公开(公告)号：US20180078963A1

公开(公告)日：2018-03-22

申请号：US15560188

申请日：2016-03-31

Applicant: SPX FLOW TECHNOLOGY DANMARK A/S

Inventor： Christian Holm FRIDBERG ,  Henrik SCHONFELDT

IPC: B05B15/02 ,  B01J2/04 ,  B05B12/00 ,  F26B3/12 ,  G01N21/88 ,  G01N21/94

CPC classification number: B05B15/50 ,  B01J2/02 ,  B01J2/04 ,  B05B12/004 ,  B05B12/082 ,  F26B3/12 ,  G01N21/8851 ,  G01N21/94 ,  G01N2021/945

Abstract: There is provided a method for monitoring deposit build-up on spray nozzles in a spray drying or spray cooling chamber. The method comprises feeding drying air or cooling air into the chamber, and feeding a feed material to be spray dried or spray cooled into the chamber through one or more spray nozzles, thereby obtaining one or more sprays of feed material in contact with drying or cooling air. A digital reference image is obtained, which reference image has an image area comprising a first area of interest covering at least part of a spray nozzle and/or part of a feed material spray corresponding to a spray nozzle. A number of process images are obtained and recorded, where the process images cover the same image area as the reference image, and at least part of the recorded process images are compared with the reference image, and a difference, if any, is detected for the first interest area between the reference image and the process images being compared to the reference image. A notification or error notification may be issued based on the detected differences. The notification may be issued when a predetermined minimum difference is detected for each of a predetermined number of recorded process images. The present invention also provides a system for monitoring spray nozzles in a spray drying or spray cooling chamber.