ATE104929T1 - Verfahren fuer die verhinderung von ablagerungen in zellstoffkochern. - Google Patents

Verfahren fuer die verhinderung von ablagerungen in zellstoffkochern.

Info

Publication number: ATE104929T1
Authority: AT; Austria
Prior art keywords: procedures; pulp digesters; preventing deposition; digesters; pulp
Prior art date: 1987-07-29

Application number

AT8888121861T

Other languages

English (en)

Inventor

Druce K Crump

Lance A Cooper

Thomas M Hopkins

Original Assignee

Dow Chemical Co

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1987-07-29

Filing date

1988-12-29

Publication date

1994-05-15

1988-12-29 Application filed by Dow Chemical Co filed Critical Dow Chemical Co

1994-05-15 Application granted granted Critical

1994-05-15 Publication of ATE104929T1 publication Critical patent/ATE104929T1/de

Links

230000008021 deposition Effects 0.000 title 1
238000000034 method Methods 0.000 title 1
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
239000002253 acid Substances 0.000 abstract 1
150000007513 acids Chemical class 0.000 abstract 1
229910052791 calcium Inorganic materials 0.000 abstract 1
239000011575 calcium Substances 0.000 abstract 1
DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 abstract 1
230000005764 inhibitory process Effects 0.000 abstract 1
239000000203 mixture Substances 0.000 abstract 1
239000002736 nonionic surfactant Substances 0.000 abstract 1

Classifications

- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Life Sciences & Earth Sciences (AREA)
Hydrology & Water Resources (AREA)
Engineering & Computer Science (AREA)
Environmental & Geological Engineering (AREA)
Water Supply & Treatment (AREA)
Organic Chemistry (AREA)
Paper (AREA)
Polysaccharides And Polysaccharide Derivatives (AREA)

AT8888121861T 1987-07-29 1988-12-29 Verfahren fuer die verhinderung von ablagerungen in zellstoffkochern. ATE104929T1 (de)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US07/079,307 US4799995A (en)	1987-07-29	1987-07-29	Scale inhibition formulations for kraft digesters
EP88121861A EP0375800B1 (de)	1987-07-29	1988-12-29	Verfahren für die Verhinderung von Ablagerungen in Zellstoffkochern
CA000587464A CA1323470C (en)	1987-07-29	1989-01-04	Compositions for scale inhibition for kraft digesters

Publications (1)

Publication Number	Publication Date
ATE104929T1 true ATE104929T1 (de)	1994-05-15

Family

ID=27168168

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT8888121861T ATE104929T1 (de)	1987-07-29	1988-12-29	Verfahren fuer die verhinderung von ablagerungen in zellstoffkochern.

Country Status (7)

Country	Link
US (1)	US4799995A (de)
EP (1)	EP0375800B1 (de)
AT (1)	ATE104929T1 (de)
BR (1)	BR8900062A (de)
CA (1)	CA1323470C (de)
DE (1)	DE3889332T2 (de)
ES (1)	ES2051291T3 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5032224A (en) *	1989-03-27	1991-07-16	Exxon Chemical Patent Inc.	Method of producing pulp
US5302292A (en) *	1991-05-20	1994-04-12	Jamestown Chemical Company, Inc.	Method for treating ground water contamination
US5320829A (en) *	1991-12-10	1994-06-14	The Dow Chemical Company	Oral compositions for inhibiting plaque formation
US5318772A (en) *	1991-12-10	1994-06-07	The Dow Chemical Company	Oral compositions for inhibiting calculus formation
JPH0699879B2 (ja) *	1992-08-27	1994-12-07	伯東株式会社	パルプ蒸解釜のスケール付着防止剤およびスケール付着防止方法
MY138251A (en) *	2001-06-06	2009-05-29	Thermphos Trading Gmbh	Method for inhibiting calcium salt scale
MY129053A (en) *	2001-06-06	2007-03-30	Thermphos Trading Gmbh	Composition for inhibiting calcium salt scale
JP4242272B2 (ja) *	2001-06-06	2009-03-25	サーモフオス・トレーデイング・ゲー・エム・ベー・ハー	改良パルプの製造法およびその水性組成物
US7241363B2 (en) *	2004-06-26	2007-07-10	International Paper Company	Methods to decrease scaling in digester systems
EP2090646A1 (de)	2008-01-22	2009-08-19	Thermphos Trading GmbH	Oberflächenbehandlungszusammensetzung mit Phosphonsäureverbindungen
EP2082991A1 (de) *	2008-01-22	2009-07-29	Thermphos Trading GmbH	Verfahren zur Wasseraufbereitung
US9447657B2 (en)	2010-03-30	2016-09-20	The Lubrizol Corporation	System and method for scale inhibition
US8986504B1 (en)	2013-10-25	2015-03-24	International Paper Company	Digester apparatus
DE102014109637B4 (de) *	2014-07-09	2021-02-25	Zschimmer & Schwarz Mohsdorf GmbH & Co. KG	Nichtwässrige Lösungen von Alkalisalzen von Aminoalkylenphosphonsäuren und Verfahren zu deren Herstellung

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3434969A (en) *	1967-08-11	1969-03-25	Calgon Corp	Scale inhibiting
ES377391A1 (es) *	1969-05-17	1973-02-01	Benckiser Gmbh Joh A	Procedimiento para impedir deposiciones petrificantes en sistemas acuosos.
IT951279B (it) *	1971-07-01	1973-06-30	Benckiser Gmbh Joh A	Processo per impedire il formarsi di depositi che producono incrosta zioni nei sistemi acquosi
DE2408523C3 (de) *	1974-02-22	1978-05-18	Benckiser-Knapsack Gmbh, 6802 Ladenburg	Verfahren zur Verhütung von Harzausscheidungen bei der Papierherstellung
US3992249A (en) *	1974-04-08	1976-11-16	American Cyanamid Company	Control of pulp-paper mill pitch deposits
US4003842A (en) *	1975-07-14	1977-01-18	American Cyanamid Company	Corrosion and scale inhibitors for industrial recirculating cooling water systems
US4184912A (en) *	1976-08-09	1980-01-22	Nalco Chemical Company	Pitch control method
US4105573A (en) *	1976-10-01	1978-08-08	The Procter & Gamble Company	Dishwasher detergent composition
CA1123307A (en) *	1977-05-26	1982-05-11	Nalco Chemical Company	Surfactant chelating scale inhibitor and dispersant for wet scrubber deposit control
US4240921A (en) *	1979-03-28	1980-12-23	Stauffer Chemical Company	Liquid cleaning concentrate
US4253912A (en) *	1979-07-16	1981-03-03	Betz Laboratories, Inc.	Deposit control through the use of oligomeric phosphonic acid derivatives
US4255309A (en) *	1979-08-16	1981-03-10	Betz Laboratories, Inc.	Polyacrylic acids and methyl vinyl ether/maleic anhydride copolymers as soft scale inhibitors
US4406811A (en) *	1980-01-16	1983-09-27	Nalco Chemical Company	Composition and method for controlling corrosion in aqueous systems
DE3447686C1 (de) *	1984-12-28	1986-10-30	Jörg Dipl.-Ing. Dr. Seewalchen Oberkofler	Verfahren zur Herabsetzung der Schleimbildung in Anlagen mit einem Wasserkreislauf und Anwendung des Verfahrens
GB8703128D0 (en) *	1987-02-11	1987-03-18	Donmarn Ltd	Anti-scaling compounds
US4806259A (en) *	1987-06-15	1989-02-21	The B. F. Goodrich Company	Membrane cleaning compositions containing phosphorous compounds

1987
- 1987-07-29 US US07/079,307 patent/US4799995A/en not_active Expired - Fee Related
1988
- 1988-12-29 DE DE3889332T patent/DE3889332T2/de not_active Expired - Fee Related
- 1988-12-29 AT AT8888121861T patent/ATE104929T1/de not_active IP Right Cessation
- 1988-12-29 ES ES88121861T patent/ES2051291T3/es not_active Expired - Lifetime
- 1988-12-29 EP EP88121861A patent/EP0375800B1/de not_active Expired - Lifetime
1989
- 1989-01-04 CA CA000587464A patent/CA1323470C/en not_active Expired - Fee Related
- 1989-01-09 BR BR898900062A patent/BR8900062A/pt not_active Application Discontinuation

Also Published As

Publication number	Publication date
ES2051291T3 (es)	1994-06-16
EP0375800A1 (de)	1990-07-04
BR8900062A (pt)	1990-08-14
US4799995A (en)	1989-01-24
DE3889332D1 (de)	1994-06-01
CA1323470C (en)	1993-10-26
EP0375800B1 (de)	1994-04-27
DE3889332T2 (de)	1994-08-11

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Legal Events

Date	Code	Title	Description
1994-12-15	UEP	Publication of translation of european patent specification
1996-09-15	REN	Ceased due to non-payment of the annual fee