公开(公告)号：US20230046026A1

公开(公告)日：2023-02-16

申请号：US17866056

申请日：2022-07-15

申请人： THE INSTITUTE OF SEAWATER DESALINATION AND MULTIPURPOSE UTILIZATION, MNR(TIANJIN)

发明人： Chungang XIE ,  Shaoyan LU ,  Wenyan ZHANG ,  Licong WANG ,  Laibo MA ,  Liang WANG

IPC分类号： B01D9/00 ,  B01D21/26

摘要： The disclosure discloses a spiral-flow type fluidized-bed cooling crystallization system. The system comprises a first fluidized-bed crystallizer, a second fluidized-bed crystallizer, a crystal growing tank, a centrifuge, a circulating pump, a flow control valve, a densimeter and the like, wherein vertical heat transfer pipes are arranged in the first fluidized-bed crystallizer and the second fluidized-bed crystallizer, and scraping particles are contained in the heat transfer pipes. According to the invention, feed liquid exchanges heat with a cooling medium through the vertical heat transfer pipes; meanwhile, spiral spray heads at the bottoms of the heat transfer pipes are used for enabling the feed liquid in the pipes to form a spiral flow field, and the scraping particles are efficiently driven to continuously impact and crush crystals attached to heat transfer wall faces, so the effects of heat transfer enhancement, heat transfer wall face self-cleaning.