WO2022099690A1 - Ensemble d'absorption de brouillard acide pour la production d'acide sulfurique - Google Patents

Ensemble d'absorption de brouillard acide pour la production d'acide sulfurique Download PDF

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Publication number
WO2022099690A1
WO2022099690A1 PCT/CN2020/129046 CN2020129046W WO2022099690A1 WO 2022099690 A1 WO2022099690 A1 WO 2022099690A1 CN 2020129046 W CN2020129046 W CN 2020129046W WO 2022099690 A1 WO2022099690 A1 WO 2022099690A1
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WO
WIPO (PCT)
Prior art keywords
fixedly connected
circulating water
acid mist
interlayer
water tank
Prior art date
Application number
PCT/CN2020/129046
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English (en)
Chinese (zh)
Inventor
杨璧诚
王立彪
Original Assignee
苏州睿澎诚科技有限公司
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Priority to PCT/CN2020/129046 priority Critical patent/WO2022099690A1/fr
Publication of WO2022099690A1 publication Critical patent/WO2022099690A1/fr

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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
    • 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
    • B01D53/38—Removing components of undefined structure
    • B01D53/40—Acidic components
    • 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
    • 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
    • B01D53/81—Solid phase processes
    • B01D53/82—Solid phase processes with stationary reactants

Definitions

  • the invention relates to the technical field of environmental protection, in particular to an acid mist absorption component produced by sulfuric acid.
  • Acid mist usually refers to mist-like acid substances.
  • the particles of acid mist in the air are very small, smaller than those of water mist, and higher than the humidity of smoke.
  • Substances between water mist and water mist are highly corrosive, including acid mist formed by inorganic acids such as sulfuric acid, nitric acid, and hydrochloric acid, and organic acids such as formic acid, acetic acid, and propionic acid.
  • inorganic acids such as sulfuric acid, nitric acid, and hydrochloric acid
  • organic acids such as formic acid, acetic acid, and propionic acid.
  • the exhaust gas discharged is mostly a mixture of various acid mists.
  • the discharge of acid mists will cause acid mists and acid gases in the air of the workplace. After being discharged into the atmosphere, it will cause acid deposition in the atmospheric environment. It not only endangers the health of workers and residents around the plant, corrodes plant equipment and precision instruments, and causes losses in production and life, but also adversely affects the survival of crops and other animals and plants, causing damage to buildings, cultural relics, etc.
  • the control of acid rain starts with the control of acid fog, reducing the formation of acid fog, reducing the amount of acid rain, and causing less pollution to the environment.
  • Traditional process equipment and methods cannot recover acid rain.
  • Now special acid mist recovery and treatment equipment must be used to recover a large amount of acid mist and reduce the air discharge.
  • Acid mist must be recovered.
  • Recyclable acid mist equipment is used, and the equipment has cooling absorption.
  • the tower uses the hydrochloric acid gas solubility curve to absorb and cool the hydrochloric acid gas with tap water, thereby recovering the hydrochloric acid.
  • the design of direct absorption and indirect cooling is adopted to increase the contact between the gas and the acid mist of hydrochloric acid to maximize the recovery of the acid mist.
  • the purpose of the present invention is to provide an acid mist absorbing assembly for the production of sulfuric acid, so as to solve the problems raised in the above-mentioned background art.
  • an acid mist absorption assembly for sulfuric acid production comprising a base, a circulating water tank is fixedly connected to the middle of the top of the base, and a spray is connected through the left side of the top of the circulating water tank.
  • the tower the right side of the top of the circulating water tank is connected with a liquid level gauge
  • the top of the base is fixedly connected with a circulating water pump
  • the right side of the circulating water pump is installed with a bracket
  • the top of the bracket is fixedly connected with a dosing barrel
  • the top of the right wall of the bracket is fixedly connected with a working ladder
  • the right wall of the circulating water tank is connected with an extractable filter screen
  • the left wall of the dosing barrel is connected with a drug delivery pipeline
  • the spray tower The top is connected with a ventilation pipe
  • the left port of the ventilation pipe is connected with a FRP fan
  • an activated carbon filter interlayer is installed on the top of the FRP fan
  • a chimney is fixedly connected to the top of the activated carbon filter interlayer.
  • the medicine delivery pipeline includes a medicine inlet port and a pipeline connection port, the top of the medicine inlet port fits with the top of the medicine dosing barrel, and the pipeline connection port is opened on the right wall of the medicine dosing barrel.
  • the connection method makes the acid mist produced by the production of sulfuric acid enter the spray tower, and the sodium hydroxide solution is added into the dosing barrel to be transported to the circulating water tank through the drug delivery pipeline.
  • the circulating water pump will continue to transport.
  • the water in the circulating water tank is sprayed by the sprinkler head to degrade the acid mist.
  • a water delivery pipeline is fixedly connected to the top port of the circulating water pump, and the left pipeline of the circulating water pump penetrates the right wall of the circulating water tank and extends to the inner cavity of the circulating water tank.
  • the transmission motors of the FRP fan are double motors, and the transmission motors are fixedly connected to each other by belts.
  • the inner cavity of the dosing barrel is filled with NaOH solution, and a packing layer is fixedly connected to the tower body of the spray tower, and the packing layer uses calcium oxide interlayer, sodium chloride interlayer, and fine sand interlayer.
  • the sulfuric acid in the acid mist is continuously degraded, and the acid mist is brought into the anaerobic tank by the spray water through the honeycomb water distributor. The ionization of the acid mist in the anaerobic tank can degrade the acid mist to the greatest extent.
  • physical ionization equipment is installed in the anaerobic tank.
  • the FRP fan includes a casing, the bottom of the casing is fixedly connected to the inner cavity of the chimney, the inner cavity of the casing is provided with a fan blade, and the left wall of the casing is connected with a transmission motor through it, An air inlet duct is connected through the right wall of the casing, and an air supply duct is opened on the top of the casing.
  • the spray tower includes a tower body, the bottom of the tower body is connected to the left side of the top of the circulating water tank, the right wall of the tower body is connected to a water delivery pipeline, and the bottom of the water delivery pipeline is connected through A spray head is connected, a mist absorption layer is fixedly connected to the top of the inner cavity of the tower, a packing layer is installed on the top of the water pipeline, and an anaerobic tank is installed at the bottom of the inner cavity of the tower, and the anaerobic tank is installed.
  • a mesh grid is fixedly connected to the top of the packing layer
  • a calcium oxide interlayer is fixedly connected to the bottom of the mesh grid
  • a fine sand interlayer is fixedly connected to the bottom of the calcium oxide interlayer.
  • a sodium chloride interlayer is fixedly connected to the bottom of the fine sand interlayer
  • a honeycomb water distributor is fixedly connected to the bottom of the sodium chloride interlayer.
  • the acid mist absorption component produced by sulfuric acid uses the method of pipeline connection to make the acid mist generated by sulfuric acid production enter the spray tower, and then add sodium hydroxide solution from the dosing barrel to the circulating water tank through the drug delivery pipeline.
  • the acid mist enters the spray tower, and the circulating water pump will continuously transport the water in the circulating water tank to be sprayed out by the spray head, so that the acid mist is degraded.
  • Calcium oxide interlayer, sodium chloride interlayer and fine sand interlayer can continuously degrade sulfuric acid in acid mist.
  • the ionization of acid mist can degrade the acid mist to the greatest extent, and more solid impurities will be generated after ionization.
  • an extractable filter screen is installed on the top of the inner cavity of the circulating water tank for blocking.
  • the fixed impurities generated by ionization will degrade most of the acid mist through continuous water circulation spraying, and a small part of the acid mist will be absorbed by the suction layer when entering the spray tower.
  • an activated carbon filter interlayer is installed at the top outlet of the FRP fan to block the residue, so that the gas emitted from the chimney meets the emission standards.
  • the acid mist absorption component produced by the sulfuric acid mainly passes through the filler layer to make the acid mist undergo preliminary degradation.
  • the traditional acid mist absorption device also uses this principle. Compared with the traditional one, we add an anaerobic tank, and the anaerobic There is a physical ionization device installed in the pool, which mainly uses ionization to ionize the sulfate ions in the acid mist, and then degrades through the packing layer, so that the acid mist can be absorbed and degraded to the greatest extent, and the strength of acid mist absorption is increased.
  • the acid mist absorption component produced by the sulfuric acid and the glass fiber reinforced plastic acid mist absorption tower are currently mostly used for the treatment of corrosive gases (such as acid and alkaline waste gas) by the liquid absorption method.
  • corrosive gases such as acid and alkaline waste gas
  • the key to the use of liquid absorption method to treat this waste gas lies in the selection of purification equipment.
  • the process and product have the characteristics of simple structure, low energy consumption, high purification efficiency and wide application range.
  • the acid mist waste gas is introduced into the purification tower by the air duct, and passes through the packing layer.
  • the exhaust gas and the sodium hydroxide solution are fully contacted with the gas-liquid two-phase absorption and neutralization reaction, the acid mist exhaust gas is purified, and then dewatered and demisted by the defogging plate, and then discharged into the atmosphere by the fan.
  • the absorption liquid is pressurized by the water pump at the bottom of the tower and sprayed down at the top of the tower, and finally refluxed to the bottom of the tower for recycling.
  • Fig. 1 is the structural representation of the present invention
  • Fig. 2 is the sectional schematic diagram of the structure chimney and FRP fan of the present invention
  • FIG. 3 is a schematic diagram of the inner cavity of a spray tower with a structure of the present invention.
  • FIG. 4 is a schematic diagram of the layers of the structured packing layer of the present invention.
  • FIG. 5 is a schematic cross-sectional view of the drug delivery pipeline of the structure of the present invention.
  • an acid mist absorption component produced by sulfuric acid comprising a base 1, a circulating water tank 2 is fixedly connected to the middle of the top of the base 1, and the left side of the top of the circulating water tank 2 is connected through There is a spray tower 3, a liquid level gauge 4 is connected through the right side of the top of the circulating water tank 2, a circulating water pump 5 is fixedly connected to the top of the base 1, a bracket 6 is installed on the right side of the circulating water pump 5, and the top of the bracket 6 is fixedly connected with a
  • the dosing barrel 7, the top of the right wall of the support 6 is fixedly connected with a working ladder 8, the right wall of the circulating water tank 2 is connected with an extractable filter screen 9, and the left wall of the dosing barrel 7 is connected with a drug delivery pipeline 10, spraying
  • the top of the tower 3 is connected with a ventilation pipe 11, the left port of the ventilation pipe 11 is connected with a FRP fan 12, an activated carbon filter interlayer 13 is installed
  • the spray tower 3 includes a tower body 31, the bottom of the tower body 31 is connected to the left side of the top of the circulating water tank 2, the right wall of the tower body 31 is connected with a water delivery pipeline 32, and the bottom of the water delivery pipeline 32 is connected through A spray head 33 is connected, a mist absorbing layer 34 is fixedly connected to the top of the inner cavity of the tower body 31, a packing layer 35 is installed on the top of the water delivery pipeline 32, and an anaerobic pool 36 is installed at the bottom of the inner cavity of the tower body 31.
  • the bottom of the pool 36 is provided with a water filter port 37, and the sodium hydroxide solution is added into the dosing barrel 7 to be transported to the circulating water tank 2 through the drug delivery pipeline 10.
  • the circulating water pump will continuously transport the circulating water tank 2.
  • the water is sprayed by the spray head 33, so that the acid mist is degraded.
  • Embodiment 2 The top of the filler layer 35 is fixedly connected with a mesh grid 351, the bottom of the mesh grid 351 is fixedly connected with a calcium oxide interlayer 352, and the bottom of the calcium oxide interlayer 352 is fixedly connected with a fine sand interlayer 353, fine sand interlayer
  • the bottom of 353 is fixedly connected with a sodium chloride interlayer 354, the bottom of the sodium chloride interlayer 354 is fixedly connected with a honeycomb water distributor 355, and a packing layer 35 is fixedly connected in the tower body of the spray tower 3, and in the packing layer 35
  • the use of calcium oxide interlayer, sodium chloride interlayer and fine sand interlayer can continuously degrade the sulfuric acid in the acid mist. Ionizing the acid mist can degrade the acid mist to the greatest extent.
  • the FRP fan 12 includes a casing 121, the bottom of the casing 121 is fixedly connected to the inner cavity of the chimney 14, the fan blade 122 is installed in the inner cavity of the casing 121, and the transmission motor 123 is connected through the left wall of the casing 121 , the right wall of the housing 121 is connected with an air inlet duct 124, and the top of the housing 121 is provided with an air supply duct 125.
  • the medicine delivery pipeline 10 includes a medicine inlet port 101 and a pipeline connection port 102.
  • the top of the medicine inlet port 101 is connected to the feeder
  • the top of the medicine barrel 7 is matched, the pipeline connection port 102 is opened on the right wall of the medicine barrel 7, the top port of the circulating water pump 5 is fixedly connected with a water delivery pipeline 32, and the left side pipeline of the circulating water pump 5 runs through the circulating water tank 2.
  • the right wall extends to the inner cavity of the circulating water tank 2.
  • the transmission motor 123 of the FRP fan 12 is a double motor, and the transmission motors 123 are fixedly connected to each other through a belt.
  • the inner cavity of the dosing barrel 7 is filled with NaOH solution, and the anaerobic tank 36 A physical ionization device is installed in it.
  • the acid mist produced by the production of sulfuric acid enters the spray tower 3 by means of pipeline connection, and the sodium hydroxide solution is added into the dosing barrel 7 and transported to the circulating water tank 2 through the drug delivery pipeline 10.
  • the circulating water pump 5 will continuously transport the water in the circulating water tank 2 to be sprayed by the spray head 33, so that the acid mist is degraded.
  • calcium oxide interlayer 352, sodium chloride interlayer 353, and fine sand interlayer 354 can be used to continuously degrade the sulfuric acid component in the acid mist, and the acid mist is brought into the anaerobic tank 36 through the honeycomb water distributor 355 by the spray water, Using the ionosphere in the anaerobic tank to ionize the acid mist can degrade the acid mist to the greatest extent, and more solid impurities will be generated after ionization.
  • An extractable filter screen 9 is installed on the top of the ionto In this way, the FRP fan 12 is reused by using the ventilation pipe 11 to inhale into the chimney 14.
  • an activated carbon filter interlayer 13 is installed at the top outlet of the FRP fan 12 to block the residue, so that the gas discharged from the chimney meets the discharge requirements. standard.

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

Abstract

L'invention concerne un ensemble d'absorption de brouillard acide pour la production d'acide sulfurique, comprenant une base (1) ; un réservoir d'eau de circulation (2) est relié de manière fixe au milieu de la partie supérieure de la base (1) ; une tour de pulvérisation (3) est reliée au côté gauche de la partie supérieure du réservoir d'eau de circulation (2) dans un mode de pénétration, et une jauge de niveau de liquide (4) est reliée au côté droit de la partie supérieure du réservoir d'eau de circulation (2) dans un mode de pénétration ; une pompe à eau de circulation (5) est reliée de manière fixe à la partie supérieure de la base (1) ; un support (6) est monté sur le côté droit de la pompe à eau de circulation (5) ; un cylindre de dosage (7) relié de manière fixe à la partie supérieure du support (6) ; une échelle de travail (8) est reliée de manière fixe à la partie supérieure de la paroi droite du support (6) ; un tamis filtrant extractible (9) est relié à la paroi droite du réservoir d'eau de circulation (2) dans un mode de pénétration ; une conduite de médicament (10) est reliée à la paroi gauche du cylindre de dosage (7) dans un mode de pénétration ; un tuyau d'évent (11) est relié à la partie supérieure de la tour de pulvérisation (3) dans un mode de pénétration ; une soufflante en plastique renforcée par des fibres de verre (12) est reliée à un orifice gauche du tuyau d'évacuation (11) dans un mode de pénétration ; une couche intermédiaire de filtre à charbon actif (13) est montée au niveau de la partie supérieure de la soufflante en plastique renforcée par des fibres de verre (12) ; une cheminée (14) est reliée de manière fixe à la partie supérieure de la couche intermédiaire de filtre à charbon actif (13) ; et une fenêtre d'inspection (15) est montée sur l'avant de la tour de pulvérisation (3).
PCT/CN2020/129046 2020-11-16 2020-11-16 Ensemble d'absorption de brouillard acide pour la production d'acide sulfurique WO2022099690A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115228646A (zh) * 2022-07-25 2022-10-25 华能南京燃机发电有限公司 一种循环水塔的移动式加药装置
CN116899348A (zh) * 2023-09-14 2023-10-20 宁津禾洁生物科技有限公司 用于糠醛生产的糠醛渣锅炉烟气除尘器
CN117695792A (zh) * 2024-02-05 2024-03-15 佛山市伊清环保工程技术有限公司 一种喷雾干燥塔烟气除尘净化设备及其净化方法

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CN206965442U (zh) * 2017-04-28 2018-02-06 天津华泰清源环境技术有限公司 一种酸碱蒸汽废气处理塔
CN108246081A (zh) * 2017-12-15 2018-07-06 宁波九象环保科技有限公司 酸雾净化塔
CN208082200U (zh) * 2018-02-09 2018-11-13 绍兴金冶环保科技有限公司 一种蚀刻液车间用具有防冻功能的酸雾吸收塔
CN208275222U (zh) * 2018-05-04 2018-12-25 杨锋 一种脱硫吸收塔内的酸雾净化机构
CN211612238U (zh) * 2019-12-31 2020-10-02 广州市南粤钢管有限公司 一种酸雾处理装置

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Publication number Priority date Publication date Assignee Title
US3936281A (en) * 1973-03-30 1976-02-03 Sudoldenburger Tierfrischmehl-Anlagengesellschaft Method and apparatus for deodorizing waste gases
CN204672110U (zh) * 2015-04-24 2015-09-30 福建鼎信实业有限公司 一种不锈钢退火酸洗线酸洗废气预处理装置
CN206508764U (zh) * 2017-03-04 2017-09-22 河北华栋化工有限责任公司 一种氯乙酸生产用盐酸吸收塔
CN206965442U (zh) * 2017-04-28 2018-02-06 天津华泰清源环境技术有限公司 一种酸碱蒸汽废气处理塔
CN108246081A (zh) * 2017-12-15 2018-07-06 宁波九象环保科技有限公司 酸雾净化塔
CN208082200U (zh) * 2018-02-09 2018-11-13 绍兴金冶环保科技有限公司 一种蚀刻液车间用具有防冻功能的酸雾吸收塔
CN208275222U (zh) * 2018-05-04 2018-12-25 杨锋 一种脱硫吸收塔内的酸雾净化机构
CN211612238U (zh) * 2019-12-31 2020-10-02 广州市南粤钢管有限公司 一种酸雾处理装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115228646A (zh) * 2022-07-25 2022-10-25 华能南京燃机发电有限公司 一种循环水塔的移动式加药装置
CN115228646B (zh) * 2022-07-25 2024-02-13 华能南京燃机发电有限公司 一种循环水塔的移动式加药装置
CN116899348A (zh) * 2023-09-14 2023-10-20 宁津禾洁生物科技有限公司 用于糠醛生产的糠醛渣锅炉烟气除尘器
CN117695792A (zh) * 2024-02-05 2024-03-15 佛山市伊清环保工程技术有限公司 一种喷雾干燥塔烟气除尘净化设备及其净化方法
CN117695792B (zh) * 2024-02-05 2024-04-23 佛山市伊清环保工程技术有限公司 一种喷雾干燥塔烟气除尘净化设备及其净化方法

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