DE817124C - Procedure for removing scale - Google Patents

Procedure for removing scale

Info

Publication number
DE817124C
DE817124C DEP13310D DEP0013310D DE817124C DE 817124 C DE817124 C DE 817124C DE P13310 D DEP13310 D DE P13310D DE P0013310 D DEP0013310 D DE P0013310D DE 817124 C DE817124 C DE 817124C
Authority
DE
Germany
Prior art keywords
procedure
agents
scale
removing scale
water
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
DEP13310D
Other languages
German (de)
Inventor
Bruno Dr Blaser
Bernhard Dr Raecke
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Priority to DEP13310D priority Critical patent/DE817124C/en
Application granted granted Critical
Publication of DE817124C publication Critical patent/DE817124C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents

Description

Verfahren zur Entfernung von Wasserstein In vielen Apparaturen, in denen Wasser zirkuliert, setzt sich mit der Zeit der Wasserstein ab. Dies ist insbesondere in solchen Apparaturen der Fall, in denen das Wasser erwärmt wird. Von Zeit zu Zeit muß dieser Wasserstein entfernt werden, da er einmal den Durchgang der Wärme in starkem Maße herabmindert und andererseits leicht zu Verengungen des Querschnitts von Rohren u. dgl..führt. Die chemische Entfernung dieses Wassersteins ist bekannt; sie wird in der Hauptsache mit Salzsäure durchgeführt, wobei man zum Schutz der behandelten Metalle geeignete Korrosionsschutzmittel zusetzt. Jedoch bringt die Verwendung der Salzsäure Nachteile, wie schlechte Versand- und Lagermöglichkeiten, gefährliche Handhabung usw., mit sich.Process for removing scale in many apparatuses, in circulating water, the water stone settles over time. This is particular the case in apparatuses in which the water is heated. From time to time this water stone must be removed, since it has once allowed the heat to pass through greatly reduces and on the other hand easily to narrowing of the cross-section of pipes and the like. The chemical removal of this scale is known; it is carried out mainly with hydrochloric acid, with the protection of the Adds suitable anti-corrosion agents to treated metals. However, it brings Use of hydrochloric acid disadvantages, such as poor shipping and storage options, dangerous handling etc., with it.

Es wurde nun gefunden, daß man den Wasserstein dadurch entfernen kann, daß man ihn mit sauer reagierenden Auflösungen von festen Salzen schwacher organischer Basen und starker Säuren behandelt. Schwache Basen sind beispielsweise Harnstoff, Thioharnstoff, Glykokoll, Taurin usw., die mit Säuren wie Salpetersäure, Phosphorsäure usw. feste Salze bilden, die sich in Wasser mit stark saurer Reaktion auflösen. Die Behandlung der mit den Ansätzen behafteten Flächen kann durch Spritzen, Abwaschen u. dgl. geschehen. In engen Gefäßen läßt man vorteilhaft eine Lösung der Wasserstein entfernenden Mittel stehen oder zirkulieren.It has now been found that the water stone can be removed by that it can be mixed with acidic solutions of solid salts of weaker organic compounds Treats bases and strong acids. Weak bases are for example urea, Thiourea, Glycocolla, Taurine etc., those with acids like nitric acid, phosphoric acid etc. form solid salts which dissolve in water with a strongly acidic reaction. The surfaces affected by the approaches can be treated by spraying or washing off and the like happen. A solution of the scale is advantageously left in narrow vessels removing agents stand or circulate.

Die Mittel nach der vorliegenden Erfindung können zur Verbesserung ihrer Wirkung säurebeständige Netzmittel, wie Sulfonsäuren alkylierter aromatischer Verbindungen, ferner korrosionsverhütende Mittel enthalten.The agents according to the present invention can be used for improvement their action acid-resistant wetting agents, such as sulfonic acids alkylated aromatic Compounds, also contain anti-corrosive agents.

Beispiel Ein durch längeren Gebrauch mit starkem Ansatz von Wasserstein überzogener Autokühler wird mit einer 5°% Hamstoffnitrat enthaltenden Lösung, der geeignete Korrosionsschutzmittel zugefügt sind, gefüllt. Nach einiger Zeit haben sich die Ansätze vollkommen gelöst.Example One from prolonged use with a heavy build-up of water stone Coated car radiator is coated with a solution containing 5% urea nitrate, the suitable anti-corrosive agents are added, filled. After a while the approaches completely resolved.

Ein besonderer Vorteil der Säureanlagerungsprodukte *an organisöhe schwache Basen liegt vor allem in der Anwendungsmöglichkeit fester Salze für den Versand und für die Aufbewahrung.A particular advantage of the acid addition products *at Organizational weak bases are mainly due to the application of solid salts for shipping and for storage.

Claims (2)

PATENTANSPRÜCHE: z. Verfahren zum Entfernen von Wasser- bzw. Kesselstein iri' Pechnischen Apparaturen, dadurch gekennzeichnet, daß man die Ansätze mit wäBrigen Lösungen von sauer reagierenden Salzen aus schwachen organischen Basen und starken Säuren, wie Salpetersäure und Phosphorsäure, behandelt. PATENT CLAIMS: e.g. Procedure for removing water or scale iri 'technical apparatus, characterized in that the approaches with aqueous Solutions of acidic salts from weak organic bases and strong ones Acids such as nitric acid and phosphoric acid. 2. Verfahren nach Anspruch z, gekennzeichnet durch die Mitverwendung von Netzmitteln, Korrosionsverhütungsmitteln u. dgl.2. The method according to claim z, characterized by the use of wetting agents and anti-corrosion agents and the like
DEP13310D 1948-10-02 1948-10-02 Procedure for removing scale Expired DE817124C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP13310D DE817124C (en) 1948-10-02 1948-10-02 Procedure for removing scale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP13310D DE817124C (en) 1948-10-02 1948-10-02 Procedure for removing scale

Publications (1)

Publication Number Publication Date
DE817124C true DE817124C (en) 1951-10-15

Family

ID=7364550

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP13310D Expired DE817124C (en) 1948-10-02 1948-10-02 Procedure for removing scale

Country Status (1)

Country Link
DE (1) DE817124C (en)

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