Scale control in phosphoric acid production and handling plants

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 10584049
APP PUB NO 20180305234A1
SERIAL NO

15957339

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Abstract

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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.

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Patent Owner(s)

  • ECOLAB USA INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bhattacharja, Sankar Naperville, US 9 64
Gill, Jasbir Naperville, US 7 27
Jin, Yuhuan Shanghai, CN 2 1
Wiatr, Paul Roselle, US 4 1

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