公开(公告)号：US20140241947A1

公开(公告)日：2014-08-28

申请号：US14273019

申请日：2014-05-08

Applicant: Cummins Inc.

Inventor： Xu Chen ,  Krishna Kamasamudram ,  Neil W. Currier ,  Aleksey Yezerets

IPC: B01D53/96

CPC classification number: B01D53/96 ,  B01J29/072 ,  B01J29/90 ,  B01J38/02

Abstract: An example method includes determining that a selective catalytic reduction (SCR) component having a zeolite-based catalyst is contaminated with platinum (Pt). The method further includes elevating the temperature of the SCR component to at least 600° C. in response to the determining the catalytic component is contaminated with Pt, and maintaining the elevated temperature of the catalytic component for a predetermined time period thereby restoring reduction activity of the catalyst.

Abstract translation: 示例性方法包括确定具有沸石基催化剂的选择性催化还原（SCR）组分被铂（Pt）污染。 该方法还包括响应于确定催化组分被Pt污染并将催化组分的升高温度保持预定时间段，将SCR组分的温度升高至至少600℃，由此恢复还原活性 催化剂。

公开(公告)号：US08986620B2

公开(公告)日：2015-03-24

申请号：US14273019

申请日：2014-05-08

Applicant: Cummins Inc.

Inventor： Xu Chen ,  Krishna Kamasamudram ,  Neil W. Currier ,  Aleksey Yezerets

IPC: B01J38/02 ,  B01D53/96 ,  B01J29/90 ,  B01J29/072

CPC classification number: B01D53/96 ,  B01J29/072 ,  B01J29/90 ,  B01J38/02

Abstract: An example method includes determining that a selective catalytic reduction (SCR) component having a zeolite-based catalyst is contaminated with platinum (Pt). The method further includes elevating the temperature of the SCR component to at least 600° C. in response to the determining the catalytic component is contaminated with Pt, and maintaining the elevated temperature of the catalytic component for a predetermined time period thereby restoring reduction activity of the catalyst.

Abstract translation: 示例性方法包括确定具有沸石基催化剂的选择性催化还原（SCR）组分被铂（Pt）污染。 该方法还包括响应于确定催化组分被Pt污染并将催化组分的升高温度保持预定时间段，将SCR组分的温度升高至至少600℃，由此恢复还原活性 催化剂。