ES481476A1 - Composition and method for scale inhibition - Google Patents

Composition and method for scale inhibition

Info

Publication number
ES481476A1
ES481476A1 ES481476A ES481476A ES481476A1 ES 481476 A1 ES481476 A1 ES 481476A1 ES 481476 A ES481476 A ES 481476A ES 481476 A ES481476 A ES 481476A ES 481476 A1 ES481476 A1 ES 481476A1
Authority
ES
Spain
Prior art keywords
water
boiler
sludge
composition
scale inhibition
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES481476A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemed Corp
Original Assignee
Chemed Corp
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.)
Filing date
Publication date
Application filed by Chemed Corp filed Critical Chemed Corp
Publication of ES481476A1 publication Critical patent/ES481476A1/en
Expired legal-status Critical Current

Links

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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Detergent Compositions (AREA)

Abstract

Método de tratar agua de calderas para inhibir la formación de incrustaciones y lodos en ellas, caracterizado porque se introduce en el agua de alimentación de calderas un total de 0,01 a 500 ppm en peso de (a) un copolímero de ácido estirenosulfónico y anhidrido o ácido maleico, o una sal soluble en agua del mismo, y (b) un ácido organofosfónico soluble en agua que tiene un enlace carbono a fósforo, o una sal soluble en agua del mismo, introduciendo el agua de alimentación en una caldera a presión, dejando que se forme lodo en la caldera y eliminando periódicamente el lodo de la caldera por disminución de la presión, para expulsar lodo y agua de ella.Method of treating boiler water to inhibit the formation of scale and sludge therein, characterized in that a total of 0.01 to 500 ppm by weight of (a) a copolymer of styrenesulfonic acid and anhydride is introduced into the boiler feed water or maleic acid, or a water-soluble salt thereof, and (b) a water-soluble organophosphonic acid having a carbon to phosphorus bond, or a water-soluble salt thereof, introducing the feed water into a pressure boiler , allowing sludge to form in the boiler and periodically removing sludge from the boiler by decreasing pressure, to expel sludge and water from it.

ES481476A 1978-06-15 1979-06-12 Composition and method for scale inhibition Expired ES481476A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91571378A 1978-06-15 1978-06-15

Publications (1)

Publication Number Publication Date
ES481476A1 true ES481476A1 (en) 1980-07-01

Family

ID=25436161

Family Applications (1)

Application Number Title Priority Date Filing Date
ES481476A Expired ES481476A1 (en) 1978-06-15 1979-06-12 Composition and method for scale inhibition

Country Status (8)

Country Link
JP (1) JPS551897A (en)
CA (1) CA1114978A (en)
DE (1) DE2923718A1 (en)
ES (1) ES481476A1 (en)
FR (1) FR2431999A1 (en)
GB (1) GB2023121B (en)
IT (1) IT1121786B (en)
SE (1) SE431533B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT71647B (en) * 1979-08-16 1982-01-21 Calgon Corp Process for preparing a composition for the control of scale and deposits in gas-liquid separation
US4306991A (en) 1979-09-18 1981-12-22 Chemed Corporation Scale inhibition
CA1151498A (en) * 1979-10-23 1983-08-09 Dearborn Chemicals Ltd. Treatment of aqueous systems
DE3230291A1 (en) * 1981-08-18 1983-03-03 Dearborn Chemicals Ltd., Widnes, Cheshire COMPOSITION FOR PREVENTING KETTLE IN AQUEOUS SYSTEMS
US4409192A (en) * 1982-04-26 1983-10-11 Betz Laboratories, Inc. Gas scrubbing methods
JPS58199877A (en) * 1982-05-03 1983-11-21 ナルコ・ケミカル・カンパニ− Composition and method of preventing corrosion of ferrous metal
CA1207211A (en) * 1982-09-27 1986-07-08 Dionisio G. Cuisia Composition and method for inhibiting scale
US4581145A (en) * 1982-09-27 1986-04-08 Dearborn Chemical Company Composition and method for inhibiting scale
US4556493A (en) * 1983-02-16 1985-12-03 Dearborn Chemical Company Composition and method for inhibiting scale
CA1224999A (en) * 1983-02-16 1987-08-04 Dionisio G. Cuisia Composition and method for inhibiting scale
US4576722A (en) * 1983-02-22 1986-03-18 The Mogul Corporation Scale and sludge compositions for aqueous systems
EP0122013B1 (en) * 1983-03-07 1988-12-21 Calgon Corporation Polymeric additives for water
GB8311002D0 (en) * 1983-04-22 1983-05-25 Unilever Plc Detergent compositions
JPS63176871A (en) * 1987-01-17 1988-07-21 Daihatsu Motor Co Ltd Lubricating device for transmission
DE19514272C2 (en) * 1995-04-21 1997-02-20 Amtra Aquaristik Gmbh Means and methods for regulating the hardness and pH of the water in freshwater aquariums
EP0785174A1 (en) * 1996-01-22 1997-07-23 Monsanto Europe S.A./N.V. Use of triaminophosphonates in cement
US6310031B1 (en) 1999-11-30 2001-10-30 Amway Corporation Method of inhibiting soil redeposition
CN107973425A (en) * 2017-12-13 2018-05-01 攀枝花钢城集团瑞天安全环保有限公司 Composite slow-corrosion scale resistor and preparation method thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549538A (en) * 1967-06-22 1970-12-22 Nalco Chemical Co Scale inhibition and removal in steam generation
GB1414918A (en) * 1973-02-14 1975-11-19 Ciba Geigy Uk Ltd Treatment of water to prevent the deposition of scale
US3890228A (en) * 1973-04-13 1975-06-17 Chemed Corp Polyacrylate-polyphosphonic acid treatment in aqueous systems
GB1519512A (en) * 1974-06-10 1978-07-26 Grace W R & Co Watertreatment process
JPS5175681A (en) * 1974-12-26 1976-06-30 Chemed Corp MIZUJUNKANKEINITAISURU HORIAKURIRUSAN HOSUPPONSAN SHORIHO
CA1062983A (en) * 1975-09-08 1979-09-25 Joseph J. Schuck Copolymers for the control of the formation and deposition of materials in aqueous mediums
JPS5827349B2 (en) * 1975-11-25 1983-06-08 栗田工業株式会社 Corrosion prevention composition in aqueous systems
SE435456B (en) * 1976-01-07 1984-10-01 Calgon Corp COMPOSITION AND PROCEDURE TO CONTROL THE BUILDING OF THE FLAVOR IN GAS WASHER
GB1539974A (en) * 1976-11-10 1979-02-07 Ciba Geigy Ag Method of inhibiting corrosion and scaling of metals in contact with water
US4048066A (en) * 1976-11-17 1977-09-13 Chemed Corporation Method of inhibiting scale

Also Published As

Publication number Publication date
FR2431999B1 (en) 1985-05-10
DE2923718A1 (en) 1979-12-20
SE431533B (en) 1984-02-13
GB2023121B (en) 1982-08-25
SE7905174L (en) 1979-12-16
JPS6152760B2 (en) 1986-11-14
JPS551897A (en) 1980-01-09
IT1121786B (en) 1986-04-23
FR2431999A1 (en) 1980-02-22
IT7923459A0 (en) 1979-06-11
GB2023121A (en) 1979-12-28
CA1114978A (en) 1981-12-22

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Legal Events

Date Code Title Description
MM4A Patent lapsed

Effective date: 19960506