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Method Of Monitoring And Inhibiting Scale Deposition In Pulp Mill Evaporators And Concentrators
Abstract: A method of monitoring and inhibiting scale precipitation and deposition from spent liquor in pulp mill evaporators and concentrators is disclosed. The method includes connecting a black liquor deposition monitor to a pulp mill evaporator or concentrator and measuring the thermal conductivity on the outer surface of the monitor. A controller interprets the measured thermal conductivity and determines a level of scale deposition. If the level of scale deposition is above a predetermined level, the controller is operable to introduce a scale-inhibiting composition to the spent liquor. The scale-inhibiting composition may include organic polycarboxylic acids; organic fatty; low molecular weight and polymeric aromatic acids; organic acid esters, anhydrides, and amides; low molecular weight and polymeric aliphatic and aromatic sulfonic acids; and low molecular weight and polymeric amines; and any combinations.
Notices, Deadlines & Correspondence
Patent Information
Applicants
NALCO COMPANY
Inventors
1. SHEVCHEKO Sergey M.
2. DUGGIRALA Prasad Y.
3. KOUZNETSOV Dmitri L.
Specification
METHOD OF MONITORING AND INHIBITING SCALE DEPOSITION IN PULP MILL EVAPORATORS AND CONCENTRATORS
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 7924-DELNP-2009-AbandonedLetter.pdf | 2017-11-09 |
| 1 | 7924-DELNP-2009-Correspondence-Others-(09-12-2009).pdf | 2009-12-09 |
| 2 | 7924-DELNP-2009-FER.pdf | 2017-01-30 |
| 2 | 7924-DELNP-2009-Assignment-(09-12-2009).pdf | 2009-12-09 |
| 3 | FORM 13_Address for Service.pdf | 2014-04-02 |
| 3 | 7924-DELNP-2009-Form-3-(23-08-2010).pdf | 2010-08-23 |
| 4 | Relevant Doucments.pdf | 2014-04-02 |
| 4 | 7924-DELNP-2009-Correspondence-Others-(23-08-2010).pdf | 2010-08-23 |
| 5 | Form-1.pdf | 2011-08-20 |
| 5 | 7924-delnp-2009-GPA-(02-05-2011).pdf | 2011-05-02 |
| 6 | Form-3.pdf | 2011-08-20 |
| 6 | 7924-delnp-2009-Form-18-(02-05-2011).pdf | 2011-05-02 |
| 7 | Form-5.pdf | 2011-08-20 |
| 7 | 7924-delnp-2009-Correspondence-Others-(02-05-2011).pdf | 2011-05-02 |
| 8 | Translation-Search Report.pdf | 2011-08-20 |
| 8 | Priority Document.pdf | 2011-08-20 |
| 9 | Translation-Search Report.pdf | 2011-08-20 |
| 9 | Priority Document.pdf | 2011-08-20 |
| 10 | 7924-delnp-2009-Correspondence-Others-(02-05-2011).pdf | 2011-05-02 |
| 10 | Form-5.pdf | 2011-08-20 |
| 11 | Form-3.pdf | 2011-08-20 |
| 11 | 7924-delnp-2009-Form-18-(02-05-2011).pdf | 2011-05-02 |
| 12 | Form-1.pdf | 2011-08-20 |
| 12 | 7924-delnp-2009-GPA-(02-05-2011).pdf | 2011-05-02 |
| 13 | Relevant Doucments.pdf | 2014-04-02 |
| 13 | 7924-DELNP-2009-Correspondence-Others-(23-08-2010).pdf | 2010-08-23 |
| 14 | FORM 13_Address for Service.pdf | 2014-04-02 |
| 14 | 7924-DELNP-2009-Form-3-(23-08-2010).pdf | 2010-08-23 |
| 15 | 7924-DELNP-2009-FER.pdf | 2017-01-30 |
| 15 | 7924-DELNP-2009-Assignment-(09-12-2009).pdf | 2009-12-09 |
| 16 | 7924-DELNP-2009-Correspondence-Others-(09-12-2009).pdf | 2009-12-09 |
| 16 | 7924-DELNP-2009-AbandonedLetter.pdf | 2017-11-09 |
Search Strategy
| 1 | PatSeer_22-12-2016.pdf |