公开(公告)号：US20190091615A1

公开(公告)日：2019-03-28

申请号：US15712253

申请日：2017-09-22

Applicant: Tenneco Automotive Operating Company Inc.

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

IPC: B01D39/16 ,  F01N3/20 ,  F01N3/28 ,  B01D53/94 ,  B01D15/10 ,  B01J23/04 ,  B01J27/232 ,  B01J35/04 ,  B01J16/00 ,  C07C273/16

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.