mm or less.
By setting the protruding height of the nozzle holder 23 to 50 mm or more, the above-described covering portion 26 can be easily wound and applied to the nozzle holder 23. As a result, the nozzle part 22 is securely fixed to the nozzle holder 23. Further, as described above, the spray pipe 20 is inserted from the outside to the inside through the opening 14 formed on the side surface of the absorption tower 10 and is installed at a predetermined position. By setting the protruding height of the nozzle holder 23 to 100 mm or less, the height of the opening 14 can be reduced, and a decrease in strength of the absorption tower 10 can be suppressed.
　なお、上述した実施形態では、パイプ部２１においてパイプ１９にノズルホルダ２３が設けられる場合について説明したが、本開示はこの例に限定されない。例えば、パイプ１９にノズルホルダ２３が設けられず、ノズル部２２が直接パイプ１９に設置されてもよい。この場合、ノズル部２２のフランジ３１は、ノズル部２２の高さ方向の中間部分ではなく、ノズル部２２の一端に設けられ、フランジ３１がパイプ１９の外周面に沿って設置される。そして、パイプ１９とノズル部２２には、被覆部２６がパイプ１９とノズル部２２にわたってパイプ１９の外周面とノズル部２２の外周面を覆うように設置される。これにより、パイプ１９とノズル部２２が一体化されており、ノズル部２２がパイプ１９に対して安定的に固定される。 In the above-described embodiment, the case where the nozzle holder 23 is provided in the pipe 19 in the pipe portion 21 has been described, but the present disclosure is not limited to this example. For example, the nozzle holder 23 may not be provided on the pipe 19, and the nozzle portion 22 may be installed directly on the pipe 19. In this case, the flange 31 of the nozzle portion 22 is provided not at the intermediate portion in the height direction of the nozzle portion 22 but at one end of the nozzle portion 22, and the flange 31 is installed along the outer peripheral surface of the pipe 19. The pipe 19 and the nozzle portion 22 are provided with a covering portion 26 so as to cover the outer peripheral surface of the pipe 19 and the outer peripheral surface of the nozzle portion 22 over the pipe 19 and the nozzle portion 22. Thereby, the pipe 19 and the nozzle part 22 are integrated, and the nozzle part 22 is stably fixed with respect to the pipe 19.
　また、上述した実施形態では、ノズル部２２のフランジ３１とノズルホルダ２３のフランジ３２の結合において、ボルト及びナットを使用しない場合について説明したが、本開示はこの例に限定されない。被覆部２６と合わせてボルト及びナットによる結合を行ってもよい。この場合、被覆部２６による一体化が行われていることから、ノズル部２２一つ当たりのボルト及びナットの数を従来に比べて減らしてもよい。また、ボルト及びナットの表面に被覆部２６による被覆を行えば、ボルト及びナットを耐食性を有する高級金属としなくてもよい。 In the above-described embodiment, the case where bolts and nuts are not used in the connection between the flange 31 of the nozzle portion 22 and the flange 32 of the nozzle holder 23 has been described. However, the present disclosure is not limited to this example. You may couple | bond with a coating | coated part 26 with a volt | bolt and a nut. In this case, since the integration by the covering portion 26 is performed, the number of bolts and nuts per nozzle portion 22 may be reduced as compared with the conventional case. Further, if the surface of the bolt and nut is covered with the covering portion 26, the bolt and nut need not be made of a high-grade metal having corrosion resistance.
１０　　：吸収塔
１１　　：排ガス導入部
１２　　：排ガス排出部
１３　　：底部
１４　　：開口部
１５　　：マンホール
１９　　：パイプ
２０　　：スプレイパイプ
２１　　：パイプ部
２２　　：ノズル部
２２ａ　：開口
２２ｂ　：開口
２３　　：ノズルホルダ
２４　　：取付フランジ
２５　　：供給口
２６　　：被覆部
２７　　：脚部
２８　　：貫通孔
３０　　：デミスタ
３１　　：フランジ
３２　　：フランジ
３３　　：ボルト
３４　　：ナット
４０　　：循環ポンプ
９１　　：パイプサポート
９２　　：支持梁
９３　　：支持梁
１００　：脱硫装置
  DESCRIPTION OF SYMBOLS 10: Absorption tower 11: Exhaust gas introduction part 12: Exhaust gas discharge part 13: Bottom part 14: Opening part 15: Manhole 19: Pipe 20: Spray pipe 21: Pipe part 22: Nozzle part 22a: Opening 22b: Opening 23: Nozzle holder 24 : Mounting flange 25: Supply port 26: Cover part 27: Leg part 28: Through hole 30: Demister 31: Flange 32: Flange 33: Bolt 34: Nut 40: Circulation pump 91: Pipe support 92: Support beam 93: Support beam 100: Desulfurization equipment

Claims (9)

  1. 　外周面に貫通孔が形成されたパイプ部と、
    　前記パイプ部の前記貫通孔に対応する位置に設置されるノズル部と、
    　前記パイプ部と前記ノズル部の両方にわたって前記パイプ部の外周面と前記ノズル部の外周面を覆うように設置される被覆部と、
    を備えるスプレイパイプ。     A pipe portion having a through-hole formed on the outer peripheral surface;
    A nozzle portion installed at a position corresponding to the through hole of the pipe portion;
    A covering portion installed so as to cover the outer peripheral surface of the pipe portion and the outer peripheral surface of the nozzle portion over both the pipe portion and the nozzle portion;
    With a spray pipe.
  2. 　前記パイプ部は、
    　円筒部材であるパイプと、
    　前記パイプに形成された前記貫通孔に対応する位置において、前記パイプの外周面において径方向に突出するように設けられたノズルホルダと、
    を有し、
    　前記被覆部は、前記ノズルホルダ及び前記ノズル部にわたって前記ノズルホルダの外周面及び前記ノズル部の外周面を覆うように設置される請求項１に記載のスプレイパイプ。     The pipe part is
    A pipe that is a cylindrical member;
    A nozzle holder provided so as to protrude radially on the outer peripheral surface of the pipe at a position corresponding to the through hole formed in the pipe;
    Have
    The spray pipe according to claim 1, wherein the covering portion is installed so as to cover an outer peripheral surface of the nozzle holder and an outer peripheral surface of the nozzle portion over the nozzle holder and the nozzle portion.
  3. 　前記被覆部は、前記ノズルホルダ及び前記ノズル部だけでなく、前記パイプにわたって前記パイプの外周面、前記ノズルホルダの外周面及び前記ノズル部の外周面を覆うように設置される請求項２に記載のスプレイパイプ。 The said coating | coated part is installed so that not only the said nozzle holder and the said nozzle part but the outer peripheral surface of the said pipe, the outer peripheral surface of the said nozzle holder, and the outer peripheral surface of the said nozzle part may be covered over the said pipe. Spray pipe.
  4. 　前記パイプ部は、繊維強化プラスチック製であり、前記被覆部は、ガラス繊維にプラスチックを含浸した材料で形成される請求項１から３のいずれか１項に記載のスプレイパイプ。 The spray pipe according to any one of claims 1 to 3, wherein the pipe portion is made of fiber reinforced plastic, and the covering portion is formed of a material obtained by impregnating glass fiber with plastic.
  5. 　前記ノズル部は、繊維強化プラスチック製である請求項４に記載のスプレイパイプ。 The spray pipe according to claim 4, wherein the nozzle portion is made of fiber reinforced plastic.
  6. 　前記ノズル部は、外周面において径方向に突出したフランジを有する請求項１から５のいずれか１項に記載のスプレイパイプ。 The spray pipe according to any one of claims 1 to 5, wherein the nozzle portion has a flange projecting in a radial direction on an outer peripheral surface.
  7. 　前記フランジは、前記ノズル部の高さ方向の中間部に形成される請求項６に記載のスプレイパイプ。 The spray pipe according to claim 6, wherein the flange is formed at an intermediate portion in the height direction of the nozzle portion.
  8. 　前記パイプ部の外周面からの前記ノズルホルダの突出高さは、５０ｍｍ以上１００ｍｍ以下である請求項２又は３に記載のスプレイパイプ。 The spray pipe according to claim 2 or 3, wherein a protruding height of the nozzle holder from the outer peripheral surface of the pipe portion is 50 mm or more and 100 mm or less.
  9. 　請求項１から８のいずれか１項に記載のスプレイパイプと、
    　軸方向が水平方向に対して平行に設置された前記パイプ部の底面側において、前記スプレイパイプの設置面に設けられ、前記パイプ部を支持する脚部と、
    を備え、
    　前記パイプ部の前記底面が、前記設置面の直上となるように、前記脚部によって前記パイプ部が支持されている脱硫装置。
     
          A spray pipe according to any one of claims 1 to 8,
    On the bottom surface side of the pipe portion that is installed parallel to the horizontal direction in the axial direction, provided on the installation surface of the spray pipe, and a leg portion that supports the pipe portion;
    With
    A desulfurization apparatus in which the pipe portion is supported by the leg portions so that the bottom surface of the pipe portion is directly above the installation surface.

PCT/JP2018/041717 2018-02-05 2018-11-09 Spray pipe and desulfurizing device WO2019150696A1 (en)

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JP6977830B1 (en) * 2020-08-14 2021-12-08 富士電機株式会社 Exhaust gas treatment equipment

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JPS62274183A (en) * 1986-05-21 1987-11-28 株式会社日立製作所 Supporter for piping
JPH03123552U (en) * 1990-03-24 1991-12-16
JPH081050A (en) * 1994-06-16 1996-01-09 Tokyo Kakoki Kk Spray nozzle
WO1997027931A1 (en) * 1996-02-01 1997-08-07 Mitsubishi Heavy Industries, Ltd. Apparatus for desulfurizing exhaust gas
JPH09225256A (en) * 1996-02-21 1997-09-02 Mitsubishi Heavy Ind Ltd Stack gas desulfurizer
JPH09313923A (en) * 1996-06-04 1997-12-09 Mitsubishi Heavy Ind Ltd Gas-liquid contact apparatus
JPH11104449A (en) * 1997-10-03 1999-04-20 Babcock Hitachi Kk Spray absorption tower and wet flue gas desulfurization apparatus having the same
JP2006255573A (en) * 2005-03-16 2006-09-28 Nikko Kinzoku Kk Exhaust gas washing cooling tower

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JP3123552B2 (en) 1999-08-20 2001-01-15 三菱電機株式会社 Communication terminal device
JP2012179533A (en) 2011-02-28 2012-09-20 Mitsubishi Heavy Ind Ltd Exhaust desulfurization apparatus
CN204544507U (en) * 2015-04-02 2015-08-12 上海映特环保技术有限公司 A kind of nozzle for pipeline

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62274183A (en) * 1986-05-21 1987-11-28 株式会社日立製作所 Supporter for piping
JPH03123552U (en) * 1990-03-24 1991-12-16
JPH081050A (en) * 1994-06-16 1996-01-09 Tokyo Kakoki Kk Spray nozzle
WO1997027931A1 (en) * 1996-02-01 1997-08-07 Mitsubishi Heavy Industries, Ltd. Apparatus for desulfurizing exhaust gas
JPH09225256A (en) * 1996-02-21 1997-09-02 Mitsubishi Heavy Ind Ltd Stack gas desulfurizer
JPH09313923A (en) * 1996-06-04 1997-12-09 Mitsubishi Heavy Ind Ltd Gas-liquid contact apparatus
JPH11104449A (en) * 1997-10-03 1999-04-20 Babcock Hitachi Kk Spray absorption tower and wet flue gas desulfurization apparatus having the same
JP2006255573A (en) * 2005-03-16 2006-09-28 Nikko Kinzoku Kk Exhaust gas washing cooling tower

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KR20200101978A (en) 2020-08-28
TWI706805B (en) 2020-10-11

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