JPS6252127B2 - - Google Patents
Info
- Publication number
- JPS6252127B2 JPS6252127B2 JP1306782A JP1306782A JPS6252127B2 JP S6252127 B2 JPS6252127 B2 JP S6252127B2 JP 1306782 A JP1306782 A JP 1306782A JP 1306782 A JP1306782 A JP 1306782A JP S6252127 B2 JPS6252127 B2 JP S6252127B2
- Authority
- JP
- Japan
- Prior art keywords
- overbody
- fine particles
- exhaust gas
- water
- captured
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000010419 fine particle Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000005749 Copper compound Substances 0.000 claims description 4
- 150000001339 alkali metal compounds Chemical class 0.000 claims description 4
- 150000001880 copper compounds Chemical class 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
【発明の詳細な説明】
本願は、デイゼル機関等の燃焼装置から排出さ
れる排気ガス中の微粒子の処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present application relates to a method for treating particulates in exhaust gas discharged from a combustion device such as a diesel engine.
排気ガス中には、主としてカーボン粒子から成
る微粒子が含まれており、これを分離除去する必
要がある。しかしながら、微粒子の粒径は、サブ
ミクロンオーダであり、通常の材を用いた過
方法では早期目づまりを生起し永続的な使用に適
しない。そのため、材に捕捉した微粒子を周期
的に燃焼させ材を再生するようにした処理方法
が提案されている。しかしこの場合でも、微粒子
の燃焼温度にまで昇温させるのに困難がともなう
という欠点がある。そこで、アルカリ金属化学物
等の助燃剤を材に含浸させ、これに水を噴射さ
せて、補捉した微粒子の着火温度を低下させると
ともに燃焼性を向上させ材の再生を図るように
した処理方法が提案されるに至つている（特願昭
56−46841号）。 The exhaust gas contains fine particles mainly consisting of carbon particles, which need to be separated and removed. However, the particle size of the fine particles is on the order of submicrons, and the method using ordinary materials causes early clogging and is not suitable for permanent use. Therefore, a treatment method has been proposed in which the fine particles trapped in the material are periodically burned to regenerate the material. However, even in this case, there is a drawback that it is difficult to raise the temperature to the combustion temperature of the fine particles. Therefore, a treatment method has been developed in which the material is impregnated with a combustion improver such as an alkali metal chemical, and water is injected into the material to lower the ignition temperature of the captured particulates, improve combustibility, and regenerate the material. has come to be proposed (Tokugansho
56-46841).
この処理方法では、次のような欠点が生じる。
すなわち、微粒子を構成するカーボンは、撥水性
を有しており、水が均等に付着浸透せず、したが
つて上記着火温度の低下および燃焼性の向上が十
分に達成されないのである。 This processing method has the following drawbacks.
That is, the carbon constituting the fine particles has water repellency, and water does not adhere to and penetrate the carbon particles evenly, so that the above-mentioned reduction in ignition temperature and improvement in combustibility cannot be sufficiently achieved.
本願は、上記欠点を解消させた排気ガス中の微
粒子の処理方法を提供するものである。 The present application provides a method for treating particulates in exhaust gas that eliminates the above drawbacks.
本発明の処理方法を図示の装置により説明す
る。図は、本発明を実施するための装置であつ
て、燃焼装置すなわち内燃機関１、排気管２およ
びこれに連結する過器３、水噴射装置４そして
制御装置５から成る。過器３は、耐熱性で微細
孔の過体６を有し、該過体には、助燃剤７
が含浸されている。過体６は、たとえばセラミ
ツク製のハニカム担体から成り、助燃剤７は、
Li，Na，Ca、等のアルカリ金属の水酸化物また
は酸化物から成るアルカリ金属化合物あるいは
CuCl，CuCl2，Cu（OH）2、等の銅化合物であ
る。水噴射装置４は、水タンク８、駆動装置９お
よび圧送ポンプ１０、そして流量制御部１１を設
けた噴射管１２の先端１３は過器３内の過体
６前面に位置し、駆動装置９および流量制御部１
１は制御装置５に連結される。制御装置５は、駆
動装置９および流量制御部１１をコントロールす
るためのものであつて、排気管２内の排気圧を感
知する圧力センサ１４と回転数検知部１５に連結
する。水タンク８内には、界面活性剤が混入され
る。 The processing method of the present invention will be explained using the illustrated apparatus. The figure shows an apparatus for carrying out the present invention, which is comprised of a combustion device, that is, an internal combustion engine 1, an exhaust pipe 2, an exhaust pipe 3 connected thereto, a water injection device 4, and a control device 5. The overbody 3 has a heat-resistant overbody 6 with fine pores, and the overbody contains a combustion improver 7.
is impregnated. The overbody 6 is made of, for example, a ceramic honeycomb carrier, and the combustion improver 7 is
Alkali metal compounds consisting of hydroxides or oxides of alkali metals such as Li, Na, Ca, etc.
These are copper compounds such as CuCl, CuCl 2 , Cu(OH) 2 , etc. The water injection device 4 includes a water tank 8, a drive device 9, a pressure pump 10, and a tip 13 of an injection pipe 12 provided with a flow rate control unit 11, which is located in front of the overbody 6 in the overbody 3, and the drive device 9 and Flow rate control section 1
1 is connected to a control device 5. The control device 5 is for controlling the drive device 9 and the flow rate control section 11, and is connected to a pressure sensor 14 that senses the exhaust pressure in the exhaust pipe 2 and a rotation speed detection section 15. A surfactant is mixed into the water tank 8.
内燃機関１からの排気ガスは、過器３を流通
する間にカーボン粒子から成る微粒子が過体６
により捕捉され、大気へ放出される。微粒子の捕
捉が進み過体６が所定の目づまり状態に達する
と、圧力センサ１４が排気管２内の排気圧を感知
し制御装置５を作動させて、圧送ポンプ１０を始
動させる。これにより、噴射管１２の先端１３か
ら水タンク８内の、界面活性剤を含有する水が噴
出し、過体６に捕捉された微粒子を湿潤させ
る。この際の噴出量は、流量制御部１１により制
御される。湿潤した微粒子は、過体６に含浸さ
れたアルカリ金属化合物あるいは銅化合物と接触
し水とでこれらの水溶液を形成し、所定温度（約
450℃）に達すると短時間で燃焼する。このよう
に比較的低温で燃焼するのは、カーボン微粒子が
前記化合物によつて改質され着火温度を低下させ
るためであると考えられる。過体６の微粒子が
焼失し排気管２内の排気圧が下ると、制御装置５
が作動し圧送ポンプ１０を停止させ水の噴出を止
める。 While the exhaust gas from the internal combustion engine 1 passes through the filter 3, fine particles consisting of carbon particles are collected in the filter 6.
is captured and released into the atmosphere. When the trapping of particles progresses and the overbody 6 reaches a predetermined clogging state, the pressure sensor 14 senses the exhaust pressure in the exhaust pipe 2 and activates the control device 5 to start the pressure pump 10. As a result, water containing a surfactant in the water tank 8 is ejected from the tip 13 of the injection pipe 12, and wets the fine particles captured by the overbody 6. The amount of ejection at this time is controlled by the flow rate control section 11. The wet fine particles come into contact with the alkali metal compound or copper compound impregnated in the overbody 6, form an aqueous solution of these with water, and are heated to a predetermined temperature (approx.
450℃), it burns in a short time. The reason why the carbon particles burn at such a relatively low temperature is thought to be that the carbon particles are modified by the compound and the ignition temperature is lowered. When the fine particles in the excess body 6 are burned out and the exhaust pressure in the exhaust pipe 2 decreases, the control device 5
is activated, the pressure pump 10 is stopped, and the jetting of water is stopped.
以上のように本発明の方法は、予じめアルカリ
金属化合物または銅化合物の助燃剤を含浸させた
微細孔の耐熱過体にカーボン粒子から成る微
粒子を捕捉し所定目づまり状態下で、これに、界
面活性剤を含有する水を噴射させるものであるか
ら、捕捉したカーボン微粒子に水を確実に付着、
浸透させることができ、助燃剤を十分機能させ、
フイルタ再生を良好にする。 As described above, in the method of the present invention, fine particles consisting of carbon particles are captured in a heat-resistant overbody with fine pores impregnated with a combustion improver such as an alkali metal compound or a copper compound in advance, and the fine particles are captured under a predetermined clogging condition. , because it injects water containing a surfactant, ensuring that the water adheres to the captured carbon particles.
It is possible to penetrate the combustion aid, allowing the combustion improver to fully function.
Improve filter regeneration.
図は、本発明の方法を実施するための装置を示
す。
１……内燃機関、２……排気管、３……過
器、４……水噴射装置、６……過体。
The figure shows an apparatus for carrying out the method of the invention. 1... Internal combustion engine, 2... Exhaust pipe, 3... Overbody, 4... Water injection device, 6... Overbody.
Claims (1)
た耐熱過体に排気ガスを通しカーボン粒子から
成る微粒子を捕捉し、過体が所定の目づまり状
態に達した時、過体に、界面活性剤を含有する
水を噴射し、過体を加熱して捕捉した微粒子を
燃焼させる排気ガス中の微粒子の処理方法。1 Exhaust gas is passed through a heat-resistant overbody impregnated with an alkali metal compound or a copper compound to capture fine particles consisting of carbon particles, and when the overbody reaches a predetermined clogging state, the overbody contains a surfactant. A method for treating particulates in exhaust gas that injects water to heat the excess body and burn the captured particulates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57013067A JPS58131118A (en) | 1982-01-29 | 1982-01-29 | Treatment of fine particle in exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57013067A JPS58131118A (en) | 1982-01-29 | 1982-01-29 | Treatment of fine particle in exhaust gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58131118A JPS58131118A (en) | 1983-08-04 |
| JPS6252127B2 true JPS6252127B2 (en) | 1987-11-04 |
Family
ID=11822789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57013067A Granted JPS58131118A (en) | 1982-01-29 | 1982-01-29 | Treatment of fine particle in exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58131118A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6187514U (en) * | 1984-11-12 | 1986-06-07 |
-
1982
- 1982-01-29 JP JP57013067A patent/JPS58131118A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58131118A (en) | 1983-08-04 |
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