IP Library Granted Patent US 10,689,280
Granted Patent B2
US 10,689,280 · App. 12/650,714 · Granted Jun 23, 2020

Method for the removing and reducing scaling

Inventor: William H. Morris, III (Naperville, IL)
Assignee: ECOLAB USA INC.
C02F5/125C02F5/12C02F2101/101C02F2101/105C02F2303/20C02F2303/22
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 10,689,280
App. No.
12/650,714
Granted
Jun 23, 2020
Kind
B2
Abstract

The invention relates to improved elimination of scale in processing systems. The method removes existing scale while also eliminating buildup. The invention relates to phosphate and sulfate scale. The invention further allows for improved anti-scaling without the need to make any pH adjustments. The method provides all factor listed while in no way compromises the integrity of membranes that may be used in the system.

Claims (11)

1. A method, comprising:

adding an effective amount of a trimethylglycine composition into a water purification system comprising a membrane in order to reduce calcium phosphate scaling and scale buildup in the water purification system, wherein the trimethylglycine composition controls the initiation of the calcium phosphate scale nucleation, and mitigates its growth, wherein the trimethylglycine composition includes one or more of the following compounds selected from the group consisting of trimethylglycine hydrochloride and trimethylglycine-citric acid, wherein the trimethylglycine composition is put into the water purification system without the need for pH adjustment, and wherein the effective amount is between 0.2 ppm and 0.8 ppm.

2. The method of claim 1 , wherein the trimethylglycine composition added in a concentration proportionate to a concentration of the scale in the water purification system.

3. The method of claim 1 wherein the trimethylglycine composition is added to the water purification system consistently.

4. The method of claim 1 wherein the trimethylglycine composition is added to the water purification system intermittently.

5. A method, consisting of:

adding a scale inhibitor composition into a water purification system comprising a membrane, wherein the scale inhibitor composition consists of trimethylglycine hydrochloride.

6. The method of claim 5 , wherein the scale inhibitor composition is added to the water purification system in an amount ranging from 0.2 ppm to 0.8 ppm.

7. The method of claim 5 , wherein the scale inhibitor composition is added to the water purification system in an amount of 0.2 ppm.

8. A method, consisting of:

adding a scale inhibitor composition into a water purification system comprising a membrane, wherein the scale inhibitor composition consists of a chemical of formula C 5 H 11 NO 2 .HCl.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 9, 2017
From: NALCO COMPANY LLC
To: ECOLAB USA INC.
Reel/Frame 042664/0140 →
CHANGE OF NAME Recorded Jun 9, 2017
From: NALCO COMPANY
To: NALCO COMPANY LLC.
Reel/Frame 042755/0646 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 31, 2009
From: MORRIS III, WILLIAM H.
To: NALCO COMPANY
Reel/Frame 023722/0962 →
Continuity (1)
Related Publication 20110155664A1 · Jun 30, 2011