公开(公告)号：WO2019060116A1

公开(公告)日：2019-03-28

申请号：PCT/US2018/048600

申请日：2018-08-29

Applicant: TENNECO AUTOMOTIVE OPERATING COMPANY INC.

Inventor： BRADFORD, Michael C. ,  BROCKMAN, Alan C. ,  FLOYD, Ryan A.

IPC: F01N3/20

CPC classification number: B01D39/16 ,  B01D15/10 ,  B01D53/9418 ,  B01D2239/0407 ,  B01D2251/2067 ,  B01J8/0214 ,  B01J16/00 ,  B01J23/04 ,  B01J27/232 ,  B01J35/04 ,  C07C273/16 ,  F01N3/2066 ,  F01N3/208 ,  F01N3/2896 ,  F01N2610/02 ,  F01N2610/1426 ,  F01N2900/1806

Abstract: An exhaust after-treatment system and a method for treating an engine exhaust that each utilize a filter for removing biuret from an aqueous urea exhaust treatment fluid. The filter includes a filter element that includes an adsorbent material configured to adsorb the biuret from the aqueous urea exhaust treatment fluid, and includes a biuret conversion catalyst impregnated in the adsorbent material that is configured to convert the biuret into a material useful for exhaust after-treatment or into a material that is innocuous to an exhaust after-treatment system.