公开(公告)号：US11760672B2

公开(公告)日：2023-09-19

申请号：US15757488

申请日：2016-09-23

Applicant: Ecolab USA Inc.

Inventor： Ling Feng Han ,  Yin Yin Tong ,  Fan Yang ,  Chun Bo Yu

IPC: C02F5/12 ,  C02F5/14 ,  C08L25/18 ,  C08L33/02 ,  C23F14/02 ,  C02F5/10 ,  C08L33/24 ,  C02F103/34

CPC classification number: C02F5/12 ,  C02F5/10 ,  C02F5/14 ,  C08L25/18 ,  C08L33/02 ,  C08L33/24 ,  C23F14/02 ,  C02F2103/34 ,  C08L33/02 ,  C08L25/18 ,  C08L33/24 ,  C08L25/18

Abstract: The present disclosure relates to antiscale dispersant compositions. The compositions may include various components. The compositions may be used in connection with gray and/or black water processing in a coal gasification system. The compositions are useful for inhibiting the deposition of various materials, such as calcium carbonate, calcium phosphate, iron, aluminum, silicate, calcium sulfate, and any suspended solids in the water.

公开(公告)号：US10889518B2

公开(公告)日：2021-01-12

申请号：US15646445

申请日：2017-07-11

Applicant: ECOLAB USA INC.

Inventor： Yue Ming Zhou ,  Jian Kun Shen ,  Yin Yin Tong ,  Ling Feng Han

IPC: C02F5/04 ,  C02F1/56 ,  C02F103/02

Abstract: The present invention provides a use of an inorganic salt or acid capable of producing free phosphate or fluoride ion in reducing the hardness and/or alkalinity of a water system containing residual antiscalant. In the lab test, it is found that the addition of a suitable amount of sodium phosphate or sodium fluoride may induce alkalinity reduction as well as hardness reduction. The production efficiency can be enhanced since the scaling was relieved and heat exchange efficiency can be improved. Meanwhile, lower scaling stress also means lower antiscalant dosage and cost, and thus the total operation cost can be reduced.