- 专利标题: SCALE CONTROL IN PHOSPHORIC ACID PRODUCTION AND HANDLING PLANTS
-
申请号: US15957339申请日: 2018-04-19
-
公开(公告)号: US20180305234A1公开(公告)日: 2018-10-25
- 发明人: Sankar Bhattacharja , Jasbir Gill , Yuhuan Jin , Paul Wiatr
- 申请人: Ecolab USA Inc.
- 优先权: CN201710264732.5 20170420
- 主分类号: C02F5/10
- IPC分类号: C02F5/10 ; C01B25/234 ; C02F1/06 ; C02F1/04
摘要:
Disclosed herein are compositions and methods of mitigating scale in phosphoric acid and ammonium phosphate plants. Scale-mitigating compositions of the invention can be added to phosphoric acid before or during the concentration in the evaporator cycle of a phosphoric acid plant. The compositions retard the formation of scale on surfaces in contact with the phosphoric acid, and thus time between cleaning is extended and plant productivity increased. Further, the scale that forms is softer and more easily cleaned from surfaces, reducing non-operation time of the plant and/or evaporator. Methods of mitigating scale formation in phosphoric acid production and phosphoric acid handling plants are disclosed. In the methods, scales accumulate more slowly and are softer, more tractable, and more easily cleaned from surfaces to which they adhere.
公开/授权文献
信息查询
IPC分类: