公开(公告)号：US20210080104A1

公开(公告)日：2021-03-18

申请号：US17014164

申请日：2020-09-08

Applicant: University of Kentucky Research Foundation

Inventor： Kunlei Liu ,  Heather Nikolic ,  Chenggua Ma

IPC: F23L15/02 ,  F28G11/00 ,  F23L99/00

Abstract: An air preheater for a solid fuel-fired power plant includes a housing, a regenerative heating element received in the housing and adapted to transfer heat from the flue gas stream to the air stream, a plurality of flow control valves upstream of the regenerative heating element and a controller adapted to selectively open and close each valve of the plurality of flow control valves in order to provide an air flow shadow extending downstream over a selected portion of the regenerative heating element whereby ammonium bisulfate previously deposited on the selected portion is decomposed to loose dry ash. A method of decomposing and removing ammonium bisulfate from a regenerative heating element is also presented.