GB1120684A - Improvements in cleaning liquid circulating equipment - Google Patents

Improvements in cleaning liquid circulating equipment

Info

Publication number
GB1120684A
GB1120684A GB5042/66A GB504266A GB1120684A GB 1120684 A GB1120684 A GB 1120684A GB 5042/66 A GB5042/66 A GB 5042/66A GB 504266 A GB504266 A GB 504266A GB 1120684 A GB1120684 A GB 1120684A
Authority
GB
United Kingdom
Prior art keywords
water
acid
amines
wetting agent
corrosion inhibitor
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
GB5042/66A
Inventor
Clive Barrington Searles
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Esso Research and Engineering 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 Exxon Research and Engineering Co, Esso Research and Engineering Co filed Critical Exxon Research and Engineering Co
Priority to GB5042/66A priority Critical patent/GB1120684A/en
Priority to FR93726A priority patent/FR1517111A/en
Priority to DE19671621572 priority patent/DE1621572A1/en
Priority to NL6701773A priority patent/NL6701773A/xx
Priority to US619347A priority patent/US3530000A/en
Publication of GB1120684A publication Critical patent/GB1120684A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
    • 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
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Detergent Compositions (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

Water-cooling equipment is descaled and cleaned by adding to the circulating water, whose velocity is at least 3 feet per second, an acid, which may be hydrochloric or sulphuric acid, in an amount of from 0.1% to 3% of the water by weight, together with from 0.1% to 2% together by volume of the acid of a corrosion inhibitor and a wetting agent. The water is circulated at not more than 9 feet per second, and is preferably mixed with the cleaning chemicals in a mixing tank in the water circuit. The corrosion inhibitor and wetting agent may be provided by a single reagent, and be an amine or mixture of amines, a mercaptan, a heterocyclic nitrogen compound or a urea or thiourea. Nitrogen containing cationic agents such as C12 + amines, alkylamine and quaternary ammonium compounds may be used, and alkanol-amine reaction products are stated to be particularly suitable. Where required the acid effluent from the cooler may be neutralised by adding alkaline material as it emerges.
GB5042/66A 1966-02-04 1966-02-04 Improvements in cleaning liquid circulating equipment Expired GB1120684A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB5042/66A GB1120684A (en) 1966-02-04 1966-02-04 Improvements in cleaning liquid circulating equipment
FR93726A FR1517111A (en) 1966-02-04 1967-02-03 Cleaning process for water circulating devices used in refrigeration installations
DE19671621572 DE1621572A1 (en) 1966-02-04 1967-02-03 Method for cleaning water-cooled devices
NL6701773A NL6701773A (en) 1966-02-04 1967-02-06
US619347A US3530000A (en) 1966-02-04 1967-02-28 Cleaning of liquid circulating equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5042/66A GB1120684A (en) 1966-02-04 1966-02-04 Improvements in cleaning liquid circulating equipment

Publications (1)

Publication Number Publication Date
GB1120684A true GB1120684A (en) 1968-07-24

Family

ID=9788655

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5042/66A Expired GB1120684A (en) 1966-02-04 1966-02-04 Improvements in cleaning liquid circulating equipment

Country Status (4)

Country Link
US (1) US3530000A (en)
DE (1) DE1621572A1 (en)
GB (1) GB1120684A (en)
NL (1) NL6701773A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011135366A2 (en) 2010-04-30 2011-11-03 Biochemica Uk Ltd Cleaning cooling towers

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1949287C3 (en) * 1969-09-30 1981-07-23 Vereinigte Aluminium-Werke Ag, 5300 Bonn Process for cleaning the pipes from crusts formed during the pipe digestion of bauxite with sodium aluminate liquor
US4541945A (en) * 1982-09-30 1985-09-17 Amchem Products Inhibitor-containing acid cleaning compositions and processes
CA2142789A1 (en) * 1994-02-17 1995-08-18 Wayne W. Frenier Formic-carboxylic acid mixtures for removing iron oxide scale from steel surfaces
AUPR914701A0 (en) * 2001-11-27 2001-12-20 Coffey, John I Method for controlling legionella in cooling towers
CN104018169A (en) * 2014-05-30 2014-09-03 鞍钢集团矿业公司 Cleaning solution for indissolvable water scale in mining automobile engine cooling system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB164838A (en) * 1920-03-15 1921-06-15 Francis Grimshaw Martin Improvements in and connected with the cleansing of condensers and like heat interchanging apparatus
US2884349A (en) * 1956-07-19 1959-04-28 Freeport Sulphur Co Removal of calcium sulfate scale
US2959555A (en) * 1956-09-28 1960-11-08 Dow Chemical Co Copper and iron containing scale removal from ferrous metal
US3003899A (en) * 1957-05-17 1961-10-10 Dow Chemical Co Removal of scale deposits
US2994664A (en) * 1958-02-19 1961-08-01 Nalco Chemical Co Dry acid cleaning compositions
US2947703A (en) * 1958-07-16 1960-08-02 Nalco Chemical Co Process of inhibiting corrosion of ferrous metals in contact with aqueous solutions of acids
US3003898A (en) * 1960-08-10 1961-10-10 Dow Chemical Co Scale removal
GB1025365A (en) * 1962-01-15 1966-04-06 Commw Scient Ind Res Org Improvements in or relating to the distillation of sea water and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011135366A2 (en) 2010-04-30 2011-11-03 Biochemica Uk Ltd Cleaning cooling towers

Also Published As

Publication number Publication date
US3530000A (en) 1970-09-22
NL6701773A (en) 1967-08-07
DE1621572A1 (en) 1971-05-06

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