JP2014156821A5 - - Google Patents
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- Publication number
- JP2014156821A5 JP2014156821A5 JP2013028082A JP2013028082A JP2014156821A5 JP 2014156821 A5 JP2014156821 A5 JP 2014156821A5 JP 2013028082 A JP2013028082 A JP 2013028082A JP 2013028082 A JP2013028082 A JP 2013028082A JP 2014156821 A5 JP2014156821 A5 JP 2014156821A5
- Authority
- JP
- Japan
- Prior art keywords
- reducing agent
- catalyst layer
- exhaust gas
- denitration catalyst
- ethanol
- 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.)
- Granted
Links
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 239000003638 reducing agent Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Description
下記の表１に、排ガス源２１から排気通路２２に導入した排ガスの温度と、還元剤供給管２３より液体エタノールを排気通路２２内に直接供給した後の脱硝触媒層２４入口の排ガス温度をあわせて示した。
Table 1 below shows the temperature of the exhaust gas introduced from the exhaust gas source 21 into the exhaust passage 22 and the exhaust gas temperature at the inlet of the denitration catalyst layer 24 after liquid ethanol is directly supplied into the exhaust passage 22 from the reducing agent supply pipe 23. Showed.
これに対し、比較例１によれば、脱硝触媒層２４の上流側の排気通路２２に、エタノールよりなる還元剤を液体の状態で直接導入し、導入から脱硝触媒層２４に到達するまでの間にエタノールよりなる還元剤を気化させているため、還元剤の気化熱により排ガスの温度低下が生じ、脱硝触媒層４における触媒の脱硝性能が低下するという問題が生じた。 On the other hand, according to Comparative Example 1, a reducing agent made of ethanol is directly introduced into the exhaust passage 22 upstream of the denitration catalyst layer 24 in a liquid state, and the period from the introduction to the denitration catalyst layer 24 is reached. since the vaporized reducing agent consisting of ethanol, a temperature drop of the exhaust gas heat of vaporization of the reducing agent occurs, the denitration performance of the catalyst in the denitration catalyst layer 4 occurs lowered.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013028082A JP6140470B2 (en) | 2013-02-15 | 2013-02-15 | Exhaust gas purification system |
| PCT/JP2014/053160 WO2014126090A1 (en) | 2013-02-15 | 2014-02-12 | Exhaust gas purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013028082A JP6140470B2 (en) | 2013-02-15 | 2013-02-15 | Exhaust gas purification system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2014156821A JP2014156821A (en) | 2014-08-28 |
| JP2014156821A5 true JP2014156821A5 (en) | 2016-03-03 |
| JP6140470B2 JP6140470B2 (en) | 2017-05-31 |
Family
ID=51354090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2013028082A Active JP6140470B2 (en) | 2013-02-15 | 2013-02-15 | Exhaust gas purification system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6140470B2 (en) |
| WO (1) | WO2014126090A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201421869D0 (en) * | 2014-12-09 | 2015-01-21 | Delphi International Operations Luxembourg S.�.R.L. | SCR dosing system |
| CN112879126B (en) * | 2021-01-21 | 2022-05-13 | 天津大学 | Non-catalytic double-reducing agent NOx removal method and device |
| US11649761B1 (en) | 2021-12-22 | 2023-05-16 | Caterpillar Inc. | Systems for methanol vaporization |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05272331A (en) * | 1992-03-25 | 1993-10-19 | Hino Motors Ltd | Exhaust emission control device and reducing agent supply method and device used therein |
| JPH09267025A (en) * | 1996-03-29 | 1997-10-14 | Kawasaki Heavy Ind Ltd | Supplying method of reducing agent for denitrification of exhaust gas |
| JP4917208B2 (en) * | 2001-01-22 | 2012-04-18 | 川崎重工業株式会社 | Method and apparatus for supplying liquid reducing agent for denitration apparatus |
| JP4888480B2 (en) * | 2008-12-15 | 2012-02-29 | 株式会社デンソー | Control device for exhaust purification system |
| JP5804090B2 (en) * | 2012-02-03 | 2015-11-04 | トヨタ自動車株式会社 | Exhaust gas purification device for internal combustion engine |
-
2013
- 2013-02-15 JP JP2013028082A patent/JP6140470B2/en active Active
-
2014
- 2014-02-12 WO PCT/JP2014/053160 patent/WO2014126090A1/en active Application Filing
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