公开(公告)号：US20190275509A1

公开(公告)日：2019-09-12

申请号：US16332967

申请日：2017-09-28

Applicant: TSINGHUA UNIVERSITY

Inventor： Junhua LI ,  Xiansheng LI ,  Xiang LI ,  Yue PENG ,  Jianjun CHEN

IPC: B01J38/52 ,  B01J23/30 ,  B01J23/92 ,  B01J38/12 ,  B01D53/86 ,  B01D53/96

Abstract: The invention belongs to the field of nitrogen oxide control in environmental protection science and technology, and particularly relates to the field of regeneration and utilization of SCR denitration catalyst with calcium poisoning, that is a neutral complex cleaning liquid and a regeneration method for denitration catalyst with calcium poisoning. The present invention uses a neutral polyether surfactant as a regeneration and calcium removal reagent to achieve a poisoned catalyst regeneration method with high calcium removal rate, low loss rate of active components and excellent recovery of denitrification activity; wherein the content of the polyether surfactant is in the range of 0.1-1 wt %; by the regeneration method of the present invention, the loading of active components which is required in the conventional regeneration process can be omitted, while the corrosion of equipment and catalyst can be reduced, thus capable of regenerating the denitration catalyst with high efficiency.