JPS59134312A - Exhaust emission control device for diesel engine - Google Patents

Exhaust emission control device for diesel engine

Info

Publication number
JPS59134312A
JPS59134312A JP58006590A JP659083A JPS59134312A JP S59134312 A JPS59134312 A JP S59134312A JP 58006590 A JP58006590 A JP 58006590A JP 659083 A JP659083 A JP 659083A JP S59134312 A JPS59134312 A JP S59134312A
Authority
JP
Japan
Prior art keywords
emission control
diesel engine
exhaust gas
sulfur
sulfur trioxide
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP58006590A
Other languages
Japanese (ja)
Inventor
Kenji Hori
堀　健次
Katsuyuki Tsuji
勝之 辻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
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 Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to JP58006590A priority Critical patent/JPS59134312A/en
Publication of JPS59134312A publication Critical patent/JPS59134312A/en
Pending legal-status Critical Current

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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/085—Sulfur or 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
    • B01D53/86—Catalytic processes
    • B01D53/8603—Removing sulfur compounds
    • B01D53/8609—Sulfur oxides
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/12—Combinations of different methods of purification absorption or adsorption, and catalytic conversion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

PURPOSE:To aim at improvements in the capacity of exhaust emission control, by making sulfur dioxide turn to sulfur trioxide, while having the latter adsorbed to a porous substance, in case of an exhaust emission control device capable of reducing pollution substances in exhaust gas. CONSTITUTION:At the upstream side of a mulffer 5 in the exhaust pipe of a Diesel engine 2, there are provided in order with a catalyzer A for HC, CO and particulate emission control use, zirconia excellent in sulfur trioxide adsorption, porous materials such as active carbon titania and an adsorbent material B coated with these porous materials. Sulfur dioxide SO2 is oxidized by the catalyzer A and therefore turned to sulfur trioxide SO3, thus absorbed by the adsorbent material B.

Description

【発明の詳細な説明】 本発明はガス特に排気ガス中に含まれている煙および有
害成分の浄化に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the purification of smoke and harmful components contained in gases, particularly exhaust gases.

ディーゼル排気ガスを触媒で浄化する時間順となるのは
、燃料に含まれている硫黄Ｓが燃焼して２酸化硫黄Ｓ０
２となり、このＳ０２が触媒上で酸化され、３酸化硫黄
Ｓ０３として排出される。このＳ０３は排ガス中の水分
を吸収し硫酸Ｈ２ＳＯ４となるが、これ自身有害である
とともに・ぐティキーレート（以下Ｐｅｔと略称）とし
て計測され、かえってＰｅｔがふえる結果となシ、排ガ
スのＰｃｔ規制を満足しなくなる。The time order in which diesel exhaust gas is purified by a catalyst is that the sulfur S contained in the fuel burns and becomes sulfur dioxide SO.
2, and this S02 is oxidized on the catalyst and discharged as sulfur trioxide S03. This S03 absorbs moisture in the exhaust gas and becomes sulfuric acid H2SO4, which is itself harmful and is measured as a ``Pet'' rate (hereinafter abbreviated as ``Pet''), which results in an increase in ``Pet'', which requires Pct regulations for exhaust gas. become dissatisfied.

なお現況ではＳＯにおかされにくクシかもＳ０６吸着能
力の高い触媒はない。従って現在では触媒によるＰｅｔ
の生成を押さえるため触媒活性を低くして使用している
。Currently, there are no catalysts that are not easily affected by SO and have a high ability to adsorb SO6. Therefore, at present, Pet
In order to suppress the formation of , the catalyst activity is lowered.

本発明の目的は、前記問題点を解決し、酸化触媒よシの
ＳＯ３をＳＯ３の吸着特性の秀れた物質Ｂによシ捕捉除
去し、排ガス浄化をはかったディーゼルエンジンの排ガ
ス浄化装置を提供するにある。An object of the present invention is to solve the above-mentioned problems and provide an exhaust gas purification device for a diesel engine that purifies exhaust gas by trapping and removing SO3 from an oxidation catalyst using a substance B having excellent SO3 adsorption properties. There is something to do.

本発明に係るディーゼルエンジンの排ガス浄化装置は、
燃料内に含まれた硫黄Ｓが燃焼してできたＳ０２が触媒
で酸化されＳ０３となり、このＳ０３をＳ０３の吸着性
が秀れた物質Ｂによシ捕捉除去し、前記目的を達成でき
るように構成したものである。The diesel engine exhaust gas purification device according to the present invention includes:
S02 produced by combustion of sulfur S contained in the fuel is oxidized to S03 by a catalyst, and this S03 is captured and removed by substance B, which has excellent adsorption properties for S03, thereby achieving the above purpose. It is composed of

以下本発明の実施例を添付図面に基づいて説明する。Embodiments of the present invention will be described below based on the accompanying drawings.

第１図で本発明の第１実施例で１はエアクリーナ、２は
ディーゼルエンジン、３はＨＣ、Ｃｏ　、　Ｐｅｔ浄化
触媒Ａ、４は３酸化硫黄（Ｈ２Ｓ０４）の吸着性の秀れ
た吸着用拘膚ＢでγＡｔ２０３．ジルコニア、活性炭ｒ
　ＴｌＯ２などの多孔性物質および（または）それを塗
布したもの、５はマフラである。In Figure 1, in the first embodiment of the present invention, 1 is an air cleaner, 2 is a diesel engine, 3 is an HC, Co, and Pet purification catalyst A, and 4 is an adsorption binder with excellent adsorption properties for sulfur trioxide (H2S04). γAt203. in skin B. Zirconia, activated carbon
A porous material such as TlO2 and/or a material coated with it, 5 is a muffler.

次に前記第１実施例の作用について述べる。Next, the operation of the first embodiment will be described.

エンジン２よシ排出された排気ガス中に含まれたＳ０２
は、触媒Ａ上で酸化されＳ０３として排出される。さら
にこの８０３は排ガス中の水分を吸収しＨ２ＳＯ４とな
る。本発明では、このＳ０３をＳ０３の吸着性の秀れた
物質で捕捉除去し、ディーゼルエンジンの排ガスの浄化
をはかったものである。S02 contained in exhaust gas emitted from engine 2
is oxidized on catalyst A and discharged as S03. Furthermore, this 803 absorbs moisture in the exhaust gas and becomes H2SO4. The present invention aims to purify diesel engine exhaust gas by trapping and removing this S03 with a substance that has excellent S03 adsorption properties.

第２図は第２実施例で第１図の第１実施例と異シ酸化触
媒Ａと吸着用担体Ｂの各ベレット６が一つのボックス内
の２枚の板の間にいっしょに詰めこまれたもの、第３図
は第３実施例で少くとも１組の酸化触媒ＡとＳＯ３吸着
用担体担体交互に１個のボックス内に挿入されたもので
ある。Figure 2 shows a second embodiment, in which the pellets 6 of the different oxide oxidation catalyst A and the adsorption carrier B are packed together between two plates in one box, in contrast to the first embodiment shown in Figure 1. , FIG. 3 shows a third embodiment in which at least one set of oxidation catalyst A and a carrier for SO3 adsorption are alternately inserted into one box.

第４図は第４実施例で第１図はＳＯ３吸着用担体担体マ
フラ４内にはめ込んだもので、これらの第２乃至第４実
施例の作用効果は第１実施例と殆んど同じである。Fig. 4 shows the fourth embodiment, and Fig. 1 shows the carrier for SO3 adsorption fitted into the muffler 4, and the effects of these second to fourth embodiments are almost the same as the first embodiment. be.

前述のとおシ、本発明に係るディーゼルエンジンの排ガ
ス浄化装置は酸化触媒上でＳ０２からＳ０３と酸化され
、このＳ０３をＳ０６の吸着特性の秀れた多孔性物質Ｂ
により捕捉除去するようにしたので、エンジンの排ガス
を浄化する効果がある。As mentioned above, the diesel engine exhaust gas purification device according to the present invention oxidizes S02 to S03 on an oxidation catalyst, and converts this S03 into a porous material B having excellent adsorption properties for S06.
Since it is designed to capture and remove the gas, it has the effect of purifying engine exhaust gas.

【図面の簡単な説明】[Brief explanation of drawings]

第１図乃至第４図は本発明のディーゼルエンジンの排ガ
ス浄化装置に係るもので、第１図は第１実施例の概要図
、第２図は第２実施例の触媒箱の断面図、第３図は第３
実施例の触媒箱の断面図、第４図は第４実施例の概要図
である。1 to 4 relate to the exhaust gas purification device for a diesel engine according to the present invention. FIG. 1 is a schematic diagram of a first embodiment, FIG. 2 is a sectional view of a catalyst box of a second embodiment, and FIG. Figure 3 is the third
A sectional view of the catalyst box of the embodiment, and FIG. 4 is a schematic diagram of the fourth embodiment.

Claims (1)

【特許請求の範囲】[Claims] 排ガスに含まれる汚染物質を減少させる装置を有するも
のにおいて、酸化触媒Ａと、３酸化硫黄の吸着特性の秀
れた多孔性物質Ｂとを有し、２酸化硫黄が触媒Ａにより
３酸化硫黄となり次いで物質Ｂによシ３酸化硫黄が吸着
除去されるように構成されたエンジンの排ガス浄化装置
。A device that reduces pollutants contained in exhaust gas has an oxidation catalyst A and a porous material B that has excellent adsorption properties for sulfur trioxide, and sulfur dioxide is converted to sulfur trioxide by the catalyst A. Next, an engine exhaust gas purification device is configured so that substance B adsorbs and removes sulfur oxide.
JP58006590A 1983-01-20 1983-01-20 Exhaust emission control device for diesel engine Pending JPS59134312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58006590A JPS59134312A (en) 1983-01-20 1983-01-20 Exhaust emission control device for diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58006590A JPS59134312A (en) 1983-01-20 1983-01-20 Exhaust emission control device for diesel engine

Publications (1)

Publication Number Publication Date
JPS59134312A true JPS59134312A (en) 1984-08-02

Family

ID=11642542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58006590A Pending JPS59134312A (en) 1983-01-20 1983-01-20 Exhaust emission control device for diesel engine

Country Status (1)

Country Link
JP (1) JPS59134312A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0815925A1 (en) * 1996-07-04 1998-01-07 Toyota Jidosha Kabushiki Kaisha Apparatus for purifying exhaust gas emitted from diesel engine
CN105587381A (en) * 2015-10-11 2016-05-18 李建坤 Tail gas purifying and silencing device for engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0815925A1 (en) * 1996-07-04 1998-01-07 Toyota Jidosha Kabushiki Kaisha Apparatus for purifying exhaust gas emitted from diesel engine
CN105587381A (en) * 2015-10-11 2016-05-18 李建坤 Tail gas purifying and silencing device for engine

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