| 发明名称 |
METHOD FOR PURIFYING EXHAUST GAS |
| 摘要 |
The present invention provide a method for purifying exhaust gas in which nitrogen oxides (NOx) gas is removed from a combustion exhaust gas. The method for purifying exhaust gas according to the invention is characterized in that water vapor is further added to raw exhaust gas to be processed to increase the water vapor concentration in the exhaust gas and the resulting moisture-adjusted exhaust gas is introduced into a denitration catalyst layer. The water vapor concentration in the moisture-adjusted exhaust gas is preferably 22.0% by volume or less in the total of the water vapor originally contained in the raw exhaust gas and the added water vapor. |
| 申请公布号 |
US2016166989(A1) |
申请公布日期 |
2016.06.16 |
| 申请号 |
US201414907962 |
申请日期 |
2014.07.18 |
| 申请人 |
HITACHI ZOSEN CORPORATION |
发明人 |
Nishi Tsugumi;Hino Naoe;Yamamoto Seigo;Hikazudani Susumu |
| 分类号 |
B01D53/94;F01N3/20;F01N13/00;F01N3/10 |
主分类号 |
B01D53/94 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for purifying exhaust gas in which nitrogen oxides in exhaust gas is removed by bringing a combustion exhaust gas having an alcohol added as a reducing agent into contact with a denitration catalyst, wherein water vapor is further added to a raw exhaust gas to be processed, thereby increasing a water vapor concentration in the exhaust gas to give a moisture-adjusted exhaust gas, and the moisture-adjusted exhaust gas is introduced into a denitration catalyst layer. |
| 地址 |
Osaka-shi JP |
