WO2003067045A1 - Systeme de regulation d'emission de gaz d'echappement - Google Patents

Systeme de regulation d'emission de gaz d'echappement Download PDF

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Publication number
WO2003067045A1
WO2003067045A1 PCT/JP2002/001022 JP0201022W WO03067045A1 WO 2003067045 A1 WO2003067045 A1 WO 2003067045A1 JP 0201022 W JP0201022 W JP 0201022W WO 03067045 A1 WO03067045 A1 WO 03067045A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
tank
water
exhaust
activated carbon
Prior art date
Application number
PCT/JP2002/001022
Other languages
English (en)
Japanese (ja)
Inventor
Yukio Toyama
Original Assignee
Yukio Toyama
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yukio Toyama filed Critical Yukio Toyama
Priority to PCT/JP2002/001022 priority Critical patent/WO2003067045A1/fr
Publication of WO2003067045A1 publication Critical patent/WO2003067045A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • B01D47/021—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2370/00—Selection of materials for exhaust purification
    • F01N2370/40—Activated carbon or charcoal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to an exhaust gas purifying apparatus that purifies exhaust gas from a combustion apparatus, thereby preventing harmful substances from being discharged into the atmosphere, and improving exhaust gas pollution.
  • diesel cars in particular have the advantage that fuel (light oil) is inexpensive, energy efficient, and their service life is extremely long compared to gasoline cars. Therefore, despite their impact on exhaust gas pollution, diesel engines are widely used as engines for large vehicles such as trucks and buses, and the number of diesel engines used in various fields in the industrial field has been increasing. Is increasing year by year.
  • an exhaust gas purification device generally refers to a device that removes suspended particulate matter in exhaust gas from diesel vehicles. For example, installing a muffler instead to burn black smoke to the maximum and reduce the amount of suspended particulate matter by about 80%, resulting in low pollution of diesel vehicles It is.
  • Such an exhaust gas purification device can be manufactured for about 200,000 yen if a structure using a catalyst is adopted.
  • the sulfur contained in the diesel diesel fuel corrodes the metal part of the exhaust gas purifying device (DPF) itself. It must be made of very expensive ceramic.
  • the exhaust gas purifying apparatus disclosed in Japanese Patent Application Laid-Open No. 7-189658 / 1994 and Japanese Patent Application Laid-Open No. 6-123217 separates and collects harmful substances such as dust containing SPM. Is possible, but its ability to remove other harmful substances such as N ⁇ x, SOx, and HC is not sufficient.
  • the exhaust gas purifying apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 7-224648 can remove NOx and SOx, but requires the use of a special aqueous solution, and is therefore troublesome to handle. Yes, maintenance costs are high. Furthermore, even if the two are simply combined, handling remains difficult as long as a special aqueous solution is used.
  • the present invention has been proposed in order to solve the above-mentioned problems of the prior art, and it is possible to reliably and efficiently reduce the emission of various harmful substances with an inexpensive and simple configuration.
  • the aim is to improve exhaust gas pollution promptly and contribute to environmental protection by providing easy-to-handle exhaust gas purification equipment. Disclosure of the invention
  • an exhaust gas purifying apparatus of the present invention includes a tank in which water is sealed, a connecting pipe for sending exhaust gas from a combustion device into the water in the tank, and a water pipe in the tank.
  • the exhaust gas from the combustion device is sent into the water from the connecting pipe, and harmful substances such as strongly acidic NO X and SOX come in contact with the alkaline limestone and become harmful. Sum, removed. Furthermore, when the exhaust gas passes through the mesh, the bubbles become finer and the contact area with water increases, so that dust such as SPM in the exhaust gas is efficiently captured in the water.
  • the purified exhaust gas is discharged to the outside via the exhaust stack.
  • the vibration of the second metal mesh having a fine mesh allows water and exhaust gas to be separated. Contact is promoted and particulate matter can be trapped more efficiently.
  • FIG. 1 is a side sectional view showing one embodiment of an exhaust gas purifying apparatus of the present invention. You.
  • FIG. 2 is a front sectional view of the embodiment of FIG.
  • FIG. 3 is a rear sectional view of the embodiment of FIG.
  • FIG. 4 is a front sectional view showing a net portion of the embodiment of FIG.
  • FIG. 5 is a front view showing the partition plate of the embodiment shown in FIG.
  • FIG. 6 is a perspective view showing the activated carbon filter of the first embodiment.
  • FIG. 7 is a transparent side view of the activated carbon filter of FIG.
  • FIG. 8 is a side sectional view of the activated carbon filter of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • the exhaust gas purifying apparatus of the present embodiment has an overall configuration as shown in FIGS. 1 to 3, and includes a tank 1, a connecting pipe 2, and an exhaust pipe 3. Inside the tank 1, limestone 4, activated carbon 5, wire mesh 6, and partition plate 7 are provided. Limestone 4 and activated carbon 5 are spread on the inner bottom of tank 1 so as to be mixed. As limestone 4, it is desirable to use Ryukyu limestone produced from the central and southern part of Okibashi main island. Further, in order to promote the reaction described later, it is preferable to use one obtained by increasing the calcined lime (CaO) component by firing.
  • CaO calcined lime
  • the wire mesh portion 6 is disposed at an intermediate portion in the height direction in the tank 1, and is constituted by a first wire mesh 6a and a second wire mesh 6b.
  • the first wire mesh 6a is coarse, and is provided two above and below at predetermined intervals.
  • the second wire mesh 6b is fine and is arranged so as to be folded between the two first wire meshes 6a as shown in FIG.
  • the partition plate 7 is a vertical plate having a large number of holes formed therein for allowing air to flow therethrough, and a plurality of the partition plates 7 are provided at predetermined intervals.
  • the tank 1 is filled with a predetermined amount of water 9 so that a space 8 filled with the atmosphere is provided.
  • the tank 1 is provided with a water inlet 1a for supplying water and a drain 1b for discharging water, and a level gauge 10 so that the internal water level can be checked from outside. Are arranged.
  • a connecting pipe 2 is inserted into the section, and an exhaust pipe 3 is provided at the upper part.
  • the connecting pipe 2 has one end connected to an exhaust port of an internal combustion engine A such as a diesel engine, and the other end inserted near the bottom of the tank 1.
  • a large number of exhaust holes 2 a are formed in the connecting pipe 2 in the tank 1 so that the exhaust gas is directed toward the limestone 4 and the activated carbon 5.
  • the exhaust stack 3 is connected with an activated carbon filter 11.
  • the activated carbon filter 11 is obtained by packing activated carbon 13 in a cylindrical container 12.
  • An introduction pipe 14 and a discharge pipe 15 are provided in the axial direction of the container 12.
  • the introduction pipe 14 has one end connected to the exhaust pipe 3 and the other end inserted into the activated carbon 13.
  • a plurality of holes 14 a for supplying the exhaust gas from the exhaust stack 3 to the activated carbon 13 are formed around the vicinity of the other end of the introduction pipe 14. Between the container 12 and the activated carbon 13, there is provided a gap 12 a through which the exhaust gas passing through the activated carbon 13 passes. Further, a space 12 c having a plurality of holes 12 b communicating with the gap 12 a is formed on the discharge pipe 15 side in the container 12, and the space 12 c is discharged. It communicates with tube 15.
  • the exhaust gas purifying apparatus of the present invention has the above-described configuration as an example. To be discharged to The details will be described below.
  • the exhaust gas discharged from the exhaust port of the internal combustion engine A to the connecting pipe 2 is discharged from the many exhaust holes 2a of the connecting pipe 2 arranged at the bottom of the tank 1 and the water 9 in the tank 1. And is sprayed against limestone 4. Then, the strongly acidic exhaust gas reacts and is neutralized by the alkaline limestone 4. At this time, calcium oxide (C a O) in the limestone 4 reacts with water to form a hydroxide hydroxide (C a (OH) 2 ), and harmful substances such as NO x and SO x a Removed from exhaust gas by reacting with (OH) 2 .
  • C a (OH) 2 reacts with nitrogen dioxide (N 0 2) calcium hydroxide (C a (OH) 2) , an expression that the calcium nitrate neutral (C a (N 0 3) 2), shown below.
  • sulfur dioxide (S0 2) is calcium hydroxide (Ca (OH) 2 )
  • CaSO calcium sulfite
  • the exhaust gas moves from the water 9 to the space portion 8, and when passing through the activated carbon filter 11 from the exhaust stack 3, the remaining harmful substances are captured and discharged to the atmosphere.
  • dust such as SPM trapped in the water 9 is adsorbed on a large number of pores of the activated carbon 5 arranged at the bottom of the tank 1 by stirring the water 9 with bubbles of exhaust gas.
  • the water 9 in which the harmful substances are dissolved is discharged from the drain port lb, is treated by a treatment device (not shown), and fresh water is newly supplied into the tank 1 from the water inlet port 1a.
  • a treatment device not shown
  • limestone 4 and activated carbon 5 to which dust such as SPM and substances generated by the reaction are attached and adsorbed are appropriately replaced according to the degree of contamination.
  • the harmful substances contained in the exhaust gas discharged from the internal combustion engine such as a diesel engine are discharged into the water 1 in the tank 1, the limestone 4, the activated carbon before being released into the atmosphere. 5 removes most of it.
  • the formation of bubbles and the contact between the water 9 and the exhaust gas are promoted by the coarse mesh first wire mesh 6 a and the fine mesh second wire mesh 6 b in the wire mesh portion 6.
  • the constituent materials required in the present embodiment are air, water, limestone, activated carbon, wire mesh, etc., which are safe and harmless and inexpensive or very easily available. All of the components are easy to handle without any danger, and are therefore easy to put into practical use.
  • Ryukyu limestone when Ryukyu limestone is used, it has many burrows because it is a stone that was deposited several hundred thousand years ago. Therefore, the harmful substance removing effect by the above reaction is high.
  • the particulate matter (SPM) captured in the water is adsorbed by the activated carbon 5, so that the cleanliness of the water can be easily maintained.
  • the activated carbon filter 11 also removes harmful substances remaining in the exhaust gas, so that the gas released to the outside can have a very high degree of cleanliness. Further, since the inside of the tank 1 is partitioned by a plurality of partition plates 7, even when the vehicle starts and stops, the water is prevented from being washed away.
  • the present invention is not limited to the above-described embodiment, and the material, shape, size, quantity, and the like of each member can be appropriately changed.
  • the material of the net portion not only metal but also other materials such as ceramic may be used.
  • the size of the mesh of the mesh is not limited to a specific size.
  • other materials such as nonwoven fabric and ceramic can be used instead of activated carbon or activated carbon filter, or other materials can be used together with activated carbon.
  • Limestone is not limited to Ryukyu limestone.
  • limestone or activated carbon at a place other than the bottom of the tank to more effectively contact the limestone / activated carbon with the exhaust gas and the stirred water.
  • limestone may be arranged on the net.
  • air bubbles can be generated in the entire area of the tank by branching the connection pipe into multiple sections or by changing the size and number of exhaust holes provided in the connection pipe at the root and tip of the connection pipe.
  • stirring fins may be installed in the water in the tank so as to further increase the chance of contact between the exhaust gas and water.
  • the inside of the tank is divided into a plurality of sections, and the exhaust gas is sequentially passed through each section, so that the processing described above is repeated a plurality of times, whereby the exhaust gas cleaning ability can be improved.
  • combustion device to which the present invention can be applied is not limited to a diesel engine, but can be used for various combustion devices such as other internal combustion engines, external combustion engines, incinerators, incinerators, and the like. Availability on the monkey t industry
  • an exhaust gas purifying apparatus which is cheap and has a simple configuration, can reliably and efficiently reduce the discharge amount of various harmful substances, and is easy to handle. It becomes possible. Therefore, the exhaust gas can be easily and reliably purified, so that the exhaust gas pollution can be promptly improved and the environment can be protected.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Treating Waste Gases (AREA)

Abstract

Cette invention porte sur un système de régulation d'émission de gaz d'échappement comprenant un réservoir (1) contenant de l'eau, un tuyau de raccordement (2) servant à acheminer les gaz d'échappement d'une chambre de combustion dans le réservoir (1), une section (6) de toile mécanique disposée dans l'eau dans le réservoir (1) et réduisant la taille des bulles dans les gaz d'échappement, et un tuyau d'échappement (3) servant à interconnecter le réservoir (1) et l'extérieur. La section (6) de toile mécanique comprend une première toile mécanique (6a) grossière et une seconde toile mécanique (6b) fine animées d'un mouvement alternatif par le gaz d'échappement. Un mélange de calcaire (4) servant à neutraliser le gaz d'échappement et un charbon actif (5) servant à adsorber la substance en particules est répandu sur la partie inférieure interne du réservoir (1). Une plaque (7) de séparation divise l'intérieur du réservoir (1) en une pluralité de sections. Le tuyau d'échappement (3) est couplé avec un filtre (11) à charbon actif.
PCT/JP2002/001022 2002-02-07 2002-02-07 Systeme de regulation d'emission de gaz d'echappement WO2003067045A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/001022 WO2003067045A1 (fr) 2002-02-07 2002-02-07 Systeme de regulation d'emission de gaz d'echappement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/001022 WO2003067045A1 (fr) 2002-02-07 2002-02-07 Systeme de regulation d'emission de gaz d'echappement

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103557052A (zh) * 2013-11-06 2014-02-05 苏州佑瑞检测技术有限公司 一种可持续型汽车尾气净化装置
CN104989497A (zh) * 2015-06-08 2015-10-21 含山县全兴内燃机配件有限公司 一种高效过滤中和缓冲系统
CN105032146A (zh) * 2011-02-01 2015-11-11 沙文环境与基础设施有限公司 排放控制系统
CN105363300A (zh) * 2015-11-26 2016-03-02 马一先 一种烟尘过滤机
CN107930322A (zh) * 2017-11-29 2018-04-20 宁夏三和日升化工有限公司 一种炉窑烟气脱硫除尘系统及方法
CN113521937A (zh) * 2020-04-14 2021-10-22 骆用玲 一种大气污染防治设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4734642U (fr) * 1971-05-19 1972-12-18
JPH0329655U (fr) * 1989-07-31 1991-03-25
JP2001276546A (ja) * 2000-03-29 2001-10-09 Kiyomitsu Ono 煤塵等除去装置
JP2001317324A (ja) * 2000-05-09 2001-11-16 Fuji Heavy Ind Ltd エンジンのブローバイガス処理装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4734642U (fr) * 1971-05-19 1972-12-18
JPH0329655U (fr) * 1989-07-31 1991-03-25
JP2001276546A (ja) * 2000-03-29 2001-10-09 Kiyomitsu Ono 煤塵等除去装置
JP2001317324A (ja) * 2000-05-09 2001-11-16 Fuji Heavy Ind Ltd エンジンのブローバイガス処理装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105032146A (zh) * 2011-02-01 2015-11-11 沙文环境与基础设施有限公司 排放控制系统
CN105032146B (zh) * 2011-02-01 2017-10-13 沙文环境与基础设施有限公司 排放控制系统
CN103557052A (zh) * 2013-11-06 2014-02-05 苏州佑瑞检测技术有限公司 一种可持续型汽车尾气净化装置
CN104989497A (zh) * 2015-06-08 2015-10-21 含山县全兴内燃机配件有限公司 一种高效过滤中和缓冲系统
CN105363300A (zh) * 2015-11-26 2016-03-02 马一先 一种烟尘过滤机
CN107930322A (zh) * 2017-11-29 2018-04-20 宁夏三和日升化工有限公司 一种炉窑烟气脱硫除尘系统及方法
CN113521937A (zh) * 2020-04-14 2021-10-22 骆用玲 一种大气污染防治设备

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