EP0054083A1 - Process for protecting the pipes of a heating system - Google Patents

Process for protecting the pipes of a heating system Download PDF

Info

Publication number
EP0054083A1
EP0054083A1 EP80200927A EP80200927A EP0054083A1 EP 0054083 A1 EP0054083 A1 EP 0054083A1 EP 80200927 A EP80200927 A EP 80200927A EP 80200927 A EP80200927 A EP 80200927A EP 0054083 A1 EP0054083 A1 EP 0054083A1
Authority
EP
European Patent Office
Prior art keywords
water
added
weight
percent
weight percent
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.)
Withdrawn
Application number
EP80200927A
Other languages
German (de)
French (fr)
Inventor
C.H. De Gram
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.)
GRAM C H DE
Original Assignee
GRAM C H DE
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 GRAM C H DE filed Critical GRAM C H DE
Publication of EP0054083A1 publication Critical patent/EP0054083A1/en
Withdrawn legal-status Critical Current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
    • 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
    • C23F11/18—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 inorganic inhibitors
    • C23F11/187—Mixtures of inorganic inhibitors
    • C23F11/188—Mixtures of inorganic inhibitors containing phosphates

Abstract

In a process for protecting the interior of pipework in central heating systems, a compsn. is added to the water in the system comprising an aq. mixt. contg. 50-90 wt.% water glass and one or more stabilisers, esp. 5-30 wt.% of a phosphate such as Na3PO4.12H2O and opt. 5-30 wt.% ethylene glycol. Generally approx. 1 l of the aq. mixt. is added per 300 l water in the sytem. The additive prevents corrosion and internal deposit formation in central heating systems, thus improving the life of the system and improving heat transfer and efficiency of the system.

Description

Die Erfindung bezieht sich auf die Wirkungsweise zum Schutz der Rohrleitung eines Heizungssystems gegen Zerstörung,durch Züfugen von Stoffen in das Wasserleitungssystem,wodurch sich ein Schutz auf der Innenseite des Systems bildet.The invention relates to the operation of the protection of the pipeline of an H eizungssystems against destruction, by Züfugen of substances in the water supply system, whereby a protection is on the inside of the system.

Weiter bezieht sich die Erfindung auf die Herstellungsweise einer Wässerigen Mischung,die mit Leitungswasser in das Heizungssystem eingespeist wird.The invention further relates to the production method of an aqueous mixture which is fed into the heating system with tap water.

Im Zentralheizungssystem Können verschiedene Mängel auftreten.Various defects can occur in the central heating system.

Die Rohrleitungen werden angefressen oder es bilden sich unerwünschte Beläge,am Leitungssystem zeigen sich Undichtigkeiten.

  • 1. Innere Verunreinigungen des Systems durch Korrosion. Durch diesen Prozes verkürst sich die Lebensdauer des Lei- tungssystems.
  • 2. Durch die Bildung von unerwünschten Belägen an der Innenseite des Systems und möglichen Heizungsübertragungs elementen, wird die Wärme-Übertragung vermindert. Der Verlast beträgt etwa 10% bei einer Schutzablagerung von einem millimeter,
  • 3. Die verminderte Wärme-Übertragung verursacht einen erhöhten Verbrauch von Energie.
    • Dies bedeutet das das kesselwasser auf eine höhere Temperatur gebracht werden muss.
    • Z.b.Wenn die Kesseltemperatur 70°C.ohne Belag ist,soll bei einem Belag von 1-2 mm die Kesseltemperatur auf ± 90°C.gebracht werden,um dasselbe Heizungsresutat zu bekommen.
  • 4. Eine höhere Wassertemperatur im System hat eine weniger angenehme Verteilung der Wärme in den zu heizenden Räumen zur Foge.
  • 5. Die Schmutzablagerungen erschweren die Strömung des Wassers im System und den Heizungselementen,da die engste Durchlass- öffnung die Strömungs-geschwindigkeit im System bestimmt.
The pipes are eaten up or unwanted deposits are formed, leaks show up in the pipe system.
  • 1. Internal contamination of the system due to corrosion. Through this Prozes the life of the L egg processing system verkürst.
  • 2. The formation of unwanted deposits on the inside of the system and possible heating transmission elements, the heat transfer is reduced. The load is about 10% with a protective deposit of one millimeter,
  • 3. The reduced heat transfer causes an increased consumption of energy.
    • This means that the boiler water must be brought to a higher temperature.
    • For example, if the boiler temperature is 70 ° C without coating, the boiler temperature should be brought to ± 90 ° C with a coating of 1-2 mm to get the same heating result.
  • 4. A higher water temperature in the system has a less pleasant distribution of heat in the rooms to be heated to the fog.
  • 5. The dirt difficult eizungselementen the flow of water in the system and the H, as the narrowest passband opening the flow rate determined in the system.

Durch Versuche ist ein Mittel entwickelt worden das die genannten Schäden verhindert.A means has been developed through trials to prevent the damage mentioned.

Die Wirkung der Erfindung wird dadurch erzielt,indem eine wässerige Mischung zugeführt wird,die 50-90% Gewichtsprozent Natrium silicat enthält sowie mehrere stabiliserende Stoffen.The effect of the invention is achieved by feeding an aqueous mixture containing 50-90% by weight sodium silicate and several stabilizing substances.

Durch ZufUhren dieser Mischung wird im Leitungssystem und in den heizungselementen und Kessel eine sehr dünne Schutzschicht gebildet, die den Reibungswiderstand im System verringert und die Schmutz-und Kalkablagerungen verhindert.By feeding this mixture, a very thin protective layer is formed in the pipe system and in the heating elements and boiler, which reduces the frictional resistance in the system and prevents dirt and limescale deposits.

Ein zusätzlicher Vorteil dieser neuen Mittels ist,dass kleine Rissen und Leckschäden im System abgedichtet werden durch einen dünnen ,jedoch stark schützenden Belag,der hauptsächlich durch das zugefügte Natrium silicat gebildet wird.An additional advantage of this new agent is that small cracks and leak damage in the system are sealed by a thin, but very protective coating, which is mainly formed by the added sodium silicate.

Durch das Abdichten solcher Leckstellen werden Wasserverluste vermieden und das System braucht längere Zeit nicht nachgefüllt zu werden.Sealing such leaks prevents water loss and the system does not need to be refilled for a long time.

PH-erhöhende Stoffe werden der Mischung beigegeben.PH-increasing substances are added to the mixture.

Dazu wird ein phosfaat angewendet,wie z.b. Na3Po4 12H20.For this purpose a phosfaat is used, such as Na 3 Po 4 12H 2 0.

Die Mischung nach der Erfindung und die hiermit erzielte Wirkung - wird noch erweitert durch Zugabe von Ethyleenglycol in einer Menge von 5-20 Gewichtsprozenten,womit das Einfrieren des Systems vermindert wird.The mixture according to the invention and the effect achieved thereby - is further expanded by adding ethylene glycol in an amount of 5-20 percent by weight, which reduces the freezing of the system.

Die Mischung der Erfindung wird hergestellt aus 50-90% Na2 OSiO2, 5-30% Na3 Po4 12H2O in 10-45% H2O.The mixture of the invention is made from 50-90% Na 2 OSiO 2 , 5-30% Na 3 Po 4 12H 2 O in 10-45% H 2 O.

Das verwendete Natron-Wasserglas ist 27,5% Si02 und 30% Trockensubstanz.The soda water glass used is 27.5% Si0 2 and 30% dry matter.

Das produkt ist im Handel in Form einer wässerigen Lösung erhältlich. The product is commercially available in the form of an aqueous solution.

Das angewendete Trinatriumphosphat enthält 42,5% Na3 PO4 und etwa 50% H2 0.The trisodium phosphate used contains 42.5% Na 3 PO 4 and about 50% H 2 0 .

Hierzu.kann 5-10 Gewichtsprozent Ethyleenglycol zugefügt werden. Die Erfindung soll an folgendem Beispiel erklärt werden;For this, 5-10% by weight of ethylene glycol can be added. The invention will be explained using the following example;

In einem Behälter mit Rührwerk 700 teilen Natron-wasserglas,200 teilen Natriumphosphaat und 100 teilen wasser gemischt.In a container equipped with a stirrer 700 parts of soda-water glass, 200 parts of N atriumphosphaat and 100 parts of water are mixed.

Wenn eine homogene Lösung erreicht ist,wird die Mischung mit maximum 250 liter Wasser weiter verdünnt.When a homogeneous solution is reached, the mixture is further diluted with a maximum of 250 liters of water.

Diese Lösung wird in eine Heizungsanlage als Wärme-übertragungsmedium eingefüllt.This solution is filled into a heating system as a heat transfer medium.

Es bildet sich ein dünner Schutzfilm an den Wänden des leitdngssystems, Heizungselementen und Kessel.A thin protective film forms on the walls of the duct systems, H eizungselementen and boiler.

Diese Schutzschicht verhindert wirksam die Schmutzablagerungen an den Wänden des Systems und dadurch findet eine nahezu ideale Wärme-übertragung statt.This protective layer effectively prevents the build-up of dirt on the walls of the system and thus an almost ideal heat transfer takes place.

Claims (7)

1. Arbeitsweise zum beschützen vom Leitungssystem vom Heizungssystem gegen Anfressung, durch as das Wasser im Leitungssystem Stoffe zu zu fügen womit eine beschützende Lage geformt worden kann gegen die Innerseite,.dazu, dass eine wässerige Menge zugefügt werdet, dass 50-90 gewichtsprocenten Wasserglass enthalt und eine oder mehrere stabilisierende Stoffen.1.Working method to protect the pipe system from seizure, by adding water to the pipe system to form a protective layer against the inside, adding an aqueous amount that contains 50-90 weight percent waterglass and one or more stabilizing agents. 2. Arbeitsweise nach 1. dazu, dass wie stabilisierende Stoffe ein Fosfat zugefügt wird in eine Menge von 5-30 gewichtsproenten von das zu zu fügen Mengsel.2. Method of operation according to 1. that, like stabilizing substances, a fosfate is added in an amount of 5-30 percent by weight of the quantity to be added. 3. Arbeitsweise nach 2. dazu, dass 5-30 gewichtprocenten Na3PO4 12H20 an das Mengsel zugefügt wird.3. Work according to 2. to add 5-30 percent by weight Na 3 PO 4 12H 2 0 to the amount. 4. Arbeitsweise nach 1-3, dazu, dass ein zu zu fügen Mengsel wird gemacht, dass 5-30 gewichtsprocenten Ethyleenglycol enthalt.4. Work according to 1-3, adding a quantity to be added that contains 5-30 weight percent ethylene glycol. 5. Arbeitsweise zum bereiten von eine wässerige Menge, dass angewendet worden kann wie ein Beifügsel an Leitungwasser in einem Heizungssystem, dazu, dass das Mittel besteht aus 50-90 gewichtsprocenten Wasserglass und 5-30 gewichtsprocenten Na3PO4 12H20 und weiter Wasser.5. Procedure for preparing an aqueous amount that can be used as an addition to tap water in a heating system, so that the agent consists of 50-90 weight percent water glass and 5-30 weight percent Na 3 PO 4 12H 2 0 and further water . 6. Arbeitsweise nach 5, dazu, dass an das Mengsel 5-10 gewichtsprocenten Ethyleenglycol zugefügt wird.6. Method of operation according to 5, to add 5-10% by weight ethylene glycol to the quantity. 7. Arbeitsweise nach 1-4, dazu, dass etwa 1 Liter wässerig Mengsel zugefügt wird an etwa 300 Liter Wasser womit die Heizungsinstallation abgefüllt wird.7. Working according to 1-4, to add about 1 liter of water to about 300 liters of water, which is used to fill the heating installation.
EP80200927A 1980-02-14 1980-10-02 Process for protecting the pipes of a heating system Withdrawn EP0054083A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8000920 1980-02-14
NL8000920A NL8000920A (en) 1980-02-14 1980-02-14 METHOD FOR PROTECTING THE PIPING SYSTEM OF A HEATING SYSTEM, AND METHOD FOR PREPARING A WATERY MIXTURE FOR IT

Publications (1)

Publication Number Publication Date
EP0054083A1 true EP0054083A1 (en) 1982-06-23

Family

ID=19834830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200927A Withdrawn EP0054083A1 (en) 1980-02-14 1980-10-02 Process for protecting the pipes of a heating system

Country Status (2)

Country Link
EP (1) EP0054083A1 (en)
NL (1) NL8000920A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510989A1 (en) * 1991-04-24 1992-10-28 Calgon Corporation Synergistic combination of sodium silicate and orthophosphate for controlling carbon steel corrosion, inhibiting precipitation of dissolved manganese and iron and reducing soluble lead in potable water
WO1995001465A1 (en) * 1993-07-01 1995-01-12 Henkel Kommanditgesellschaft Auf Aktien Sodium water-glass solutions with high orthophosphate contents for corrosion protection in the field of drinking-water supplies
DE19518514A1 (en) * 1995-05-19 1996-11-21 Setral Chemie Technology Gmbh Corrosion inhibitor for use in aq. media
EP0860517A1 (en) * 1997-02-19 1998-08-26 Metakorin Wasser-Chemie GmbH Method and composition for corrosion inhibiting water carrying metal systems

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1517496A1 (en) * 1963-11-07 1969-11-27 Rww Filter Gmbh Process for the protection of cold and hot water piping systems, especially against oxygen and carbonic acid corrosion

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1517496A1 (en) * 1963-11-07 1969-11-27 Rww Filter Gmbh Process for the protection of cold and hot water piping systems, especially against oxygen and carbonic acid corrosion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510989A1 (en) * 1991-04-24 1992-10-28 Calgon Corporation Synergistic combination of sodium silicate and orthophosphate for controlling carbon steel corrosion, inhibiting precipitation of dissolved manganese and iron and reducing soluble lead in potable water
WO1995001465A1 (en) * 1993-07-01 1995-01-12 Henkel Kommanditgesellschaft Auf Aktien Sodium water-glass solutions with high orthophosphate contents for corrosion protection in the field of drinking-water supplies
DE19518514A1 (en) * 1995-05-19 1996-11-21 Setral Chemie Technology Gmbh Corrosion inhibitor for use in aq. media
EP0860517A1 (en) * 1997-02-19 1998-08-26 Metakorin Wasser-Chemie GmbH Method and composition for corrosion inhibiting water carrying metal systems

Also Published As

Publication number Publication date
NL8000920A (en) 1981-09-16

Similar Documents

Publication Publication Date Title
US3196108A (en) Fire suppressing composition for aerial application
DE2055779A1 (en) Corrosion inhibitor for metal surfaces
DE3130282C2 (en)
US3429824A (en) Composition and method for treating scale
US3432428A (en) Polyphosphate glasses and water treatment uses thereof
EP0054083A1 (en) Process for protecting the pipes of a heating system
US3188289A (en) Inhibiting boiler deposits
DE69721738T2 (en) HEAT TRANSFER FLUID
US2576386A (en) Inhibition of scale formation in steam generation
USRE23740E (en) Corrosion inhibiting compositions
US3019195A (en) Method and composition for treating cooling water
GB898820A (en) Improvements in or relating to the treatment of aqueous liquids, such as cooling water, to inhibit scaling and corrosion thereby
CN105220164A (en) A kind of clean-out system of heat supply heating system
ATE150096T1 (en) SODIUM WATER GLASS SOLUTIONS WITH HIGH ORTHOPHOSPHATE CONTENTS FOR CORROSION PROTECTION IN DRINKING WATER SECTORS
Cohen Sodium hexametaphosphate as a corrosion inhibitor for Ottawa tap water
US3740337A (en) Stop-leak and anti-sludge composition and method of use in steam boilers and hot water heating systems
FI944369A (en) Chemical substances and methods for preventing corrosion and the formation of deposits in aqueous systems
GB724683A (en) Improvements in or relating to a boiler water treating composition
EP0631086A1 (en) Process for sealing leaking water pipes and vessels
US2454258A (en) Water treatment to prevent embrittlement cracking
US2767106A (en) Method of protecting metal with amines and composition therefor
DE19525090A1 (en) Method and concentrate for inhibiting blockages in solar absorber - uses aq. concentrate contg. polyethylene glycol, propylene and/or ethylene glycol and corrosion inhibitors, which does not form insoluble deposit even at high temp.
DE4321629C2 (en) Process for sealing leaks in water-bearing pipes and containers
US3558500A (en) Method for the control of scale using n,n-dimethylamides of 18 carbon unsaturated carboxylic acids
DE1083101B (en) Process for achieving corrosion protection in water-carrying metallic pipes by inoculation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19821223

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840703