公开(公告)号：US20220251781A1

公开(公告)日：2022-08-11

申请号：US17590970

申请日：2022-02-02

Applicant: ECOLAB USA INC.

Inventor： William Von Drasek ,  Prasad Y. Duggirala ,  Dorota Smoron ,  Christopher Powers ,  David Sirois ,  Khaled Zouaoui ,  Michael Kjerulf

IPC: D21C9/00 ,  D21C9/02 ,  D21C9/10

Abstract: A method of treating brown stock in a brown stock washing process is provided. The method includes measuring a refractive index of a brown stock; and dosing an additive to the brown stock according to at least the refractive index of the brown stock. A system for controlling dosing of an additive to a brown stock washing process is also provided. The system includes a refractive index measurement device; a controller configured to receive data provided by the refractive index measurement device and transform the data into additive addition output instructions; and an additive delivery unit configured to receive and execute the additive addition output instructions from the controller.

公开(公告)号：US20240384472A1

公开(公告)日：2024-11-21

申请号：US18668114

申请日：2024-05-17

Applicant: ECOLAB USA INC.

Inventor： Prasad Duggirala ,  Ashish Dhawan ,  Carter Silvernail ,  Luiz W.B. Pace ,  Dorota Smoron

IPC: D21H21/10 ,  D21H17/06 ,  D21H17/09 ,  D21H21/12 ,  D21H21/24

Abstract: Disclosed herein are novel drainage aids, and the use thereof for treating pulp during the papermaking process.