公开(公告)号：US20180305234A1

公开(公告)日：2018-10-25

申请号：US15957339

申请日：2018-04-19

Applicant: Ecolab USA Inc.

Inventor： Sankar Bhattacharja ,  Jasbir Gill ,  Yuhuan Jin ,  Paul Wiatr

IPC: C02F5/10 ,  C01B25/234 ,  C02F1/06 ,  C02F1/04

CPC classification number: C02F5/10 ,  C01B25/222 ,  C01B25/2346 ,  C01B25/32 ,  C02F1/042 ,  C02F1/06 ,  C02F5/14 ,  C02F2101/101 ,  C02F2303/22 ,  C23F14/02

Abstract: 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(公告)号：US11027998B2

公开(公告)日：2021-06-08

申请号：US16791300

申请日：2020-02-14

Applicant: Ecolab USA Inc.

Inventor： Sankar Bhattacharja ,  Jasbir Gill ,  Yuhuan Jin ,  Paul Wiatr

IPC: C02F5/10 ,  C01B25/234 ,  C02F1/04 ,  C02F1/06 ,  C02F5/14 ,  C01B25/222 ,  C01B25/32 ,  C23F14/02 ,  C02F101/10

Abstract: 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(公告)号：US20200180987A1

公开(公告)日：2020-06-11

申请号：US16791300

申请日：2020-02-14

Applicant: Ecolab USA Inc.

Inventor： Sankar Bhattacharja ,  Jasbir Gill ,  Yuhuan Jin ,  Paul Wiatr

IPC: C02F5/10 ,  C02F1/06 ,  C02F1/04 ,  C01B25/234 ,  C23F14/02 ,  C01B25/32 ,  C01B25/222 ,  C02F5/14

Abstract: 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(公告)号：US10584049B2

公开(公告)日：2020-03-10

申请号：US15957339

申请日：2018-04-19

Applicant: Ecolab USA Inc.

Inventor： Sankar Bhattacharja ,  Jasbir Gill ,  Yuhuan Jin ,  Paul Wiatr

IPC: C02F5/10 ,  C02F1/04 ,  C02F1/06 ,  C01B25/234 ,  C02F5/14 ,  C01B25/222 ,  C01B25/32 ,  C23F14/02 ,  C02F101/10

Abstract: 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.