WO2022267090A1 - Appareil de traitement de gaz d'échappement - Google Patents

Appareil de traitement de gaz d'échappement Download PDF

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Publication number
WO2022267090A1
WO2022267090A1 PCT/CN2021/103657 CN2021103657W WO2022267090A1 WO 2022267090 A1 WO2022267090 A1 WO 2022267090A1 CN 2021103657 W CN2021103657 W CN 2021103657W WO 2022267090 A1 WO2022267090 A1 WO 2022267090A1
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WO
WIPO (PCT)
Prior art keywords
liquid
exhaust gas
cooling
separation unit
unit
Prior art date
Application number
PCT/CN2021/103657
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English (en)
Chinese (zh)
Inventor
许开华
魏琼
却运新
唐兴邦
徐志国
李佳佳
Original Assignee
格林美股份有限公司
常州永邦干燥机械有限公司
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Publication date
Application filed by 格林美股份有限公司, 常州永邦干燥机械有限公司 filed Critical 格林美股份有限公司
Publication of WO2022267090A1 publication Critical patent/WO2022267090A1/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
    • B01D53/34—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
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
    • F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits

Definitions

  • the invention relates to the technical field of exhaust gas treatment, in particular to an exhaust gas treatment device.
  • Exhaust gas purification mainly refers to the treatment of industrial waste gas such as dust particles, flue gas, odorous gas, and toxic and harmful gases generated in industrial places.
  • Common exhaust gas purification includes factory smoke and dust exhaust gas purification, workshop dust exhaust gas purification, organic waste gas purification, Exhaust gas odor purification, acid-base exhaust gas purification, chemical waste gas purification, etc.
  • exhaust gas purification requires the use of exhaust gas purification devices, and adsorption devices are installed in the exhaust gas purification devices.
  • the condenser has an exhaust gas inlet, a cooling water inlet located above the exhaust gas inlet, a washing water outlet located below the exhaust gas inlet, and an air outlet located above the cooling water inlet;
  • the upper port of the Venturi is the air inlet.
  • the lower port of the Venturi is the outlet, and the inlet of the Venturi is connected to the gas outlet of the condenser; the water inlet pipe is tangentially connected to the upper part of the Venturi so that the washing water enters the upper part of the Venturi tangentially.
  • the separator is provided with a feed port, a liquid discharge port and an exhaust port.
  • the connecting elbow is connected to the lower port of the Venturi, and the connecting elbow is connected tangentially at the feed inlet of the separator.
  • the exhaust gas enters the condenser through the exhaust gas inlet. Due to the fast flow of the exhaust gas, the exhaust gas cannot be buffered and slowed down during the spray washing process, which will cause the exhaust gas to contact the purification liquid for a short time during spraying. And the contact area is small, and the exhaust gas cannot be effectively purified. At the same time, in the above-mentioned technical means, fresh purification liquid must be constantly replenished, resulting in a large consumption of purification liquid and increased production costs.
  • the invention provides an exhaust gas treatment device, comprising a condensation unit for cooling exhaust gas, a gas-liquid mixing unit for mixing exhaust gas and purification liquid to form a turbulent state, and a separation unit for separating exhaust gas and purification liquid;
  • the gas-liquid mixing unit communicates with the condensing unit and the separation unit respectively, and the condensing unit communicates with the lower end of the separation unit via the first liquid pumping assembly, so that the purified liquid can be separated in the condensing unit, the gas-liquid mixing unit, and the separation unit.
  • a cycle path is formed between the units;
  • the condensing unit includes a cooling cylinder, a slow-flow cylinder and a liquid-phase spray end arranged in the cooling cylinder, and a first cooling cavity is formed around the periphery of the slow-flow cylinder and the inner wall of the cooling cylinder.
  • a second cooling cavity communicated with the first cooling cavity is formed between the top surface of the slow flow cylinder and the inner top surface of the cooling cylinder, and a cooling cavity communicating with the separation unit is provided in the first cooling cavity.
  • the liquid-phase spray end of the second cooling cavity communicates with the top surface of the slow flow cylinder, the exhaust gas input end of the cooling cylinder communicates with the first cooling cavity, and the exhaust gas input end communicates with the first cooling cavity.
  • the input exhaust gas is output through the first cooling cavity, the second cooling cavity and the slow flow tube in order to reduce the temperature of the exhaust gas.
  • a distribution plate is provided between the inner top surface of the cooling cylinder and the top surface of the slow flow cylinder, and several water holes are opened through the distribution plate corresponding to the inner diameter of the slow flow cylinder.
  • the connecting end of the cylinder and the cooling cylinder is provided with a number of drainage holes communicating with the first cooling cavity.
  • Nozzle, the first liquid inlet nozzle and the second liquid inlet nozzle communicate with the first cooling cavity and the second cooling cavity respectively, and the liquid phase spray end communicates with the first liquid inlet nozzle
  • the liquid-phase spraying end includes a first spraying pipe and a plurality of first spraying heads fixed on the first spraying pipe at intervals, and the first spraying pipe communicates with the first liquid inlet nozzle.
  • the gas-liquid mixing unit includes a mixer main body and a second spray assembly arranged inside the mixer main body.
  • the mixer main body is generally conical in shape, and the upper end of the mixer main body is provided with two liquid inlets at intervals.
  • the upper end of the mixer main body is located between the two liquid inlets and is provided with an air inlet connected to the slow flow cylinder, and the lower end of the mixer main body is provided with a liquid outlet connected to the separation unit.
  • the second spray assembly includes a second spray pipe and several second spray heads, the second spray pipe is in the shape of a semicircle, the inner diameter of the second spray pipe decreases gradually, and the second spray pipe The end with a larger inner diameter communicates with a liquid inlet, and the plurality of second spray heads are arranged obliquely at intervals on the side of the second spray pipe close to the inner wall of the main body of the mixer.
  • a cone is arranged inside the mixer body below the two second spray assemblies, and at least two connecting rods are arranged on the circumference of the cone, and the cone is fixedly connected to the mixer body via the connecting rods , a liquid separation block is fixed in the liquid outlet, and a number of liquid separation holes are opened through the liquid separation block, and the liquid separation holes are conically arranged downwards.
  • liquid storage tank for storing the purified liquid
  • the liquid storage tank communicates with the gas-liquid mixing unit through the second liquid pumping component
  • the liquid storage The tank is also connected to the lower end of the separation unit via the third pumping component, so that the purified liquid can form a secondary circulation path between the gas-liquid mixing unit, the separation unit and the liquid storage tank.
  • the first liquid suction assembly includes a first liquid suction pipeline, a first liquid suction pump body connected to the first liquid suction pipeline, and a first liquid distribution pipeline, and the first liquid suction pipeline
  • One end of the first pumping line communicates with the lower end of the separation unit, and the other end of the first pumping line communicates with the first liquid inlet and the second liquid inlet respectively via two first liquid distribution lines
  • the liquid assembly includes a second liquid suction pipeline, a second liquid suction pump body connected to the second liquid suction pipeline, and a second liquid distribution pipeline, one end of the second liquid suction pipeline is connected to the lower end of the liquid storage tank The other end of the second pumping line is connected to the two liquid inlets respectively via two second liquid distribution lines
  • the third pumping assembly includes a third pumping line and a third pumping line The third liquid pump body connected with the liquid pipeline, one end of the third liquid suction pipeline is connected with the lower end of the liquid storage tank, and the other end of the third liquid suction pipeline is connected with the lower end of the
  • the liquid seal assembly includes a liquid seal tank and an air guide tube
  • the side wall of the cooling cylinder is also provided with a connecting nozzle that communicates with the first cooling cavity
  • the air guide tube One end communicates with the connection nozzle, and the other end of the air guide tube extends into the liquid seal tank and is located below the liquid level of the purification liquid.
  • the side wall at the lower end of the separation unit is provided with a liquid level sensor and a processor, and the liquid level sensor, the processor and the third pump body are electrically connected.
  • the lower end of the separation unit is also connected with a fourth pump body and a pH sensor, and the pH sensor, the fourth pump body and the processor are electrically connected.
  • the middle part of the top of the cooling cylinder is provided with a rotating shaft, the lower end of the rotating shaft is fixed with a scraper in contact with the surface of the distribution plate, the upper end of the rotating shaft is fixed with a rotating handle, and the cooling A cleaning hole is opened on the top of the cylinder to facilitate cleaning of the distribution plate, and a cover plate is arranged on the opening and closing of the cleaning hole.
  • the present invention provides a waste gas treatment device, the gas-liquid mixing unit communicates with the condensing unit and the separating unit respectively, and the condensing unit communicates with the lower end of the separating unit via the first liquid pumping component, so that the purified liquid is A circulation path is formed between the condensing unit, the gas-liquid mixing unit and the separation unit, and the exhaust gas is output through the first cooling cavity, the second cooling cavity, and the slow flow cylinder through the input end of the exhaust gas, which prolongs the time spent by the exhaust gas in the condensing unit.
  • the purification liquid is recycled in the purification device, and there is no need to continuously replenish new purification liquid, which effectively reduces the purification cost.
  • Fig. 1 is a schematic structural view of a waste gas treatment device of the present invention
  • Fig. 2 is the structural representation of condenser of the present invention
  • Fig. 3 is a sectional view along A-A direction of Fig. 2;
  • Fig. 4 is the structural representation of gas-liquid mixing unit of the present invention.
  • Fig. 5 is the front view of the gas-liquid mixing unit of the present invention.
  • Fig. 6 is a sectional view of the liquid separation block of the present invention.
  • Fig. 7 is a schematic diagram of the structure of the distribution plate of the present invention.
  • the invention provides an exhaust gas treatment device, comprising a condensation unit 1 for cooling exhaust gas, a gas-liquid mixing unit 2 for mixing exhaust gas and purification liquid to form a turbulent state, and a separation unit 3 for separating exhaust gas and purification liquid.
  • the gas-liquid mixing unit 2 communicates with the condensing unit 1 and the separation unit 3 respectively, and the condensing unit 1 communicates with the lower end of the separation unit 3 via the first liquid pumping assembly 4, so that the purified liquid can be mixed in the condensing unit 1 and the gas-liquid
  • a primary circulation path is formed between the unit 2 and the separation unit 3; the purification liquid is circulated in the purification device without constantly replenishing new purification liquid.
  • the condensing unit 1 includes a cooling cylinder 11, a slow flow cylinder 12 disposed in the cooling cylinder 11 and a liquid-phase spray end 13, and a first cooling cavity is formed around the periphery of the slow flow cylinder 12 and the inner wall of the cooling cylinder 11 14.
  • a second cooling cavity 15 communicating with the first cooling cavity 14 is formed between the top surface of the slow flow cylinder 12 and the inner top surface of the cooling cylinder 11.
  • the first cooling cavity 14 is provided with a separation unit 3
  • the connected liquid-phase spray end 13, the second cooling cavity 15 communicates with the top surface of the slow flow cylinder 12, the exhaust gas input end 16 of the cooling cylinder 11 communicates with the first cooling cavity 14, and enters through the exhaust gas input end 16
  • the exhaust gas is output through the first cooling cavity 14, the second cooling cavity 15, and the slow flow tube 12 in order to reduce the temperature of the exhaust gas.
  • a distribution plate 17 is provided between the inner top surface of the cooling cylinder 11 and the top surface of the slow flow cylinder 12, and a number of water holes are opened through the distribution plate 17 corresponding to the inner diameter of the slow flow cylinder 12. 171, the connecting end of the slow flow cylinder 12 and the cooling cylinder 11 is provided with a number of drainage holes 121 communicating with the first cooling cavity 14, and the side walls of the upper end of the cooling cylinder 11 are respectively provided with first inlets on both sides of the distribution plate 17.
  • liquid pipe mouth 18 and the second liquid inlet pipe mouth 19 communicate with the first cooling cavity 14 and the second cooling cavity 15 respectively
  • the liquid phase spraying End 13 is in communication with the first liquid inlet nozzle 18, and liquid phase spray end 13 comprises first shower pipe 131 and some first shower nozzles 132 that are fixed on the first shower pipe 131 at intervals, and the first shower pipe 131 communicates with the first liquid inlet nozzle 18 .
  • the middle part of the top of the cooling cylinder 11 is rotated to be provided with a rotating shaft 111, and the lower end of the rotating shaft 111 is fixed with a scraper 112 in contact with the surface of the distribution plate 17.
  • the upper end of 111 is fixedly provided with rotating handle 113, and the top of cooling tube 11 is provided with the cleaning hole that is convenient to cleaning distribution plate 17, and the opening and closing of cleaning hole is provided with cover plate 114.
  • the gas-liquid mixing unit 2 includes a mixer main body 21 and a second spray assembly 22 arranged inside the mixer main body 21.
  • the mixer main body 21 is generally conical, and the upper end of the mixer main body 21 is provided with two liquid inlets at intervals. 211, the upper end of the mixer main body 21 is located between the two liquid inlets 211 and is provided with an air inlet 212 communicating with the slow flow cylinder 12, and the lower end of the mixer main body 21 is provided with a liquid outlet 213 communicating with the separation unit 3
  • the second shower assembly 22 includes a second shower pipe 221 and a number of second shower heads 222, the second shower pipe 221 is in the shape of a semicircle, the inner diameter of the second shower pipe 221 gradually decreases, and the second shower pipe The end with a larger inner diameter of 221 communicates with a liquid inlet 211 , and several second spray heads 222 are evenly spaced and obliquely arranged on the side of the second spray pipe 221 close to the inner wall of the mixer main body 21
  • a cone 23 is provided inside the mixer main body 21 below the two second spray assemblies 22, and at least two connecting rods 231 are arranged on the circumference of the cone 23, and the cone 23 is connected to the
  • the main body 21 of the mixer is fixedly connected, and the liquid outlet 213 is fixed with a liquid dispensing block 24 , and a plurality of liquid distributing holes 241 are opened through the liquid distributing block 24 , and the liquid distributing holes 241 are set downward in a tapered shape.
  • the first pumping assembly 4 includes a first liquid pumping pipeline 41, a first liquid pumping body 42 communicated with the first liquid pumping pipeline 41, and a first liquid separating pipeline 43.
  • the first liquid pumping pipeline One end of 41 communicates with the lower end of the separation unit 3, and the other end of the first pumping pipeline 41 communicates with the first liquid inlet 18 and the second liquid inlet 19 via two first liquid distribution pipelines 43, respectively. .
  • the liquid storage tank 5 is connected with the gas-liquid mixing unit 2 and the separation unit 3, and the purification liquid in the liquid storage tank 5 is drawn into the gas-liquid mixing unit 2 to strengthen the contact area with the waste gas and improve the purification of the waste gas by the purification liquid
  • the purification liquid in the separation unit 3 can be pumped into the liquid storage tank 5, so that the purification liquid can be recycled in the purification device without constantly replenishing new purification Liquid, effectively reducing the cost of purification.
  • One end of the second liquid suction pipeline 61 communicates with the lower end of the liquid storage tank 5
  • the other end of the second liquid suction pipeline 61 communicates with the two liquid inlets 211 via two second liquid distribution pipelines 63 .
  • the third pumping assembly 7 includes a third liquid pumping pipeline 71 and a third liquid pumping pump body 72 communicated with the third liquid pumping pipeline 71, one end of the third liquid pumping pipeline 71 is connected to the liquid storage tank 5 The lower end of the third pumping pipeline 71 is communicated with the lower end of the separation unit 3 .
  • the liquid seal assembly 8 includes a liquid seal tank 81 and an air guide tube 82.
  • the side wall of the cooling cylinder 11 is also provided with a connecting nozzle 10 communicating with the first cooling cavity 14.
  • One end of the air guide tube 82 is connected to the connecting nozzle 10
  • the other end of the air guide tube 82 extends into the liquid seal tank 81 and is located below the liquid level of the purification liquid.
  • the side wall at the lower end of the separation unit 3 is provided with a liquid level sensor 31 and a processor 32, the liquid level sensor 31, the processor 32 and the third The liquid suction pump bodies 72 are electrically connected.
  • the processor 32 controls the third pump body 72 to pump the purified liquid in the separation unit 3 into the liquid storage tank 5 .
  • the lower end of the separation unit 3 is also connected with a fourth pump body 33 and a pH sensor 34, between the pH sensor 34, the fourth pump body 33 and the processor 32 Electrically connected, when the pH sensor 34 detects that the purified liquid reaches a certain pH value, the fourth pump body 33 can discharge the purified liquid from the lower end of the separation unit 3, thereby replacing it with a new purified liquid.
  • the exhaust gas enters the first cooling cavity 14 through the exhaust gas input port 16, and under the action of the first liquid pump body 42, the purified liquid in the separation unit 3 is introduced into the first spray pipe 131, A number of first nozzles 132 spray down the purification liquid to contact the rising waste gas for cooling and purification; at the same time, the waste gas also enters into the slow flow cylinder 12 through the slow flow cylinder 12 and enters through the second liquid inlet nozzle 19
  • the cooling liquid falls into the inside of the slow flow cylinder 12 through the water hole 171 on the distribution plate 17, and after the purification liquid dripped from the distribution plate 17 contacts the exhaust gas, it is cooled and purified again; the exhaust gas and the purification liquid pass through
  • the air inlet 212 on the mixer main body 21 enters into the mixer main body 21, and under the action of the second liquid suction pump body 62, the purified liquid in the liquid storage tank 5 is introduced into the second spray pipe 221, and several The second nozzle 222 sprays the purification liquid downward to form a swirling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Treating Waste Gases (AREA)

Abstract

L'invention concerne un appareil de traitement de gaz d'échappement, comprenant une unité de condensation (1) pour refroidir un gaz d'échappement, une unité de mélange gaz-liquide (2) pour mélanger le gaz d'échappement avec un liquide de purification pour former un état d'écoulement turbulent, et une unité de séparation (3) pour séparer les gaz d'échappement du liquide de purification. L'unité de mélange gaz-liquide (2) est en communication avec l'unité de condensation (1) et l'unité de séparation (3), respectivement ; l'unité de condensation (1) est en communication avec l'extrémité inférieure de l'unité de séparation (3) au moyen d'un premier ensemble d'extraction de liquide (4), de telle sorte que le liquide de purification forme un chemin de circulation entre l'unité de condensation (1), l'unité de mélange gaz-liquide (2), et l'unité de séparation (3). L'appareil résout les problèmes selon lesquels, lorsque des appareils de lavage existants effectuent un traitement de purification sur un gaz résiduaire, un nouveau liquide de purification doit être complété en continu, et si une durée lorsque le gaz résiduaire est en contact avec le liquide de purification est court et que la zone de contact est petite, l'efficacité de purification faible et les coûts de production élevés sont facilement provoqués.
PCT/CN2021/103657 2021-06-25 2021-06-30 Appareil de traitement de gaz d'échappement WO2022267090A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110713078.8A CN113413748A (zh) 2021-06-25 2021-06-25 一种废气处理装置
CN202110713078.8 2021-06-25

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WO2022267090A1 true WO2022267090A1 (fr) 2022-12-29

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Citations (8)

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JP2006212553A (ja) * 2005-02-04 2006-08-17 Daikin Ind Ltd 気体浄化装置
CN2835826Y (zh) * 2004-07-14 2006-11-08 邬阳乐 一种新型烟气净化设备
CN201235262Y (zh) * 2008-07-30 2009-05-13 何健康 用于钠化焙烧炼钒工艺的废气多功能处理器
CN104226074A (zh) * 2014-09-24 2014-12-24 中国恩菲工程技术有限公司 含酸尾气洗涤装置
CN108654346A (zh) * 2017-03-31 2018-10-16 宝山钢铁股份有限公司 一种盐酸酸雾净化处理装置
CN209451598U (zh) * 2019-01-18 2019-10-01 山东福尔特种设备有限公司 一种尾气吸收塔液体分布装置
CN212818846U (zh) * 2020-07-03 2021-03-30 焦作新景科技有限公司 乙烯基醚类催化生产用乙炔气的降温除尘装置

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GB2402087B (en) * 2002-03-01 2005-10-05 Oiko Group Ltd Device and method for removing pollutants from exhaust gases
CN110624356A (zh) * 2018-06-21 2019-12-31 东泰高科装备科技有限公司 废气处理装置、真空镀膜系统以及废气处理装置的操作方法
CN112546801B (zh) * 2020-11-04 2022-09-27 山东穗和环境技术有限公司 一种烟气脱硫脱硝脱白设备

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1583227A (zh) * 2004-06-08 2005-02-23 沈福昌 废气净化处理方法及装置
CN2835826Y (zh) * 2004-07-14 2006-11-08 邬阳乐 一种新型烟气净化设备
JP2006212553A (ja) * 2005-02-04 2006-08-17 Daikin Ind Ltd 気体浄化装置
CN201235262Y (zh) * 2008-07-30 2009-05-13 何健康 用于钠化焙烧炼钒工艺的废气多功能处理器
CN104226074A (zh) * 2014-09-24 2014-12-24 中国恩菲工程技术有限公司 含酸尾气洗涤装置
CN108654346A (zh) * 2017-03-31 2018-10-16 宝山钢铁股份有限公司 一种盐酸酸雾净化处理装置
CN209451598U (zh) * 2019-01-18 2019-10-01 山东福尔特种设备有限公司 一种尾气吸收塔液体分布装置
CN212818846U (zh) * 2020-07-03 2021-03-30 焦作新景科技有限公司 乙烯基醚类催化生产用乙炔气的降温除尘装置

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