GB1059198A - Inhibition of scale formation in steam generation - Google Patents

Inhibition of scale formation in steam generation

Info

Publication number
GB1059198A
GB1059198A GB38058/65A GB3805865A GB1059198A GB 1059198 A GB1059198 A GB 1059198A GB 38058/65 A GB38058/65 A GB 38058/65A GB 3805865 A GB3805865 A GB 3805865A GB 1059198 A GB1059198 A GB 1059198A
Authority
GB
United Kingdom
Prior art keywords
water
scale formation
acid
inhibition
steam generation
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
GB38058/65A
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.)
ChampionX LLC
Original Assignee
Nalco 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.)
Filing date
Publication date
Application filed by Nalco Chemical Co filed Critical Nalco Chemical Co
Publication of GB1059198A publication Critical patent/GB1059198A/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
    • C02F5/12—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 nitrogen
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/14—Nitrogen-containing compounds
    • C23F11/144—Aminocarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/16—Rotary appliances using jets of fluid for removing debris
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

Scale formation is removed and inhibited in boilers in steam generators by incorporating with the water from which steam is generated under pressures ranging from 15 to 1100 psi. an alkali metal salt of nitrilotricarboxylic acid, e.g. a dosage of 0.1 - 1000 ppm of tri-sodium nitrilotri-acetate, and boiling the water. The pH of the boiling water is preferably made at least 9 e.g. by adding NaOH, Na2CO3 or an alkaline phosphate. Li or K salts of the said acid may be used, in which the carboxylic acid groups may be acetic or propionic acid. The salt may be added in the form of a solution or as brignettes also containing soda ash or phosphates.
GB38058/65A 1964-11-19 1965-09-06 Inhibition of scale formation in steam generation Expired GB1059198A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US412336A US3296027A (en) 1964-11-19 1964-11-19 Removal and inhibition of scale formation in steam generation

Publications (1)

Publication Number Publication Date
GB1059198A true GB1059198A (en) 1967-02-15

Family

ID=23632594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38058/65A Expired GB1059198A (en) 1964-11-19 1965-09-06 Inhibition of scale formation in steam generation

Country Status (4)

Country Link
US (1) US3296027A (en)
DE (1) DE1517473A1 (en)
ES (1) ES317585A1 (en)
GB (1) GB1059198A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430641A (en) * 1966-02-16 1969-03-04 Nalco Chemical Co Method of redispersing deposits
US3520813A (en) * 1966-11-03 1970-07-21 Betz Laboratories Method and composition for controlling boiler scale formation
US3549538A (en) * 1967-06-22 1970-12-22 Nalco Chemical Co Scale inhibition and removal in steam generation
US3518204A (en) * 1967-11-01 1970-06-30 Betz Laboratories Control of the rate of precipitate growth and of precipitation in aqueous systems
US3956164A (en) * 1974-09-23 1976-05-11 Calgon Corporation Chelating agents
US4457847B2 (en) * 1981-11-05 1996-12-31 Nalco Chemical Co Carboxylate polymers for internal scale control agents in boiler systems
US4775491A (en) * 1983-08-10 1988-10-04 Nuclear Technology Corp. Hydrazides of amino-polyacetic acids as chelants
US4726907A (en) * 1983-08-10 1988-02-23 Nuclear Technology Corp Hydrazides of amino-polyacetic acids as chelants
US4708805A (en) * 1986-11-24 1987-11-24 Muhala Thomas F D Barium sulfate removal and anti-deposition compositions and process of use therefor
DE3771859D1 (en) * 1986-12-01 1991-09-05 Siemens Ag METHOD FOR CLEANING A CONTAINER.
FR2641370B1 (en) * 1988-12-29 1994-05-27 Henkel France PRODUCT FOR THE CLEANING OF PLATE EXCHANGERS ESPECIALLY IN THE NUCLEAR INDUSTRY AS WELL AS PROCESS IMPLEMENTED WHEN USING THIS PRODUCT
US5276965A (en) * 1992-02-13 1994-01-11 The Atlantic Group, Inc. Method for dismantling potentially contaminated tubes from a tube bundle
US20120006671A1 (en) * 2010-07-07 2012-01-12 General Electric Company Control of scale formation in produced water evaporators

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240957A (en) * 1935-10-30 1941-05-06 Gen Aniline & Film Corp Process for avoiding and rendering harmless the precipitates of water insoluble metal salts
USRE23085E (en) * 1940-04-22 1949-02-22 Prevention of foamtttg in steam
US2396938A (en) * 1944-01-22 1946-03-19 Martin Dennis Company Method of treating boilers
GB873488A (en) * 1956-12-19 1961-07-26 Benckiser Gmbh Joh A A method for counteracting the formation of precipitates and discolourations and forsequestering iron in an aqueous medium containing iron
US3099521A (en) * 1960-10-03 1963-07-30 Dow Chemical Co Water treatment
DE1222444B (en) * 1961-10-13 1966-08-04 Bayer Ag Procedure to prevent stone deposits and corrosion

Also Published As

Publication number Publication date
US3296027A (en) 1967-01-03
DE1517473A1 (en) 1969-12-11
ES317585A1 (en) 1966-04-01

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